14s-1-102-21

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 TECHNICAL MANUAL MAINTENANCE INSTRUCTIONS WITH ILLUSTRATED PARTS BREAKDOWN

USAF FLOTATION EQUIPMENT LRU-1/P, F-2B, AND 25-MAN LIFE RAFTS LPU-3/P, LPU-6/P, LPU-10/P, A-A-50652, AND LIFE PRESERVERS F42620-00-D-0038

BASIC AND ALL CHANGES HAVE BEEN MERGED TO MAKE THIS A COMPLETE PUBLICATION.

DISCLOSURE NOTICE - This information is furnished upon the condition that it will not be released to another nation without the specific authority of the Department of the Air Force and Army of the United States, that it will be used for military purposes only, that individual or corporate rights originating in the information, whether patented or not, will be respected, that the recipient will report promptly to the United States, any known or suspected compromise, and that the information will be provided substantially the same degree of security afforded it by the Department of Defense of the United States. Also, regardless of any other markings on the document, it will not be downgraded or declassified without written approval of the originating United States agency. DISTRIBUTION STATEMENT C - Distribution authorized to U.S. Government Agencies and their contractors (Administrative and Operational Use) (31 January 2005). Other requests for this document shall be referred to 406 SCMS/GULAC, Robins AFB, GA 31098. Questions concerning technical content shall be referred to WR-ALC/GRVED. WARNING - This document contains technical data whose export is restricted by the Arms Export Control Act (Title 22, U.S.C., Sec 2751, et seq.) or the Export Administration Act of 1979, as amended, Title 50, U.S.C., App. 2401, et seq. Violations of these export laws are subject to severe criminal penalties. Disseminate in accordance with provisions of DoD Directive 5230.25. HANDLING AND DESTRUCTION NOTICE - Comply with distribution statement and destroy by any method that will prevent disclosure of contents or reconstruction of the document.

Published Under Authority of the Secretaries of the Air Force and Army

9 AUGUST 2011

CHANGE 2 - 19 JUNE 2012

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

LIST OF EFFECTIVE PAGES

INSERT LATEST CHANGED PAGES. DESTROY SUPERSEDED PAGES.

NOTE

The portion of the text affected by the changes is indicated by a vertical line in the outer margins of the page. Changes to illustrations are indicated by shaded or screened areas, or by miniature pointing hands.

Dates of issue for original and changed pages are:

Original. . . . . . . .0 . . . . . . 9 August 2011 Change . . . . . . . . 1. . . . . .25 March 2012

Change . . . . . . . . 2 . . . . . . . 19 June 2012

TOTAL NUMBER OF PAGES IN THIS PUBLICATION IS 326, CONSISTING OF THE FOLLOWING: Page No.

*Change No.

Title . . . . . . . . . . . . . . . . . . . . . . 2 A. . . . . . . . . . . . . . . . . . . . . . . .2 i. . . . . . . . . . . . . . . . . . . . . . . . .1 ii . . . . . . . . . . . . . . . . . . . . . . . . 2 iii - viii . . . . . . . . . . . . . . . . . . . 0 ix - xi . . . . . . . . . . . . . . . . . . . . 2 xii Blank . . . . . . . . . . . . . . . . . . . 0 xiii . . . . . . . . . . . . . . . . . . . . . . . 2 xiv - xviii . . . . . . . . . . . . . . . . . . 0 1-1 . . . . . . . . . . . . . . . . . . . . . . . 0 1-2 . . . . . . . . . . . . . . . . . . . . . . . 1 1-3 - 1-5. . . . . . . . . . . . . . . . . . .0 1-6 Blank . . . . . . . . . . . . . . . . . . 0 2-1 - 2-5. . . . . . . . . . . . . . . . . . .0 2-6 Blank . . . . . . . . . . . . . . . . . . 0 3-1 - 3-17. . . . . . . . . . . . . . . . . .0 3-18 Blank. . . . . . . . . . . . . . . . . .0 4-1 - 4-9. . . . . . . . . . . . . . . . . . .0 4-10 - 4-14 . . . . . . . . . . . . . . . . . 2 4-14.1 - 4-14.2 Added. . . . . . . . . .2 4-15 - 4-30 . . . . . . . . . . . . . . . . . 0 5-1 . . . . . . . . . . . . . . . . . . . . . . . 2 5-2 - 5-4. . . . . . . . . . . . . . . . . . .0 5-5 - 5-6. . . . . . . . . . . . . . . . . . .1 5-7 - 5-26. . . . . . . . . . . . . . . . . .0 5-27 . . . . . . . . . . . . . . . . . . . . . . 1 5-28 - 5-29 . . . . . . . . . . . . . . . . . 0 5-30 . . . . . . . . . . . . . . . . . . . . . . 1 5-31 - 5-32.1. . . . . . . . . . . . . . . .2 5-32.2 Blank . . . . . . . . . . . . . . . . 1 5-33 . . . . . . . . . . . . . . . . . . . . . . 0 5-34 - 5-35 . . . . . . . . . . . . . . . . . 1 5-36 - 5-39 . . . . . . . . . . . . . . . . . 0 5-40 - 5-41 . . . . . . . . . . . . . . . . . 1 5-42 . . . . . . . . . . . . . . . . . . . . . . 0 6-1 - 6-29. . . . . . . . . . . . . . . . . .0 6-30 Blank. . . . . . . . . . . . . . . . . .0 7-1 . . . . . . . . . . . . . . . . . . . . . . . 0 7-2 - 7-4. . . . . . . . . . . . . . . . . . .1 7-5 - 7-8. . . . . . . . . . . . . . . . . . .0 7-9 - 7-10. . . . . . . . . . . . . . . . . .1 7-11 - 7-28 . . . . . . . . . . . . . . . . . 0 7-29 - 7-30 . . . . . . . . . . . . . . . . . 1 7-31 - 7-37 . . . . . . . . . . . . . . . . . 0 7-38 . . . . . . . . . . . . . . . . . . . . . . 1

Page No.

*Change No.

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7-39 - 7-61 . . . . . . . . . . . . . . . . . 0 7-62 Blank. . . . . . . . . . . . . . . . . .0 8-1 - 8-7. . . . . . . . . . . . . . . . . . .0 8-8 . . . . . . . . . . . . . . . . . . . . . . . 1 8-8.1 Added . . . . . . . . . . . . . . . . . 1 8-8.2 Blank . . . . . . . . . . . . . . . . . 1 8-9 - 8-34. . . . . . . . . . . . . . . . . .0 9-1 - 9-8. . . . . . . . . . . . . . . . . . .0 9-9 Blank . . . . . . . . . . . . . . . . . . 0 9-10 - 9-20 . . . . . . . . . . . . . . . . . 0 9-21 - 9-22 . . . . . . . . . . . . . . . . . 1 9-23 - 9-26 . . . . . . . . . . . . . . . . . 0 9-27 Blank. . . . . . . . . . . . . . . . . .0 9-28 - 9-32 . . . . . . . . . . . . . . . . . 0 9-33 Blank. . . . . . . . . . . . . . . . . .0 9-34 - 9-40 . . . . . . . . . . . . . . . . . 0 9-41 - 9-42 . . . . . . . . . . . . . . . . . 1 9-43 . . . . . . . . . . . . . . . . . . . . . . 0 9-44 Blank. . . . . . . . . . . . . . . . . .0 Glossary 1 - Glossary 23. . . . . . . .0 Glossary 24 . . . . . . . . . . . . . . . . . 2 FP-1 . . . . . . . . . . . . . . . . . . . . . . 0 FP-2 Blank . . . . . . . . . . . . . . . . . 0 FP-3 . . . . . . . . . . . . . . . . . . . . . . 0 FP-4 Blank . . . . . . . . . . . . . . . . . 0

* Zero in this column indicates an original page.

A

Change 2

USAF

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

TABLE OF CONTENTS Chapter

Page

LIST OF ILLUSTRATIONS . . . . . . . . . . . . .

ix

2.7

LIST OF TABLES . . . . . . . . . . . . . . . . . . . .

xi

2.7.1 2.7.2 2.8

FOREWORD

.......................

SAFETY SUMMARY 1

.................

INTRODUCTION . . . . . . . . . . . . . . . . . . . 1.1 1.1.1 1.1.2 1.1.3 1.2 1.3 1.3.1 1.3.2 1.3.3 1.3.4 1.4 1.4.1 1.4.2 1.5

2

Chapter

INTRODUCTION . . . . . . . . . . . . Periodic Inspection and Maintenance . . . . . . . . . . . . . . Foreword . . . . . . . . . . . . . . . . . . Safety. . . . . . . . . . . . . . . . . . . . . TRAINING EQUIPMENT MARKINGS . . . . . . . . . . . . . . RESPONSIBILITIES . . . . . . . . . . Electrical Environmental System Specialist (2A6X6) . . . . . . . . . . Aircrew Flight Equipment Specialist (1P0X1) . . . . . . . . . . . . . . . . . USAF Pararescue and Combat Control Forces. . . . . . . . . . . . . . . . MAJCOMS . . . . . . . . . . . . . . . . . SERVICE LIFE . . . . . . . . . . . . . . Service/Shelf Life. . . . . . . . . . . . . Condemning Equipment . . . . . . . . FLOTATION EQUIPMENT RECORDS . . . . . . . . . . . . . . .

OPERATION AND USE . . . . . . . . . . . . . . . 2.1 2.2 2.2.1 2.2.2 2.3 2.3.1 2.3.2 2.4 2.4.1 2.4.2 2.5 2.5.1 2.5.2 2.5.3 2.6

GENERAL INFORMATION . . . . . LRU-1/P LIFE RAFT ASSEMBLY . . . . . . . . . . . . . . Operation . . . . . . . . . . . . . . . . . . Use . . . . . . . . . . . . . . . . . . . . . . F-2B LIFE RAFT ASSEMBLY . . . Operation . . . . . . . . . . . . . . . . . . Use . . . . . . . . . . . . . . . . . . . . . . MA-1 AND MA-2 SEA RESCUE KITS . . . . . . . . . . . . . . . . . . . Function . . . . . . . . . . . . . . . . . . . Operation . . . . . . . . . . . . . . . . . . TWENTY-FIVE-MAN LIFE RAFT ASSEMBLY . . . . . . . . . . . . . . Operation . . . . . . . . . . . . . . . . . . Use . . . . . . . . . . . . . . . . . . . . . . Seating . . . . . . . . . . . . . . . . . . . . EMERGENCY REPAIR . . . . . . . .

xiii

2.8.1 2.8.2 2.9

xvii 1-1 1-1

2.9.1 2.9.2 2.9.2.1 2.9.2.2

1-2 1-2 1-2

2.9.2.3

1-2 1-2 1-2 1-2

3

SECTION I 3.1 3.1.1 3.1.2 3.2

1-3

3.2.1

2-1

3.2.2 3.2.3

2-1 2-1 2-1 2-1 2-1 2-2 2-2 2-2 2-2 2-3 2-3 2-3 2-3 2-3

LPU-6/P INFANT’S FLOATING SURVIVAL COT . . . . . . . . . . . Function . . . . . . . . . . . . . . . . . . . Operation and Use . . . . . . . . . . . . A-A-50652 (COMMERCIAL) LIFE PRESERVER ASSEMBLY . . . . Function . . . . . . . . . . . . . . . . . . . Donning . . . . . . . . . . . . . . . . . . . LPU-3/P AND LPU-10/P LIFE PRESERVER ASSEMBLIES. . . . . . . . . . . . . Function . . . . . . . . . . . . . . . . . . . Donning . . . . . . . . . . . . . . . . . . . LPU-10/P . . . . . . . . . . . . . . . . . . LPU-3/P Installation on Seat Style Parachute Harness . . . . . . . . . . LPU-3/P Installation on Back Style and Integrated Torso Parachute Harnesses . . . . . . . . . . . . . . . .

FLOTATION SECTION . . . . . . . . . . . . . . .

1-2 1-2 1-3 1-3 1-3

2-1

Page

3.2.4 3.2.5 3.2.6 3.3 3.3.1 3.3.2 3.3.3 3.3.4

2-4 2-4 2-4 2-4 2-4 2-4 2-4 2-4 2-5 2-5 2-5 2-5 3-1

FACILITIES . . . . . . . . . . . . . .

3-1

GENERAL . . . . . . . . . . . . . . . . . Requirements. . . . . . . . . . . . . . . . Level of Maintenance . . . . . . . . . . FLOTATION SECTION LAYOUT . . . . . . . . . . . . . . . . Life Raft Inspection and Packing Area. . . . . . . . . . . . . . . . . . . . Life Raft Storage Area . . . . . . . . . Life Preserver Inspection and Packing Area . . . . . . . . . . . . . . . . . Life Preserver Storage Area . . . . . . Washroom. . . . . . . . . . . . . . . . . . Rescue Kits Stored or Stocked as War Readiness Material (WRM) Assets . . . . . . . . . . . . . . . . . . ENVIRONMENTAL CONDITIONS. . . . . . . . . . . . . General. . . . . . . . . . . . . . . . . . . . Requirements. . . . . . . . . . . . . . . . Control . . . . . . . . . . . . . . . . . . . . Lighting . . . . . . . . . . . . . . . . . . .

3-1 3-1 3-1 3-1 3-1 3-1 3-1 3-1 3-1 3-1 3-1 3-1 3-2 3-2 3-2

SECTION II HIGH PRESSURE CYLINDER STORAGE . . . . . . . . . . . . . . . . . . . . . . .

3-3

3.4 3.5

3-3 3-3

GENERAL . . . . . . . . . . . . . . . . . HANDLING . . . . . . . . . . . . . . . .

Change 1

i

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TABLE OF CONTENTS - CONTINUED Chapter

Page

3.6

STORAGE . . . . . . . . . . . . . . . . .

SECTION III

SPECIAL TOOLS . . . . . . . . .

3-3

Chapter 4.3.4

3-3 4.3.5

3.7 3.7.1 3.7.2 3.7.3 3.7.4 3.7.5 3.7.5.1 3.8

. . . . . . .

. . . . . . .

. . . . . . .

. . . . . . .

3-3 3-3 3-3 3-3 3-3 3-8 3-8

. . . . .

. . . . .

. . . . .

. . . . .

3-10 3-10 3-10 3-10 3-10

.... ....

3-10 3-14

. . . .

. . . .

3-14 3-14 3-15 3-16

CONFIGURATIONS. . . . . . . . . . . . . . . . . .

4-1

3.8.1 3.8.2 3.8.2.1 3.8.2.2 3.8.2.3 3.8.3 3.8.3.1 3.8.3.2 3.8.3.3 3.8.3.4

REQUIREMENTS . . . . . . . . General. . . . . . . . . . . . . . . . Calibration . . . . . . . . . . . . . Sewing Machines . . . . . . . . . Shop Support Equipment . . . . Recharging Equipment . . . . . Adapter Assembly . . . . . . . . LOCALLY FABRICATED TOOLS . . . . . . . . . . . . . General. . . . . . . . . . . . . . . . Life Preservers. . . . . . . . . . . Life Preserver Test Fixture. . . A-A-50652 Life Preserver . . . LPU-3/P and 10/P Life Preserver. . . . . . . . . . . . . Multiplace Life Rafts . . . . . . Multiplace Life Raft Test Fixture . . . . . . . . . . . . . . F-2B, 20-Man Life Raft . . . . MA-1/MA-2 Sea Rescue Kits. 25-Man Life Raft . . . . . . . . .

. . . .

. . . .

4.3.6 4.3.6.1 4.3.7 4.3.8

4.4 4.4.1 4.4.2 4.4.3

Page Fabrication and Installation of Inspection Data Pocket on Life Raft Container . . . . . . . . . . . . . . . . Installation of Canopy Access Hole. . . . . . . . . . . . . . . . . . . . Removal of Inlet Valve Check Element . . . . . . . . . . . . . . . . . Removal and Reinstallation of Mirada Style Inlet Valve Check Element/Poppet Retainer . . . . . . . . F-2B Lengthening of Carbon Dioxide Cylinder Sling Retainer Strap . . . . . . . . . . . . . . . . . . . Extending the Carbon Dioxide Cylinder Cover PN 63A80H8-1 to Accommodate the Air-Lock Valve . . . . . . . . . . . . . . . . . . . TWENTY-FIVE-MAN LIFE RAFT ASSEMBLY . . . . . . . . . . . . . . Description . . . . . . . . . . . . . . . . . Fabrication of Morse Code Placard . . . . . . . . . . . . . . . . . . Fabrication of Hand Pump Instruction Placard . . . . . . . . . . . . . . .

SECTION III 4

4.5 SECTION I 4.1 4.1.1

GENERAL . . . . . . . . . . . . . . .

4-1

SCOPE. . . . . . . . . . . . . . . . . . . . Modifications. . . . . . . . . . . . . . . .

4-1 4-1

SECTION II 4.2 4.2.1 4.2.2 4.2.3 4.2.4 4.2.5 4.2.6 4.3 4.3.1 4.3.2 4.3.3

ii

LIFE RAFT ASSEMBLIES. . . .

LRU-1/P LIFE RAFT ASSEMBLY . . . . . . . . . . . . . . Description . . . . . . . . . . . . . . . . . Removal of Knife and Leather Holster from Life Raft Tube . . . . . . Installation of Velcro Pile Tape on Bow of Life Raft . . . . . . . . . . . Fabrication and Installation of Inspection Data Pocket on Life Raft Container . . . . . . . . . . . . . . . . Installation of Boarding Line . . . . . Installation of Boarding Ladder . . . F-2B LIFE RAFT ASSEMBLY . . . Description . . . . . . . . . . . . . . . . . Removal of Knife and Leather Holster from F-2B Life Raft Tube . . . . . . . . . . . . . . . . . . . Installation of Velcro Pile Tape on Life Raft Tube . . . . . . . . . . . . .

Change 2

4.5.1 4.5.2 4.5.3

4-1 4.5.4 4-1 4-1

SEA RESCUE KITS . . . . . . . .

MA-1 AND MA-2 SEA RESCUE KITS . . . . . . . . . . . . . . . . . . . Description . . . . . . . . . . . . . . . . . Installation of Sea Anchors on F-2B Life Raft Assembly. . . . . . . . . . Fabrication and Installation of Inspection Data Pocket on Containers. . . . . . . . . . . . . . . . Rework MA-1 and MA-2 Outer Supply Containers . . . . . . . . . .

4-2

SECTION IV LIFE PRESERVER ASSEMBLIES . . . . . . . . . . . . . . . . . . . . .

4-2

4.6

4-3 4-4 4-4 4-6 4-6 4-6 4-6

4.6.1 4.7 4.7.1 4.8 4.8.1 4.8.2

LPU-6/P INFANT’S FLOATING SURVIVAL COT . . . . . . . . . . . Description . . . . . . . . . . . . . . . . . A-A-50652 (COMMERCIAL) LIFE PRESERVER ASSEMBLY . . . . Description . . . . . . . . . . . . . . . . . LPU-3/P, AND LPU-10/P LIFE PRESERVER ASSEMBLIES. . . . . . . . . . . . . Description . . . . . . . . . . . . . . . . . LPU-3/P Installation of Slider Keeper Tab . . . . . . . . . . . . . . .

4-9 4-9 4-9 4-14 4-14

4-14 4-14.1 4-14.1 4-14.1 4-14.1 4-15 4-15 4-15 4-15 4-15 4-16 4-16

4-16 4-16 4-17 4-17 4-18 4-18 4-20

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

TABLE OF CONTENTS - CONTINUED Chapter 4.8.3

4.8.3.1 4.8.3.2 4.8.3.3 4.8.3.4

4.8.3.5 4.8.4 4.8.5 4.8.6 4.8.7 4.8.8 4.8.9 4.8.10

5

Page LPU-3/P Installation of Slide Fasteners to Back Style, Seat Style, and Integrated Torso Parachute Harnesses . . . . . . . . . . . . . . . . Back Style Parachute Harness . . . . Seat Style Parachute Harness . . . . . Integrated Torso Harness . . . . . . . . Reinforcement of LPU-3/P Life Preserver Attachment to the Back Style Integrated Pack and Harness, Torso Harness and the Seat Style Harness . . . . . . . . . . . . . Inspection of LPU-3/P Container/ Fastener Lacing Tape . . . . . . . . (LPU-3/P and 10/P) Stitching Lanyard Sleeve . . . . . . . . . . . . . . . LPU-3/P and 10/P Installation of Snap Fastener on Case Front Flap . . . . . . . . . . . . . . . . . . . . LPU-3/P and 10/P Fabrication of Hook and Pile Tape Cell Connectors . . . . . . . . . . . . . . . LPU-3/P and 10/P Hook Tape Protector . . . . . . . . . . . . . . . . . LPU-3/P and 10/P Fabrication of Protective Flap to Container. . . . LPU-3/P and 10/P Shortening of Carbon Dioxide Cylinder Retaining Lanyard. . . . . . . . . . . . . . . LPU-3/P and 10/P Lengthening of Carbon Dioxide Cylinder Retaining Lanyard. . . . . . . . . . . . . . .

INSPECTION . . . . . . . . . . . . . . . . . . . . . . SECTION I 5.1 5.1.1 5.1.1.1 5.1.1.2 5.1.1.3 5.1.1.4 5.1.1.5 5.1.1.6 5.2 5.3 5.3.1 5.3.2 5.3.3 5.3.4 5.3.5 5.3.5.1

GENERAL . . . . . . . . . . . . . . . SCOPE. . . . . . . . . . . . . . . . . Requirements. . . . . . . . . . . . . Special Inspection . . . . . . . . . Preflight/Screening Inspection . Initial Installation Inspection . . Periodic Inspection . . . . . . . . . Functional Test . . . . . . . . . . . Hydrostatic Test . . . . . . . . . . . CONDEMNED FLOTATION EQUIPMENT . . . . . . . . . . INSPECTION PROCEDURES . General Introduction . . . . . . . . Operation and Use . . . . . . . . . Flotation Section . . . . . . . . . . Configuration. . . . . . . . . . . . . Inspection . . . . . . . . . . . . . . . Markings Inspection . . . . . . . .

Chapter 5.3.5.2 5.3.5.3 5.3.6 5.3.7 5.3.8 5.3.9

4-20 4-20 4-21 4-22

4-22

. . . . . .

5-3 5-3 5-3 5-3 5-3 5-3

SECTION II LRU-1/P (7-MAN), F-2B (20MAN) AND 25-MAN LIFE RAFT ASSEMBLIES . . . . . . . . . . . . . . . . . . . . .

5-5

5.4

4-22 5.4.1 5.4.1.1 5.4.1.2 5.4.1.3 5.4.1.4 5.4.1.5 5.4.2 5.4.2.1 5.4.2.2

4-23 4-26 4-26

Page

4-27 5.4.2.3

Update Records . . . . . . . . . . . Survival Items and Accessories. Maintenance and Repair . . . . . Folding and Packing . . . . . . . . Inflation Assemblies . . . . . . . . Illustrated Parts Breakdown . . .

. . . . . .

. . . . . .

LRU-1/P (7-MAN), F-2B (20-MAN) AND 25-MAN LIFE RAFT ASSEMBLIES. . . . . . . . . . . . . Periodic Inspection . . . . . . . . . . . . Visual Inspection . . . . . . . . . . . . . Functional Test (If Required) . . . . . Leakage Test . . . . . . . . . . . . . . . . Inflation Assembly . . . . . . . . . . . . Records Updating. . . . . . . . . . . . . Preflight/Screening Inspection . . . . Life Raft Assembly. . . . . . . . . . . . MA-1 AND MA-2 SEA RESCUE KITS . . . . . . . . . . . . . . . . . . . 25-Man Case . . . . . . . . . . . . . . . .

5-5 5-5 5-5 5-19 5-22 5-26 5-27 5-27 5-27 5-28 5-28

4-28 SECTION III SURVIVAL ITEMS AND ACCESSORIES . . . . . . . . . . . . . . . . . . . .

4-29

5.5 4-29

5-1

. . . . . . . .

. . . . . . . .

. . . . . . . .

5-1 5-1 5-2 5-2 5-2 5-2 5-2 5-2

. . . . . . . .

. . . . . . . .

. . . . . . . .

5-2 5-2 5-2 5-2 5-2 5-3 5-3 5-3

INSPECTION REQUIREMENTS . . . . . . . . . . Survival Items . . . . . . . . . . . . . . . Accessories . . . . . . . . . . . . . . . . .

5-28 5-29 5-31

SECTION IV LPU-6/P, LPU-3/P, LPU-10/P, AND A-A-50652 LIFE PRESERVER ASSEMBLIES . . . . . . . . . . . . . . . . . . . . .

5-32

5.5.1 5.5.2

5-1

5.6

INSPECTION REQUIREMENTS . . . . . . Periodic Inspection . . . . . . . . Visual Inspection . . . . . . . . . Functional Test . . . . . . . . . . Leakage Test . . . . . . . . . . . . Deflation of Life Preserver. . . Inspect Inflation Assembly as Follows . . . . . . . . . . . . . Installation of Cylinders . . . . Survival Items . . . . . . . . . . . Records Updating. . . . . . . . . Preflight/Screening Inspection

. . . . . .

. . . . . .

. . . . . .

. . . . . .

5-32 5-33 5-33 5-36 5-37 5-38

. . . . .

. . . . .

. . . . .

. . . . .

5-38 5-39 5-40 5-40 5-41

MAINTENANCE AND REPAIR . . . . . . . . .

6-1

5.6.1 5.6.1.1 5.6.1.2 5.6.1.3 5.6.1.4 5.6.1.5 5.6.1.6 5.6.1.7 5.6.1.8 5.6.2 6

5-28

iii

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TABLE OF CONTENTS - CONTINUED Chapter SECTION I 6.1 6.2 6.2.1 6.2.1.1 6.2.1.2 6.2.1.3 6.2.1.4 6.2.1.5 6.2.1.6 6.2.2 6.2.2.1 6.2.2.2 6.2.2.3 6.2.2.4 6.2.2.5 6.2.2.6 6.2.2.7 6.2.2.8 6.2.2.9 6.2.2.10 6.2.2.11 6.2.3 6.2.3.1

U.S. ARMY USE ONLY . . . . . . SCOPE. . . . . . . . . . . . . . . . . . . MAINTENANCE ALLOCATION CHART (FOR ARMY USE ONLY) . . . . . . . . . . . . . . . . . Column Entries Used in the MAC . . . . . . . . . . . . . . . . . . Column 1, Group Number . . . . . . Column 2, Component/Assembly . . . . . . . Column 3, Maintenance Functions . . . . . . . . . . . . . . . Column 4, Maintenance Level . . . Column 5, Tools and Equipment. . . . . . . . . . . . . . . Column 6, Remarks . . . . . . . . . . Maintenance Functions . . . . . . . . Inspect . . . . . . . . . . . . . . . . . . . Test . . . . . . . . . . . . . . . . . . . . . Service . . . . . . . . . . . . . . . . . . . Adjust . . . . . . . . . . . . . . . . . . . Align . . . . . . . . . . . . . . . . . . . . Calibrate . . . . . . . . . . . . . . . . . . Install . . . . . . . . . . . . . . . . . . . . Replace . . . . . . . . . . . . . . . . . . Repair . . . . . . . . . . . . . . . . . . . Overhaul. . . . . . . . . . . . . . . . . . Rebuild. . . . . . . . . . . . . . . . . . . Tools and Test Equipment . . . . . . Column Entries Used in Tool and Test Equipment Table . . . . . . .

.

6-1

.

6-1

. .

6-1 6-1

. . . . . . . . . . . . . . . . . .

6-1 6-1 6-1 6-1 6-3 6-3 6-3 6-3 6-3 6-3 6-3 6-3 6-3 6-3 6-3 6-3 6-3 6-3

6.6.2.1 6.6.2.2

6.8 6.8.1 6.8.1.1 6.8.1.2 6.8.1.3 6.9 6.9.1 6.9.1.1 6.9.1.2 6.10

6-4

6.6.2

6.7 6.7.1 6.7.2 6.7.3

SECTION II LRU-1/P (7-MAN), F-2B (20MAN), AND 25-MAN LIFE RAFT ASSEMBLIES, AND LPU-6/P INFANT’S FLOATING COT, LPU-3/P, LPU-10/P, A-A50652 LIFE PRESERVER ASSEMBLY REPAIRS . . . . . . . . . . . . . . . . . . . . . . . .

6.5 6.6 6.6.1

6.6.3

Page Re-cementing or Replacing Seam Tapes . . . . . . . . . . . . . . . . . . .

SECTION III

6-3

6.4

Chapter

LIFE RAFT AND LIFE PRESERVER MAINTENANCE AND REPAIR . . . . . . . . . . . . . . . . . DETERMINATION OF REPARABILITY . . . . . . . . . . . CLEANING . . . . . . . . . . . . . . . . REPAIRS . . . . . . . . . . . . . . . . . . Cementing Life Rafts and Life Preservers Using MIL-A-5540, Class 3 Form B Adhesive . . . . . . . . . Patching Life Rafts and Life Preservers . . . . . . . . . . . . . . . . Outside Patch . . . . . . . . . . . . . . . Inside Patch. . . . . . . . . . . . . . . . .

6-8

6-1

.

6.3

iv

Page

6.10.1 6.10.1.1

6-4 6-4 6-5 6-5

6.10.1.2

6-5

6.10.1.3

6-6 6-6 6-7

6.11

LIFE RAFT REPAIRS . . . . . .

GENERAL REPAIRS . . . . . . . . . . Repair on the Canopy . . . . . . . . . . Replacement of Sea Anchor Retention Line. . . . . . . . . . . . . . . . . Repair/Replacement of Valve Protective Cover . . . . . . . . . . . . . . . . F-2B LIFE RAFT REPAIRS . . . . . F-2B Repairing Leaks Around Inlet Valve . . . . . . . . . . . . . . . . . . . F-2B Repair of Equalizer Tube. . . . F-2B Replacement of Topping-Off Valve . . . . . . . . . . . . . . . . . . . Replacement of Manifold . . . . . . . LRU-1/P, F-2B CONTAINERS AND CARRYING CASE REPAIRS . . . . . . . . . . . . . . . . Repairing of the LRU-1/P, F-2B Life Raft Containers and Carrying Case Handles. . . . . . . . . . . . . . F-2B and LRU-1/P Life Rafts Repair Cones on Container/Case. . . . . . . . . . . . . F-2B and LRU-1/P Life Rafts Protector Flap on Container/Case. . . . . . . . . . . . . LIFE RAFT ACTUATING AND RETAINING LINE ASSEMBLY, AIRCRAFT RETENTION LINE ASSEMBLY, ACTUATION AND RETENTION LINE ASSEMBLY AND PULL CABLE ASSEMBLY REPAIR AND REPLACE . . . . . . . . . . . . . . . F-2B Repair/Replacement of Life Raft Actuating and Retaining Line Assembly. . . . . . . . . . . . . Repair/Replacement of Life Raft-toAircraft Retention Line Applicable to C-130, Aircraft Remote. . . . . . . . . . . . . . . . . . Repair/Replacement of F-2B T-43 Cargo Floor Assembly Life Raft Actuation and Retention Line Assembly . . . . . . . . . . . . . . . . Repair/Replacement of Pull Cable Assembly . . . . . . . . . . . . . . . . E-3A AIRCRAFT CONTAINER REPAIRS . . . . . . . . . . . . . . . .

6-8 6-8 6-8 6-8 6-8 6-10 6-10 6-11 6-12 6-13 6-14 6-14 6-14 6-16

6-16 6-16

6-17

6-17 6-18 6-18

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TABLE OF CONTENTS - CONTINUED Chapter 6.11.1 6.11.2 6.11.2.1 6.12 6.12.1 6.12.1.1 6.12.1.2 6.12.2 6.12.3 6.12.4 6.12.5

Page E-3A Aircraft Repair of Life Raft Container . . . . . . . . . . . . . . . . Modification of Cylinder Cover (53D3799 or 63A80H8) . . . . . . E-3A Aircraft Repair of F-2B Life Raft Cover Assembly . . . . . . . . 25-MAN REPAIRS . . . . . . . . . . . 25-Man Repair of Life Raft Case Cracks . . . . . . . . . . . . . . . . . . Single Hairline Cracks Less than 1 Inch in Length . . . . . . . . . . . . . Single Hairline Cracks More than 1 Inch in Length . . . . . . . . . . . . . Handle Attaching Holes. . . . . . . . . 25-Man Repair or Replacement of Jet Pump Assembly . . . . . . . . . 25-Man Repair or Replacement of Pressure Relief Valve Assembly PN C18191-4C . . . . . . . . . . . . 25-Man Repair or Replacement of Pressure Relief Valve Assembly, PN 22C23627-1 . . . . . . . . . . . .

SECTION IV

SECTION I

6-21 6-21 6-21

SECTION II

6-21

7.2

6-21 6-22

7.2.1 7.2.2 7.2.3 7.2.4 7.3 7.3.1 7.3.2 7.4

6-22 6-24 6-25

7.4.1 7.4.1.1

LIFE PRESERVER REPAIR . . . . . Repair/replace Cell Protector . . . . . Oral Inflation Valve Repair/replace . . . . . . . . . . . . . Replacing Oral Inflation Valve with Clamp . . . . . . . . . . . . . . . . . . Replacement or Attachment of Tape or Heat Shrink Over the Brass Clamp of the Oral Inflation Valve . . . . . . . . . . . . . . . . . . . Cementing Oral Inflation Valve to Oral Tube without Brass Clamp . . . . . . . . . . . . . . . . . . LPU-6/P LIFE PRESERVER REPAIR . . . . . . . . . . . . . . . . . LPU-6/P Repair of Foam Rubber on Floor . . . . . . . . . . . . . . . . . . . LPU-6/P Repair or Replacement of Securing Strap . . . . . . . . . . . . . LPU-6/P Replacement of Transparent Window. . . . . . . . . . . . . . . LPU-3/P LIFE PRESERVER REPAIR . . . . . . . . . . . . . . . . . LPU-3/P Replacement of Container Lacing Cord . . . . . . . . . . . . . . UPDATING CONFIGURATIONS . . . . . . . .

6-26 6-26

6-28

7.5.1 7.5.2

FOLDING AND PACKING . . . . . . . . . . . . .

7-1

7.5.3

6.13.2.2

6.13.2.3 6.14 6.14.1 6.14.2 6.14.3 6.15 6.15.1 6.16

GENERAL . . . . . . . . . . . . . . .

7.1 7.1.1 7.1.2 7.1.3 7.1.4

6-18

6-26

6.13.2.1

Page 7-1

6-18

LIFE PRESERVER REPAIR . .

6.13 6.13.1 6.13.2

7

Chapter

7.4.1.2

6-26 6-26

7.4.1.3

6-27 7.4.1.4 6-27 6-27 7.4.2 6-27 6-27 7.4.3 6-28 6-28 7.5 6-28

SCOPE. . . . . . . . . . . . . . . . . Life Rafts . . . . . . . . . . . . . . . Life Preservers. . . . . . . . . . . . Sea Rescue Kits . . . . . . . . . . . Accessories and Survival Items

. . . . .

. . . . .

. . . . .

7-1 7-1 7-1 7-1 7-1

LIFE RAFT ASSEMBLIES. . . .

7-1

LRU-1/P LIFE RAFT ASSEMBLY . . . . . . . . . . . . . . General. . . . . . . . . . . . . . . . . . . . Prefolding . . . . . . . . . . . . . . . . . . Folding. . . . . . . . . . . . . . . . . . . . Packing . . . . . . . . . . . . . . . . . . . F-2B LIFE RAFT ASSEMBLY . . . General. . . . . . . . . . . . . . . . . . . . Prefolding . . . . . . . . . . . . . . . . . . F-2B LIFE RAFT ASSEMBLY PRE-PACKING . . . . . . . . . . . . Folding and Packing . . . . . . . . . . . Folding Procedures-Applicable to All F-2B Life Raft Assembly Configurations Except for C-130 and T-43A Aircraft . . . . . . . . . . Packing Procedures-Applicable to Carrying Cases PN 63A80H6 and 50H3501-8, Manual Inflation . . . . . . . . . . . . . . . . . Packing Procedures for F-2B Life Raft Assembly When Packed in LRU-1/P Life Raft Carrying Case PN 62A82H6-Applicable to KC135 Aircraft, Manual Inflation . . . . . . . . . . . . . . . . . Packing Procedures for F-2B Life Raft Assembly Applicable to E-3A Aircraft, Manual Inflation . . . . . . . . . . . . . . . . . Folding and Packing Procedures for F-2B Life Raft Assembly Applicable to C-130 Aircraft, Remote Inflation . . . . . . . . . . . . . . . . . Folding and Packing Procedures for F-2B Life Raft Assembly Applicable to T-43A Aircraft, Manual Inflation . . . . . . . . . . . . . . . . . F-2B LIFE RAFT ASSEMBLY STOWAGE . . . . . . . . . . . . . . . General. . . . . . . . . . . . . . . . . . . . Stowage of Life Rafts in Aircraft Compartments . . . . . . . . . . . . . MA-1 and MA-2 . . . . . . . . . . . . .

7-2 7-2 7-2 7-4 7-5 7-7 7-7 7-8 7-11 7-12

7-12

7-12

7-17

7-19

7-19

7-25 7-28 7-28 7-28 7-28

v

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TABLE OF CONTENTS - CONTINUED Chapter 7.6 7.6.1 7.6.2 7.6.3 7.6.4

Page TWENTY-FIVE-MAN LIFE RAFT ASSEMBLY . . . . . . . . . . . . . . General. . . . . . . . . . . . . . . . . . . . Prefolding . . . . . . . . . . . . . . . . . . Folding. . . . . . . . . . . . . . . . . . . . Packing . . . . . . . . . . . . . . . . . . .

SECTION III 7.7 7.7.1 7.7.2 7.8 7.8.1 7.8.2 7.8.3 7.8.3.1 7.8.3.2 7.8.3.3 7.8.3.4 7.8.4

SEA RESCUE KITS . . . . . . . .

GENERAL . . . . . . . . . . . . . . . . . Use . . . . . . . . . . . . . . . . . . . . . . Description . . . . . . . . . . . . . . . . . FOLDING AND PACKING. . . . . . Prefolding . . . . . . . . . . . . . . . . . . Folding and Packing Life Rafts . . . Packing Supply Containers . . . . . . Assembling Containers Two, Three, and Four . . . . . . . . . . . . . . . . . Preparation of Harness Assembly . . . . . . . . . . . . . . . . Installation of Harness Assembly . . . . . . . . . . . . . . . . Installation of Night Locator Lights (If Applicable) . . . . . . . . . . . . . Record Updating . . . . . . . . . . . . .

SECTION IV LIFE PRESERVER ASSEMBLIES . . . . . . . . . . . . . . . . . . . . . 7.9 7.9.1 7.9.2 7.10 7.10.1 7.10.2 7.10.2.1 7.10.2.2 7.11 7.11.1 7.11.2 8

LPU-6/P INFANT’S FLOATING SURVIVAL COT . . . . . . . . . . . Prefolding . . . . . . . . . . . . . . . . . . Folding and Packing . . . . . . . . . . . A-A-50652 (COMMERCIAL) LIFE PRESERVER ASSEMBLY . . . . Prefolding . . . . . . . . . . . . . . . . . . Folding and Packing . . . . . . . . . . . A-A-50652 Repair/Replacement of Lifeline. . . . . . . . . . . . . . . . . . Attachment of Survival Items. . . . . LPU-3/P AND LPU-10/P LIFE PRESERVER ASSEMBLIES. . . . . . . . . . . . . Prefolding . . . . . . . . . . . . . . . . . . Folding and Packing . . . . . . . . . . .

OVERHAUL OF CARBON DIOXIDE CYLINDER, AIR CYLINDER, AND RESERVOIR AIR CYLINDER. . . . . . . . . . . . . . SECTION I MULTIPLACE CARBON DIOXIDE CYLINDER . . . . . . . . . . . . . . . . .

7-28 7-28 7-28 7-32 7-34

Chapter 8.1.1 8.1.2 8.1.3 8.1.4 8.1.5

vi

OVERHAUL OF MULTIPLACE CYLINDERS . . . . . . . . . . . . .

General. . . . . . . . . . . . . . . . . . . . Disassembly . . . . . . . . . . . . . . . . Cleaning For Conventional and Powder Coating . . . . . . . . . . . . Inspection . . . . . . . . . . . . . . . . . . Permanent Volumetric Expansion . . . . . . . . . . . . . . . . Surface Preparation and Treatment of Cylinder . . . . . . . . . . . . . . . Rewinding. . . . . . . . . . . . . . . . . . Soldering . . . . . . . . . . . . . . . . . . Painting For Conventional . . . . . . . Powder Coating . . . . . . . . . . . . . . Reassembly . . . . . . . . . . . . . . . . . Reassembly When Valve Assembly, PN 9864-05 is Used . . . . . . . . .

7-37

8.1.6

7-37 7-37 7-37 7-37 7-37 7-40 7-45

8.1.7 8.1.8 8.1.9 8.1.9.1 8.1.10 8.1.11

7-45

SECTION II CARBON DIOXIDE INFLATION VALVES . . . . . . . . . . . . . . . . . . . .

8-1 8-1 8-2 8-2 8-2 8-2 8-3 8-4 8-4 8-5 8-5 8-8 8-10

7-51 8.2

OVERHAUL OF INFLATION VALVES. . . . . . . . . . . . . . Multiplace Cylinder Valves . . . Disassembly . . . . . . . . . . . . . Replacement of Worn Parts and Reassembly . . . . . . . . . . . . Valve Assembly, PN 9864-05 . . Disassembly . . . . . . . . . . . . . Cleaning . . . . . . . . . . . . . . . . Assembly and Lubrication . . . .

... ... ...

8-10 8-10 8-10

7-53

8.2.2 8.2.2.1 8.2.2.2 8.2.2.3

. . . . .

. . . . .

8-11 8-11 8-11 8-12 8-12

7-53 7-53 7-53

SECTION III 25-MAN LIFE RAFT CYLINDER . . . . . . . . . . . . . . . . . . . . . .

8-14

7-51 7-52 7-53

7-55 7-55 7-55 7-55 7-55 7-56 7-56 7-58

8.2.1 8.2.1.1 8.2.1.2

8.3

OVERHAUL OF 25-MAN CYLINDER . . . . . . . . . . . General. . . . . . . . . . . . . . . . . Disassembly . . . . . . . . . . . . . Cleaning For Conventional and Powder Coating . . . . . . . . . Inspection . . . . . . . . . . . . . . . Overpressure Test Reservoir. . . Priming . . . . . . . . . . . . . . . . Rewinding. . . . . . . . . . . . . . . Soldering . . . . . . . . . . . . . . . Painting for Conventional . . . . Powder Coating . . . . . . . . . . . Reassembly . . . . . . . . . . . . . .

. . . . .

... ... ...

8-14 8-14 8-14

. . . . . . . . .

. . . . . . . . .

8-14 8-15 8-15 8-15 8-15 8-15 8-15 8-16 8-16

SECTION IV 25-MAN LIFE RAFT DISCHARGE VALVE . . . . . . . . . . . . . . . . . .

8-17

8.3.1 8.3.2 8.3.3 8.3.4 8.3.5 8.3.6 8.3.7 8.3.8 8.3.9 8.3.9.1 8.3.10

. . . . . . . . .

8-1 8-1 8.4

8.1

Page

8-1

OVERHAUL OF UNIVERSAL VALVE ASSEMBLY, PN 18D18167-1 . . . . . . . . . . . . . .

8-17

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TABLE OF CONTENTS - CONTINUED Chapter 8.4.1 8.4.2 8.4.3 8.4.4 8.4.5

8.5 8.5.1 8.5.2 8.5.3

8.5.4 8.5.5

Page General. . . . . . . . . . . . . . . . . . . . Disassembly of Reservoir Assembly (When Valve Assembly, PN 18D18167-1 is Used) . . . . . . . . Disassembly of Universal Valve, PN 18D18167-1 . . . . . . . . . . . . . . Reassembly of Universal Valve, PN 18D18167-1 . . . . . . . . . . . . . . Reassembling, Charging, and Testing Reservoir Assembly, When Valve Assembly, PN 18D18167-1 is Used . . . . . . . . . . . . . . . . . . . REPLACEMENT OF DISCHARGE VALVE ASSEMBLY, PN 62314-1 . . . . . . . . . . . . . . . . . General. . . . . . . . . . . . . . . . . . . . Disassembly of Reservoir Assembly When Valve Assembly, PN 62314-1 is Used. . . . . . . . . . . . Reassembly, Charging, and Testing of Reservoir Assembly When Valve Assembly, PN 62314-1 is Used . . . . . . . . . . . . . . . . . . . Disassembly of Discharge Valve Assembly, PN 62314-1 . . . . . . . Reassembly of Discharge Valve Assembly, PN 62314-1 . . . . . . . . .

SECTION V SERVICING LIFE RAFT CYLINDERS. . . . . . . . . . . . . . . . . . . . . . 8.6 8.7 8.7.1 8.7.2 8.7.3 8.8 8.8.1 8.8.2 8.9 8.9.1 8.9.2

GENERAL . . . . . . . . . . . . . . . . . RECHARGING LIFE RAFT CYLINDERS . . . . . . . . . . . . . Recharging Cylinder and Valve Assembly to recharge cylinder and valve assembly . . . . . . . . . . . . Recharging Cylinder When Valve Assembly, PN 9864-05 is Installed . . . . . . . . . . . . . . . . . Recharging 25-Man Life Raft Inflation Assembly . . . . . . . . . . . . . INFLATION ASSEMBLY LEAKAGE TEST . . . . . . . . . . . . . . . Carbon Dioxide Inflation Assembly . . . . . . . . . . . . . . . . 25-Man Life Raft Inflation Assembly . . . . . . . . . . . . . . . . INFLATION VALVE SAFETY-WIRING . . . . . . . . . . Safety-Wiring Valve Assembly PN A128-RDB-HD . . . . . . . . . . . . Safety-Wiring Valve Assembly Stewart Precision Co . . . . . . . .

Chapter

8-17

8.9.3 8.10

8-17 8.10.1 8.10.2 8.10.3

8-17 8-19 9

SECTION I

8-22 8-22

9.1 9.2 9.3

8-22

9.4 9.5 9.6 9.7

8-24 8-24

9.8 9.9 9.10

8-26

9.10.1

8-26

9.10.2 9.10.2.1 9.10.2.2 9.10.2.3 9.10.2.4

8-26 8-26 8-28 8-30 8-30

9.10.3 9.10.4 9.10.4.1 9.10.5 9.10.6 9.10.7

8-30 8-31

9.11 9.11.1 9.11.2

8-31 8-31

Safety-Wiring Valve Assembly PN 9864-05 . . . . . . . . . . . . . . . . . MARKING AND STENCILING OF CYLINDERS . . . . . . . . . . . . . General. . . . . . . . . . . . . . . . . . . . Multiplace Life Raft Cylinders . . . . 25-Man Life Raft Cylinder (Reservoir) . . . . . . . . . . . . . . .

ILLUSTRATED PARTS BREAKDOWN . . . .

8-21

8-22

Page

9.12 9.12.1

FOREWORD . . . . . . . . . . . . . . INTRODUCTION . . . . . . . . . . . . MODELS COVERED. . . . . . . . . . FINDING PART NUMBERS, ILLUSTRATION, DESCRIPTION . . . . . . . . . . . . SIMILAR ASSEMBLIES . . . . . . . SHEET NUMBER EXPLANATION . . . . . . . . . . . USABLE ON CODES . . . . . . . . . SOURCE, MAINTENANCE, AND RECOVERABILITY (SMR) CODES . . . . . . . . . . . . . . . . . PARTS STANDARDIZATION . . . . MANUFACTURER’S LIST. . . . . . MAINTENANCE PARTS LIST (MPL) . . . . . . . . . . . . . . . . . . Figure and Index Number Column . . . . . . . . . . . . . . . . . Part Number Column . . . . . . . . . . Commercial Hardware . . . . . . . . . Parts Not Illustrated . . . . . . . . . . . Markings . . . . . . . . . . . . . . . . . . Government Furnished Equipment (GFE) and Contractor Furnished Equipment (CFE) Covered by Separate Manuals . . . . . . . . . . . CAGE Column . . . . . . . . . . . . . . Description Column . . . . . . . . . . . Indentation . . . . . . . . . . . . . . . . . Units Per Assembly Column . . . . . Usable on Code Column . . . . . . . . Source, Maintenance, and Recoverability (SMR) Code Column . . . NUMERICAL INDEX (NI) . . . . . . Part Number Column . . . . . . . . . . Figure and Index Number Column . . . . . . . . . . . . . . . . . REFERENCE DESIGNATION. . . . Reference Designator Column . . . .

8-32 8-33 8-33 8-33 8-34 9-1 9-1 9-1 9-1 9-1 9-1 9-1 9-1 9-1 9-1 9-2 9-2 9-2 9-3 9-3 9-3 9-3

9-3 9-3 9-3 9-3 9-3 9-3 9-3 9-3 9-3 9-4 9-4 9-4

8-32

vii

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TABLE OF CONTENTS - CONTINUED Chapter 9.12.2

Page Figure and Index Number Column . . . . . . . . . . . . . . . . .

Chapter SECTION III

Page NUMERICAL INDEX . . . . . .

GLOSSARY . . . . . . . . . . . . . . . . . . . . . SECTION II MAINTENANCE PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . .

viii

9-41

9-4 9-7

Glossary 1

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

LIST OF ILLUSTRATIONS Number 3-1 3-2 3-3 3-4 3-5 3-6 3-7 3-8 3-9 3-10 3-11 3-12 3-13 3-14 4-1 4-2 4-3 4-4 4-5 4-6 4-7 4-8 4-8A 4-9 4-10 4-11 4-12 4-13 4-14 4-15 4-16 4-17

Title

Page

Flotation Section Temperature and Humidity Conditions . . . . . . . . . . . . . . . . . 3-2 Carbon Dioxide Inflation Assembly Recharging Schematic (Typical) . . . . . . . 3-9 Fill Adapter Assembly, PN 9867-02 (used on Valve PN 9864-05). . . . . . . . . . . . 3-9 Locally Fabricated Tools; Rewiring and Pull Cable Gauge . . . . . . . . . . . . . . . 3-11 Life Preserver Test Fixture (Typical) . . . . 3-12 Deflation Adapter . . . . . . . . . . . . . . . . . 3-13 Fabrication of Cell Protector . . . . . . . . . 3-13 LPU-10/P Waist Strap . . . . . . . . . . . . . . 3-13 Multiplace Life Raft Test Fixture (Typical) . . . . . . . . . . . . . . . . . . . . . 3-15 Streamers, F-2B Life Raft (Typical). . . . . 3-16 Pull Test Adapter, F-2B Life Raft, PN 9141 . . . . . . . . . . . . . . . . . . . . . . . 3-16 Packing Frame, C-130 Aircraft . . . . . . . . 3-17 Inner Container Packing Frame MA-1 and MA-2 . . . . . . . . . . . . . . . . . . . . . . . 3-17 Rope Coiling Jig MA-1 and MA-2 . . . . . 3-17 LRU-1/P Life Raft Assembly . . . . . . . . . 4-2 Install Velcro Pile Tape on Bow of Life Raft . . . . . . . . . . . . . . . . . . . . . . . . 4-3 Installation of Inspection Data Pocket (Typical) . . . . . . . . . . . . . . . . . . . . . 4-4 Installation of Boarding Ladder. . . . . . . . 4-5 F-2B Life Raft Assembly . . . . . . . . . . . . 4-7 Installation of Velcro Pile Tape on Life Raft Tube . . . . . . . . . . . . . . . . . . . . 4-8 Installation of Canopy Access Hole . . . . . 4-10 Inlet Valve Check Element . . . . . . . . . . . 4-11 Mirada Style Inlet Valve Check Element . . . . . . . . . . . . . . . . . . . . . 4-11 F-2B CO2 Sling Pocket Retainer Straps . . . . . . . . . . . . . . . . . . . . . . . 4-12 Extending Cylinder Cover, PN 63A80H8-1 . . . . . . . . . . . . . . . . . . . 4-13 Twenty-Five-Man Life Raft Assembly . . . . . . . . . . . . . . . . . . . . 4-14.1 Fabrication of Morse Code Placard . . . . . 4-14.2 Fabrication of Hand Pump Instruction Placard . . . . . . . . . . . . . . . . . . . . . . 4-15 Installation of Sea Anchors . . . . . . . . . . 4-16 LPU-6/P Infant’s Floating Survival Cot (Typical) . . . . . . . . . . . . . . . . . . . . . 4-17 A-A-50652 (Commercial) Life Preserver, Adult/Child (Typical) . . . . . . . . . . . . 4-18 LPU-2/P and 10/P Life Preserver Assemblies . . . . . . . . . . . . . . . . . . . 4-19

Number 4-18 4-19 4-20 4-21 4-22 4-23 4-24 4-25 4-26 4-27 4-28 4-29 4-30 4-31 5-1 5-2 5-3 5-4 5-5 5-6 5-7 5-8 5-9 5-10 6-1 6-2 6-3 6-4 6-5 6-6 6-7 6-8 6-9

Title

Page

LPU-3/P Life Preserver Assembly . . . . . . Installation of Slider Keeper Tab. . . . . . . Attachment of Rear Slide Fasteners to Back Style, Seat Style, and Torso Harnesses . . . . . . . . . . . . . . . . . . . . Front View of Back Style and Integrated Torso Harness . . . . . . . . . . . . . . . . . Attachment to Seat Style Parachute Harness. . . . . . . . . . . . . . . . . . . . . . Reinforcement LPU-3/P Life Preserver . . . . . . . . . . . . . . . . . . . . . Stitching Lanyard Sleeve . . . . . . . . . . . . Installation of Snap Fastener . . . . . . . . . Fabrication of Cell Connectors . . . . . . . . Cell Connector Installation . . . . . . . . . . . Hook Tape Protector . . . . . . . . . . . . . . . Attachment of Protective Flap to Container . . . . . . . . . . . . . . . . . . . . Shortening of Carbon Dioxide Cylinder Retaining Lanyard . . . . . . . . . . . . . . Lengthening a Carbon Dioxide Cylinder Retaining Lanyard . . . . . . . . . . . . . . International Morse Code. . . . . . . . . . . . Placard, Morse Code . . . . . . . . . . . . . . . Placard, Hand Pump Instructions. . . . . . . Tube Segment Identification . . . . . . . . . . Measuring Pull Force on Vent Manifold . . . . . . . . . . . . . . . . . . . . . Stenciling Inspection Data on Life Rafts . . . . . . . . . . . . . . . . . . . . . . . Inflation Valve, Safety-Tie . . . . . . . . . . . Cylinder Thread Count . . . . . . . . . . . . . Stenciling Inspection Data on Life Preservers . . . . . . . . . . . . . . . . . . . . Stenciling Inspection Data (A-A-50652) . . . . . . . . . . . . . . . . . . Fabrication of Patch . . . . . . . . . . . . . . . Sea Anchor Retention Line . . . . . . . . . . Removal of Inlet Valve . . . . . . . . . . . . . Repair of Equalizer Tube . . . . . . . . . . . . Replacement of Topping-off Valve. . . . . . Life Raft Actuating and Retaining Line Assembly . . . . . . . . . . . . . . . . . . . . Life Raft-to-Aircraft Retention Line (Applicable to C-130, Aircraft Remote) . . . . . . . . . . . . . . . . . . . . . F-2B T-43 Cargo Floor Assembly Life Raft Actuation and Retention Line Assembly . . . . . . . . . . . . . . . . . . . . Pull Cable Assembly . . . . . . . . . . . . . . .

4-19 4-20

Change 2

4-20 4-21 4-22 4-24 4-26 4-26 4-27 4-27 4-28 4-28 4-29 4-30 5-12 5-18 5-18 5-19 5-21 5-27 5-39 5-40 5-41 5-42 6-7 6-9 6-11 6-12 6-13 6-17 6-17 6-17 6-18

ix

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LIST OF ILLUSTRATIONS - CONTINUED Number 6-10 6-11

Title

7-27 7-28

Installation of Chafing Strips . . . . . . . . . Jet Pump Assembly Screw Torque Pattern . . . . . . . . . . . . . . . . . . . . . . Pressure Relief Valve Assembly, PN C18191-4C . . . . . . . . . . . . . . . . . . . Pressure Relief Valve Assembly, PN 22C23627-1 . . . . . . . . . . . . . . . . . . . LPU-6/P Transparent Window. . . . . . . . . Routing of LRU-1/P Life Raft Pull Cable . . . . . . . . . . . . . . . . . . . . . . . Pull Cable Assemblies . . . . . . . . . . . . . . Folding Procedure, LRU-1/P Life Raft . . . . . . . . . . . . . . . . . . . . . . . . Placing Life Raft in Carrying Case . . . . . Life Raft Packed in Carrying Case . . . . . Routing of F-2B Life Raft Pull Cable . . . Folding Procedure, Sea Anchor. . . . . . . . F-2B Life Raft Actuating and Retaining Line and Pull Cable Assemblies . . . . . Folding Procedure, F-2B Life Raft Assembly . . . . . . . . . . . . . . . . . . . . Typical Installation of Pull Cable Assembly, PN 63A80H6 . . . . . . . . . . . . . . . Placing Life Raft in Carrying Case . . . . . F-2B Life Raft Packed in Carrying Case, PN 63A80H6 . . . . . . . . . . . . . . . . . . Vent in Open and Closed Position, PN 9153. . . . . . . . . . . . . . . . . . . . . . . . F-2B Life Raft Packed in Carrying Case PN 50H3501-8 . . . . . . . . . . . . . . . . . Typical Installation of Pull Cable Assembly . . . . . . . . . . . . . . . . . . . . Placing Life Raft in Carrying Case . . . . . F-2B Life Raft Packed in Carrying Case PN 62A82H6 . . . . . . . . . . . . . . . . . . Packing Procedure, F-2B Life Raft Assembly, E-3A Aircraft . . . . . . . . . . . . . . . Folding and Packing Procedures, F-2B Life Raft Assembly, C-130 Aircraft . . . . . . . . . . . . . . . . . . . . . . Folding and Packing Procedures, F-2B Life Raft Assembly, T-43A Aircraft . . . . . . . . . . . . . . . . . . . . . . Packaged Life Raft Assembly, T-43A Aircraft . . . . . . . . . . . . . . . . . . . . . . Canopy Folding Procedures . . . . . . . . . . Folding Procedure, 25-Man Life Raft Assembly . . . . . . . . . . . . . . . . . . . . Arming Discharge Valve Assembly . . . . . Packing Procedure, 25-Man Life Raft Assembly . . . . . . . . . . . . . . . . . . . . Lanyard Assembly, 25-Man Life Raft Assembly . . . . . . . . . . . . . . . . . . . . Packaged Life Raft Assembly . . . . . . . . . Attachment of Lanyard, PN 54C6407 . . .

x

Change 2

6-12 6-13 6-14 7-1 7-2 7-3 7-4 7-5 7-6 7-7 7-8 7-9 7-10 7-11 7-12 7-13 7-14 7-15 7-16 7-17 7-18 7-19 7-20 7-21 7-22 7-23 7-24 7-25 7-26

Page

Number

6-20

7-29

6-24 7-30 6-24 6-26 6-29 7-2 7-5 7-6 7-7 7-7 7-7 7-11

7-31 7-32 7-33 7-34 7-35 7-36 7-37 7-38 7-39 8-1 8-2

7-13 7-14 7-15 7-15

8-3 8-4 8-5 8-6 8-7 8-8

7-16 8-9 7-16 8-10 7-17 7-18 7-18 7-19

8-11 8-12 8-13 8-14 8-15 8-16

7-20 8-17 7-22

9-1 9-2 9-3

7-27 7-28 7-31 7-33 7-34

9-4 9-5 9-6 9-7 9-8 9-9

7-35 7-36 7-36 7-40

9-10 9-11 9-12 9-13

Title Folding Procedures, LRU-1/P (7-Man) Life Raft Assembly (MA-1 Sea Rescue Kit Use) . . . . . . . . . . . . . . . . . . . . . Folding Procedures, F-2B (20-Man) Life Raft Assembly (MA-2 Sea Rescue Kit Use) . . . . . . . . . . . . . . . . . . . . . . . . Stowing Static Line . . . . . . . . . . . . . . . Rope Hanks . . . . . . . . . . . . . . . . . . . . . Stowage of Rope Hanks . . . . . . . . . . . . Closing Rope Stowage Pocket Grommets . . . . . . . . . . . . . . . . . . . . Closing Rope Stowage Pocket . . . . . . . . Radio Shipping Container (Typical) . . . . . Stowage of Retaining Line . . . . . . . . . . . Safety-Tying Closure Pin . . . . . . . . . . . . Positioning Closure Pin . . . . . . . . . . . . . Wire Winding Attachment . . . . . . . . . . . Cylinder and Valve Assembly PN 55C3689(KM) . . . . . . . . . . . . . . . . . Cable Gauge . . . . . . . . . . . . . . . . . . . . Valve Assembly, PN 9864-05 . . . . . . . . . Reservoir Assembly . . . . . . . . . . . . . . . Universal Valve Assembly . . . . . . . . . . . Universal Valve . . . . . . . . . . . . . . . . . . Discharge Valve Assembly, PN 62314-1 . . . . . . . . . . . . . . . . . . . . . Inflation Assembly Recharging Schematic . . . . . . . . . . . . . . . . . . . . Routing of Multiplace Life Raft Pull Cable . . . . . . . . . . . . . . . . . . . . . . . Valve Cover Plate . . . . . . . . . . . . . . . . . Installation of Safety Wire . . . . . . . . . . . Safety-Wired Inflation Valve. . . . . . . . . . Installation of Safety Wire . . . . . . . . . . . Safety-Wired Inflation Valve. . . . . . . . . . Installation of Safety Wire on Valve Assembly, PN 9864-05 . . . . . . . . . . . . . Safety-Wire Installed on Valve Assembly, PN 9864-05 . . . . . . . . . . . . . . . . . . . LRU-1/P Life Raft Assembly . . . . . . . . . F-2B Life Raft Assembly . . . . . . . . . . . . Cylinder and Valve Assembly, PN 55C3689 (KM). . . . . . . . . . . . . . . . . Valve Assembly PN 9864-05 . . . . . . . . . Vent Manifold . . . . . . . . . . . . . . . . . . . Vent Assembly . . . . . . . . . . . . . . . . . . . 25-Man Crew Life Raft/Survival Kit . . . . 25-Man Crew, Dual Gas Aspirated Life Raft . . . . . . . . . . . . . . . . . . . . . . . . Crew Life Raft Gas Reservoir Assembly . . . . . . . . . . . . . . . . . . . . Universal Valve Assembly . . . . . . . . . . . Valve Assembly . . . . . . . . . . . . . . . . . . Positive Closing Jet Pump Assembly . . . . Crew Lanyard Assembly . . . . . . . . . . . .

Page

7-41 7-42 7-43 7-43 7-44 7-44 7-45 7-47 7-54 7-61 7-61 8-4 8-7 8-8 8-9 8-18 8-19 8-20 8-23 8-27 8-28 8-32 8-32 8-32 8-32 8-32 8-33 8-33 9-7 9-8 9-10 9-12 9-14 9-15 9-16 9-18 9-20 9-21 9-23 9-25 9-28

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LIST OF ILLUSTRATIONS - CONTINUED Number 9-14 9-15 9-16 9-17

Title

Page

25-Man Crew Life Raft/Survival Kit Case . . . . . . . . . . . . . . . . . . . . . . . . 25-Man Troop Life Raft/Survival Kit Air Case . . . . . . . . . . . . . . . . . . . . . . . . LPU-6/P Infant’s Floating Survival Cot. . . . . . . . . . . . . . . . . . . . . . . . . Carbon Dioxide Inflation Assembly . . . . .

Number 9-18

9-30 9-34

9-19 9-20

9-36 9-37

FO-1 FO-2

Title

Page

LPU-3/P and LPU-10/P Life Preserver Assemblies . . . . . . . . . . . . . . . . . FLU-1/P Inflator Assemblies. . . . . . . . Commercial Life Preserver Assembly, Adult/Child (A-A-50652) . . . . . . . . Felt Pattern, Valve Protector Cover . . . Cloth Pattern, Valve Protector Cover . .

.. ..

9-38 9-39

.. .. ..

9-40 FP-1 FP-3

LIST OF TABLES Number 1-1 1-2 3-1 3-2 5-1 5-2 5-3 5-4 5-5 5-6 5-7 5-8 5-9 5-10 5-11 5-12 5-13

Title Julian Date Calendar (Perpetual) . . . . . . . Life Support Equipment Inspection Calendar . . . . . . . . . . . . . . . . . . . . . Support Equipment List . . . . . . . . . . . . . Consumable List. . . . . . . . . . . . . . . . . . Inspection Procedures . . . . . . . . . . . . . . LRU-1/P Case and Container Markings. . . . . . . . . . . . . . . . . . . . . MA-1 Sea Rescue Kit Container Markings. . . . . . . . . . . . . . . . . . . . . F-2B Life Raft Case and Container Markings. . . . . . . . . . . . . . . . . . . . . MA-2 Sea Rescue Kit Container Markings. . . . . . . . . . . . . . . . . . . . . Twenty-Five-Man Life Raft/Survival Kit Case Markings . . . . . . . . . . . . . . . . . LRU-1/P LIFE RAFT Markings . . . . . . . LRU-1/P Life Raft Markings (MA-1 Sea Rescue Kit Use) . . . . . . . . . . . . . . . . F-2B Life Raft Markings . . . . . . . . . . . . F-2B Life Raft Markings (MA-2 Sea Rescue Kit Use) . . . . . . . . . . . . . . . . . . Twenty-Five-Man Life Raft Markings . . . Troubleshooting Improper Life Raft Inflation (LRU-1/P). . . . . . . . . . . . . . . . . Troubleshooting Improper Life Raft Inflation (F-2B) . . . . . . . . . . . . . . . . . . .

Page

Number

1-3

5-14

1-4 3-3 3-5 5-4

5-15 5-16

5-6

5-18

5-7

5-19

5-7

6-1 6-2 6-3 7-1

5-8 5-8 5-10 5-12 5-12

5-17

7-2 7-3 7-4

5-15 5-15 5-17 5-21

7-5 7-6 7-7 8-1

Title

Page

Troubleshooting Improper Life Raft Inflation (25-Man) . . . . . . . . . . . . . . . . . Test Pressures Life Raft Assemblies . . . . LPU-6/P Infant’s Survival Cot Case/Container Markings . . . . . . . . . . . . . . . . LPU-3/P and LPU-10/P Life Preservers Case/Container Markings . . . . . . . . . . LPU-3/P and LPU-10/P Cell Markings. . . . . . . . . . . . . . . . . . . . . Troubleshooting Improper Life Preserver Inflation . . . . . . . . . . . . . . . . . . . . . Maintenance Allocation Chart. . . . . . . . . Remarks Codes . . . . . . . . . . . . . . . . . . Tools and Test Equipment . . . . . . . . . . . Accessories and Survival Items, LRU-1/P Life Raft Assembly . . . . . . . . . . . . . . Accessories and Survival Items, F-2B Life Raft Assembly . . . . . . . . . . . . . . . . . Items Packed in Inner Container for KC135 Aircraft (F-2B only) . . . . . . . . . . Accessories and Survival Items, 25-Man Life Raft Assembly . . . . . . . . . . . . . . Accessories and Survival Items, MA-1 and MA-2 Sea Rescue Kits . . . . . . . . . . . Additional Markings . . . . . . . . . . . . . . . A-A-50652 Survival Items . . . . . . . . . . . Required Inflation System Charge . . . . . .

Change 2

5-22 5-26 5-34 5-34 5-35 5-35 6-2 6-3 6-4 7-2 7-8 7-10 7-29 7-37 7-39 7-56 8-28

xi/(xii blank)

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

FOREWORD 1

PURPOSE.

The purpose of this manual is to provide all technical information related to the inspection and maintenance of USAF Flotation Equipment, LRU-1/P, F-2B, and 25-Man Life Rafts, LPU-3/P, LPU-6/P, LPU-10/P, A-A-50652 and Life Preservers. 2

SCOPE.

This manual is divided into 9 chapters as follows: Chapter Chapter Chapter Chapter Chapter Chapter Chapter Chapter

1 2 3 4 5 6 7 8

provides the Introduction. provides Operation and Use. provides Flotation Section. provides Configurations. provides Inspections. provides Maintenance and Repair. provides Folding and Packing. provides Overhaul of Carbon Dioxide Cylinder, Air Cylinder, and Reservoir Air Cylinder. provides Illustrated Parts Breakdown.

Chapter 9 3

SYMBOLS.

-

A dash (-) before an index number denotes a part which is not illustrated. An asterisk (*) flush right of the part number denotes a marking that is to be requisitioned in accordance with DODI 5330.03_AFI 33395. A number sign (#) flush right of a part number indicates that detail parts are listed in a separate manual. Alternate Part The letter “F” before the figure number means “follows” and is used when an assembly or part has not been assigned an index number, and the figure and index number of the preceding part has been used.

*

#

= F

4

ABBREVIATIONS.

All abbreviations used in this manual are in accordance with ASME Y14.38, Abbreviations and Acronyms for Use on Drawings and Related Documents. AC AF AFEPL

Alternating Current Air Force Air Force Electronic Publishing Library

AFOSH AFPDL AFTO AP AR ASSY C CAGE CFE CO2 COML ° DoD DOT DR ESDS F GFE HAZMAT I&S ID IPB IDEA ICC Inlb IPB Lbs LH MAC MAJCOM MPL MSDS NHA NI NIIN No. NSN OD OSHA OSS&E PN PPE PSI PSIG

Air Force Occupational Safety and Health Air Force Publishing Distribution Library Air Force Technical Order Attaching Parts As Required Assembly Celsius Commercial and Government Entity Contractor Furnished Equipment Carbon Dioxide Commercially Available Degree Department of Defense Department of Transportation Deficiency Report Electrostatic Discharge Sensitive Fahrenheit Government Furnished Equipment Hazardous Materials Interchangeability and Substitution Inside Diameter Illustrated Parts Breakdown Innovative Development through Employee Awareness Inventory Category Code Inch Pound Illustrated Parts Breakdown Pounds Left-Hand Maintenance Allocation Chart Major Command Maintenance Parts Lists Material Safety Data Sheets Next Higher Assembly Numerical Index National Item Identification Number Number National Stock Number Outside Diameter Occupational Safety and Health Administration Operational Safety, Suitability and Effectiveness Part Number Personal Protective Equipment Pound per Square Inch Pound per Square Inch Gauge

Change 2

xiii

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 RDI REF RH ROD SCD SDR SMR UOC USAF VAC WRM 5

Reference Designator Index Reference Right-Hand Report of Deficiency Specification Control Drawing Supply Discrepancy Report Source, Maintenance, and Recoverability Usable on Code United States Air Force Volts Alternating Current War Readiness Material

RELATED PUBLICATIONS.

The following publications contain information in support of this technical manual.

List of Related Publications - Continued Number DoD-STD-1686

DoD 1400.25-M DoD 4140.27-M DoD 4160.21-M DODI 5330.03_AFI 33-395

DO43

List of Related Publications Number AFDD 2-1.6 AFI 11-2HC130V3 AFI 11-301V1 AFI 13-208

AFI 33-360 AFI 36-2201 AFI 63-1201 AFI 91-101 AFJMAN 23-215 AFMAN 23-110 AFOSH STD 127-25 AFOSH STD 91-Series AFPD 38-4

ASME Y14.38

Title 49 CFR DoD-HDBK-263

xiv

Title Personnel Recovery Operations HC-130- -Operations Procedures Aircrew Flight Equipment (AFE) Program Personnel Recovery Coordination Cell Operating Procedures Publications and Forms Management Air Force Training Program Life Cycle Systems Engineering Air Force Nuclear Weapons Surety Program Reporting of Supply Discrepancies USAF Supply Manual Confined Spaces Innovative Development Through Employee Awareness (IDEA) Program Abbreviations and Acronyms for Use on Drawings and Related Documents Code of Federal Regulation Transportation Electrostatic Discharge Control Handbook for Protection of Electrical and Electronic Parts, Assemblies and Equipment

H4/H8 JP 3-50 Series MIL-R-8573A OSHA Standard 1910 TO 00-5-1-WA-1 TO 00-20-1

TO 00-20-2 TO 00-25-120 TO 00-25-195-WA-1

TO 00-25-234-WA-1

TO 00-35A-39

TO 00-35D-54

TO 00-5-1 TO 1C-130-Series

Title Electrostatic Discharge Control Program for Protection of Electrical and Electronic Parts, Assemblies and Equipment Department of Defense Civilian Personnel Manual Shelf-Life Management Manual Defense Materiel Disposition Manual Document Automation and Production Service (DAPS) Master Item Identification Base for Air Force I&S Information Cataloging Handbook Non-shatterable Steel Air Reservoirs (Cylinders) Occupational Safety and Health Standards Air Force Technical Order System Aerospace Equipment Maintenance Inspection, Documentation, Policies, and Procedures Maintenance Data Documentation General Fabric Repair Source, Maintenance, and Recoverability Coding of Air Force Weapons, Systems, and Equipment General Shop Practice Requirements for the Repair, Maintenance, and Test of Electrical Equipment Instruction for Procurement, Issue, Use and Maintenance of Medical Kits USAF Materiel Deficiency Reporting and Investigating System Air Force Technical Order System Use the appropriate tech order/job guide for aircraft installation and removal of life raft

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 List of Related Publications - Continued Number TO 1-1-24

TO 1-1A-8 TO 11A10-Series TO 14-1-1

TO 14D3-11-1

TO 14D-Series TO 14S10-2-2

TO 14S1-2-21

TO 14S1-3-51

List of Related Publications - Continued

Title Maintenance, Repair and Electrical Requirements for Fiberglass Airborne Radomes Structural Hardware Flares Technical Manual Organizational Level U.S. Air Force Aircrew Life Support Equipment and Ensemble Configurations Operation, Inspection, Maintenance and Packing Instructions for Emergency Personnel Recovery Parachute with IPB Harness Operation and Service - Distress Marker Light PN ACR/MS-2000M and PN SDU-5/E Operation, Inspection, Storage, Service and Assembly Instructions - Surface to Air Recovery Kits, C130 Operation and Maintenance Instructions for Survival Kit Components and Container Assembly F5B, F5E, CNU-1/P, MC-1, MD-1, ML-2

Number TO 14S1-4-22

TO TO TO TO

14S-Series 15X-Series 31R-Series 32-1-101

TO 32B14-3-1-101

TO 33K-1-100-CD-1 TO 40W4-15-1

TO 40W4-16-1

Title Operation, Maintenance and Disposition Instructions De-Salter Kit, Type MK-2 Survival Kit Container Survival Kit Container Radios and Beacons Use and Care of Hand Tools and Measuring Tools Operation and Servicing Instruction on Torque Indicating Devices TMDE Calibration Intervals Operation and Maintenance Instructions with Illusatrated Parts Breakdown Manual Reverse Osmosis Desalinator MROD-35LA-1 NSN-4610-01-3136086 Operation and Maintenance Instructions with Illustrated Parts Breakdown Manual Reserve Osmosis Desalinator MROD-06LL-1 NSN 4610-01-3136085

6 RECORD OF APPLICABLE TIME COMPLIANCE TECHNICAL ORDERS (TCTOS).

List of Time Compliance Technical Orders TCTO Number

TCTO Title

TCTO Date

None 7

HARDNESS CRITICAL ITEMS (HCI).

If included, items with nuclear survivability requirements are ) and a CAUTION immarked with the HCI symbol ( mediately preceding the item’s description. The HCI symbol ( ) and CAUTION establish special requirements limiting changes and substitutions and that the specific parts listed must be used to ensure hardness is not degraded. All changes to, or proposed substitutions of, HCIs must be approved by the acquiring activity.

8 ELECTROSTATIC DISCHARGE SENSITIVE (ESDS) ITEMS. If included, items containing ESDS parts are marked with the ESDS symbol ( ) and a CAUTION. Items so marked shall be handled in accordance with the ESDS device handling procedures in TO 00-25-234-WA-1.

xv

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 9

CHANGE RECOMMENDATIONS.

Recommendations proposing changes to this technical order shall be submitted on an AFTO Form 22 in accordance with

xvi

TO 00-5-1-WA-1. Forward completed AFTO Form 22 to the Technical Order Management Agency (TOMA) at: [email protected]

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

SAFETY SUMMARY 1

GENERAL SAFETY PRECAUTIONS.

The following general safety precautions are based on AFI 91-101 and OSHA Std 1910 requirements that are not related to any specific procedure, and, therefore, do not appear elsewhere in this manual. These are general safety precautions and instructions that personnel must understand and apply during many phases of maintenance to ensure personal safety, health, and the protection of Air Force property.

4

GENERAL PRECAUTIONS.

The following are general safety precautions that are not related to any specific procedure and, therefore, do not appear elsewhere in this technical manual. These are general safety precautions and instructions that personnel must understand and apply during many phases of operation and maintenance to ensure personal safety and health and the protection of Air Force property. •

Keep away from live circuits. Operating personnel must observe all safety requirements at all times. Do not replace components or make adjustments inside equipment with the electrical supply turned on. Under certain conditions, danger may exist even when the power control is in the OFF position due to charges retained by capacitors. To avoid injuries, always remove power, discharge, and ground a circuit before touching it. Adhere to all lockout/tagout requirements.

•

Resuscitation. Personnel working with or near dangerous voltage shall be trained in modern methods of resuscitation. Information and training sources may be obtained from the Director of Base Medical Services.

The following definitions apply to WARNINGs, CAUTIONs and NOTEs found throughout this publication.

•

Highlights an essential operating or maintenance procedure, practice, condition, statement, etc., which if not strictly observed, could result in injury to, or death of, personnel or long term health hazards.

Finger rings/jewelry. Finger rings have caused many serious injuries. Remove rings, watches, and other metallic objects which may cause shock or burn hazards. Unless specifically allowed by shop safety procedures, remove finger rings during all maintenance activities.

•

Compressed air. Use of compressed air can create an environment of propelled particles. Do not direct air streams towards self or other personnel. Air pressure shall be reduced to less than 30 PSIG and used with effective chip guarding and personal protective equipment.

•

Dangerous pressures. Care must be taken during testing to ensure that all test connections are proper and right. All system components must be compatible with pressure applied. Personnel must be protected by a safety shield or located at a distance sufficient to prevent injury.

•

Personal protective equipment (PPE). If unique local conditions make compliance with the protective clothing or other occupational health requirements

2

WARNINGS, CAUTIONS, AND NOTES.

WARNING and CAUTION statements have been strategically placed throughout this text prior to operating or maintenance procedures, practices, or conditions considered essential to the protection of personnel (WARNING) or equipment and property (CAUTION). A WARNING and a CAUTION will apply each time the related step is repeated. NOTES are used in this manual to highlight operating or maintenance procedures, practices, conditions, or statements which are not essential to protection or equipment. Prior to starting any task, the WARNING, CAUTION, or NOTE for the task will be reviewed and understood. 3

DEFINITIONS.

Highlights an essential operating or maintenance procedure, practice, or statement, etc., which, if not strictly observed, could result in damage to, or destruction of, equipment or loss of mission effectiveness. NOTE Highlights an essential operating or maintenance procedure, condition, or statement.

xvii

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 specified in this manual unnecessary or impractical, obtain an evaluation of the operation from the Bioenvironmental Engineer. The Bioenvironmental Engineer and Base Safety Office will determine the required precautions. •

xviii

Cleaners/chemicals/paints/primers. Some cleaners, chemicals, paints, and primers have adverse effects on skin, eyes, and the respiratory tract. Observe manufacturers’ Warning labels, Material Safety Data Sheets (MSDS) instructions for proper handling, storage, and disposal; and current safety directives. Use only in authorized areas. Unless otherwise indicated in the text, use as described in this Technical Order should not result in any immediate health concerns. Consult the local Bioenvironmental Engineer and Base Safety Office for specific protection equipment and ventilation requirements. See MSDS for powder coating.

•

Environmental controls. Use of certain chemicals in maintenance operations may be restricted by law relative to the amount and type of vapors released to the atmosphere or amount and type of material released into a stream or public waterway. Maintenance supervisors will work closely with Civil Engineering and Medical Service/Bioenvironmental Engineer to ensure that applicable regulations and laws are complied with.

•

Confined space/crawl spaces. Personnel who work within an aircraft space(s), that by design has limited openings for entry or exit, has unfavorable natural ventilation not intended primarily for human occupancy or contains other recognized safety hazard shall comply with the requirements of AFOSH STD 127-25, “Confined Spaces”. An AF Form 1024, “Confined Spaces Entry Permit” will be processed with the local Safety, Health, and Fire Prevention Offices prior to entering the space.

•

Electrostatic discharge (ESD). Certain circuit card assemblies and their components will be damaged by seemingly undetectable electrostatic discharge. Care must be exercised during handling and repair of those items. Use electrostatic discharge (ESD)

precautionary procedures outlined in TO 00-25-234WA-1, DOD-STD-1686, and DoD-HDBK-263. •

Spring-loaded mechanism. A spring-loaded mechanism can cause injury if released in an uncontrolled manner. Always take extra care when disassembling this type mechanism.

•

Do not service or adjust alone. Do not attempt internal service or adjustment of equipment unless another person capable of rendering aid and resuscitation is present.

•

Lifting/Handling. Use the adequate number of personnel or appropriately rated lifting and handling devices to move equipment.

•

Lockout/Tagout. Personnel shall be aware of the hazards associated with unguarded machinery parts, capacitors, gaseous and wet pipe systems, springloaded devices, etc. Lockout/tagout the energy source prior to performing maintenance, adjustments, or other procedures that would bypass safety guards, barriers or otherwise expose personnel to hazardous energy sources. Any equipment, machine, or process that could unexpectedly energize, start-up or release energy will be equipped with a means to lockout/tagout the energy source(s).

•

Torque device/Practices. Personnel must possess and demonstrate a basic familiarization or knowledge of torque devices, practices, and proper use or technique. General precautions shall be applied when using a torque device. Hold the (i.e., life raft, cylinder) fabric or hardware steady or apply a wrench assembly to the fastener (i.e., screw, nut) to be torqued and push or pull with a smooth and steady motion. Precautionary procedures outlined in TO 32B14-3-1-101.

•

Soldering/Desoldering. Avoid breathing fumes generated by soldering/desoldering. Perform all operations in a well ventilated area. Eye protection is required.

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

CHAPTER 1 INTRODUCTION 1.1

INTRODUCTION.

This manual consolidates and updates information on configurations, applications, maintenance, inspection, packing, operation and use of flotation equipment, specifically, the LRU-1/P, 7-Man F-2B, (20-Man Non-Vacuum), and 25-Man Life Rafts, the LPU-6/P Infants Floating Survival Cot, the LPU-3/P Life Preserver, LPU-10/P Harness, and A-A-50652 Commercial (Adult/Child), Life Preservers. It is imperative that all procedures are read, understood, and thoroughly familiarized prior to performing the operations/tasks within this tech order. a. Ensure equipment has been annotated and stowed with the appropriate DD Form(s) and AFTO Form(s). Refer to Paragraph 1.5. b. Ensure (if applicable) equipment is properly donned or fitted. Refer to Chapter 2. c. Ensure (if applicable) equipment has proper environment, storage, special tools, and fabricated tools as needed. Refer to Chapter 3. d. Ensure (if applicable) equipment has been updated. Refer to Chapter 4.

Unauthorized repairs to these assemblies may result in injury or death of the user. e. Ensure equipment is in serviceable condition. Refer to Chapter 5; Chapter 6; Chapter 7; and Chapter 8, if needed.

f. Ensure equipment has been requisitioned, refer to Chapter 9. NOTE •

The procedures detailed in this manual are basic guidelines presented in a logical sequence for proper performance. Minor deviations may be permitted at the option of the Major Command (MAJCOM), providing the intent of this manual is not compromised.

•

Any survival item installed in a life raft sustenance kit, which is prone to spillage/melting, may be placed in polyethylene interlocking seal bags or suitable substitute at MAJCOM option.

TOLERANCES: Less than 2 inches 2 to 12 inches 12.01 to 30 inches 30.01 to 60 inches Over 60 inches Tolerances are not accumulative. 0.050 inch 0.0625 inch 0.125 inch 0.25 inch 0.30 inch 0.375 inch 0.50 inch 0.625 inch 0.75 inch

±0.12 ±0.25 ±0.38 ±0.50 ±1%

inch inch inch inch

=1/20 inch =1/16 inch =1/8 inch =¼ inch =3/10 inch =3/8 inch =½ inch =5/8 inch =3/4 inch

1-1

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 0.875 inch 1.1.1

=7/8 inch

Periodic Inspection and Maintenance.

Unauthorized repairs to these assemblies may result in injury or death of the user. All flotation equipment shall be subjected to periodic inspection and maintenance. As these tasks are the primary assurance of equipment functioning properly, no instance of carelessness or willful neglect shall be allowed to pass unnoticed. 1.1.2 Foreword. The foreword provides technical information, purpose and scope of the manual. Refer to the front of this technical order. 1.1.3 Safety. To prevent inadvertent or hazardous operation, injury or loss of personnel, and protect against failure, breakage, or accident prior to starting any task, personnel shall be fully indoctrinated with the Safety Summary in front of this technical order. 1.2

TRAINING EQUIPMENT MARKINGS.

All equipment utilized for training purposes should be marked, “FOR TRAINING ONLY”, in 1 inch letters for life rafts and ½ inch letters for life preservers. Condemned LPU cylinders retained for training must be marked with yellow paint/lacquer. The marking will be such that all pertinent information on the cylinder is completely obliterated. 1.3

RESPONSIBILITIES.

The maintenance of equipment as outlined in this manual shall be performed by personnel who have been certified in accordance with AFI 36-2201. 1.3.1 Electrical Environmental System Specialist (2A6X6). Servicing, inspecting, recharging, testing, and overhaul will be accomplished by Electro Environmental System Specialists (2A6X6) or qualified/fully-trained personnel at field level, to include contractors. The maintenance of the Inflation Assembly (carbon dioxide cylinder and valve assemblies) should be closely inspected.

1-2

Change 1

1.3.2 Aircrew Flight Equipment Specialist (1P0X1). Maintenance, inspection, repair, screening, issue, and training of equipment covered in this manual will be accomplished by Aircrew Flight Equipment Specialist (1P0X1) or qualified/fully-trained personnel organizational/intermediate level, to include contractors. The maintenance of the Inflation Assembly (carbon dioxide cylinder and valve assemblies) should be closely inspected. 1.3.3 USAF Pararescue and Combat Control Forces. USAF Pararescue and Combat Control Forces may use and maintain specific flotation equipment or components as rescue/recovery and operational support equipment as approved by MAJCOM Directorate of Combat Control and Pararescue Operations. USAF flotation equipment used by pararescue and combat control forces will meet the inspection requirements of this manual with the following exceptions. 1.3.3.1 Minimal corrosion on metal surfaces is acceptable if it does not interfere with the normal operation of the equipment; i.e., the inflation assemblies function smoothly, grommets are secure, pressure fittings seal, etc. 1.3.3.2 Stains and fading of rubber and fabric are acceptable. 1.3.3.3 As soon as possible after salt or fresh water immersion, flotation equipment will be rinsed in fresh water. Inflation assembly will be removed and items inflated and dried in an area out of direct sunlight. 1.3.3.4 In addition to other required markings, life rafts and containers will be marked in 1 inch letters, “FOR PARARESCUE USE ONLY” or “FOR CCT USE ONLY”. Life preserver containers will be marked in ½- inch letters, “FOR PARARESCUE USE ONLY” or “FOR CCT USE ONLY”. 1.3.4 MAJCOMS. The MAJCOMs may authorize the installation/location of additional survival items and accessories through their operational instructions and supplements. A disciplined engineering process as outlined in AFI 631201, Assurance of Operational Safety, Suitability and Effectiveness (OSS&E) must support the authorization. There will be no duplication of items in the survival kit and vest when used together without the approval of the MAJCOM.

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 •

AFTO Form 255, Notice Certification Void When Seal Is Broken.

•

AFTO Form 337, Life Raft/Container Inspection.

•

AFTO Form 338, Survival Kit Record.

1.4.1 Service/Shelf Life. Items assigned a service/shelf life shall be managed and controlled in accordance with DoD Manual 4140.27 and other policies determined by supply or applicable technical orders or markings on item.

•

AFTO Form 339, MA-1 and MA-2 Sea Rescue Kits.

•

AFTO Form 46, Prepositioned Life Support Equipment.

1.4.2 Condemning Equipment. If inflation test and inspections clearly show leakage caused by abrasion, porosity, deterioration, etc., the policy of condemning equipment where more than minor installation defects are observed will effect adequate protection of personnel and allow a gradual retirement of older equipment. Equipment will be removed from service if any doubt of serviceability exists. Condemned equipment will be stripped of all serviceable parts/items and returned to stock or retained locally for repair/replace parts. Turn-in condemned equipment in accordance with DoD 4160.21-M. Ensure equipment has been cut or mutilate (make unfit for intended purpose) as to prevent repair or restoration.

•

AFTO Form 466, Life Preserver Data.

•

DD Form 1574, Serviceable Tag - Material (yellow tag).

•

DD Form 1577, Unserviceable (Condemned) Tag Material (red tag).

•

DD Form 1577-2, Unserviceable (Repairable) Tag Material (green tag).

•

DD Form 1574 will be used to record inspections. It will be stowed in a pocket, if provided, or tied to the outside of the container. Other forms may be used for certification documentation as required in other areas of this publication.

•

Date and type of inspection stenciled or stamped on flotation equipment and date and type of inspection recorded on applicable records shall coincide.

•

Julian date and inspection calendar tables shall be used to calculate inspection intervals. Refer to Table 1-1 and Table 1-2.

1.4

SERVICE LIFE.

Service life for flotation equipment will be determined by condition rather than age. Equipment passing tests and inspections will remain in service indefinitely, except for the following equipment:

1.5

FLOTATION EQUIPMENT RECORDS. NOTE •

•

Computer-generated or electronic forms have been approved for use. These forms are now available in digital form on the Air Force Publishing Distribution Library (AFPDL) or Air Force Electronic Publishing Library (AFEPL). Refer to AFI 33-360. At the option of the MAJCOM, additional pertinent information may be annotated on the applicable records card.

The records used by qualified personnel to provide a systematic means of control to inspect and maintain flotation consist of the following: Table 1-1. Day 1 2 3 4 5 6 7 8 9

Jan 001 002 003 004 005 006 007 008 009

Feb 032 033 034 035 036 037 038 039 040

Mar 060 061 062 063 064 065 066 067 068

Apr 091 092 093 094 095 096 097 098 099

Julian Date Calendar (Perpetual) May 121 122 123 124 125 126 127 128 129

Jun 152 153 154 155 156 157 158 159 160

Jul 182 183 184 185 186 187 188 189 190

Aug 213 214 215 216 217 218 219 220 221

Sep 244 245 246 247 248 249 250 251 252

Oct 274 275 276 277 278 279 280 281 282

Nov 305 306 307 308 309 310 311 312 313

Dec 335 336 337 338 339 340 341 342 343

Day 1 2 3 4 5 6 7 8 9

1-3

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 Table 1-1. Day 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

Jan 010 011 012 013 014 015 016 017 018 019 020 021 022 023 024 025 026 027 028 029 030 031

Feb 041 042 043 044 045 046 047 048 049 050 051 052 053 054 055 056 057 058 059

Mar 069 070 071 072 073 074 075 076 077 078 079 080 081 082 083 084 085 086 087 088 089 090

Apr 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120

Table 1-2. Inspection

Julian Date Calendar (Perpetual) - Continued May 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151

Jun 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181

Jul 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212

Aug 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243

Sep 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273

Oct 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304

Nov 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334

Life Support Equipment Inspection Calendar Days Lost

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Due 30 Days Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan

Jan Feb Mar Apr May Jun Jul Aug

Apr May Jun Jul Aug Sep Oct Nov

0 (-1)* +1 (0)* -2 -1 -2 -2 -2 -2

-1 (-1)* +2 (+1)* -1 0 -1 0 -1 -1 0 -1 0 -1

90 Days

1-4

Dec 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365

Day 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 Table 1-2.

Life Support Equipment Inspection Calendar - Continued

Inspection Sep Oct Nov Dec

Due Dec Jan Feb Mar

Days Lost -1 -2 -2 0

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

May Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr

0 (-1)* 0 (-1)* -2 -2 -3 -2 -3 -2 -2 -3 -0 (-1)* -1 (-2)*

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun

-1 (-2)* -1 (-2)* -4 -3 -4 -3 -4 -4 -1 (-2)* -2 (-3)* -1 (-2)* -2 (-3)*

120 Days

180 Days

*

Correction for leap year

1-5/(1-6 blank)

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

CHAPTER 2 OPERATION AND USE 2.1

GENERAL INFORMATION.

This chapter contains information relating to the operation and use of USAF flotation equipment covered in this manual. In addition to being familiar with flotation equipment, aircraft commanders must ensure that the required flotation equipment is carried on all over-water flights. It is imperative that each crew member be familiar with the donning, fitting, care and operation of the particular life preserver used in the aircraft. Failure to complete the donning procedures could result in injury to the aircrew member. NOTE •

Cylinder and valve assemblies are not furnished with life rafts and must be requisitioned separately.

•

Life rafts MA-1 and E-2B are obsolete and must be replaced with an appropriate life raft to provide adequate space for the maximum personnel capacity of the aircraft.

2.2

LRU-1/P LIFE RAFT ASSEMBLY.

2.2.1 Operation. Inflation of the LRU-1/P life raft assembly can be accomplished manually or remotely. To inflate life raft manually, grasp pull cable assembly handle located under the carrying case/container end flap. Ensure area is free of debris. Throw life raft overboard and pull handle to open carrying case/container and activate inflation assembly. Hold onto handle to prevent loss of life raft. Remote inflation of life rafts installed in aircraft compartments shall be accomplished in accordance with the emergency procedures section of applicable flight manual operating instructions. This is usually accomplished by a sharp pull on the handle of the control cable located in the cockpit or at certain locations on the outside of the aircraft. The control cable is attached to the compartment latching mechanism and the loop or terminal on the free end of the carbon dioxide cylinder release cable. The control cable releases the life raft compartment door latch before actuating the carbon dioxide valve. As the life raft inflates, it automatically ejects from the aircraft compartment. After boarding, the seat is inflated through the topping-off valve with the hand pump provided in the accessory container. If flotation compartment(s) are under inflated, attach hand pump to applicable topping-off valve and top off compartment(s). 2.2.2

Use.

Extreme care shall be taken when assisting personnel into life raft from water, particularly if person is wearing parachute harness or life preserver, since sharp items may puncture life raft. All sharp items, including jewelry and loose items of equipment, shall be properly packaged and stored in the accessory container when possible. To board the life raft, ensure that the accessory container is on the side opposite the cylinder and board on the cylinder side using boarding ladder and boarding line. Persons still in the water will assist person boarding by holding down the side opposite the boarding ladder. First person aboard will assist others to board. 2.3

F-2B LIFE RAFT ASSEMBLY. NOTE •

The 20-Man VLPR can be converted to an F-2B configuration by performing a functional and initial acceptance inspection in accordance with Chapter 5. Ensure the appropriate forms are annotated and the life raft is reidentified with the appropriate information markings as a F-2B.

•

The first survivor aboard the life raft will install the equalizer clamp on the equalizer tube to prevent inadvertent loss of air in the event that one buoyancy tube is punctured.

•

The 20-Man VPLR is obsolete and must be replaced with an F-2B or converted to an F-2B before the end of the 10 years service life.

2.3.1 Operation. Inflation of the F-2B life raft assembly can be accomplished manually or remotely. Prior to inflation of life raft, ensure area is free of debris. When manual inflation is required, the F-2B life raft may be encased in two different carrying case/container configurations. To actuate life raft packed in one carrying case/container, place hand under top of opening in carrying case/container and pull sharply to unsnap top of case/container. Grasp lanyard handle snapped to carrying case/container end flap and throw life raft overboard, pulling hard on lanyard handle to actuate inflation assembly. To actuate life raft packed in the other carrying case/container, grasp pull cable handle, located under

2-1

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 protective flap on carrying case/container end flap, and throw life raft overboard, pulling handle to open carrying case/container and actuate inflation assembly. Hold handle to prevent loss of life raft. Remote inflation of life rafts installed in aircraft compartments shall be accomplished in accordance with the emergency procedures section of applicable flight manual operating instructions. This is usually accomplished by a sharp pull on the handle of the control cable located in the cockpit or at certain locations on the outside of the aircraft. The control cable is attached to the compartment latching mechanism and the loop or terminal on the free end of the carbon dioxide cylinder release cable. The control cable releases the life raft compartment door latch before actuating the carbon dioxide valve. As the life raft inflates, it automatically ejects from the aircraft compartment. 2.3.2 Use. A unique design feature of the F-2B is that it is always right-side-up after inflation. The inflation assembly inflates the circular tubes and boarding ramps only. In the event that the inflation assembly does not function properly, the equalizer tube distributes gas equally between each circular tube. After boarding, the floor support (and boarding stations, applicable to earlier productions only) is inflated with the hand pump provided in the accessory container. The circular tubes may be topped off, if necessary, from either side of the life raft floor. 2.3.2.1 Air-Lock Carbon Dioxide Inflation Valve, PN 9864-05, controls the flow of carbon dioxide into the two inflation tubes of the F-2B life raft. When connected to a charged cylinder, the valve serves as the interface connection between the stored carbon dioxide and the life raft tubes to be inflated. Upon application of a pull force (20-30 lbs) to the cable assembly, the actuating cam assembly rotates, causing the plunger assembly to pierce the cartridge disc and release the vent manifold valves from the full open position. This plunger actuation allows the stored carbon dioxide to be delivered from the MS cylinder to the life raft tubes for inflation. The design incorporates a rupture disc to release carbon dioxide to atmosphere in case of excessive cylinder pressure. The design also incorporates vent ports that prevent air from being trapped in the life raft causing inflation when the aircraft is at altitude. These ports are mechanically bypassed and sealed when the valve is actuated. Prior to actuation, the cartridge disc provides a leak-proof seal. After inflation, the vent manifold valves seal and prevent flow of carbon dioxide from one inflation tube to the other. Pressure is applied to the O-ring seals only during inflation. They are not a leak path before or after inflation. 2.3.2.2 Instructions to aid in erecting the canopy over the life raft are stenciled on the floor of the life raft. The Morse code is also stenciled on the floor near the floor support or life raft tube. Additional instructions are stenciled at various applicable locations.

2-2

Extreme care shall be taken when assisting personnel into life raft from water, particularly if person is wearing a parachute harness or life preserver, since sharp items may puncture life raft. All sharp items, including jewelry and loose items of equipment, shall be properly packaged and stored in the accessory container when possible. 2.3.2.3 Once in the life raft, all persons should seat themselves on the floor and remain in position if possible. In heavy seas, shift most of the load to the upwind side of the life raft. Movement within the life raft should be restricted as much as possible to keep friction at a minimum. 2.4

MA-1 AND MA-2 SEA RESCUE KITS.

2.4.1 Function. The MA-1 and MA-2 sea rescue kits are dropped free fall and in trail during pass over target. Upon deployment of kits from aircraft, life rafts are automatically inflated. Inflation is accomplished by a static line attached to the loop end of the carbon dioxide release cable. When correctly dropped, a straight line pattern will be formed on the water with an inflated life raft at each end and the floating supply containers between them. After boarding, the seat/ floor of life raft shall be inflated through the topping off valve with the hand pump provided in the supply container. If flotation compartment(s) are under inflated, attach hand pump to applicable topping-off valve and top off compartment(s). 2.4.2 Operation. Successful life raft/survivor contact is largely dependent upon the drift characteristics of the deployed MA-1 and MA-2 kits and the targets. Tides and currents will cause the kit and the target to drift a like amount and may be ignored when dropping the kit. Wind will affect the kit and survivors varying amounts depending upon the amount of area exposed above the water. When the rescue kit is dropped in trail in the water, the effect of the wind upon the small partially submerged supply containers is negligible. After being dropped, the two life rafts with their high freeboard will begin to drift downwind in direct proportion to the velocity of the wind, until their drifting is partially retarded by the supply containers which tend to act as sea anchors. Thus, when the rescue kit is deployed in the water, wind conditions will cause the kit to gradually become Ushaped, partially encircling more slowly drifting targets. The rescue kit under varying wind conditions will drift more rapidly than a survivor in a life preserver, a one-man life raft, or an exposure suit. The drift is approximately the same speed as a seven-man life raft, but not as fast as a 20-Man life raft. When dropping the rescue kit to survivors in one-man life

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 rafts or wearing life preservers, where the surface wind is less than 15 knots, the crosswind pass shall be made approximately 50 feet upwind of the target. The rescue kit shall be dropped from a 300-foot altitude on a crosswind pass over the target area. When the rescue kit is dropped to survivors in a 20-Man life raft and the surface wind is less than 15 knots, the crosswind pass shall be approximately 50 feet downwind. When surface winds exceed 15 knots, these distances shall be increased by 25 feet for each 10 knots the surface wind exceeds the 15 knot basic. Drift will be the same for both the MA-1 and the MA-2 rescue kits. When dropping the rescue kit to survivors in a seven-man life raft, the speed of the surface wind may be ignored. Drop procedures are contained in AFI 11.2HC130 V3 and AFDD 2-1.6. 2.5

TWENTY-FIVE-MAN LIFE RAFT ASSEMBLY.

2.5.1 Operation. During an emergency condition, the life raft/survival kit assembly is thrown from the aircraft into the water. The deployment mechanism is automatically actuated during its descent to the water. When activated, the operating lanyard first dislodges three retaining pins that secure the case/container harnesses closed, allowing the case/container halves to fall away. As the life raft continues to fall, the compressed air cylinders (reservoirs) are actuated, allowing charge to inflate life raft. To augment the gravity action for life raft deployment and inflation, the lanyard assembly can be manually pulled to open case/container and actuate inflation assembly. The discharge valves are opened, allowing compressed air to flow to the jet pumps through flexible hoses. The flow of compressed air through the jet pump inlet port acts against a spring loaded piston. The force of the compressed air causes the piston to shift the nozzle which permits the jet pump flapper valve to open. A low pressure area in the pump body, created by the high velocity of the compressed air, causes ambient air to be drawn into the pump. The ambient air augments the compressed air during the inflation of the life raft. A pressure relief valve, located on each flotation tube, activates at a predetermined pressure to prevent damage from excessive air pressure during inflation. The life raft is packed in a manner which allows the jet pumps to clear the case/container immediately upon case/ container separation. As the initial inflation of the life raft takes place in the immediate vicinity of the jet pumps, the inflated area will serve to hold the pump clear of the water as the life raft lands on the water. As the pressure in the cylinder (reservoir) is depleted, spring pressure returns the piston and nozzle to the closed position, closing the jet pump flapper valve. The inflation pressure buildup continues through the introduction of the remaining compressed air into the life raft. The entire inflation process takes 9 seconds. 2.5.2 Use. After boarding the life raft, the floor support is inflated through the topping-off valve with the hand pump. If flotation compartment(s) are under inflated, attach hand pump to applicable topping-off valve and top off compartment(s).

2.5.3

Seating.

Extreme care shall be taken when assisting personnel into life raft from water, particularly if person is wearing a parachute harness or life preserver, since sharp items may puncture life raft. All sharp items, including jewelry and loose items of equipment, shall be properly packaged and stored in the accessory container when possible. Once in the life raft, all persons should seat themselves on the floor and remain in position if possible. In heavy seas, shift most of the load to the upwind side of the life raft. Movement within the life raft should be restricted as much as possible to keep friction at a minimum. 2.6

EMERGENCY REPAIR.

Emergency repair of life rafts when in water is accomplished by the use of metal clamp type plugs provided in the accessory equipment of each life raft. The metal clamp type plug is installed as follows: a. Loop cord around wrist to prevent loss. Dip plug in water to make insertion easier. b. Push bottom plate through hole in fabric. (If hole is too small, carefully enlarge so plate can be forced in.) c. Pull bottom plate back against inner fabric surface and slide top plate over screw against outer fabric surface. Adjust plug to cover hole completely and hold in place. d. Screw down wing nut firmly. Bend wire down and around wing nut. Remove cord from wrist. NOTE •

It is imperative that each crew member be familiar with the donning, fitting, care and operation of the particular life preserver used in the aircraft. Failure to complete the following procedures could result in personal injury to the crew member.

•

Life Preservers LPU-1/P, LPU-5/P, MB-1 and MD-1 are obsolete and should be replaced with A-A-50652, Commercial Life Preserver Assembly.

2-3

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 2.7

LPU-6/P INFANT’S FLOATING SURVIVAL COT.

2.7.1 Function. The LPU-6/P is removed from the carrying case/container and unrolled. The actuation lanyard knob is then pulled sharply outward, inflating the cot. The cot may be topped off by using the oral inflation valve. Once inflated, pull back the canopy as far as possible by unfastening hook and pile tapes on the sides to allow for easier insertion of infant. 2.7.2 Operation and Use. Proper use and operation of the LPU-6/P is essential to provide maximum safety for the infant. For proper usage, proceed as follows: NOTE All passengers will be instructed in the use and operation of the infant’s cot before or during overwater flights. For added protection, a baby blanket should be placed around or under infant before placing infant in cot.

bon dioxide cylinder. The flotation cells are mounted one above the other with each incorporating an oral inflation tube. The A-A-50652 (commercial) life preserver assembly is a reversible vest type, designated to encircle the neck of adults and children that are over 18 months old. To inflate, grasp the pull tabs/knobs and jerk sharply outward away from the body. When required, additional inflation can be accomplished by forcing air into the cell through the oral inflation tube. NOTE It is not necessary to open the oral inflation valve on the A-A-50652 (commercial) life preserver assemblies. 2.8.2 Donning. To don the A-A-50652 (commercial) life preserver assembly, proceed as follows: NOTE •

It shall be the responsibility of the aircraft commander or a crew member so designated to properly instruct passengers in the operation of the preserver prior to each over-water flight.

•

Due to the various manufacturers of the A-A50652 (commercial) life preserver assembly, minor physical differences and markings may be noted.

a. Place infant feet first into cot in a lying position with head as far up toward closed end of hood as possible. b. Tie upper retaining tape under armpits and across chest snugly. c. Tie lower retaining tape across upper thigh or hip area. d. Pull canopy up over arch and position hole in flap over lamp. Press hook and pile tape together on sides and top securely so as to prevent water entry. e. Move suspension webbing to center of cot and snap in place so that retention lanyard keeper is readily available. f. Secure infant and cot to seat using seat belt. After ditching, the cot can be carried by the straps to the nearest exit.

a. Pass head through opening provided and position preserver around neck of the wearer. b. Fasten buckle(s)/strap(s) and pull tab(s) tight. NOTE LPU-2/P shall be modified and reidentified as an LPU-10/P Life Preserver Assembly. 2.9 LPU-3/P AND LPU-10/P LIFE PRESERVER ASSEMBLIES. NOTE

Never throw or drop the cot and infant from the aircraft. g. In the event the exit is a number of feet above the water, the cot can be lowered by the lanyard to the water. 2.8 A-A-50652 (COMMERCIAL) LIFE PRESERVER ASSEMBLY. 2.8.1 Function. The A-A-50652 (commercial) life preserver assembly incorporates the use of two single inflators, each containing a single MIL-C-601, Type III, 16-gram car-

2-4

Several attempts may be required to activate LPUs. 2.9.1 Function. The LPU-3/P and 10/P life preserver assemblies are inflated with a sharp tug by pulling downward and slightly outward on the lanyards that extend from the lower front corner of each container. If a failure occurs, the life preserver may be orally inflated. Ensure that the inflator levers on the LPU-3/P and 10/P are locked in the full open position. If not in this position, cells can leak through the inflator vents. No attempt should be made to close these levers after actuation. After inflation, connect the cells with the adjustable hook and pile tape connectors provided.

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 2.9.2 Donning. When the LPU-10/P life preservers are worn with the BA-Series Back Style Parachute or SRU-21/P Survival Vest, the LPU-10/P is donned before the parachute or survival vest, and the life preservers are pulled through each arm hole to hang over parachute or vest.

is no longer required, it shall be returned to original configuration. After preserver is properly adjusted, thread free ends of adjustment straps through elastic keepers. To fabricate a larger waist strap refer to Paragraph 3.8.2.3.2.

2.9.2.1 LPU-10/P. To don and adjust the LPU-10/P life preservers, proceed as follows:

e. Hand tack strap ends to shoulder strap spacer or straps. This will eliminate unnecessary bulges under the parachute harness. The waist strap can also be tacked or stowed in the elastic keeper.

a. Pass arms through shoulder straps and position a container under each armpit. Ensure actuating lanyard exits from lower front corner of each container. b. Fasten waist strap to hold cell containers in position. To fasten waist strap, hold buckle at an angle of approximately 90 ° F with respect to clip and insert curved end of clip into slot of buckle. If curved end of clip can be inserted into buckle slot without assuming a 90 ° F angle, tap curved portion with a hammer until a 90 ° F angle is attained before waist strap can be fastened. This is essential for prevention of inadvertent release during emergencies.

f. While boarding life raft or during water recovery by helicopter hoist pickup device (except basket type), the velcro tape cell connectors may be unfastened and arms placed inside to allow unobstructed access to the life raft or pickup device.

c. Adjust the shoulder straps so that preserver containers are positioned just below armpits. Retain preserver as high under armpits as can be tolerated comfortably.

2.9.2.2 LPU-3/P Installation on Seat Style Parachute Harness. The LPU-3/P is donned with the seat style parachute harness. Installation of the LPU-3/P preserver on seat style parachute harness will be held to a minimum and only when LPU-10/P preservers are not available, or when operational requirements support the use of this preserver. In addition, the LPU-3/P will not be installed on any harness not having two canopy releases. For attachment to the harness refer to Chapter 4.

d. Adjust waist strap for a snug fit. If waist strap of the life preserver is too tight and causes discomfort when wearing winter clothing or waist is generously proportioned. A new waist strap may be fabricated, only on a required basis. After determining that larger waist strap

2.9.2.3 LPU-3/P Installation on Back Style and Integrated Torso Parachute Harnesses. The LPU-3/P will be used only with back style and integrated torso parachute harnesses having two canopy releases. For attachment to back style parachute harnesses, refer to Chapter 4.

2-5/(2-6 blank)

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

CHAPTER 3 FLOTATION SECTION SECTION I FACILITIES 3.1

GENERAL.

3.1.1 Requirements. The flotation section is a work area designated for the maintenance of life rafts and life preservers. If possible, the section should be located with the parachute shop. The area must be large enough to permit inflation and inversion of 20- and 25-Man life rafts. Storage capability must be provided for storage of high pressure cylinders. 3.1.2 Level of Maintenance. All flotation sections are equipped to perform specific levels of maintenance procedures, depending upon equipment and personnel. These sections shall be manned by qualified/fully-trained survival equipment specialists. 3.2

FLOTATION SECTION LAYOUT.

lockers or cupboards divided into compartments large enough to accommodate life preservers. Open racks or shelves may be used as a substitute for closed lockers. The shelves should be designed to allow storage of life preserver at least 4 inches from walls and 12 inches from the floor. Storage facilities shall be well ventilated and free of dust and other contaminates such as oil, acid and cleaning fluids. Life preservers shall not be stored directly over hot water pipes, heating apparatus, or in direct sunlight. Additional adequate storage facilities shall be established for organizational level use by squadrons. When bins are not available, assemblies may be stored in shipping containers, suitable boxes, or containers locally manufactured. Containers locally manufactured shall be of sufficient strength to prevent any pressure being placed on stored items when in a stacked condition. Serviceable accessories replaced by later designed accessories will be returned to their applicable classes for disposition.

3.2.1 Life Raft Inspection and Packing Area. Area must be smooth, free of splinters, sharp projections, and oil stains. Area with abrasive characteristics shall be covered. Area must not be a thoroughfare.

3.2.5 Washroom. The washroom is used for cleaning flotation equipment. It shall contain a large tub for this purpose. Hoist lines should be installed over the tub to facilitate handling.

3.2.2 Life Raft Storage Area. Bins and other storage facilities shall be constructed to accommodate packed and unpacked life rafts. These facilities shall consist of lockers or cupboards divided into compartments large enough to accommodate life rafts. Open racks or shelves may be used as a substitute for closed lockers. The shelves should be designed to allow storage of life rafts at least 4 inches from walls and 12 inches from the floor. For transient activities, footlockers may be provided. Storage facilities shall be wellventilated and free of dust and other contaminants such as oil, acid, and cleaning fluids. Life rafts shall not be stored directly over hot water pipes, heating apparatus, or in direct sunlight. Additional adequate storage facilities shall be established for organizational level use by squadrons. Serviceable accessories replaced by later designed accessories will be returned to their applicable classes for disposition. Pyrotechnic or signal flares are flammable and shall be stored in accordance with existing regulations.

3.2.6 Rescue Kits Stored or Stocked as War Readiness Material (WRM) Assets. Assembled rescue kits stored in a READY FOR USE status as WRM assets need not be inspected as often as in-service kits provided they are in controlled storage areas. These rescue kits may be subjected to a Periodic Inspection at intervals not to exceed one (1) year plus or minus 10 days of established intervals. At the fourth inspection cycle, life rafts shall be subjected to a Functional Test; except the LRU-1/P and F-2B life rafts. See note below.

3.2.3 Life Preserver Inspection and Packing Area. Area must be smooth, free of splinters, sharp projections, and oil stains. Area with abrasive characteristics shall be covered. Area must not be a thoroughfare. 3.2.4 Life Preserver Storage Area. Bins and other storage facilities shall be constructed to accommodate packed and unpacked life preservers. These facilities shall consist of

NOTE The LRU-1/P and F-2B life rafts will be functionally tested only when the attached inflation assembly is due a hydrostatic test in accordance with Chapters 5 and 8. 3.3

ENVIRONMENTAL CONDITIONS.

3.3.1 General. Flotation equipment should be inspected, repaired, and packed under regulated temperature and humidity conditions. Accordingly, these conditions must be controlled in the flotation equipment section, except the advanced base or temporary facilities where combat or opera-

3-1

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 tional requirements may make it impractical. In general, the section shall not be excessively damp or dusty. It shall be continuously or frequently ventilated. NOTE In high humidity and moisture areas, complete inspection may be required more often. This determination will be made locally. 3.3.2 Requirements. The temperature and relative humidity in the flotation equipment section shall be maintained within the limits indicated in Figure 3-1. Ideal conditions are a temperature of 24 °C (75 °F) and a relative humidity of 60 percent. The shaded area acceptable zone on the temperature-humidity chart, shown in Figure 3-1, outlines the allowable environmental limits inside the shop and illustrates favorable and unfavorable conditions. These limits are affected by two variables: relative humidity and temperature. Recordings of these variables shall be taken at least three times

Figure 3-1.

3-2

daily, using the relative humidity and temperature indicator shown in Figure 3-1, to ensure that favorable conditions are maintained. Relative humidity is the ratio between the amount of water vapor in the air and the amount the air could hold at a given temperature. Relative humidity is usually written as a percentage. Specific humidity is the weight of the water vapor found in a given volume of air. Relative humidity limits must be maintained to prevent condensation in metal parts. 3.3.3 Control. The ideal method for regulating air temperature and humidity is an air-conditioning system. To obtain maximum effectiveness from the air conditioner, a continuous check shall be made of the physical conditions of the shop. 3.3.4 Lighting. Lighting should be adequate and free of shadows. Fluorescent lighting is most desirable for this purpose.

Flotation Section Temperature and Humidity Conditions

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

SECTION II HIGH PRESSURE CYLINDER STORAGE 3.4

3.6

GENERAL.

Any charged or partially charged cylinder, of any size, is potentially dangerous and must always be handled with care. Never use cylinders for gases or liquids other than indicated by cylinder markings and serial numbers. 3.5

STORAGE.

a. Store cylinders in a manner that will avoid damage to cylinders and valves. Install diffuser plugs on stored inflation assemblies. b. Ensure compliance with applicable directives such as: DoD, DOT, ICC, OSHA, and AFOSH directives.

HANDLING.

Handle all compressed gas cylinders carefully so that they do not drop or strike each other violently.

SECTION III SPECIAL TOOLS 3.7

3.7.3 Sewing Machines. Service manuals covering each class and variety of sewing machines are furnished with new machines. Replacement manuals may be ordered, through local purchase, from the sewing machine manufacturer. Servicing of all sewing machines shall be performed in accordance with the applicable sewing machine maintenance manual. Adjustment to sewing machines shall be made only by qualified personnel.

REQUIREMENTS.

To prevent injury to personnel and damage to equipment ensure the proper tools are used when performing a particular task. 3.7.1 General. A set of tools and equipment is required for each flotation shop. Most tools and equipment are stowed in a drawer or consolidated tool kit. Certain flotation assemblies require special tools. Tools and equipment shall be counted prior to and after inspecting and packing life rafts and life preservers.

3.7.4 Shop Support Equipment. Table 3-1 and Table 3-2 list equipment and consumable materials that are commonly found in the flotation section.

3.7.2 Calibration. It is the responsibility of supervisors to ensure that the equipment and tools used throughout this manual are calibrated periodically by qualified personnel. Table 3-1. Nomenclature

Support Equipment List

Reference Number

Nomenclature Adapter Assembly

Adapter, Deflation

Local Fabricate Refer to Chapter 3

Adapter, Pull Test

Adapter, Multiple Spline Key

Adapter, Top-Off

Air Compressor

22B19216 5180-00-111-7873 or equivalent 4310-Class

Cap Diffuser

24384 4820-01-279-3500 Chamber/Cabinet, Environment

CO2 Transfer Unit

Reference Number 9867-02 4220-01-206-6345 or equivalent 9141, 4220-00-050-1947 Local Fabricate Refer to Chapter 3 23D19238-1 4920-00-133-2174 or equivalent

TC2A 6636-00-927-2200 or equivalent

MIL-R-12551, 3655 Class

3-3

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 Table 3-1. Nomenclature Clamp, Equalizer CO2 Recharging Schematic Detector, Leak

Gauge, Push-Pull Dial

Heater Gun

Multimeter O-ring Installation Tool O-ring Installation Tool Packing Frame, C-130 Relief Valve Locking Tool Roller, Hand

Scale, Weighing, Digital

Scale, Weighing

Stop Watch, White

Test Fixture

Tester, Spring Resiliency

Torque Screwdriver

Vacuum Pump, Unit

3-4

Support Equipment List - Continued

Reference Number 67A319D19 or Salvageable Local Fabricate Refer to Chapter 3 Must meet or exceed ASTM E1002-93 and ASME requirements for leak detection DPPH-50 4925-00-473-0108 or equivalent EP-5UL 4940-01-028-7493 or equivalent 6625-Class TA02612-35 Local Fabricate TA02612-7 Local Fabricate Local Fabricate Refer to Chapter 3 D19747-101 Local Fabricate GGG-R-00620 5120-00-243-9401 or equivalent 6600-50 6670-01-275-0937 or equivalent MIL-S-11581 or A-A52021-1 6670-00-514-4117 or equivalent A-A-2580 6645-00-250-4680 or equivalent

Local Fabricate or equivalent Refer to Chapter 3 MIL-T-43560 or DPP-30 6635-00-578-5286 or equivalent TQS6 or A-A-2414 5120-00-021-2041 or equivalent 61E44688 4310-00-052-5015 or equivalent

Nomenclature Cleaner, Vacuum Gauge, Pressure

Gun/Nozzle, Air Blow, OSHA Approved

Reference Number A-A-2952 7910-00-550-9123 or equivalent P633 6685-00-953-9090 or equivalent

5536K12 4940-01-320-7328 or equivalent

Inner Container Packing Local Fabricate Frame, MA-1 & MA-2 Refer to Chapter 3 Micrometer Multimeter, Digital O-ring Installation Tool Packing Bar, 25-man

5210-00-540-2973 or equivalent 6625-Class TA02612-36 Local Fabricate Local Fabricate

Pliers, Crimping

Local Purchase

Rewiring and Pull Cable Gauge Tools Rope Coiling Jig, MA-1 & MA-2

Local Fabricate Refer to Chapter 3 Local Fabricate Refer to Chapter 3

Scale, Weighing

AAA-S-121 6670-00-255-0239 or equivalent

Streamers, Life Raft

Local Fabricate Refer to Chapter 3

Tensionmeter, Dial, Push-Pull

DPP-10 6635-00-880-7868 or equivalent

Tester, Spring Resiliency, DPP-80 or MIL-T-43560 Scale Push-Pull 6635-00-918-2788 or equivalent Vacuum Cleaner

115 VAC, WC-421 7910-00-550-9123 or equivalent

Valve Core Tool

GA144A or ZZ-V-25 2640-00-050-1229 or equivalent

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 Table 3-1. Nomenclature Wrench, Torque

Wrench, Torque, Dial

Support Equipment List - Continued

Reference Number GGG-W-686 5120-00-270-3121 or equivalent TQ50A changed TE50A 5120-01-355-1766 or equivalent

Table 3-2.

Nomenclature Wrench, Torque, Dial

Reference Number TE250 or A-A-2411 5120-00-640-6365 or equivalent

Wrench, Torque, Micrometer

1501M 5120-01-426-7567 or equivalent

Consumable List

Nomenclature and Reference Number Nomenclature and Reference Number Adhesive MIL-A-5540, Class 3, Form Adhesive, M11628 8040-01-303-0401 or B, 1 qt 8040-00-142-9913 or equivaequivalent lent Adhesive MMM-A-139B, Class 2 or 3 Adhesive MIL-A-5540, Class 3, Form 8040-00-262-9057 or FA-1005 or B, 1 pint 8040-00-515-2246 or equivalent equivalent Adhesive Uralane, 8089-A/B 8040-00- Adhesive MMM-A-1058 or CC-249-01 828-4936 or equivalent or 3M Super 77 8040-00-938-6860 or equivalent Bag, Polyethylene A-A-1799, Clear, Bag, Polyethylene A-A-1799, Clear InInterlocking 8105-00-137-9131 or terlocking 8105-00-837-7753 or equivalent equivalent Braid, Textile MIL-B-371, Type IV, Brush, Acid A-A-289 7920-00-514-2417 Class 4 8315-00-100-4581 or or equivalent equivalent Brush, Wire A-A-2078, Brass 7920-00- Carbon Dioxide BB-C-101, Type I or II, 269-1259 or equivalent Grade B 6830-00-245-0199 or equivalent Clinch Plate, Snap AN227-49B or Cloth, Cleaning MIL-C-85043, Type 2 MS27982-1B 5325-00-641-0607 or or A-A-59323 7920-00-044-9281 or equivalent equivalent Cloth, Coated MIL-C-21109, Type II, Cloth, Coated MIL-C-22787, Type IV, Orange 8305-00-132-5006 or Red 8305-00-935-2831 or equivalent equivalent Cloth, Coated, MIL-C-19002, Type I Cloth, Duck MIL-C-7219, Type III, 6305-00-060-9136 or equivalent Green 8305-00-257-5303 or equivalent Cloth, Laminated MIL-C-43006, Type Cloth, Laminated MIL-C-43006, Type I, I, Class 3, Form 1, Green 8305-00Class 3, Form 1, Yellow 8305-00-926926-1585 or equivalent 1587 or equivalent Cloth, Laminated MIL-C-23070, VAR Cloth, Laminated MIL-C-43006, Type I, C, Orange, 8305-00-132-5008 or Class 3, Form 1, Gray 8305-00-926equivalent 1584 or equivalent Coating MIL-C-490 or TT-C-490 Compound, lubricant DC-7 6830-002940-01-415-5891 or equivalent 975-0712 or equivalent Compound, Cleaning MIL-PRF-87937, Compound, Cleaning Spray Nine 7930Type II 6850-01-390-7828 or 01-393-6747 equivalent

Nomenclature and Reference Number Adhesive RTV-732, MIL-A-46106 8040-00-225-4548 or equivalent Adhesive MMM-A-130 or A-A-1936 8040-00-754-2685 or equivalent Applicator Wood GGA-616 6515-01464-0432 Beeswax, Technical C-B-191 916000-253-1171 or equivalent Brush, Paint H-B-491, Size 8, 1 inch 8020-00-205-6511 or equivalent Cement, Epoxy M11055, Style P Local Purchase Cloth, Coated MIL-C-20696, Type II, Class 1, Orange 8305-00-008-1880 or equivalent Cloth, Coated MIL-C-83489, Type II, Polyurethane, Dark Blue 8305-01335-3129 or equivalent Cloth, Laminated MIL-C-43006, Type III, Class 1, Form 1, Yellow 830500-629-8371 or equivalent Cloth, Laminated MIL-C-23070, Var C, Yellow/Blue 8305-00-926-6489 or equivalent Cloth, Laminated MIL-C-43006, Type I, Class 3, Form 1, White 8305-00926-1586 or equivalent Compound, Cleaning MIL-PRF-680, Type III or A-A-59601-3B 6850-01377-1916 or equivalent Compound, Leak Test MIL-PRF25567, Type I 6850-00-621-1820 or equivalent

3-5

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 Table 3-2.

Consumable List - Continued

Nomenclature and Reference Number Nomenclature and Reference Number Compound, Cleaning MIL-PRF-87937, Compound, Lubricant Dow Corning 7 Type IV 6850-01-461-0060 or Local Purchase equivalent Compound, Sealing MIL-S-46163, Loctite 271 8030-00-111-2762 or equivalent Compound, Sealing Loctite 242, MILS-46163 8030-01-104-5392 or equivalent Cord, Fibrous MIL-C-5040, Type I, Natural 4020-00-240-2154 or equivalent Cord, Fibrous MIL-C-7515, Type II, Natural 4020-00-530-0174 or equivalent Cord, Fibrous MIL-C-5040, Type 1A, Red 4020-00-531-2813 or equivalent Enamel, Black, MIL-E-24306 801000-871-3477 or equivalent

Nomenclature and Reference Number Compound, Primer, Sealing MIL-S22473, Grade T, Form R, or ASTM D5363 8030-00-082-2508 or equivalent Compound, Sealing PLS No. 2 8030-00- Compound, Sealing DC-4 or MIL-S063-7176 or equivalent 8660 6850-00-880-7616 or equivalent Compound, Silicone DC 200, 200 Cen- Cord, Fibrous MIL-C-5040, Type III, tistrokes Viscosity 6850-00-781-3015 Natural 4020-00-240-2146 or or equivalent equivalent Cord, Fibrous MIL-C-5040, Type II, Cord, Fibrous MIL-C-5040, Type III, Camouflage or Natural 4020-00-262Red 4020-00-262-2147 or equiva2019 or equivalent lent Cord, Fibrous MIL-C-5040, Type III, Cord, Fibrous MIL-C-5040, Type I, Olive Drab 4020-01-388-1339 or Olive Drab 4020-00-935-5761 or equivalent equivalent Cord, Fibrous MIL-C-5040, Type 1A, Corrosion Remover MIL-C-10578 Olive Drab 4020-01-214-5128 or 8030-00-145-0084 or equivalent equivalent Enamel, Paint, Gray MIL-P-2444 1/23 Enamel, Paint TT-E-489, Gray; 80108010-01-350-4744 or equivalent 00-297-2092 or equivalent or A-A2962 Enamel, Paint TT-E-489, Orange-Yellow Enamel, Paint MIL-P-24441/23, Black or A-A-2962 8010-00-527-2045 or 8010-Class or equivalent equivalent Fastener, Cap Snap MS27980-1B 5325- Fastener, Cap Snap MS27983-1 532500-359-6844 or equivalent 00-891-9073 or equivalent Fastener, Post Snap MS27983-4 5325Fastener, Snap MIL-F-10884 5325-0000-276-4978 or equivalent 985-6718 or equivalent

Enamel, Paint TT-E-489, or A-A-2962 Yellow 8010-00-584-3081 or equivalent Fastener, Cap Snap AN227-11B 532500-276-4954 or equivalent Fastener, Post Snap AN227-14B or MS27981-5B 5325-00-250-6858 or equivalent Fastener, Snap Post MS27981-5N Fastener, Snap Socket AN227-12 53255325-00-484-5478 or equivalent 00-174-2889 or equivalent Fastener, Socket Snap MS27980-6B Fastener, Socket Snap MS27983-2N 5325-00-285-6250 or equivalent 5325-00-486-7929 or equivalent Fastener, Stud Snap MS27983-3 5325- Fastener, Stud Snap AN227-13B 532500-276-4908 or equivalent 00-276-4910 or equivalent

Fastener, Socket Snap AN227-12B 5325-00-276-4966 or equivalent Fastener, Socket Snap AN277-50B or MS27982-2B 5325-00-641-0611 or equivalent Fastener, Stud Snap AN227-51N or MS27982-4N 5325-00-763-5758 or equivalent Fastener, Tape, Pile Type III, Class 1 MIL-F-21840, 2 inch wide Black or A-A-55126 8315-00-926-4930 or equivalent Flux, Soldering MIL-F-14256 343900-220-3827 or equivalent

Fastener, Tape, Hook, MIL-F-21840, Fastener, Tape, Hook Type III, Class 1 Type III, Class 3, 1 inch wide Green MIL-F-21840, 2 inch wide Black or or A-A-55126 8315- 00-001-3587 or A-A-55126 8315-00-926-4931 or equivalent equivalent Fastener, Post Snap AN227-52B or Felt, Sheet CF206, 1.4 inch 5330-00MS27982-5B 5325-00-641-0449 or 261-8496 or equivalent equivalent Gloves, Chemical MIL-G-87066, Size Glove, Welder’s PN PC/WG TAC 8415- Grease, Aircraft MIL-PRF-27617, 10 8415-01-013-7382 or equivalent 01-519-7487 or equivalent Type II, or Krytox 240AB 9150-01088-0498 or equivalent Grease, Aircraft MOS2 1195 Local Grommet MS20230-B20 5325-00-291- Ink, Marking A-A-208, Type II, White 0302 or equivalent 7510-00-161-0815 or equivalent Purchase Ink, Marking A-A-208, Type I, Black Ink, Marking, A-A-208, Type III, Black, Ink, Marking MIL-I-6903, Orange/ 7510-00-224-6734 or equivalent 7510-00-469-7910 or equivalent Yellow 7510-00-634-6583 or equivalent

3-6

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 Table 3-2.

Consumable List - Continued

Nomenclature and Reference Number Nomenclature and Reference Number Ink, Marking MIL-I-6903, Type IV, or Insulation Sleeving M23052/5-209-C, A-A-59291 Black 7510-01-235-2607 MIL-L-23053/5, Class 2, Clear 5970or equivalent 00-767-0511 or equivalent Lacquer Bright Blue 8010-00-242Lacquer Bright Green 8010-00-257-5375 6318 or equivalent or equivalent Lacquer, TT-L-32, Type 2 or A-ALacquer TT-L-32, Type 2, or A-A-3165 3165, Black 8010-00-257-5378 Red 8010-00-161-7384 or equivalent Lacquer TT-L-32, Type 2, Gray or A-A-3165 8010-00-251-6500 or equivalent Lubricant, Fluorocarbon 5624589, McLube 1720L 9150-01-325-9816 or equivalent Paper, Abrasive ALOXGRIT, Size 80 5350-00-543-3600 or equivalent

Liquid Dish Soap Local Purchase

Nomenclature and Reference Number Insulation Sleeving MIL-I-23053/5, Red 5970-00-983-7843 or equivalent Lacquer Bright White 8010-00-2575377 or equivalent Lacquer TT-L-32, Type 2, or A-A3165 Clear 8010-00-166-3164 or equivalent Lubricant Krytox 240 AZ Local Purchase

Metallic-foil MIL-P-19834 9905-00-044- Nitrogen BB-N-411, Type 1, Class 1, 5245 or equivalent Grade B 6830-00-169-0793 or equivalent Plastic Sheet 20 Gauge, approx. 0.01 Primer, Coating TT-P-1757, Type inch thick Local Purchase 2,Yellow 8010-00-297-0593 or equivalent Remover, Paint MIL-R-25134 8010Rope, Fibrous MIL-R-17343, Natural Rope, Fibrous MIL-R-24049, Type I, 00-815-2970 or equivalent 4020-00-928-3438 or equivalent Yellow 4020-00-968-1355 or equivalent Rubber Band ZZ-R-1415, or A-A-131, Rubber Band ZZ-R-1415, or A-A-131 Rubber Band ZZ-R-1415, or A-ANo. 16 7510-00-205-1439 or equivaNo. 32 7510-00-243-3434 or equiva131, No. 64 7510-00-243-3435 or lent lent equivalent Rubber Sheet Local Purchase Seal, Anti-pilferage MS51938 or F2738- Sealant M11179-4 Local Purchase A01-3-1-24 5340-01-469-7199 or equivalent Sealing Platicon, No. 169 Compound, Signal Gray (Powder Coating) PN 30Snap, Hook MS27756 (59B6223) Sealing, 8030-00-063-7176 7568 or equivalent 1670-00-020-4075 or equivalent Snap, Hook 1B Sliding Bolt, 18 eye, Snap, Hook 2C Spring Blade, Brass, Solder, QQ-S-571 3439 Class Bronze, 3.5 5340-00-286-2479 or 1.875, 18 eye 5340-00-286-2469 or equivalent equivalent Solution, Fusing Lexan Chips and Sponge Local Purchase Stirring Stick A-A-1081 7340-00-753Methylene Chloride Local Purchase 5565 or equivalent Strip, Coated Cloth MIL-C-19002, Strip, Coated Cloth MIL-C-23070, Var Talc Powder MIL-T-50036, Type T1, Type II, Class 1, Green 8315-00T, Orange 1-¼ inch 8315-01-206-1086 5 lb or A-A-59303A 6810-01-080078-2958 or equivalent or equivalent 9589 or equivalent Tape M11037, Red, Urethane Local Tape, Anti-seizing MIL-T-27730, Size I Tape, Duct A-A-2231, 2 inch 5640Purchase or II, or A-A-58092 8030-00-88900-103-2254, silver gray, or equiva3535 or equivalent lent Tape, Fiberglass Adhesive, 12 mils, 2 Tape, Pressure ASTM D5486/A5MTape, Pressure ASTM D5330/ inch Local Purchase D548EM PPP-T-60, Type IV, Class 1, D5330M A-A-1686, Type I (PPP-TOlive Drab, 2 inch 7510-00-266-5016 0097) Natural 1 inch 7510-00-290or A-A-1586 or equivalent 8036 or equivalent Tape, Pressure MIL-T-4053, 2 inch Tape, Pressure MIL-T-4053, 1 inch Tape, Pressure M11642-2S or wide, White 7510-00-515-0319 or wide, White 7510-00-530-6375 or M12088-5-2S, 2 inch 7510-01-447equivalent equivalent 2907 or equivalent Tape, Reflective L-S-300, Type I, Tape, Textile MIL-T-5661 8315-00-176- Tape, Textile MIL-T-5038, Type III, ½ Class 3, Silver/OP 2 inch 9390-008071 or equivalent inch 8315-00-255-7673 or equiva100-2200 ASTM D4956 or equivalent lent Tape, Textile MIL-T-5038, Type III, Tape, Textile MIL-T-5038, Type III, Thread, Cotton V-T-276, Type V, 8/4, Olive Drab or A-A-52094 8310-00class 1, 0.75 inch wide, Olive Drab Class 1, 0.75 inch, Sage Green 8315917-3940 or equivalent 8315-00-176-8083 or equivalent 00-616-0850 or equivalent

3-7

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 Table 3-2. Nomenclature and Reference Number Thread, Cotton V-T-276, Type V, 8/7, Olive Drab or A-A-52094 8310-00917-3942 or equivalent Thread, Nylon V-T-295, Type II, Class A, Size E, Olive Drab 8310-00-2440609 or equivalent Thread, Nylon V-T-295, Type I, Class A, Size 3, Olive Drab 8310-00-2622775 or equivalent Thread, Nylon V-T-295, Type I, Class A, Size E, Sage Green 8310-00-6160079 or equivalent Thread, Nylon V-T-295, Type II, Class A, Size FF, Olive Drab 8310-01175-7847 or equivalent Twine, Fibrous MIL-T-713, Type P, Class 2, Natural 4020-00-527-9089 or equivalent Webbing, Textile MIL-W-4088, Type VIII, Class 1, 1.718 inch, Olive Drab 8305-00-261-8585 or equivalent Webbing, Textile MIL-T-5038, Type IV, 1.5 inch, Olive Drab, 8305-00263-2472, or equivalent Wire, Electrical QQ-W-343, Type S, Size 24 6145-00-236-9503 or A-A59551 or equivalent

Consumable List - Continued

Nomenclature and Reference Number Thread, Nylon V-T-295, Type II, Class A, Size E, Green 8310-00-204-3884 or equivalent Thread, Nylon V-T-295, Type I, Class A, Size 6, White 8310-00-248-9716 or equivalent Thread, Nylon V-T-295, Type I, Class A, Size A, White 8310-00-262-3324 or equivalent Thread, Nylon V-T-295, Type II, Class A, Size FF, White 8310-01-174-9605 or equivalent Thread, Nylon V-T-295, Type I, Class A, Size FF, Olive Drab 8310-00-2271244 or equivalent Wax, Paraffin VV-W-95, Grade B 916000-285-2041 or equivalent

Nomenclature and Reference Number Thread, Nylon V-T-295, Type I, Class A, Size A, Olive Drab 8310-00244-0603 or equivalent Thread, Nylon V-T-295, Type I, Class A, Size E, White 8310-00-262-2770 or equivalent Thread, Nylon V-T-295, Type I, Class A, Size E, Olive Drab 8310-00281-2898 or equivalent Thread, Nylon V-T-295, Type II, Class A, Size 5 8310-01-174-9609 or equivalent Toluene, Technical TT-T-548, 1 gal or A-A-59107 6810-00-281-2002 or equivalent Webbing, Textile MIL-T-5038, Type IV, 1 inch, Olive Drab 8305-00261-8579 or equivalent Webbing, Textile MIL-W-4088, Type II, Webbing, Textile MIL-T-5038, Type 1 inch, Olive Drab 8305-00-263-3592 IV, 1 inch, Green 8305-00-655-5123 or equivalent or equivalent Webbing, Textile MIL-W-4088, Type VIII, Class 1, 1.718 inch, Olive Drab 8305-00-261-8585 or equivalent Woolite Local Purchase

3.7.5 Recharging Equipment. A typical setup for sections authorized to recharge carbon dioxide cylinders is shown in Figure 3-2.

3-8

Wire, Electrical QQ-W-343, Type S, Size 22 6145-00-128-8695 or A-A59551 or equivalent Zinc Rich Gray (Powder Coating) PN 13-7004 or equivalent

3.7.5.1 Adapter Assembly. Use Adapter Assembly, PN 9867-02, to recharge carbon dioxide cylinder when valve assembly, PN 9864-05 is installed. See Figure 3-3.

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 3-2.

Figure 3-3.

Carbon Dioxide Inflation Assembly Recharging Schematic (Typical)

Fill Adapter Assembly, PN 9867-02 (used on Valve PN 9864-05)

3-9

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 3.8

LOCALLY FABRICATED TOOLS.

3.8.1 General. To fabricate tools that are generally used to inspect and repair flotation equipment, see Figure 3-4. 3.8.2 Life Preservers. Fabricate special tools that are used to inspect and repair life preservers in accordance with the following paragraphs. 3.8.2.1 Life Preserver Test Fixture. Fabricate test fixture in accordance with Figure 3-5. 3.8.2.2

A-A-50652 Life Preserver.

3.8.2.2.1 A-A-50652 Life Preserver Deflation Adapter. Fabricate deflation adapter for the A-A-50652 life preserver in accordance with Figure 3-6. 3.8.2.2.2 Fabrication of Cell Protector. To provide cell protection against inflation valve chafing, fabricate cell protector as follows: NOTE Installation of a new cell protector is required only on life preservers where adequate protection is not already provided. a. Fabricate cell protector using original protector as a pattern, using cloth, laminated, MIL-C-43006, Type I, Class 3, 1/16 to 1/8 inch thick, yellow.

a. Use container as a pattern and cut two pieces of cloth, MIL-C-43006, Type III, Class 1, Form 1, yellow. b. Sew the two pieces together using nylon thread, V-T295, Type I, Class A, Size E, using stitch ASTM D6193 Type 301, 6 to 8 stitches per inch. Backstitch not less than 0.50 inch. c. Install button, MS27983-6; socket, MS27983-7; stud, MS27983-8 and eyelet, MS27983-9. d. Stencil markings centrally as shown on existing container with waterproof black ink. 3.8.2.3

LPU-3/P and 10/P Life Preserver.

3.8.2.3.1 LPU-3/P and 10/P Fabrication of Cell Protector. To provide the cell protection against inflation valve chafing, fabricate cell protector as follows: NOTE Cell protector shall be fabricated from condemned life preserver material or cloth, nylon, coated, MIL-C-43006, Type I, Class 3, Form 1, gray. a. Fabricate cell protector as shown in Figure 3-7. b. Cut out a 9/16 inch hole, 1-3/4 inches from end of cell protector, see Figure 3-7. c. Install cell protector over valve stem with long end up.

b. Using any desired closure method (hook and pile tape, snap fasteners, etc.), attach protector to life preserver assembly. 3.8.2.2.3 Fabrication of Storage Container. Fabricate storage container in accordance with the following paragraphs:

3-10

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 3-4.

Locally Fabricated Tools; Rewiring and Pull Cable Gauge

3-11

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 3-5.

3-12

Life Preserver Test Fixture (Typical)

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 3-6.

Deflation Adapter

Ensure buckle and clip are facing in the right direction, when manufacturing a new strap. To facilitate with routing of webbing, use and existing strap as a sample. b. Route one end of the nylon webbing material through the buckle as per existing strap, fold the free end over and approximate ½ inch twice and sew fold down with a box stitch, 7-11 stitches per inch and back stitch ½ inch, using nylon thread, V-T-295, Type 1 or 2, Class A, Size E, Olive Drab or equivalent.

Figure 3-7.

c. Route the opposite end of the nylon webbing material through the clip, so that there is 3 inches of excess material extending from the clip. Before stitching ensure clip is facing in the right direction. Fold free end of nylon webbing material down and sew nylon webbing material together with an approximate 1 ¼ inch Box “X”, 7-11 stitches per inch, nylon thread, using V-T-295, Type 1 or 2, Class A, Size E, Olive Drab or equivalent.

Fabrication of Cell Protector

3.8.2.3.2 LPU-10/P, Waist Strap Fabrication. Fabricate waist strap in accordance with the following steps and Figure 3-8. a. Cut an approximate five ft. length of 1 ½-inch wide nylon webbing, MIL-T-5038, Color: olive drab or equivalent, and sear the ends.

Figure 3-8.

d. Stencil, “Extended Waist Strap, LPU-10/P”, on strap using ½-inch letters, with ink A-A-208, Type I or III, black e. Install new strap onto LPU 10/P and properly adjust as required, refer to Chapter 2.

LPU-10/P Waist Strap

3-13

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 3.8.3 Multiplace Life Rafts. Fabricate special tools that are used to inspect and repair multiplace life rafts in accordance with the following paragraphs.

e. Stencil, “REMOVE BEFORE FOLDING RAFT”, on equalizer clamp streamer using ½-inch letters, with ink, A-A-208, Type I or III, black.

3.8.3.1 Multiplace Life Raft Test Fixture. Fabricate test fixture in accordance with Figure 3-9.

f. Stencil, “VENT CLOSED” on vent manifold streamer and, “TIE TO AIRCRAFT” on aircraft retention streamer using 1-inch letters with ink, A-A-208, Type I or III, black.

3.8.3.2

F-2B, 20-Man Life Raft.

3.8.3.2.1 F-2B Vent Manifold PN 9153 or C50980; Valve PN 9864-05; Aircraft Retention and Equalizer Clamp Streamers. To fabricate streamers, see Figure 3-10 and Figure 3-11, and proceed as follows: NOTE Use nylon thread, V-T-295, Type I, Class A, Size E. a. Cut and sew streamers using coated cloth, MIL-C22787, Type IV, red, as shown in Figure 3-10.

g. For Valve, PN 9864-05, fabricate streamer as follows: (1) Cut and sew streamers using coated cloth, MILC-22787, Type IV, red, as shown in Figure 3-10. (2) Sew the end of the strap with a rolled end 1 inch in width. (3) Cut rubber sheet and nylon webbing approximately 6 inches in length and 1 inch in width. Tack the rubber sheet and nylon webbing together.

b. Install grommet, PN MS20230-B20.

(4) Install post fastener, MS17981-5N (A-A-55621), on the top corner about ¼ inch below the edge.

c. Using a 10 to 12 inch length of nylon cord, MIL-C5040, Type III, red, PN 67A319D19 or 532B6244, tie equalizer clamp to equalizer clamp streamer.

(5) Fold rubber sheet and nylon webbing in half, with the nylon webbing inside and sew along the side.

d. Tie a 10 to 12 inch length of nylon cord, MIL-C-5040, Type III, red. If using Vent Manifold PN 9153, use pull-test adapter PN 9141. See Figure 3-11. If using Vent Manifold PN C-50980, use a screw with a 6-40 thread.

3-14

(6) Wrap folded rubber sheet and nylon webbing assembly tight/taut around the diameter of the upper valve body, encircling the vent holes (Figure 9-4, 50). Mark position with chalk.

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 3-9.

Multiplace Life Raft Test Fixture (Typical)

(7) Center and install cap fastener, AN227-12 or 12B, over the chalk mark.

3.8.3.2.3 F-2B Packing Frame for C-130 Aircraft. Fabricate packing frame in accordance with Figure 3-12.

(8) Attach rubber sheet and nylon webbing assembly by sewing a box- “X” on the end of streamer.

3.8.3.2.4 F-2B Life Raft Special Tools and Materials. Table 3-1 and Table 3-2 list special tools and materials required for component repair of 20-Man life rafts.

(9) Stencil “VENT CLOSED-VALVE PN 9864-05” using 1-inch letters with ink, A-A-208, Type I or III, black. 3.8.3.2.2 F-2B Pull-Test Adapter. If pull-test adapter PN 9141, is not available, fabricate in accordance with Figure 3-11.

3.8.3.3 MA-1/MA-2 Sea Rescue Kits. Fabricate special tools that are used to inspect and pack MA1/MA-2 sea rescue kits in accordance with the following paragraphs.

3-15

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 3.8.3.3.1 Inner Container Packing Frame. Fabricate inner container packing frame in accordance with Figure 3-13. 3.8.3.3.2 Rope Coiling Jig Fabricate a rope coiling jig in accordance with Figure 3-14. 3.8.3.4

25-Man Life Raft.

3.8.3.4.1 25-Man Life Raft Special Tools and Materials. Table 3-1 and Table 3-2 list special tools and materials required for component repair of 25-Man life rafts.

Figure 3-10.

Figure 3-11.

3-16

3.8.3.4.2 25-Man Life Raft Packing Bar. To facilitate the packing process, fabricate a packing bar (packing paddle) as follows: a. Using light-weight metal, wood, plastic or other suitable material cut a piece of material 14 inches long, 1 3/4-inches wide and 3/64-inch thick. b. Round off all corners. Remove all burrs and sharp edges to prevent damage to life raft.

Streamers, F-2B Life Raft (Typical)

Pull Test Adapter, F-2B Life Raft, PN 9141

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 3-12.

Packing Frame, C-130 Aircraft

Figure 3-14.

Figure 3-13.

Rope Coiling Jig MA-1 and MA-2

Inner Container Packing Frame MA-1 and MA-2

3-17/(3-18 blank)

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

CHAPTER 4 CONFIGURATIONS SECTION I GENERAL 4.1

SCOPE.

This chapter addresses features of life rafts and life preservers which must be included on applicable equipment. If features are missing, they must be incorporated in accordance with procedures specified herein.

4.1.1 Modifications. Life raft and life preserver assemblies are subject to modifications which significantly alter the form, fit, or function of some components or parts. This chapter identifies these modifications and provides procedures for incorporation when necessary.

SECTION II LIFE RAFT ASSEMBLIES 4.2

LRU-1/P LIFE RAFT ASSEMBLY. NOTE •

Newly procured LRU-1/P life raft assemblies will be configured with heaving line assemblies. Life raft assemblies minus pockets, mast holder, cover patch, and heaving line(s) are considered serviceable and should be used.

•

Life raft assemblies manufactured under contract No. DSA700-77-C8179, minus boarding line and ladder, are considered serviceable but shall be updated in accordance with Paragraph 4.2.5 and Paragraph 4.2.6.

made up of a two-compartment main tube; an inflatable seat attached to the main tube; a noninflatable floor attached to the bottom of the main tube and inflatable seat; and a sea anchor which is used to retard drifting. A lifeline, heaving line, rope ladder, supply pocket, and combination supply pocket and bailer are attached to the main tube. Boarding handles are attached to the main tube and the floor; righting handles are attached to the underside of the floor. Emergency survival equipment and life raft accessories, stowed in accessory containers, are provided for the safety and survival of the aircrew members. The lifeline also provides a means for securing the accessory containers to the life raft. Topping-off valves are located on the main tube and inflatable seat. See Figure 4-1.

4.2.1 Description. The LRU-1/P life raft assembly consists of an inflation assembly (carbon dioxide cylinder and inflation valve) and a seven-man life raft. The life raft is

4-1

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 4-1.

LRU-1/P Life Raft Assembly

4.2.2 Removal of Knife and Leather Holster from Life Raft Tube.

To provide rigid mounting of Strobe Light or distress marker light, install velcro pile tape as follows: a. Clean area where pile tape, MIL-F-21840 or A-A55126 is to be installed with toluene. See Figure 4-2.

When removing knife and holster, do not damage life raft tube.

NOTE •

For all machine stitching, use stitch ASTM D6193 Type 301, 7 to 11 stitches per inch, unless otherwise specified.

•

Fabricate 3 inch patch from condemned life raft material or equivalent.

To prevent possible knife breakage and damage to life raft, remove knife and leather holster. a. Remove life raft knife from holster and stow in accessory container. b. Using a knife or other sharp tool, cut stitching securing leather holster to patch on life raft tube. c. Obliterate the word “KNIFE” stenciled on life raft tube. 4.2.3 Raft.

Installation of Velcro Pile Tape on Bow of Life

Do not use toluene near open flame, heat, or electrical sparks. Avoid prolonged contact with skin or breathing of fumes. Use only in well-ventilated area.

4-2

b. Sew a 2 x 2 inch piece of pile tape to 3 inch circular patch using thread, V-T-295, Type I, Class A, Size E. c. Cement patch to buoyancy tube as shown in Figure 4-2 and Chapter 6. d. Stencil in ½-inch letters, “MOUNTING OF STROBE LIGHT”, on inside of tube so it can be read from inside the life raft. Use ink, A-A-208, Type I or III, black.

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 4-2.

Install Velcro Pile Tape on Bow of Life Raft

4.2.4 Fabrication and Installation of Inspection Data Pocket on Life Raft Container. To prevent loss of inspection record form, fabricate and install inspection data pocket as follows: a. Install grommet MS20230-B20 on fabric patch (4 x 5 inches of cloth from condemned life raft or equivalent). See Figure 4-3.

pocket may be sewn to either end of the container depending on the type of aircraft and position raft is stowed. If raft is stowed in an upright position with actuation handle at top, the pocket should be sewn to the actuation handle end of the container. If sewn on the end with the actuation handle, it will be sewn under the carrying strap to prevent any hindrance to the actuation handle. See Figure 4-3.

b. Stencil pocket with ¼-inch letters “INSP DATA” using ink, black, (A-A-208, Type I or III, black) or equivalent. See Figure 4-3. NOTE For all machine stitching, use stitch ASTM D6193, Type 301, 7 to 11 stitches per inch, unless otherwise specified. c. Using thread, nylon, V-T-295 Type I, Class A, Size E, stitch patch to end of container. The inspection data

4-3

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 4.2.6 Installation of Boarding Ladder. To install boarding ladder, proceed as follows: NOTE •

Boarding ladders previously installed on the aft section of life rafts may be relocated to the right bow section.

•

Rafts manufactured by RFD Patten, Inc. and California Inflatables (CICO Corp.) under Contract Numbers F41608-81-D-0016 and F4160883-D0219 were manufactured with the boarding ladders installed on the aft section of the raft instead of the right bow section. To comply with desired configuration, proceed as follows:

a. Route a 10 foot length of rope, fibrous, natural color, ¼ inch, MIL-R-17343 or equivalent, through two rope loops, ensuring that ends are of equal length. See Figure 4-4. b. Whip ends of line with twine, nylon, MIL-T-713, Type P, Class 2, or equivalent, waxed to prevent fraying, beginning approximately 1 inch from end of line, and continuing for 1½ inches. Figure 4-3.

Installation of Inspection Data Pocket (Typical)

4.2.5 Installation of Boarding Line. To install boarding line, proceed as follows: NOTE Life rafts manufactured prior to 1971 do not have boarding lines installed. a. Using a 12 to 14 foot length of line, nylon, ¼ inch, MIL-R-17343 or equivalent, tie eight overhand knots starting approximately 1 foot from the end and continuing about 1 foot apart. Finished length should be 10 ±1 foot. See Figure 4-1. b. Tie loose ends of boarding line to life raft with bowline knots as shown in Figure 4-1.

When searing ends, avoid forming sharp edges. c. Sear all cut ends to prevent fraying.

4-4

c. Cut off the 1 inch on both ends. d. Serve the two ends of line together using cord, nylon, MIL-C-5040, Type III or equivalent, for 10 inches. See Figure 4-4. e. Stitch across served portion to secure serving place, using one turn of thread, nylon, V-T-295, Type I, Class A, Size 6 or equivalent, doubled and waxed. Tie off ends. See Figure 4-4. f. Serve ladder to lifeline using twine, fibrous, MIL-T713, Type P, Class 2 or equivalent, waxed, as shown in Figure 4-4. g. Stencil applicable markings on life raft. Refer to tables in Chapter 5.

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 4-4.

Installation of Boarding Ladder

4-5

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 4.3

F-2B LIFE RAFT ASSEMBLY.

4.3.1

Description. NOTE

The 20-Man VPLR can be converted to an F-2B configuration by performing a functional and initial acceptance inspection in accordance with Chapter 5. Ensure the appropriate forms are annotated and the life raft is re-identified with the appropriate information/markings as an F-2B 20Man life raft. 20-Man VPLR is obsolete and must be replaced with an F-2B or converted to an F-2B before the end of the 20-Man VPLR 10 years service life. The F-2B life raft assembly consists of an inflation assembly (carbon dioxide cylinder, inflation valve, and cover) and a 20-Man life raft. The life raft is made up of two singlecompartment circular tubes connected by an equalizer tube; a noninflatable floor suspended between the circular tubes; and a boarding ramp permanently attached to each circular tube. The floor is equipped with a built-in inflatable floor support; inflatable boarding ramps are located on opposite

4-6

sides of the life raft. A sea anchor, used to retard drifting, is stowed in the sea anchor pocket and is located at the junction of the circular tubes. An inner lifeline, boarding handles, survivor holding handles (some earlier production life rafts are equipped with a combination of handle and outer lifeline), a heaving line, a reversible canopy and emergency survival equipment, stowed in accessory containers, are provided for the safety and survival of the aircrew members. The inner lifeline, attached to the floor, and the boarding handles, attached to the circular tubes and boarding ramps, also provide a means for securing the accessory container to the life raft. The reversible canopy, bright red on one side and blue on the other side, is equipped with an access flap located at each boarding ramp. Canopy rod supports and topping-off valves are located on each side of the floor support. See Figure 4-5. 4.3.2 Removal of Knife and Leather Holster from F-2B Life Raft Tube. If installed, remove knife and leather holster from life raft tube in accordance with Paragraph 4.2.2. 4.3.3 Installation of Velcro Pile Tape on Life Raft Tube. To provide rigid mounting of strobe light/distress marker light, install velcro pile tape as follows:

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 4-5.

F-2B Life Raft Assembly

4-7

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 4-6.

4-8

Installation of Velcro Pile Tape on Life Raft Tube

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 4.3.5 Installation of Canopy Access Hole. To install canopy access hole, proceed as follows: Toluene is flammable and may affect eyes, skin, and respiratory tract. Use in a well-ventilated area. Avoid prolonged breathing of vapors. Avoid eye and repeated skin contact. Keep away from sparks and flames. NOTE Velcro pile tape will be installed on both sides of life raft. Materials and instructions given are for installation on one side only. a. Clean area where tape, pile, MIL-F-21840, 2 inches wide or equivalent, is to be installed with toluene, or equivalent. See Figure 4-6. NOTE For all machine stitching, use stitch ASTM D6193, Type 301, 7 to 11 stitches per inch, unless otherwise specified. b. Sew a 2 x 2 inch piece of tape, pile, MIL-F-21840, 2 inches wide, or equivalent, to 3 inch circular patch of cloth from condemned life raft or equivalent, using thread, nylon, V-T-295, Type I, Class A, Size E or equivalent. c. Using adhesive, cement patch to buoyancy tube as shown in Figure 4-6. Prepare and attach outside patch in accordance with Chapter 6. d. Using ink, A-A-208, Type 1 or III, black, stencil in ½-inch letters, “MOUNTING OF STROBE LIGHT”, on inside of tube so it can be read from inside of life raft. 4.3.4 Fabrication and Installation of Inspection Data Pocket on Life Raft Container. To prevent loss of inspection record form, fabricate and install inspection data pocket in accordance with Paragraph 4.2.4.

NOTE For all machine stitching, use stitch ASTM D6193, Type 301, 7 to 11 stitches per inch, unless otherwise specified. a. Cut a 5 x 5 inch hole in life raft canopy 5 +¼, -0 inches from center mast holder. See Figure 4-7, detail A. b. Cut tape, pile, 1 inch wide, MIL-F-21840 or equivalent, into two 7 inch lengths and two 5 inch lengths. Stitch pile tape around parameter of cutout on blue side of canopy. c. Using cloth from condemned canopy 8 ½- by 7-inches, fabricate flap. Cut tape, hook fastener, 1 inch wide, MIL-F-21840 or equivalent, into two 7-inch lengths and two 5 inch lengths and stitch to flap as shown in Figure 4-7, detail B, using thread, nylon, V-T-295, Type I, Class A, size E or equivalent. d. Attach flap to canopy with two rows of stitching as shown in Figure 4-7, detail C, ensuring hook and pile tapes mate. 4.3.6 Removal of Inlet Valve Check Element. To remove inlet valve check element, proceed as follows: a. Ensure life raft is deflated. b. Disconnect vent Y-manifold from life raft. c. To remove check element from inlet valves, form a small hook with a paper clip or small needle nose pliers. Hook one of the trispoke legs and pull upward, thus removing check element and spring. See Figure 4-8.

4-9

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 NOTE When reinstalling manifold PN 9153 ensure that nylon gaskets are properly positioned; the two nylon gaskets with larger inside diameters are to be placed toward life raft. When reinstalling manifold PN C-50980, ensure copper seals PN A-50969 are present and properly positioned around the set screws on the outlets. Do not use nylon gaskets on the outlets with manifold PN C-50980. When reinstalling valve assembly PN 9864-05, ensure that nylon gaskets are properly positioned, leak test in accordance with Chapter 5 and stencil with steps h and i; if plastic gasket does not sit securely on cylinder valve outlet ports after cylinder is installed, life raft may appear to leak around inlet valve. If inlet valve appears to be leaking, disconnect and reposition plastic gasket and repeat leakage test. Accomplish this step prior to removing life raft for inlet valve repair. May cause damage or destruction of equipment if not installed properly.

Figure 4-7.

4-10

Change 2

Ensure inlet valves, swivel nuts, and vent Y-manifolds are free of dirt and foreign matter. d. Reinstall manifold to life raft. Torque to 140 to 150 inlb. e. Close vent. Partially inflate life raft with air. f. Open manifold and ensure that air escapes. Close vent. Vent manifold shall remain closed until life raft is installed. g. Deflate life raft though topping-off valve. h. Upon completion of removal of inlet valve, check element raft shall be stenciled or stamped “ INLET CHECK ELEMENTS HAVE BEEN REMOVED” directly above the manifold on upper tube.

Installation of Canopy Access Hole

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 4-8.

Inlet Valve Check Element

A-A-50652038A

Figure 4-8A.

Mirada Style Inlet Valve Check Element

Change 2

4-11

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 4-9.

4-12

Change 2

F-2B CO2 Sling Pocket Retainer Straps

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 4-10.

Extending Cylinder Cover, PN 63A80H8-1

Change 2

4-13

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 i. The size of the lettering shall not be less than ¼ inch in height. Use ink, A-A-208, Type I or III, black. j. When inlet check element has been removed, leak test in accordance with Chapter 5. 4.3.6.1 Removal and Reinstallation of Mirada Style Inlet Valve Check Element/Poppet Retainer. a. For the Mirada style inlet valve use a ¼ inch Hex Wrench, turning counter clockwise to remove poppet retainer from flange. See Figure 4-8A. b. Remove poppet and spring. c. Use a ¼ inch Hex Wrench, turning clockwise to reinstall poppet retainer into flange. If properly seated, the components will thread together smoothly with no binding. See Figure 4-8A. d. Torque retainer to 50 inlb.

When reinstalling manifold PN 9153 ensure that nylon gaskets are properly positioned; the two nylon gaskets with larger inside diameters are to be placed toward life raft. When reinstalling manifold PN C-50980, ensure copper seals PN A-50969 are present and properly positioned around the set screws on the outlets. Do not use nylon gaskets on the outlets with manifold PN C-50980. When reinstalling valve assembly PN 9864-05, ensure that nylon gaskets are properly positioned, leak test in accordance with Chapter 5. Stencil as per 4.3.6.1 steps i through k. If plastic gasket does not sit securely on cylinder valve outlet ports after cylinder is installed, life raft may appear to leak around inlet valve. If inlet valve appears to be leaking, disconnect and reposition plastic gasket and repeat leakage test. Accomplish this step prior to removing life raft for inlet valve repair. May cause damage or destruction of equipment if not installed properly. NOTE Ensure inlet valves, swivel nuts, and vent Y-manifolds are free of dirt and foreign matter. e. Reinstall manifold to life raft. Torque to 140 to 150 inlb. f. Close vent. Partially inflate life raft with air. g. Open manifold and ensure that air escapes. Close vent. Vent manifold shall remain closed until life raft is installed.

4-14

Change 2

h. Deflate life raft through topping-off valve. i. Upon completion of removal of inlet valve check element raft shall be stenciled or stamped “INLET CHECK ELEMENTS HAVE BEEN REMOVED” directly above the manifold on upper tube. j. The size of the lettering shall not be less than ¼ inch in height. Use ink, A-A-208, Type I or III, black. k. When inlet check element has been removed, leak test in accordance with Chapter 5. 4.3.7 F-2B Lengthening of Carbon Dioxide Cylinder Sling Retainer Strap. a. Measure the retainer straps on the cylinder sling pocket. If the total length of the retainer straps including the two 3/4 inch box stitches at each end is less than 113/8 inches ±1/8, the retainer straps should be extended to incorporate the Air-Lock Valve, PN 9864-05. b. If the retainer straps’ total length is shorter than 11-3/8 inches, undo the two box stitches that are farthest from the buoyancy tube on the cylinder pocket, as shown in Figure 4-9. Then undo the box stitch that connects the two retainer straps at the center of both straps. NOTE Do not undo the box stitches that are next to the buoyancy tube as shown in Figure 4-9. c. Cut and sear ends of retainer straps and sew a piece of webbing, MIL-T-5038, Type IV, 1 inch wide, so that the total length of retainer strap from both ends of the box stitches is 11-3/8 inches ±1/8. Sew the end of the extension webbing in the same box stitch position as the original webbing. Do the same to extend the other retainer strap. Extreme caution should be exercised not to sew the pocket closed. 4.3.8 Extending the Carbon Dioxide Cylinder Cover PN 63A80H8-1 to Accommodate the Air-Lock Valve. a. Turn cylinder cover inside out. NOTE All cylinder covers may not be the same length. b. Add a piece of material to make total length of container from bottom of cover to the bottom of the vertical slot 28-¼ ±¼ inches. (You may use scrap cover material, life raft floor material or MIL-C-21109 Type II color orange). See Figure 4-10.

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 c. Sew the material with two rows of machine stitching, ASTM D6193, Type 301, 6 to 10 stitches per inch. Use thread, nylon, V-T-295, Type II, Class A, Size E, Olive Drab or equivalent. Trim material after sewing. d. Backstitch all exposed ends of stitching a minimum ½ inch. Thread breaks shall be stitched a minimum of 1 inch. 4.4

TWENTY-FIVE-MAN LIFE RAFT ASSEMBLY.

4.4.1 Description. The twenty-five-man troop/crew life raft and survival kit are packaged in a rigid plastic case/ container and stowed in applicable areas of the aircraft. Each case/container is made of two halves secured together by harness straps. The life raft is made of two single-compartment flotation tubes. Each flotation tube has its own system consisting of a compressed air cylinder (reservoir), valve assembly, and jet pump. When inflated, the life raft takes a decagon (ten-sided) shape and measures 13.5 feet across any

Figure 4-11.

two parallel sides. One side of the life raft has a boarding ladder to facilitate boarding of the life raft. A noninflatable floor is suspended between the two flotation tubes; the floor is equipped with a built-in inflatable floor support. Attached to the outboard lifeline is a sea anchor to retard drifting and a survival kit containing emergency survival equipment for the safety and survival of personnel. A heaving ring with a line is also attached to each flotation tube. Stored in the center bulk of the floor are canopy, canopy rods, hand pump with adapter, and a 30-foot coil of Type I nylon cord. Topping-off valves are located on each side of the flotation tubes and floor support. See Figure 4-11. 4.4.2 Fabrication of Morse Code Placard. Fabricate Morse code placard in accordance with Figure 4-12. 4.4.3 Fabrication of Hand Pump Instruction Placard. Fabricate hand pump instruction placard in accordance with Figure 4-13.

Twenty-Five-Man Life Raft Assembly

Change 2

4-14.1

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 4-12.

4-14.2

Change 2

Fabrication of Morse Code Placard

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 4-13.

Fabrication of Hand Pump Instruction Placard

SECTION III SEA RESCUE KITS 4.5

MA-1 AND MA-2 SEA RESCUE KITS.

4.5.1 Description. The MA-1 and MA-2 sea rescue kits consist of five cylindrical-shaped containers numbered one through five in consecutive order. The containers are interconnected by four buoyant polyethylene ropes 210 feet long. MA-1 kit containers one and five each contain a seven-man (LRU-1/P) life raft; MA-2 kit containers one and five each contain a 20-Man life raft. The two life raft containers of both kits are identical with one exception: number five container is not equipped with a polyethylene rope. All life raft containers are equipped with a 15 to 50 foot static line (length dependent on delivery type aircraft) for the purpose of inflating life rafts when containers leave aircraft. Containers numbered two, three, and four are waterproof supply containers composed of an inner container packed with survival items and a sleeve-type outer container closed by a tie cord at each end. Refer to Table 7-5 for required components that are packed in applicable containers. Attached to the outer container is a harness assembly, with a pocket at one end for stowing a sea anchor and a 210 foot length of polyethylene rope. A belt and buckle arrangement along the open length and loops for a cord tie on the closing end of the harness assembly permit adjustment and closing around the container. Each harness assembly is equipped with three V-rings for interconnecting the containers and for “bombing up” of the kit. The supply containers are capable of remaining watertight for 6 hours.

NOTE F-2B life rafts, when used on MA-2 sea rescue kits, require two sea anchors. a. Remove installed sea anchor.

Do not remove sea anchor pocket. b. Tie free end of sea anchor lanyard to survivor hold handle nearest either side of carbon dioxide cylinder with a bowline knot. See Figure 4-14. c. Tie free end of second sea anchor lanyard to survivor hold handle nearest carbon dioxide cylinder opposite first sea anchor. See Figure 4-14. 4.5.3 Fabrication and Installation of Inspection Data Pocket on Containers. To prevent loss of inspection record form, fabricate inspection data pocket in accordance with Paragraph 4.2.4. Installation on side of container will be as determined by using activity.

4.5.2 Installation of Sea Anchors on F-2B Life Raft Assembly. To install sea anchors on F-2B life raft assembly, proceed as follows: 4-15

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 4-14. 4.5.4 ers.

Installation of Sea Anchors

Rework MA-1 and MA-2 Outer Supply ContainNOTE

Outer containers PN 54C6405, NSN 4220-00-6931467LS, manufactured under Contract No. F41608-83-C-1180 will be reworked for proper length as follows:

b. Remove the closing cord loop from the piece cut from the container. Reattach the closing cord loop 4-3/4 inches from the open container end on the same hem that it was originally installed. Attach by stitching through double throw zig-zag stitching, 2 places. Use 8-12 stitches per inch counted along one side row of stitching. The closing cord loop shall be stitched for 2 inches; thus, the cord stitching will start approximately 2-3/4 inches from the open end. This will put the cord loop 4-3/4 inches from the end.

a. Cut enough material from the open end so that the total length is 43½ inches. Fold back ½ inch from the open end and hem 3/8 of an inch from the open end with thread, nylon, V-T-295, Type I or II, Class A, Size E, white. Sew 7 to 12 stitches per inch. Ends of all straight stitching shall be back stitched no less than ½ inch.

SECTION IV LIFE PRESERVER ASSEMBLIES 4.6

LPU-6/P INFANT’S FLOATING SURVIVAL COT.

4.6.1 Description. The LPU-6/P infant’s floating survival cot consists of an inflatable buoyancy tube (miniature life raft), a self-erecting hood, and a canopy. The canopy is provided with a flexible transparent window to allow constant observation of the infant after the canopy is closed. Two shrouded apertures near the top of the hood provide for ventilation, yet guard against the entry of water. A water-activated battery and lamp are provided with each cot. The lamp is located at the top of the hood, and the battery is located below the waterline on the outside of the cot. The cot is inflated with carbon dioxide by a mechanical inflation system consisting of an inflator and two MIL-C-601, Type III, 16-gram carbon dioxide cylinders. An oral inflation valve and tube are provided for maintaining pressure in the cot

4-16

after initial inflation. The floor of the cot is lined with sponge rubber to protect the infant against cold waters. To improve the cot’s stability in rough water, the floor is designed so that the center of gravity of the infant’s body is below the surface of the water. Two lengths of soft fabric extend from each side of the floor and are tied across the infant’s chest and to secure it inside the cot. The infant is secured so it will not shift and upset the cot or the balance of the buoyancy tube. In the event of a ditching, the cot can be secured to the aircraft seat or can be held on the lap of an attendant. The cot is provided with webbing straps attached in four places. The straps may be used to hand carry the cot or lower it from an aircraft by means of an attached lanyard. After water entry, this lanyard is used in securing the cot to an adult life preserver or life raft. See Figure 4-15.

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 4-15.

LPU-6/P Infant’s Floating Survival Cot (Typical)

4.7 A-A-50652 (COMMERCIAL) LIFE PRESERVER ASSEMBLY. NOTE The A-A-50652 Adult/Child (Commercial) Life Preserver replaces the LPU-1P. LPU-5/P, MB-1 and MD-1 Life Preservers.

MIL-C-601, Type III. The flotation cells are mounted one above the other, with each incorporating an oral inflation tube. The A-A-50652 (commercial) life preserver assembly is a reversible vest type, designed to encircle the neck of adults and children who are over 18 months old. See Figure 4-16.

4.7.1 Description. The A-A-50652 (commercial) life preserver assembly incorporates the use of two single inflators, each containing a single 16-gram carbon dioxide cylinder

4-17

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 4-16.

A-A-50652 (Commercial) Life Preserver, Adult/Child (Typical)

4.8 LPU-3/P, AND LPU-10/P LIFE PRESERVER ASSEMBLIES.

vated, the clip is pulled from the spring-loaded oral valve allowing it to close. This preserver has no provisions for the installation of accessories or survival equipment.

NOTE LPU-2/P shall be modified and reidentified as an LPU-10/P Life Preserver Assembly (information below is for reference). 4.8.1 Description. The LPU-2/P, 3/P, and 10/P are underarm life preservers and are primary survival equipment items. The major differences among the assemblies are as follows: 4.8.1.1 The LPU-2/P life preserver consists of two neoprene-coated fabric flotation cells, each packed into a flat envelope-type container. The containers are attached to an adjustable harness which secures the preserver to the body. Each cell is mechanically inflated by a 28 gram carbon dioxide cylinder. In case of failure of the mechanical system, an oral inflation system for inflating the preserver is provided on each cell. A metal clip is attached to the lanyard of the mechanical inflation system to hold the valve of the oral inflation system open when the preserver is packaged for service use. The open oral inflation valve permits any air trapped in the cell to be vented. When the system is acti-

4-18

4.8.1.2 The LPU-10/P life preserver consists of two neoprene-coated fabric flotation cells, each packed into a flat envelope-type container. The LPU-10/P and the LPU-2/P are similar in appearance; both use the same harness and cell containers, however; a different inflator is used on the LPU10/P cell, which incorporates a self-venting capability that eliminates the need for a breather clip. The inflator used is the same as the one used on the LPU-3/P assembly. The inflator FLU1/P/FLU-1A/P lever used on the LPU-3/P and 10/P locks in the up position while the inflator (MA-1) of the LPU-2/P can be moved up or down after inflation. The MA-1 and FLU-1/P inflators are not interchangeable among LPU2/P, 3/P, and 10/P cells due to the length of the valve stems. The valve stems on the LPU-3/P and 10/P preserver assemblies are shorter than the 2/P and do not have valve cores. The removal of the valve core allows venting of the cell until the inflation is actuated. The oral tube valve pocket is also alienated from the cell container on this assembly. This preserver has no provision for the installation of accessories or survival equipment. See Figure 4-17.

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 4.8.1.3 The LPU-3/P life preserver consists of two neoprene-coated fabric flotation cells, each packed into a flat envelope-type container. The containers are similar to the ones used on the LPU-2/P and 10/P but, in lieu of a harness, they are attached directly to the parachute harness by means of slide fasteners. Each cell is mechanically inflated by a 28-31 gram carbon dioxide cylinder. In case of failure of the mechanical system, an oral inflation system for inflating the

Figure 4-17.

preserver is provided on each cell. This assembly incorporates the use of the FLU-1/P/FLU-1A/P inflator with venting capabilities. When packed, any air trapped in the cell will vent through this valve. Upon actuation of the mechanical inflation system, the vent is closed; allowing the cells to fill with air and maintain buoyancy. This preserver has no provisions for the installation of accessories or survival equipment. See Figure 4-18.

LPU-2/P and 10/P Life Preserver Assemblies

Figure 4-18.

LPU-3/P Life Preserver Assembly

4-19

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 4.8.2 LPU-3/P Installation of Slider Keeper Tab. To prevent slider creepage during use, install slider keeper tab as follows: NOTE Use of keeper will require installation of stud, AN227-13B and post, AN227-14B in harness vest material. Do not install in webbing. Using a 1inch punch, cut circular pieces of material out of cloth, nylon, laminated, MIL-C-43006, Type I, Class 3, Form 1, green. Position circular material on back side of harness and install post and stud to mate with cap and socket on slide keeper. a. Route tape, nylon MIL-T-5038, Type III, ½-inch wide, color optional, or equivalent, through stirrup on slide fastener. Figure 4-19.

Installation of Slider Keeper Tab

b. Install cap, snap fastener, AN227-11B or equivalent, and socket, snap fastener, AN227-12B or equivalent, ¼ inch from end of tape as shown in Figure 4-19. 4.8.3 LPU-3/P Installation of Slide Fasteners to Back Style, Seat Style, and Integrated Torso Parachute Harnesses. To install LPU-3/P life preserver on back style, seat style, and integrated torso parachute harnesses, proceed as follows: NOTE •

For all machine stitching, use stitch ASTM D6193, Type 301, 7 to 11 stitches per inch, unless otherwise specified.

•

On harness assemblies where the rear slide fastener is presently installed and properly positioned to fit aircrew member, the fastener may be left in place, however; if repositioning is necessary, care must be exercised to ensure parachute harness is not damaged during removal of the fastener tape. Future installation of rear slide fastener tapes shall be similar to Figure 4-20 but in a manner which prevents stitching over the diagonal back strap.

4.8.3.1 Back Style Parachute Harness. To install slide fasteners on back style parachute harness, proceed as follows: NOTE Harnesses not previously equipped with reinforcement panels shall be reworked as outlined in applicable parachute manuals. Reinforcement panels installed by the manufacturer are considered adequate and need not be replaced unless fraying is evident. a. Unpack parachute assembly before starting installation of slide fastener. 4-20

Figure 4-20. Attachment of Rear Slide Fasteners to Back Style, Seat Style, and Torso Harnesses NOTE Do not position the rear slide fastener tape above the reinforcement panel. b. Temporarily hand tack front slide fastener tape to that part of vest-backing binding tape which is parallel to the front riser. See Figure 4-21. c. After aircrew member dons harness, attach life preserver to front fastener. Determine most comfortable position for wearer; then, mark location of rear fastener to the vest-backing binding tape. See Figure 4-20 and Figure 4-21.

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 d. After aircrew member doffs harness, remove temporary hand tackings.

•

NOTE •

Hand sew fastener tapes with a double row of running stitches using thread, cotton, V-T-276, 8/7, or A-A-52094, olive drab, or equivalent, single. Tie ends with a surgeons knot and locking square knot.

When machine stitching is difficult, hand sewing is acceptable.

Figure 4-21.

Front View of Back Style and Integrated Torso Harness

e. Position fastener tapes on front and rear marked areas. Sew fastener tapes with a double row of stitching using thread, nylon V-T-295, Type II, Class A, Size FF, olive drab or equivalent. Secure ends of tape by back stitching ½ inch or with a box- “X” stitch pattern.

Once installed, adjustments are accomplished by tightening or loosening the lacing strings. Ensure inflation lanyards are located at bottom front. When the mission is such that a preserver is not required, it can be detached from the harness.

NOTE If the ripcord grip pocket interferes with installation of the left front slide fastener, the pocket may be removed, then replaced after the front slide fastener tape has been installed. f. Cut a length of tape, nylon, MIL-T-5038, Type III or equivalent, the length of the slide fasteners to be used as a protective flap. Machine stitch with a single row of thread, nylon, V-T-295, Type II, Class A, Size FF, olive drab over the extent of both front and rear slide fasteners. See Figure 4-21. NOTE •

Refer to TO 14D3-11-1 for mounting of CRU60/P.

•

After the LPU-3/P has been fastened in place, its longitudinal axis should be on a horizontal plane when the parachute is worn. Take-up adjustment is located on the rear slide fastener.

•

When containers/fasteners need replacing, it may be necessary to replace both halves of fasteners for proper mating. If slide keeper tabs need replacing, fabricate in accordance with Paragraph 4.8.2 of this section.

•

Installation of slide fasteners on automatic back style parachutes will be similar to seat style parachute installation.

4.8.3.2 Seat Style Parachute Harness. To install slide fasteners on seat style parachute harness, proceed as follows: NOTE Installation of LPU-3/P to the seat style parachute harness is similar to the back style harness; however, the following additional steps may be necessary and parachute does not have to be unpacked. 4.8.3.2.1 If required, cut tackings on arming cable knob

4-21

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 sockets, snap fasteners, MS279832-N, as shown in view A. Stitch across 1/8 inch from ends and sear. The existing studs and posts referenced in Paragraph 4.8.2 may be removed. Install stud, snap fastener, MS27983-3 and eyelet/post, MS27983-4 located on the harness vest material. The studs receive the “pull-thedot” buttons on the two slider keeper tabs, front and back, of the LPU-3/P Life Preservers.

guide and arming cable housing prior to installing front fastener tape. See Figure 4-22. 4.8.3.3 Integrated Torso Harness. To install slide fasteners on integrated torso harness, proceed as follows: NOTE Installation of slide fasteners to the integrated torso harness is similar to back style parachute harness; however, step a and note after step e of Paragraph 4.8.3.1 do not apply.

d. Cut and install 1.50 inch wide webbing, nylon, MILT-5038, Type IV, color sage green or equivalent, on the LPU container as shown in Figure 4-23, sheet 1. Sear ends of strips and sew on the containers using thread, nylon, V-T-295, Type I, Class A, Size E, color optional, or equivalent. Install studs and eyelets through the containers as shown in Figure 4-23 Sheet 1. e. Cut length of 1.50 inch wide webbing, nylon, MIL-T5038, Type IV, color sage green or equivalent, and install snap cap, MS27983-1 or equivalent, sockets, snap fasteners, MS27983-2N or equivalent, and sear end per Figure 4-23, Sheet 2. Sew webbing over the ends of both front slide fasteners on the parachute/torso harness with a double row of stitching, 7-9 stitches per inch. Use thread, nylon, V-T-295, Type II, Class A, Size FF, or equivalent. Secure end of retainer by back stitching or with box- “X” stitch pattern. NOTE

Figure 4-22.

Attachment to Seat Style Parachute Harness

4.8.3.4 Reinforcement of LPU-3/P Life Preserver Attachment to the Back Style Integrated Pack and Harness, Torso Harness and the Seat Style Harness. a. Remove the CRU-60/P mounting bracket and existing tackings. b. Remove both LPU-3/Ps from the parachute harness and unpack preserver before starting reinforcement. c. Remove the present slider keeper tabs from both LPU’s and install new slider keeper tabs shown in Figure 4-19. Cut webbing (retainer/strip (-05)(-03)), textile, reinforcing, nylon, MIL-T-5038, Type IV, Class 1, 1.50 wide, color sage green or equivalent, approximately 6.50 inches in length, install through slider and fold in half see Figure 4-23. Install snap, cap, MS279831, and

4-22

•

On harness assemblies where the front fasteners are presently installed and properly positioned, the fasteners may be left in place. Remove the protective flaps and sew retainer webbing using above instructions.

•

Retainer webbing may be sewn first, then sockets installed. Ensure the sockets on the retainer match up with studs/eyelets on the container straps when the LPU’s/harnesses are fastened.

•

On harness not previously equipped with slide fasteners, a single row of stitching may be sewn to the fastener and a double row of stitching may be sewn on the retainer using thread, V-T295, Type II, Class A, Size FF, olive drab nylon, or equivalent and securing ends.

f. Reinstall CRU-60/P mounting bracket and sew appropriate tackings. 4.8.3.5 Inspection of LPU-3/P Container/Fastener Lacing Tape. If lacing tapes do not have a row of stitching sewn along length of lacing tape and through the base of each loop and/or bartacking on each loop, bartack each loop ¼ inch to prevent lacing cord slippage. Sew through the base

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 of each loop with thread, nylon, V-T-295, Type I, Class A, Size E or equivalent. Make sure the bartack stitch goes through the outer edge of the lacing tape loops (See Figure 4-23, Sheet 1). NOTE An alternate method to bartacking is darning or sewing a straight row of stitching along each length of lacing tape through the base of each loop and ensuring that each base of each loop is sewn.

a. Remove actuation lanyard from under sleeve. NOTE An alternate method is to secure actuation lanyard by safety tying knob with one turn of thread, nylon, V-T-295, Type I, Class A, Size A or equivalent, to container. See Figure 4-24. b. Stitch through folded down sleeve using thread, nylon, V-T-295, Type I, Class A, Size E, or equivalent, to first corner of sleeve. See Figure 4-24.

4.8.4 (LPU-3/P and 10/P) Stitching Lanyard Sleeve. To prevent premature inflation by actuation lanyard hanging up on an immovable object, stitch lanyard sleeve as follows:

4-23

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 4-23.

4-24

Reinforcement LPU-3/P Life Preserver (Sheet 1 of 2)

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 4-23.

Reinforcement LPU-3/P Life Preserver (Sheet 2)

4-25

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 a. Cut two 4 inch diameter patches using cloth, MIL-C19002 Type I, orange or equivalent, or fabric from condemned cell. NOTE

Figure 4-24.

Stitching Lanyard Sleeve

4.8.5 LPU-3/P and 10/P Installation of Snap Fastener on Case Front Flap. To install snap fastener on case front flap, proceed as follows: a. Remove actuation lanyard from under sleeve. b. Install small glove-type snap fastener, such as AN22749B, -50B, -51B and -52B (A-A-55621), to lower corners of front flap and lanyard sleeve. See Figure 4-25.

•

Newly-manufactured cells have 1½-inch hook and pile tape cemented directly to cells. A pull test shall be performed on these cells in accordance with Chapter 5.

•

For all machine stitching, use stitch ASTM D6193, Type 301, 7 to 11 stitches per inch, unless otherwise specified. Use thread, nylon, V-T-295, Type I, Class A, Size E.

b. Stitch fastener tape, hook, MIL-F-21840 (A-A-55216), 2 inches wide, or equivalent, and fastener tape, pile, MIL-F-21840 (A-A-55216), 2 inches wide or equivalent, to 4 inch patches, using box- “X” stitch pattern. See Figure 4-26. NOTE The fastener tape on new preservers does not have a separate pull tab attached, however; approximately 3 inches of the pile was removed to form a pull tab which serves the same purpose. c. Cut a patch 2- by 3½-inches using cloth, MIL-C19002, Type I, orange, or fabric from condemned cell, and stitch to the pile side of pile tape using box- “X” stitch pattern. See Figure 4-26. NOTE Cementing procedures will be performed in accordance with Chapter 6. d. Cement cell connectors to cells using adhesive, MILA-5540, Class 3, Form B or equivalent, in accordance with Figure 4-27.

Figure 4-25.

Installation of Snap Fastener

4.8.6 LPU-3/P and 10/P Fabrication of Hook and Pile Tape Cell Connectors. To facilitate connection of cells after inflation, fabricate cell connectors as follows:

4-26

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 4-26.

Figure 4-27.

Fabrication of Cell Connectors

Cell Connector Installation

4.8.7 LPU-3/P and 10/P Hook Tape Protector. To prevent hook tape from chafing cells, fabricate tape protector as follows:

a. Fabricate a hook tape protector 2½ -inches wide and 7-inches long from cotton, nylon, or rayon cloth.

4-27

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 b. Stitch a 2½- by½-inch piece of fastener tape, pile, MIL-F-21840 (A-A-52094) or equivalent, to end of hook tape protector using thread, nylon, V-T-295, Type I, Class A, Size E, or equivalent. See Figure 4-28.

4.8.8 LPU-3/P and 10/P Fabrication of Protective Flap to Container. To keep life preserver material from protruding at the opening created at junction of bottom and front flaps, fabricate protective flap as follows: a. Fabricate a 1 x 3 ±¼ inch protective flap from cotton, nylon, or rayon cloth as shown in Figure 4-29.

Figure 4-28.

Hook Tape Protector

c. Attach hook tape protector to cell connector as shown in Figure 4-28. NOTE An alternate method of attaching hook tape protector to cell connector is to hand tank with one turn of thread, cotton ticket, 8/4, V-T-276 (A-A52094), Type V, doubled, two places. See Figure 4-28.

4-28

Figure 4-29.

Attachment of Protective Flap to Container

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 b. Stitch protective flap to container, using thread, nylon, V-T-295, Type I, Class A, Size E or equivalent, as shown in Figure 4-29.

d. Install new pull-the-dot fastener through the fold or folds at the 4½ +¼ -0 inch mark as measured in step b. 4.8.10 LPU-3/P and 10/P Lengthening of Carbon Dioxide Cylinder Retaining Lanyard. a. If the carbon dioxide cylinder retaining lanyard on the LPU-3/P and 10/P are less than 4 inches, use the following procedures to lengthen the carbon dioxide cylinder retaining lanyards to 4 ½ inches +¼ and -0. b. Cut existing retaining lanyard approximately 1½ inches from cylinder pocket. c. Sew a piece of strap material (webbing, nylon, MIL-T5038, Type III, 0.075 inch wide, sage green or equivalent) to the retaining lanyard. Be sure to add enough tape so that the total length of retaining lanyard will be 4½ inches +¼ and -0 from the edge of the pocket to the center of the pull-the-dot fastener. Allow approximately ¼ inch for the lap joints as shown in Figure 4-31.

Figure 4-30.

Shortening of Carbon Dioxide Cylinder Retaining Lanyard

4.8.9 LPU-3/P and 10/P Shortening of Carbon Dioxide Cylinder Retaining Lanyard. To shorten length of carbon dioxide cylinder retaining lanyard, proceed as follows:

d. Stitch added webbing to retaining lanyard using thread, nylon, V-T-295, Type I, Class A, Size E or equivalent, as shown in Figure 4-31. e. Sear cut edges of all tapes.

a. Remove installed pull-the-dot fastener from end of retaining lanyard. b. Extend retaining lanyard and measure from top edge of pocket to a point 4-½ +¼ -0 inch on lanyard. Make a mark at this point. See Figure 4-30.

Do not cut retaining lanyard. c. Measure an additional 5/8 inch for starting point for folds. Depending on amount of material remaining, double or triple fold under end portion of lanyard, using 1¼ inches for each fold.

4-29

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 4-31.

4-30

Lengthening a Carbon Dioxide Cylinder Retaining Lanyard

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

CHAPTER 5 INSPECTION SECTION I GENERAL 5.1

SCOPE.

ficiency Report (DR) in accordance with TO 00-35D-54 including the MAJCOM functional manager point of contact. Document the Information Only DR probable cause of failure in accordance with the appropriate troubleshooting tables. The Information Only Deficiency Report will be provided to the MAJCOM functional managers for possible corrective actions.

This chapter contains instructions for the inspection of flotation equipment. The procedures detailed present a logical sequence for a proper inspection. Inspection of flotation equipment described in this chapter shall be strictly adhered to; no willful neglect will be tolerated. 5.1.1

Requirements. NOTE

•

Cylinder and valve assembly or Inflation assemblies are under pressure; do not attempt to remove valve assembly from cylinder.

•

Inflation assembly contains compressed gas under pressure. Carefully remove life raft and accessory kit from applicable case/container so as not to discharge inflation assembly and place on inspection/test surface. To prevent possible damage to life raft by the cylinder, position case/container so cylinder is next to the inspection surface. With the case/container in this position, the cylinder will not drop to the surface.

•

•

•

Extreme caution/care must be taken during the testing to ensure that all connections are properly installed. Personnel must be protected to prevent injury. DO NOT disturb or pull actuating cable during testing to prevent an inadvertent inflation that could result in damage of equipment and injury or death to personnel. Personnel working with or near dangerous pressures must be protected by a safety shield or located at a distance sufficient to prevent injury.

Inspection and test areas must be smooth, free of splinters, sharp projections, and oil stains. Areas with abrasive characteristics shall be covered. If flotation equipment fails the functional test due to improper maintenance, document the failure by submitting an Information Only De-

•

Data pertaining to organization, unit of assignment, or activity entered on AFTO/DD Forms or stenciled on life support/survival equipment could divulge the base, activity, or unit to which the item is assigned. This information may be omitted, deleted, or obliterated at the option of the MAJCOM.

•

Soapy water is the preferred method of detecting leaks. Leak Test Compound, MIL-PRF25567 or equivalent may be used in lieu of soapy water. A leak detector may be used as an alternative method providing that the detector must meet or exceed ASTM E1002-93 and ASME requirements for leak detection.

•

Minor deviations such as stitching patterns, locations of repairs, or feature attachments like color locations of handles, and sea anchors may be permitted. Deviations must not compromise security of attachment or flotation stability.

•

Failure to use an OSHA-approved air nozzle/ gun will result in oral inflation time test exceeding required time.

All flotation equipment shall be subjected to the following type of inspections and test. •

Special Inspection.

•

Preflight/Screening Inspection.

•

Initial Installation Inspection.

•

Periodic Inspection.

•

Functional Test.

Change 2

5-1

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 •

Leakage Test.

•

Hydrostatic Test.

crease cold cracking of the material. LRU-1/P and F-2B life rafts will not be functionally tested during the Initial Inspection, as a MAJCOM option.

5.1.1.1 Special Inspection. A Special Inspection on flotation equipment in service or in storage shall be performed for mildew whenever weather or other conditions warrant. The extent of the Special Inspection will be determined by the inspector or supervisor following review of circumstances or conditions to which the equipment has been subjected. If conditions warrant, the inspector or supervisor shall direct a complete inspection and inflation test of the equipment regardless of last inspection date or Functional Test. If a Functional Test is performed on a life raft assembly during a Special Inspection, stencil life raft as required and recalculate the next Functional Test due date to ensure that it occurs during the following fourth Periodic Inspection. 5.1.1.2 Preflight/Screening Inspection. All flotation equipment received from supply shall have a Screening Inspection prior to performing any other type of inspection. The Preflight/Screening Inspection shall consist of a visual inspection of equipment for obvious defects that might cause malfunctions. If Preflight/Screening Inspection indicates any damage or defect, a determination of maintenance repair capability must be made. If inspection dictates, a deficiency report should be made promptly. NOTE Prepositioned passenger life preservers are exempt from the Preflight Inspection, however, major commands will establish procedures to ensure adequate inspection of prepositioned life preservers is accomplished. 5.1.1.3 Initial Installation Inspection. An Initial Installation Inspection shall consist of a Screening and Periodic Inspection. A Functional Test shall be performed on all flotation equipment (except the LRU-1/P and F-2B life rafts) received from supply, another activity, or from the manufacturer. The purpose of this inspection is to ensure that equipment being put in service at any activity meets all the requirements set forth in this manual. Although equipment may be tagged serviceable, unknown storage and handling conditions may cause unseen damage. New equipment received from manufacturers may have an unseen deficiency incorporated at time of manufacture. If any deficiencies are noted, a deficiency report should be made promptly. NOTE Performance of a Functional Test during Initial Installation Inspection is a MAJCOM option. Subjecting flotation equipment to CO2 tends to in-

5-2

5.1.1.4 Periodic Inspection. A Periodic Inspection shall be performed on all in service flotation equipment at specified intervals. It shall consist of a thorough visual inspection of components and accessories, a leakage test, and a Functional Test when required. 5.1.1.5 Functional Test. The LRU-1/P and F-2B life rafts will be functionally tested only when the attached inflation assembly is due a hydrostatic test in accordance with Chapters 5 and 8 during the first phase of the Periodic Inspection. All other inflation equipment will have a Functional test preformed at certain intervals, depending on equipment during the first phase of a Periodic Inspection. The Functional Test will be accomplished with the inflation assembly that has been attached to the equipment to determine proper operation. 5.1.1.6 Hydrostatic Test. A Hydrostatic Test will be performed in accordance with TO 42B5-1-2, Department of Transportation Code of Federal Regulation, CFR Title 49, and any other appropriate directives. In addition, for the 25Man Life Raft cylinder, use MIL-R-8573. Refer to Chapter 8. 5.2

CONDEMNED FLOTATION EQUIPMENT.

a. Flotation equipment which fails to meet inspection criteria shall be condemned in accordance with applicable volume in AFMAN 23-110. b. Condemned flotation equipment may be used for ground training when marked in accordance with Paragraph 1.2. c. Disposal of condemned flotation equipment shall be accomplished in accordance with AFMAN 23-110. 5.3

INSPECTION PROCEDURES.

5.3.1 General Introduction. For technical information related to inspection and maintenance, refer to Chapter 1. 5.3.2 Operation and Use. For information related to operation and use, function, and donning/fitting, refer to Chapter 2. 5.3.3 Flotation Section. For information related to facilities, special tools, support equipment, and consumable materials, refer to Chapter 3.

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 5.3.4 Configuration. For information related to configuration/modification, refer to Chapter 4. 5.3.5 Inspection. Table 5-1 lists paragraphs outlined in Section II through Section IV of this chapter for applicable inspection procedures for life raft and life preserver assemblies. 5.3.5.1 Markings Inspection. Compare markings on equipment to applicable tables. Restore faded markings. If needed, correct any markings. Refer to Table 5-2 through Table 5-10.

tions. However, survival items and accessories shall not exceed established inspection intervals in accordance with applicable technical order. 5.3.6

Maintenance and Repair. Refer to Chapter 6.

5.3.7

Folding and Packing. Refer to Chapter 7.

5.3.8

Inflation Assemblies. Refer to Chapter 8.

5.3.9

Illustrated Parts Breakdown. Refer to Chapter 9.

5.3.5.2 Update Records. Inspect and update records as required in accordance with applicable paragraphs. 5.3.5.3 Survival Items and Accessories. All life raft and life preserver survival items and accessories shall be inspected concurrently with life raft and life preserver inspec-

5-3

5-4

LPU-10/P

LPU-3/P

A-A-50652

MA-1 Sea Rescue Kit MA-2 Sea Rescue Kit LPU-6/P

25-Man

F-2B (20-Man)

Assembly LRU-1/P (7-Man)

Paragraph 5.6 Paragraph 5.6 Paragraph 5.6 Paragraph 5.6

Paragraph 5.4

Inspection Requirements Paragraph 5.4 Paragraph 5.4

Paragraph 5.6.1 Paragraph 5.6.1 Paragraph 5.6.1 Paragraph 5.6.1

Paragraph 5.4.1

Periodic Inspection Paragraph 5.4.1 Paragraph 5.4.1

Paragraph 5.6.1.1 Paragraph 5.6.1.1 Paragraph 5.6.1.1 Paragraph 5.6.1.1

Paragraph 5.4.1.1

Screening Inspection Paragraph 5.4.1.1 Paragraph 5.4.1.1

Paragraph 5.6.1.2 Paragraph 5.6.1.2 Paragraph 5.6.1.2 Paragraph 5.6.1.2

Paragraph 5.4.1.2

Paragraph 5.6.1.3 Paragraph 5.6.1.3 Paragraph 5.6.1.3 Paragraph 5.6.1.3

Paragraph 5.4.1.3

Leakage Test Paragraph 5.4.1.3 Paragraph 5.4.1.3

Paragraph 5.6.1.4 Paragraph 5.6.1.4 Paragraph 5.6.1.4 Paragraph 5.6.1.4

Deflation

Inspection Procedures

Functional Test Paragraph 5.4.1.2 Paragraph 5.4.1.2

Table 5-1.

Paragraph 5.6.1.7 Paragraph 5.6.1.7 Paragraph 5.6.1.7 Paragraph 5.6.1.7

Paragraph 5.5

Survival Accessories Paragraph 5.5 Paragraph 5.5

Paragraph 5.6.1.5 Paragraph 5.6.1.5

Paragraph 5.4.1.4

Inflation Assembly Paragraph 5.4.1.4 Paragraph 5.4.1.4

Paragraph 5.6.1.8

Paragraph 5.6.1.8

Paragraph 5.6.1.8

Paragraph 5.6.1.8

Paragraph 5.6.2

Paragraph 5.6.2

Paragraph 5.6.2

Paragraph 5.4.2.2 Paragraph 5.4.2.2 Paragraph 5.6.2

Paragraph 5.4.2.3

Paragraph 5.4.2

Paragraph 5.4.1.5

Paragraph 5.4.1.5

Preflight Inspection Paragraph 5.4.2

Records Updating Paragraph 5.4.1.5

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

SECTION II LRU-1/P (7-MAN), F-2B (20-MAN) AND 25-MAN LIFE RAFT ASSEMBLIES 5.4 LRU-1/P (7-MAN), F-2B (20-MAN) AND 25-MAN LIFE RAFT ASSEMBLIES. a. Life rafts will be given a Periodic Inspection at the initial installation and periodically at intervals not to exceed one (1) year plus or minus 10 days of established intervals. F-2B life rafts will be given a periodic inspection at the initial installation and periodically at intervals not to exceed 450 days plus or minus 5 days of established intervals. b. A leakage test shall be performed during every Periodic Inspection.

tridge Disc (Figure 9-4, 32) must be replaced after each actuation, refer to Chapter 8. •

d. Hydrostatic Test shall be performed as follows: (1) LRU-1/P or F-2B Life Raft - at least once every 5 years on carbon dioxide cylinders.

c. A Functional Test shall be performed every fourth Periodic Inspection. Except for the LRU-1/P and F-2B Life Rafts, see note below. (1) If Functional Test is required, do not remove inflation assembly; refer to appropriate paragraph. (2) If Functional Test is not required, disconnect actuating line or lanyard assemblies from each cable port in valve assembly, remove inflation assembly and perform leakage test; refer to appropriate paragraph.

Hydrostatic Testing shall be accomplished in accordance with TO 42B5-1-2, Chapter 8 of this manual, and Department of Transportation Code of Federal Regulation, Title 49, and additional official documents required in the qualification for use of cylinders. In addition, for the 25-Man cylinder/reservoir, use MIL-R-8573 and Chapter 8.

(2) 25-Man Life Raft - at least once every 3 years on compressed air cylinders/reservoirs. 5.4.1

Periodic Inspection.

5.4.1.1 Visual Inspection. Visually inspect life raft assembly for the following:

NOTE •

•

•

The inspection cycle of the F-2B (20-Man) is limited by the installed survival equipment. The inspection may be adjusted; however it shall not exceed the service life of the installed radio batteries or 450 days, whichever comes first. Functional Test will be accomplished with the inflation assembly which is attached to the life raft. Inflation Assembly will remain with the same life raft until the life raft is functionally tested or inspection reveals the inflation assembly to be unserviceable. This is to ensure that inflation assembly is checked for proper function. On LRU-1/P and F-2B life rafts a functional test shall be preformed only when the attached assembly is due a hydrostatic test in accordance with Chapters 5 and 8. Check date of hydrostatic test. Perform a Functional Test during the last scheduled inspection prior to hydrostatic test. If Valve Assembly PN 9864-05 is installed, valve will be checked during Initial Installation Inspection and at each life raft functional test and leakage test to ensure that the self-venting portion of valve is functioning properly. Car-

Inspection and test areas must be smooth, free of splinters, sharp projections, and oil stains. Areas with abrasive characteristics shall be covered or padded. a. Inspect life raft case/container for the following: (1) Proper configuration. Refer to Chapter 4. (2) Cracks, crushed plastic, cuts, tears, punctures, deterioration, abrasions, stains, dirt, hook/pile fasteners, and general cleanliness. NOTE If hook/pile fasteners lose their clinging ability, remove lint and debris that get caught in the hooks and loops. (3) Seams for proper attachment. (4) Straps and handles for security and wear. (5) Hardware for security of attachment, corrosion, damage, wear and, if applicable, ease of operation.

Change 1

5-5

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 (6) Safety-ties for security.

(4) All patches for proper adhesion.

(7) Markings for legibility and correctness. Refer to appropriate Tables and step g. below.

(5) Pockets and sea anchor for tears, abrasions, and security of attachment.

(8) Any other parts for wear, damage and security.

(6) Straps, handles, and hardware for wear, deterioration, security of attachment, and ease of operation.

(9) DD Form 1574 entries for correspondence with appropriate 300 series AFTO Forms.

(7) Topping-off valves for attachment, deterioration, and ease of operation.

b. Carefully remove life raft from case/container so as not to discharge inflation assembly. c. If Functional Test is required, do not remove inflation assembly; refer to appropriate paragraph. If Functional Test is not required, disconnect actuating line or lanyard assemblies from each cable port in valve assembly, remove inflation assembly and perform leakage test; refer to appropriate paragraph. d. Inspect life raft for the following:

(8) Markings for legibility and correctness. Refer to appropriate tables and step g. below. e. If any discrepancy exists, repair or replace. Refer to Chapter 6 and Chapter 9. f. Inspect survival items. Refer to Paragraph 5.5. g. Marking Inspection. To inspect and restore markings, proceed as follows:

(1) Proper configuration. Refer to Chapter 4. (1) Compare markings, refer to appropriate tables. (2) Fabric for cuts, tears, punctures, deterioration, abrasions, stains, dirt, hook/pile fasteners, and general cleanliness. NOTE If hook/pile fasteners lose their clinging ability, remove lint and debris that gets caught in the hooks and loops. (3) Seam tapes for proper adhesion. Table 5-2. Case/Container

Marking LIFE RAFT, INFLATABLE, 7-MAN TYPE LRU-1/P SPECIFICATION MIL-L-5567D [stencil name of manufacturer] CONTRACT NO. [stencil applicable numbers] GROSS WEIGHT INFLATE AT THIS END

INFLATE OTHER END

5-6

TO INFLATE, LIFT FLAP, PULL HANDLE OUT UNTIL FREE [stencil applicable survival items]

Change 1

(3) If required, paint over incorrect markings using waterproof black ink. (4) If required, add correct markings as close as possible to specified location using white or contrasting color ink.

LRU-1/P Case and Container Markings

Carrying Case

Accessory Container

(2) Restore any faded or missing markings, if known, using waterproof black ink.

Location Side panel.

Letter Height 1 inch

Both sides of case at pull handle end.

1 inch

End panel opposite pull handle end. Pull handle flap.

1 inch

Front panel.

½ inch

½ inch

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 Table 5-2.

LRU-1/P Case and Container Markings - Continued

Case/Container

Marking

Location

Letter Height

NOTE All markings shall be stamped or stenciled with waterproof black ink. All words enclosed by brackets in the column headed Marking shall not be stenciled on the equipment; they are to be regarded as instructions only.

Table 5-3. Marking 1 [Block Style] 5 [Block Style]

2 [Block Style] 3 [Block Style] 4 [Block Style] EMERGENCY RADIO INSIDE

MA-1 Sea Rescue Kit Container Markings Location Letter Height On life raft containers; with containers stand- 6 inches (approximately) ing vertically, mark appropriate number near the top with number facing out. Turn container over and mark opposite end with same number near the top and facing out. On supply containers (follow same procedures 6 inches (approximately) as above). On containers 2 and 4, adjacent to longitudinal strap (with single, centered, V-ring).

½ inch

NOTE All markings shall be stamped or stenciled with waterproof black ink. All words enclosed by brackets in the column headed Marking shall not be stenciled on the equipment; they are to be regarded as instructions only.

Table 5-4. Case/Container Carrying Case

Carrying Case Part Number 50H3501-8

F-2B Life Raft Case and Container Markings

Marking LIFE RAFT, TWENTY-MAN TYPE F-2B USAF SPECIFICATION MIL-L-009131F (WP) [stencil name of manufacturer] CONTRACT NO. [stencil applicable numbers] GROSS WEIGHT INFLATE AT THIS END

Location Between handle keepers on one side of carrying case.

INFLATE OTHER END

End panel opposite pull handle end. Pull handle flap.

1 inch

Top of Case

½ inch

End Panel at pull handle.

½ inch

TO INFLATE, LIFT FLAP, PULL HANDLE OUT UNTIL FREE OPEN TOP OF CASE BEFORE INFLATION TO INFLATE, OPEN TOP OF CASE, PULL LINE HARD

Letter Height 1 inch

Both sides of carrying case at 1 inch pull handle end.

½ inch

5-7

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 Table 5-4.

F-2B Life Raft Case and Container Markings - Continued

Case/Container Marking Location Accessory Container 20-MAN LIFE RAFT ACCESSORY Main panel. (Wing Installation) CONTAINER ASSY FOR WING INSTALLATION Accessory Contain- TWENTY-MAN LIFE RAFT Side panel. ers ACCESSORY CONTAINER F-2B, DROPPABLE [stencil name of manufacturer] MIL-L-009131F (WP) [stencil applicable survival items] INFLATE AT THIS END On top of case and on front of top cover at pull handle end.

TOP

TOP

Top of case on left and right side.

Letter Height 1 inch

½ inch

1 inch

1 inch

NOTE All markings shall be stamped or stenciled with waterproof black ink. All words enclosed by brackets in the column headed Marking shall not be stenciled on the equipment; they are to be regarded as instructions only.

Table 5-5. Marking 1 [Block Style]

5 [Block Style] 2 [Block Style] 3 [Block Style] 4 [Block Style] EMERGENCY RADIO INSIDE

MA-2 Sea Rescue Kit Container Markings

Location On life raft containers; with containers standing vertically, mark appropriate number near the top with number facing out. Turn container over and mark opposite end with same number near the top and facing out.

Letter Height 6 inches (approximately)

On supply containers (follow same procedures as above).

6 inches (approximately)

On containers 2 and 4, adjacent to longitudinal strap (with single, centered, V-ring).

½ inch

NOTE All markings shall be stamped or stenciled with waterproof black ink. All words enclosed by brackets in the column headed Marking shall not be stenciled on the equipment; they are to be regarded as instructions only.

Table 5-6. Kit/Case Case, 25-Man Crew

5-8

Twenty-Five-Man Life Raft/Survival Kit Case Markings

Marking LIFE RAFT, TWENTY-FIVE-MAN USAF GROSS WEIGHT

Location 3 inches below third strap1 .

Letter Height 1 inch

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 Table 5-6. Kit/Case

Twenty-Five-Man Life Raft/Survival Kit Case Markings - Continued

Marking SERIAL NO.2 DESIGNATION2 2 PART NO. SPECIFICATION2 DESIGN CODE2 STOCK NO.2 LIFE RAFT/SURVIVAL KIT 25-MAN CREW MFR CODE2 CONTRACT AF2, 4 , 5 2 DATE MFD. TO DEPLOY LIFE RAFT AFTER IT IS RAISED PULL PIN OUT AND PUSH (STRAP) CASE OUTWARD DESIGNATION2 SERIAL NO.2 2 PART NO. SPECIFICATION2 DESIGN CODE2 2 STOCK NO. LIFE RAFT/SURVIVAL KIT 25-MAN CREW CONTRACT AF2, 4 MFR. CODE2 DO NOT CLEAN WITH SOLVENT DESIGNATION2 PART NO.2 SPECIFICATION2 STOCK NO.2 LIFE RAFT/SURVIVAL KIT CONTRACT AF2, 4 DATE MFD5

Case, 25-Man Crew

SERIAL NO.2

Letter Height Line five 3/8 inch; all others ¼ inch

½ inch below identifica- ¼ inch tion plate. Last line shall be 2 3/8 inch inches above first strap.

Left side of quick-release bracket, ½ inch below first strap.3

Line five 1/8 inch; all others 3/32 inch

3½ inches below first strap. Below third strap1, 3

3/16 inch Line five 3/8 inch; all others ¼ inch

DESIGN CODE2 25-MAN CREW MFR CODE2 ½ inch below identifica- ¼ inch tion plate. Last line shall be 1½ 3/8 inch inches above second strap. On top half of side fac- 1 inch ing air craft (when stalled) next to handle.

THIS SIDE UP FOR HORIZONTAL INSTL. NO STEP6 NO SEAT6

Case, 25-Man Troop

Location 1 inch below second strap.3

LIFE RAFT TWENTY-FIVE MAN USAF GROSS WEIGHT DO NOT CLEAN WITH SOLVENT DESIGNATION2

SERIAL NO.2

Centered between first and second straps7

1 inch

Below first strap, 1½ inch from edge of case. On top half of side, opposite leg3

3/16 inch

Line five 1/8 inch; all others 3/32 inch

PART NO.2 SPECIFICATION2 DESIGN CODE2 2 STOCK NO. LIFE RAFT/SURVIVAL KIT 25-MAN TROOP 5-9

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 Table 5-6. Kit/Case

Twenty-Five-Man Life Raft/Survival Kit Case Markings - Continued

Marking MFR. CODE2 CONTRACT AF2, 4 THIS SIDE UP FOR VERTICAL INSTL. NO STEP6 NO SEAT6

Location One inch from case opening. On both ends of top.

Letter Height 3/8 inch 1 inch

NOTE All markings shall be stamped or stenciled with waterproof black ink. All markups of 1/8 inch in height may be hand scribed using a permanent pigmented waterproof ink pen. 1

Straps, for reference purposes only, are numbered 1 through 3 beginning from quick-release bracket end of 25-Man crew case. 2 Stencil applicable number. 3 Identification Plate, restore data from original identification plate. The data must include part number and stock number. Metallic-foil adhesive backed identification plate shall conform to MIL-P-19834. 4 Stencil name of manufacturer. 5 Stencil month and year. 6 Use red paint (or equivalent). 7 Straps, for reference purposes only, are numbered 1 through 3 beginning from side containing legs of 25-Man troop case. Table 5-7.

LRU-1/P LIFE RAFT Markings

Marking LIFE RAFT, INFLATABLE, 7-MAN Type LRU-1/P Specification MIL-L-5567D [stencil name of manufacturer] CONTRACT NO. [stencil applicable numbers] DATE OF MANUFACTURE [month and year] SERIAL NO. [stencil applicable numbers] KEEP EVERYTHING TIED TO RAFT TO AVOID LOSS IN CASE OF CAPSIZING. SUPPLY POCKET BAILER TO INFLATE COMPARTMENTS MANUALLY

ATTACH HAND PUMP TO VALVE CAP, UNSCREW CAP 1½ TURNS TO THE RIGHT, AND THEN PUMP TO INFLATE RAFT. WHEN DESIRED PRESSURE IS ATTAINED, TIGHTEN VALVE CAP AND REMOVE PUMP. TO DECREASE PRESSURE OPEN VALVE 1½ TURNS TO THE RIGHT AND BLEED. TO OPEN

5-10

Location Tube, port/starboard bow, outboard.

Letter Height 1 inch

Tube, inboard.

½ inch

Supply pocket, starboard ½ inch side. Combination supply pocket ½ inch and bailer, port side. On a white rubber patch ¼ inch located on tube adjacent to topping off valves.

Outer cover patch of each top-ping-off valve.

½ inch

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 Table 5-7.

LRU-1/P LIFE RAFT Markings - Continued

Marking SEA ANCHOR MIL-A-3339B TYPE I SIZE 1 [stencil name of manufacturer] CONTRACT NO. [stencil applicable number] DATE OF MANUFACTURE [month and year] [International Morse Code - See Figure 5-1]

Location Sea anchor.

Letter Height ¼ inch

Mounting of Strobe Light

Tube, inboard bow. See Figure 4-2. Tube, outboard, bow.

½ inch

Tube, outboard stern.

1 inch

Tube, port side, outboard, equally spaced from each end of tube.

1 inch

Stenciled on floor, adjacent ¼ inch to the inflatable seat.

LADDER

LADDER

Climb in here

1 inch

Tube, outboard, above lad- 1 inch der. NOTE

All markings shall be stamped or stenciled with waterproof black ink. All words enclosed by brackets in the column headed Marking shall not be stenciled on the equipment; they are to be regarded as instructions only.

5-11

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 5-1. Table 5-8.

International Morse Code

LRU-1/P Life Raft Markings (MA-1 Sea Rescue Kit Use)

Marking SUPPLY CONTAINERS 2 AND 4 CONTAIN FOOD, CLOTHING, SIGNALS, AND RADIO. NUMBER 3 CONTAINS A MEDICAL KIT AND ADDITIONAL ITEMS FOUND IN 2 AND 4

Location On floor, on both sides of seat.

Letter Height ½ inch

NOTE Markings are in addition to all required markings for LRU-1/P life rafts.

Table 5-9.

F-2B Life Raft Markings

Marking LIFE RAFT, INFLATABLE, TWENTY-MAN TYPE F-2B USAF SPECIFICATION MIL-L-009131F(WP) [stencil name of manufacturer] CONTRACT NO. [stencil applicable numbers] DATE OF MANUFACTURE [stencil month and year] SERIAL NO. [stencil applicable numbers] EQUALIZER TUBE - CLAMP SHUT AFTER FLOTATION TUBES ARE INFLATED

5-12

Location Tube segment adjacent to cylinder sling, outboard.

* Tube

Letter Height 1 inch

segment adjacent to 1 inch equalizer tube, inboard.

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 Table 5-9.

F-2B Life Raft Markings - Continued

Marking

Location tube adjacent to sea anchor pocket, inboard.

*On

Letter Height 1 inch

USE SEA ANCHOR TO REDUCE DRIFT

CANOPY MAST SOCKET

BOARDING RAMP

CANOPY SOCKET CLIMB IN HERE, SWIM UP ON RAMP [Number tube segments from 1 through 12.]

Mounting of STROBE LIGHT [Number tube segments from 13 through 24.]

INFLATION VALVE UPPER TUBE INFLATION VALVE LOWER TUBE

HEAVING LINE KEEP ACCESSORIES TIED TO RAFT TO AVOID LOSS IN CASE OF CAPSIZING TO ERECT CANOPY INSERT CANOPY RODS IN CANOPY SOCKETS. POSITION CANOPY ON RAFT WITH OPENING FLAPS OVER BOARDING RAMPS. INSERT TOP OF RODS IN TURN BUTTON EYELETS AND LOCK IN PLACE. ERECT CENTER MAST. ROLL UP CANOPY OR SNAP AND TIE OVER RAFT.

On both sides of floor adjacent to mast sleeve socket. *½ inch below center line of every second tube segment.

*On

tube above each canopy rod socket. *On tube above each boarding ramp. Starting at carbon dioxide cylinder and working clockwise, number the outboard side of each upper tube segment consecutively from 1 through 12. Tube, inboard [See Figure 4-6]. Starting at carbon dioxide cylinder and working clockwise, number the outboard side of each lower tube segment consecutively from 13 through 24. *On tube adjacent to topping-off valve. On both sides of floor adjacent to topping-off valve. *On tube adjacent to heaving line pocket. On both sides of floor adjacent to floor support tube. On both sides of floor adjacent to floor support tube.

½ inch

1 inch

½ inch 1 inch ½ inch

½ inch ½ inch

1 inch 1 inch

½ inch 1 inch

½ inch

5-13

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 Table 5-9.

F-2B Life Raft Markings - Continued

Marking INFLATION VALVE FLOOR SUPPORT

CLAMP EQUALIZER TUBE

SHARP ITEMS ON CLOTHING MAY PUNCTURE RAFT

CYLINDER COVER TO INFLATE TUBES MANUALLY ATTACH HAND PUMP TO VALVE CAP, UNSCREW CAP 1½ TURNS TO THE RIGHT, AND THEN PUMP TO INFLATE RAFT. WHEN DESIRED PRESSURE IS ATTAINED, TIGHTEN VALVE CAP AND REMOVE PUMP. TO DECREASE PRESSURE OPEN VALVE 1½ TURNS TO THE RIGHT AND BLEED. TO OPEN

SURVIVAL KIT ATTACHED TO LINE/HANDLE IN WATER BELOW

SEA ANCHOR MIL-A-3339B TYPE I SIZE 3 [stencil name of manufacturer] CONTRACT NO. [stencil applicable numbers] DATE OF MANUFACTURE [month and year] [International Morse Code - See Figure 5-1]

Location On both sides of floor adjacent to topping-off valve in floor support tube. On both sides of floor adjacent to equalizer clamp pocket. On both sides of floor adjacent to floor support tube. Cylinder cover. On a white rubber patch located on both sides of floor adjacent to floor support tube.

Letter Height 1 inch

½ inch

1 inch

½ inch ¼ inch

*Outer

cover patch of top- ½ inch ping-off valve located in tube. On both sides of floor ad- ½ inch jacent to topping-off valve (without cover patch) located in tube. On top of each tube di½ inch rectly over the line or handle where survival kit is attached.

Location

¼ inch

Optional: See Figure 4-5.

¼ inch

NOTE All markings shall be stamped or stenciled with waterproof black ink. All words enclosed by brackets in the column headed Marking shall not be stenciled on the equipment; they are to be regarded as instructions only. *

Marking located on both upper and lower tubes.

5-14

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 Table 5-10.

F-2B Life Raft Markings (MA-2 Sea Rescue Kit Use)

Marking SUPPLY CONTAINERS 2 AND 4 CONTAIN FOOD, CLOTHING, SIGNALS AND RADIO. NUMBER 3 CONTAINS A MEDICAL KIT AND ADDITIONAL ITEMS FOUND IN 2 AND 4.

Location On floor, on both sides of life raft.

Letter Height 1 inch

NOTE Markings are in addition to all required markings for F-2B life raft.

Table 5-11.

DESIGNATION

*

Marking SERIAL NO.

Twenty-Five-Man Life Raft Markings

*

PART NO. SPEC.* STOCK NO.* DESIGN CODE* LIFE RAFT, INFLATABLE, 25-MAN USAF MFR. CODE**** CONTRACT NO.*/*** DATE OF FABRIC MFR.* DATE OF RAFT MFR.*** SHARP ITEMS ON CLOTHING MAY PUNCTURE RAFT

Location On tube segments 4 and 8.

**

Letter Height Lines five and six 1 inch; all others ½ inch

On both sides of floor adjacent 1 inch to tube segments 2 and 10, 7 and 5. On tube segments 5 and 8. 1 inch

KEEP ACCESSORIES TIED TO RAFT TO AVOID LOSS IN CASE OF CAPSIZING OPEN CLOSED

Around all topping-off valves.

½ inch

SURVIVAL EQUIPMENT PULL IN IMMEDIATELY

On tube segments 4 and 7.

1 inch

INFLATION VALVE UPPER TUBE INFLATION VALVE LOWER TUBE

On tube segments 8 and 4. On both sides of floor adjacent to tube segment 8 and 4. On both sides of floor adjacent to inflation valve of anchor ring. On tube segments 3 and 9.

½ inch ½ inch ½ inch

On tube segments 7 and 5.

1 inch

INFLATION VALVE FLOOR SUPPORT

USE SEA ANCHOR TO REDUCE DRIFT

[***** - place arrow above stencil] PUT FOOT IN STIRRUP CLIMB IN HERE

½ inch

5-15

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 Table 5-11.

Twenty-Five-Man Life Raft Markings - Continued

Marking Location SURVIVOR LOCATOR LIGHT WHEN CANOPY IS IN On tube segments 3 and 1. POSITION, MOVE LIGHT TO TOP OF CANOPY SWIM UP ON RAMP CLIMB IN HERE On tube segments 2 and 10. On tube segments 3 and 9, 5 BOARDING RAMP and 7.

HEAVING LINE CANOPY MAST SOCKET

On tube segments 3 and 9. On both sides of life raft, and anchor ring adjacent to canopy mast socket. CANOPY ROD SOCKET Stencil horizontally across each seam ad joining tube segments on both sides of life raft; total amount of 20 places. CYLINDER SLING On cylinder slings. JET PUMP On tube segments 9 and 2 adjacent to jet pumps. HAND PUMP, CANOPY CANOPY RODS & MASTS On floor on both sides of life STOWED INSIDE raft within center anchor ring. TEST STRIP On floor on both sides of life raft within center anchor ring. PULL TAPE TO EXPOSE ZIPPER (stencil on tape) On floor on both sides of life raft within center anchor ring. 1. TO ERECT CANOPY INSERT RODS IN SOCKETS On floor on both sides of life ON TUBE. raft on outer side of anchor ring in line with boarding 2. POSITION CANOPY WITH OPENING AT BOARDramp and stirrup. ING RAMP. 3. STRETCH CANOPY OVER RODS & SECURE. 4. INSERT MAST ASSEMBLIES IN MAST SOCKETS & SECURE WITH TIE CORDS. 5. PULL SIDES DOWN OVER RAFT TUBE & SECURE WITH TIE CORD AT OPENING. On tube segments 2 and 10.

KNIFE (PLACARD, MORSE CODE)

5-16

On both tube segments numbered 1. On floor on both sides of life raft between canopy mast sockets and outer tube segments. Placards shall be located in four places.

Letter Height 1 inch 1 inch 1 inch

½ inch ½ inch

½ inch

½ inch ½ inch ½ inch

½ inch

½ inch

½ inch

½ inch

½ inch (See Figure 5-2)

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 Table 5-11.

Twenty-Five-Man Life Raft Markings - Continued

Marking (PLACARD HAND PUMP INSTR.)

Location Letter Height On floor on both sides life raft, ¼ inch inner side of anchor ring. (See Figure 5-3)

*

Stencil applicable number. Life raft tube sections to be marked 1 through 10, clockwise, starting with cylinder closest to ramp. Locate on the outer perimeter, approximately in center of tube section. See Figure 5-4 for proper tube segment identification. *** Stencil name of manufacturer. **** Stencil month and year. ***** All markings shall be stamped or stenciled with waterproof black ink. All words enclosed by brackets in the column headed Marking shall not be stenciled on the equipment; they are to be regarded as instructions only. **

Table 5-12. Trouble Fails to inflate to design shape within 30 seconds.

Troubleshooting Improper Life Raft Inflation (LRU-1/P)

Probable Cause Improper charge in cylinder. Loose coupling nut at cylinder allowing partial escape of charge. Topping-off valve in open position. Obstruction of inlet ports of manifold. Leakage through manifold.

Hole in life raft.

Porous area.

Discrepant inflation valve. Repair in accordance with Chapter 6. Improper Maintenance.

Remedy Install properly charged cylinder. Tighten coupling nut. Ensure all topping-off valves are closed. Remove end plugs of manifold; remove obstruction; reinstall end plugs. Remove end plugs of manifold; check for broken spring or defective check valve. Replace as necessary; reinstall end plugs. Locate hole and repair in accordance with Chapter 6. See Chapter 8. Submit an Information Only Deficiency Report in accordance with TO 0035D-54 including the MAJCOM functional managers point of contact. Document the Information Only DR probable cause of failure in accordance with the appropriate troubleshooting tables. The Information Only Deficiency Report will be provided to the MAJCOM functional managers for possible corrective actions.

5-17

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 5-2.

Figure 5-3.

5-18

Placard, Morse Code

Placard, Hand Pump Instructions

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 5-4.

Tube Segment Identification

5.4.1.2 Functional Test (If Required). To perform Functional Test, proceed as follows:

Gas under pressure. Do not attempt to remove valve assembly from cylinder.

soapy water. A leak detector may be used as an alternate method providing that the detector must meet or exceed ASTM E1002-93 and ASME requirements for leak detection. a. Place life raft on inspection test area in a horizontal position. Place attached cylinder and valve assembly on floor. NOTE

Inspection areas with higher temperatures will cause greater pressure inside life raft tube. When any life raft appears overinflated at any time, pressure shall be reduced (after pressure reading has been recorded) by opening topping-off valves. NOTE •

•

•

Functional Tests will be accomplished with the inflation assembly which is attached to the life raft. Inflation assembly will remain with the same life raft until the life raft is functionally tested or inspection reveals the inflation assembly to be unserviceable. This is to ensure that inflation assembly is checked for proper function. On LRU-1/P and F-2B life rafts, a functional test shall be performed only when the attached inflation assembly is due a hydrostatic test in accordance with Chapters 5 and 8. Check date of hydrostatic test. Perform a Functional Test during the last scheduled inspection prior to hydrostatic test. Soapy water is the preferred method of detecting leaks. Leak Test Compound, MIL-PRF25567 or equivalent may be used in lieu of

When Valve Assembly, PN 9864-05, is installed on life raft, cartridge disc must be replaced after each actuation. Refer to Chapter 8. b. Actuate inflation assembly. (1) For life rafts utilizing vent manifold, ensure the vent/shut poppet went to the up (SHUT) position after actuation, indicating that manifold vent is shut. If manifold PN 9153 does not shut, perform Functional, Pull Test and Adjustment, step k. If manifold PN C-50980 does not shut, dispose of and replace with new manifold (there are no adjustments to this manifold). (2) Valve assembly PN 9864-05 does not require a vent manifold. c. Measure time of inflation, life raft shall inflate to design shape without restriction: (1) LRU-1/P: within 30 seconds. (2) F-2B: within 60 seconds, check pressure of each tube. If pressure exceeds 2.20 PSIG, deflate life raft between 1.50 and 2.20 PSIG. (3) 25-Man: within 7 to 9 seconds.

5-19

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 d. Examine life raft for obvious damage such as cuts, tears, and ruptured seams.

(1) If Valve Assembly PN 9864-05 is installed, rebuilding parts contained in overhaul kit PN 9968.

e. Determine cause if life raft does not properly inflate. Refer to appropriate troubleshooting tables.

(2) If Valve Assembly PN A-128-RDB-HD or MILI-18369 is installed, rebuild using parts contained in overhaul kit PN ASV710.

(1) Inspect valve assembly for cleanliness and embedded foreign matter. (2) 25-Man: Inspect pressure relief valves for leakage. After corrections are made, deflate life raft, install serviceable cylinder, and repeat test. f. If improper inflation is due to a deficient cylinder and valve, refer to the appropriate troubleshooting tables. If improper inflation due to damaged life raft, repair in accordance with Chapter 6 and leak test.

(3) If Vent Manifold PN 9153 is installed, rebuild using parts contained in overhaul kit PN 762. (4) If Vent Manifold PN C-50980 is installed and unserviceable, dispose and replace with new manifold (there are no adjustments to this manifold). k. Functional Pull Test and Adjustment of Vent Manifold PN 9153. To perform the functional-pull test and/or adjust the force required to pull out the vent/shut poppet, proceed as follows: (1) Remove moisture cap from vent manifold.

F-2B-Do not use equalizer clamps furnished with life raft for functional test.

(2) If required, rebuild vent manifold using parts kit 762. Refer to Chapter 6 and Figure 9-5.

g. Measure pressure of each tube as follows. Refer to appropriate test pressure tables.

(3) If not available, fabricate a pull-test adapter in accordance with Paragraph 3.8.3.2.2.

(1) LRU-1/P: after one (1) hour, the difference in pressure between the two tubes shall be no greater than 0.5 PSIG.

(4) Thread pull test adapter into vent manifold and ensure vent is in open (VENT) position. Push pull-test adapter in to open (VENT); pull out to close (SHUT).

(2) F-2B: after one half hour (30 minutes), install locally fabricated equalizer tube clamp streamer (see Figure 3-10 and Paragraph 3.8.3.2.1) to equalizer tube. Pressure shall be between 1.50 and 2.20 PSIG. Do not use equalizer clamps furnished with the life raft for leakage test. (3) 25-Man: after one (1) hour, pressure shall be between 1.50 and 2.0 PSIG. h. Deflate life raft. Proceed as follows: (1) Attach one end of rubber hose to vacuum pump. (2) Open topping-off valve and hold vacuum pump hose over opening in valve. When compartment is collapsed, screw topping-off valve closed. (3) Pull the overlapping tube material away from the CO2 cylinder as the upper and lower tubes deflate. Ensure CO2 cylinder does not rest on tube material of deflated raft. i. Remove cylinder and valve assembly. Refer to Chapters 5 and 8 to inspect.

(5) Attach dial push/pull gauge to pull test adapter. Measure force required to pull out vent/shut poppet; apply a slow, steady pull until the vent “pops” closed. A pull force shall be 6 to 7 pounds. See Figure 5-5. (6) If more than 7 pounds was required to close vent, back out allen set screws equally (symmetrically) with a 5/64 inch allen wrench until 6 to 7 pounds requirement is met. (7) If less than 6 pounds was required to close vent, tighten allen set screws equally (symmetrically) with a 5/64 inch allen wrench until 6 to 7 pounds requirement is met. (8) If 6 to 7 pounds requirement cannot be met or there is obvious damage such as corrosion, wear, or deterioration, replace manifold in accordance with Chapter 6 and recheck closure force of vent in accordance with above paragraphs. (9) Remove pull-test adapter and retain for future use. (10) Set vent to closed (SHUT) position.

j. Remove vent manifold and rebuild or replace as required. 5-20

(11) Replace moisture cap.

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 (2) If manifold is unserviceable, dispose of and replace with new manifold. (3) If not available, fabricate a streamer in accordance with Paragraph 3.8.3.2.1.

Figure 5-5.

(4) Use a 6-40 threaded screw. Thread screw into vent manifold and ensure vent is in an open (VENT) position. Push screw in to open (VENT); pull out to close (SHUT). Listen for two distinct popping sounds.

Measuring Pull Force on Vent Manifold

l. Vent Manifold PN C-50980. To perform a functional test on vent manifold PN C-50980, proceed as follows:

m. Perform leakage test in accordance with Paragraph 5.4.1.3.

(1) Vent manifold does not require a pull test and there are no adjustments. Table 5-13. Trouble Life raft fails to inflate to design shape within 60 seconds

Troubleshooting Improper Life Raft Inflation (F-2B) Probable Cause Loose coupling nut(s) at cylinder allowing partial escape of charge. Topping-off valve in open position. Hole in life raft. Discrepant inflation valve. Improper inflation due to valve. Improper charge in cylinder. Faulty vent manifold. Porous Area. Faulty inflation valve.

Inlet valve obstruction. Raft leakage between raft and inlet valve Raft leaking between raft and inlet valve

Nylon gaskets or copper seals not properly seated. If nylon gaskets or copper seals have been replaced, check inlet valve. Improper Maintenance.

Remedy Tighten coupling nut(s). Ensure all topping-off valves are closed. Locate hole and repair. See Chapter 6. See Chapter 8. Inspect position of cam assembly. See Chapter 8. Remove and repair. See Chapter 8. Repair or replace. See Chapter 6 and Figure 9-5 and 9-6. Repair. See Chapter 6. Remove and install serviceable cylinder and repeat Functional Test. See Chapter 8 for inflation valve repair. Remove obstruction and proceed to leakage test. Replace Nylon gaskets or copper seals and leak test. See Chapter 5. Replace inlet valve. See Chapter 6. Leak test. See Chapter 5. Submit an Information Only Deficiency Report in accordance with TO 0035D-54 including the MAJCOM functional managers point of contact. Document the Information Only DR probable cause of failure in accordance with the appropriate troubleshooting tables. The Information Only Deficiency Report will be provided to the MAJCOM functional managers for possible corrective actions.

5-21

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 5.4.1.3 Leakage Test. To perform leakage test, proceed as follows:

•

•

If functional test was accomplished, ensure CO2 inflation assemblies are completely discharged to prevent a flying hazard and injury to personnel. Prior to leakage test, ensure a serviceable CO2 inflation assembly is installed. Refer to Chapter 7. Extreme caution/care must be taken during the testing to ensure that all connections are proper installed. Personnel must be protected to prevent injury. Cable shall be stowed inside snap cover of the cylinder sling and shall not be disturbed during leakage test to prevent an inadvertent inflation that could result in damage to equipment and injury or death to personnel. Personnel working with or near dangerous pressures must be protected by a safety shield or located at a distance sufficient to prevent injury. NOTE

•

•

Leakage test cannot be performed with carbon dioxide gas in life raft. Accurate temperature corrected pressure readings cannot be calculated with carbon dioxide gas.

•

Inflatable seat on LRU-1/P life raft may be tested simultaneously with stern section when bow section is deflated.

•

Soapy water is the preferred method of detecting leaks. Leak Test Compound, MIL-PRF25567 or equivalent may be used in lieu of soapy water. A leak detector may be used as an alternate method providing that the detector must meet or exceed ASTM E1002-93 and ASME requirements for leak detection.

a. 25-Man life raft - if Functional Test was performed, go on to step d. b. Using test fixture (Figure 3-9) or equivalent, inflate life raft to required pressure through (LRU-1/P and F-2B) or vent manifold assembly or topping off valve or manifold assembly (25-Man) using a suitable moisture and oil free air source, such as a vacuum cleaner or compressed air from a shop source which does not exceed 40 PSIG. Refer to Table 5-15.

For F-2B ensure inlet valve check elements have been removed. Refer to Chapter 4. Table 5-14.

Troubleshooting Improper Life Raft Inflation (25-Man)

Trouble Probable Cause Fails to inflate to design shape in Discharge valve assembly not fully 7 to 9 seconds. opened. Leaking jet pump. Low charge in cylinders. Pressure relief valve leaks. Topping-off valve in open position. Hole in life raft. Life raft partially inflates (one inflation tube only).

5-22

One cylinder empty or improper charge in cylinder. One discharge valve assembly not operating. Broken pressure hose.

Remedy Repair or replace valve. Refer to Chapter 8. Repair or replace pump. Refer to Chapter 6. Install properly charged cylinders. Repair or replace pressure relief valve. Refer to Chapter 6. Ensure all topping-off valves are dosed. Locate hole and repair in accordance with Chapter 6. Install properly charged cylinder. Refer to Chapter 8. Replace hose.

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 Table 5-14.

Troubleshooting Improper Life Raft Inflation (25-Man) - Continued

Trouble

Probable Cause Improper Maintenance.

c. LRU-1/P and F-2B - Place life raft on inspection test area in a horizontal position. Place attached cylinder and valve assembly on floor. (1) Remove cylinder and valve assembly and inspect in accordance with Paragraph 5.4.1.4 and Chapter 8. (2) Install locally fabricated equalizer tube clamp streamer (Figure 3-10 and Paragraph 3.8.3.2.1) to equalizer tube. Do not use equalizer clamps furnished with life raft for leakage test. (3) Disconnect air supply and check for leaks. Ensure that all valves are closed.

Remedy Submit an Information Only Deficiency Report in accordance with TO 0035D-54 including the MAJCOM functional managers point of contact. Document the Information Only DR probable cause of failure in accordance with the appropriate troubleshooting tables. The Information Only Deficiency Report will be provided to the MAJCOM functional managers for possible corrective actions. 9153 nylon gaskets at raft connection points for damage and proper positioning. (c) If manifold is removed, inspect manifold PN C-50980 copper seals at raft connection points for damage and proper positioning. (d) Ensure nylon gasket is not wedged in port between manifold and CO2 cylinder valve. (e) Close vent manifold and install locally-fabricated vent manifold streamer. Refer to Paragraph 3.8.3.2.1. (f) Install a serviceable cylinder and valve with applicable procedures. Refer to Chapter 7. (g) Ensure proper alignment of inflation system.

When installing manifold PN 9153, ensure that nylon gaskets are properly positioned; the two nylon gaskets with larger inside diameters are to be placed toward life raft. When reinstalling manifold PN C-50980, ensure copper seals PN A50969 are present and properly positioned around the setscrews on the outlets. Do not use nylon gaskets on the outlets. Do not use nylon gaskets on the outlets with manifold PN C-50980. NOTE Perform a pull test on vent manifold PN 9153 (refer to Paragraph 5.4.1.2, step k). (4) Life rafts utilizing vent manifold PN 9153 or C-50980. (a) If manifold is removed, rotate manifold coupling nut and check for freedom of movement to ensure that inner locking ring is not binding.

(h) Ensure coupling nuts are torqued 140 to 150 inlb. (i) Perform functional pull test and adjustment on PN 9153 vent manifold. Refer to Paragraph 5.4.1.2, step k. (j) Inflate life raft through topping-off valve. (k) To verify that inlet valve check elements have been removed from inlet valves, depress manifold poppet and ensure that air escapes. (If air does not escape, refer to Paragraph 4.3.6 for removal of inlet check elements). Close vent. Vent shall remain closed until life raft is installed in case/container. (l) Observe for signs of leakage. (m) If leak from outlet ports, install new gaskets on valve outlet ports and leak test.

(b) If manifold is removed, inspect manifold PN

5-23

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 d. 25-Man - Place life raft on inspection test area in a horizontal position. Place attached cylinder on floor. When installing valve assembly PN 9864-05, if plastic gasket does not sit securely on cylinder valve outlet ports after cylinder is installed, life raft may appear to leak around inlet valve. If inlet valve appears to be leaking, disconnect and reposition plastic gasket and repeat leakage tests. Accomplish this step prior to removing life raft for inlet valve repair. (5) Life rafts utilizing valve assembly PN 9864-05.

To prevent damage to cylinders and life raft, ensure the cylinders are adjacent to inspection surface. (1) Remove and cap (AN929-4) inflation assembly and inspect in accordance with Paragraph 5.4.1.4 and Chapter 8. Plug jet pump hose assemblies using AN804-4 plug.

(a) Install new gaskets on the valve outlet ports. (2) Inspect jet pumps as follows: (b) Before mating the inflation system to the life raft, install a locally fabricated streamer. Refer to Paragraph 3.8.3.2.1. (c) Wrap folded rubber tubing and nylon webbing assembly tight/taut around the diameter of the upper valve body encircling the vent holes (Figure 9-4, 50). (d) Install a serviceable cylinder and valve with applicable procedures. Refer to Chapter 7.

(a) Check screws for tightness on valve plate assembly. Torque screws to 20 to 30 inlb. (b) Check valve doors for proper closing. (c) Check body for cracks, sharp edges, and obstructions. NOTE All compartments shall be tested simultaneously.

(e) Inflate life raft through topping-off valve. Turn air source off and roll or remove the rubber tubing upward to expose the vent holes and listen for a distinct hissing sound of air from the valve assembly. The sound indicates that the self-venting characteristics of the valve assembly are working properly.

(3) Observe inflation; if life raft inflates properly, proceed to step e. (4) If life raft does not inflate properly, proceed as follows: (a) Shut off air source.

(f) The hissing sound verifies that inlet valve check elements have been removed from inlet valves, and ensure that air escapes. If air does not escape, refer to Paragraph 4.3.6 for removal of inlet check elements. (g) After the valve assembly vents properly, install and cover the vent holes again with the rubber tubing and nylon webbing assembly. Continue to inflate the life raft to required pressure. Refer to Table 5-15. (h) To facilitate the packing procedure, rubber tubing and nylon webbing assembly may remain installed until life raft is installed in case/container.

5-24

(b) Remove end plug of manifold and check for foreign matter in inlet ports by removing valve checks and springs. (c) Remove any foreign particles and wipe out any oily film. (d) Continue with leakage test. e. Allow 15 minutes for life raft pressure to stabilize. Using test fixture (see Figure 3-9) or equivalent, measure and adjust to required test pressure as necessary. Refer to Table 5-15. Time and temperature of test area shall be recorded at this time.

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 NOTE To make best use of available floor space, life rafts may be stacked while undergoing 4 or 6-hour leakage test period. Life rafts shall be unstacked prior to obtaining pressure readings. f. Six (6) hours after readjustment period, for 25-Man and four (4) hours after readjustment period for the F-2B and LRU-1/P pressure shall be measured and corrections for changes in temperature made. For each 1° F rise or drop in temperature, 0.031 PSIG shall be subtracted from or added to the final pressure reading to obtain the corrected pressure. Ensure life raft meets minimum pressure requirements as outlined in Table 5-15. NOTE Steps g through h shall be performed only after leakage test readings have been recorded.

bly. The pressure relief valve should close between 2.25 and 2.55 PSIG. (c) If pressure relief valve does not meet requirements, adjust, repair, or replace. Refer to Chapter 6. (2) Life raft assemblies prior to serial number 1092 are equipped with pressure relief valve PN 22C23627-1. To check operation, proceed as follows: (a) Slowly increase pressure in upper tube. The pressure relief valve shall open between 2.25 and 2.75 PSIG. (b) Slowly decrease pressure in upper tube. The pressure relief valve shall close between 1.75 and 2.25 PSIG. (c) If pressure relief valve does not meet requirements, adjust, repair, or replace. Refer to Chapter 6.

g. If pressure of compartment is below minimum pressure limits in Table 5-15, inflate to leakage test pressure and check for leaks. Apply soapy solution to topping-off valves and area where inlet valves enter life raft, manifold area, and any suspect areas of flotation tube. Inspect for damage, excessive wear, and corrosion.

(3) Repeat step 1 or 2 for lower tube.

h. Mark leaks, rinse with clear water, and dry with lintfree cloth, MIL-C-85043, Type 2.

(5) Remove/inspect inflation assembly in accordance with Paragraph 5.4.1.4 and Chapter 8.

i. Determine reparability in accordance with Chapter 6. Then repeat leakage test. Refer to appropriate troubleshooting tables.

k. LRU-1/P, F-2B: If no leaks are present, deflate through topping-off valves.

j. 25-Man: If life raft assembly meets pressure requirements, check operation of each pressure relief valve as follows: (1) Life raft assemblies with serial number 1092 and subsequent are equipped with pressure relief valve PN C18191-4C. To check operation, proceed as follows: (a) Lock one pressure relief valve using relief valve locking tool D19747-101, CAGE 70167, or equivalent, and slowly increase pressure in life raft assembly. The pressure relief valve should be open between 2.35 and 2.65 PSIG.

(4) If no leaks are present, deflate life raft through topping-off valves.

(1) LRU-1/P: inflate the deflated section and deflate the section just tested. Repeat leakage test. (2) F-2B: deflate through topping-off valves. NOTE If required, repair life raft. Refer to Chapter 6; then repeat leakage test. l. Lightly dust entire life raft with talc, MIL-T50036, Type T1, or A-A-59303 especially between folds and tube crotch seams. m. Update record in accordance with Paragraph 5.4.1.5 with the life raft either inflated or deflated.

(b) Slowly decrease pressure in life raft assem-

5-25

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 Table 5-15.

Test Pressures Life Raft Assemblies

Life Raft Type LRU-1/P

F-2B Life Raft assembly

Twenty-Five-Man Life Raft Assembly

Compartment Bow Section Stern Section Inflatable Seat Upper Tube Lower Tube Floor Support Tube Upper Tube Lower Tube Floor Support Tube

5.4.1.4 Inflation Assembly. To inspect inflation assembly, proceed as follows: NOTE •

Refer to Chapter 8 for more in-depth inspection procedures for cylinder and valve assembly.

•

Perform a Functional Test during the last scheduled inspection prior to hydrostatic test.

a. LRU-1/P and F-2B - Remove cover plate and make sure pull cable is routed around valve sheath for required (up or down) pull in accordance with Figure 8-10. (1) Inspect valve assemblies to ensure valve cover plate PN A128-9B has spring installed. NOTE Life rafts used in MA-1 and MA-2 rescue kits will have valve assembly PN A-128-RDB-HD installed on cylinder. (2) Re-install cover plate and make sure valve assembly is safety-wired in accordance with Paragraph 8.9.1. NOTE Diffuser need not be removed unless evidence of corrosion exists. (3) Ensure diffuser is tight.

5-26

Maximum Test Pres- Minimum Test Pressure (PSIG) sure (PSIG) 2 1.75 2 1.75 1 0.75 3 2.6 3 2.6 2 1.60 2 1.50 2 1.50 2 1.50

b. Check date of hydrostatic test. c. Examine inflation assembly for evidence of corrosion, wear, loose screws, and dents. d. For LRU-1/P, and F-2B weigh inflation assembly for proper charge. For 25-Man life raft, pressure check cylinder. Refer to Chapter 8 for proper charge. Inflation assemblies found undercharged or overcharged will be repaired in accordance with Chapter 8. e. Inspect cylinder markings. Re-mark as required in accordance with Chapter 8. f. For F-2B: when pull cable housing sleeve replacement is required and the replacement is from plastic to metal cable housing, add 0.06 pounds to charged weight. When the replacement cable housing is from metal to plastic cable housing, subtract 0.06 pounds from charged weight. Accomplish the weight calculations before determining proper charge. Weigh inflation assembly for proper charge. Refer to Table 8-1 for proper charge. Inflation assemblies found undercharged or overcharged will be repaired in accordance with Chapter 8. g. Check pull cable for broken or frayed wire strands and deformation. h. Annotate date of weight or pressure check, activity performing check and serial number or local control number of life raft on a 2 x 3 inch (approximately) strip of fiberglass adhesive tape, MIL-T-4053. Use a

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 blue or black ink ballpoint pen or stencil the appropriate information, using ¼ inch letters and black ink (AA-208, Type I or III, black) or black lacquer (TT-L50).

columnar form with earliest date on top. Date and type of inspection stenciled or stamped on life raft shall coincide with date and type of inspection recorded on applicable record cards. Variations of stenciling inspection data are authorized. The use of a contractor provided placard used for annotating date, activity, and type inspection may be used if altered to conform to approved methods (Figure 5-6). NOTE Data pertaining to organization, unit of assignment, or activity entered on AFTO/DD Forms of stenciled on life support/survival equipment could divulge the base, activity, or unit to which the item is assigned. This information may be omitted, deleted, or obliterated at the option of the MAJCOM. 5.4.2 Preflight/Screening Inspection. The Preflight/ Screening Inspection shall be performed by qualified fully trained personnel before issue or by a delegated aircrew member before flight. 5.4.2.1

Life Raft Assembly.

Cylinder and valve assembly or Inflation assemblies are under pressure; do not attempt to remove valve assembly from cylinder. To perform preflight or screening inspection on life raft assembly, visually inspect for the following: a. Fabric for cuts, tears, punctures, deterioration, abrasion, stains, dirt, and general cleanliness. b. Case for proper adhesion and stitching. Figure 5-6.

Stenciling Inspection Data on Life Rafts

5.4.1.5 Records Updating. Upon completion of inspection and testing, the date, activity performing inspection and testing and type of inspection shall be stenciled or stamped on life raft. For the F-2B life raft, stencil or stamp data on life raft or underside of tube, to left of carbon dioxide cylinder. For the LRU-1/P and 25-Man life raft, stencil or stamp data on life raft on the underside of tube, to the left or the right of the cylinder. Use applicable ink (white, black or blue) of a contrasting color and appropriate letter. For example: 365/450 Day, Special, and if a Functional Test was performed (Figure 5-6). This record is required to determine the date of the next Functional Test. The size of the lettering shall not be less than ¼ inch nor more than ½ inch in height. Previous dates shall not be removed or obliterated. When date and type of inspection are stenciled or stamped, but are illegible, obliterate and reapply. Dates shall be arranged in

c. Seam for proper attachment. d. Straps and handles for security and wear. e. Hardware for security of attachment, corrosion, damage, wear and, if applicable, ease of operation. f. Safety-ties for security. g. Markings for legibility and correctness. Refer to appropriate tables. h. Any other part for wear, damage, and security. i. DD Form 1574 entries for correspondence with appropriate 300 series AFTO Forms.

Change 1

5-27

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 5.4.2.2 MA-1 AND MA-2 SEA RESCUE KITS. To preflight MA-1 and MA-2 sea rescue kits, proceed as follows:

g. Ensure periodic inspection date is current.

NOTE

h. Inspect night locator lights for operation and proper installation. Refer to Chapter 7.

Stowage and tie-down of rescue kits in the aircraft prior to immediate use shall be at locations in the aircraft which have been predetermined by the using command.

i. Within the aircraft, check required number and condition of retaining harnesses and that adequate and required number of pyrotechnics and water-tight message containers are present.

a. Observe the condition of the supply container, life raft, and static line assembly for any visible defect or deterioration, and for oil or grease stains likely to affect contents. b. Markings for legibility and correctness. Refer to appropriate tables. c. Open static line protection flap and check static line for any damaged or weak spots and for security. d. Ensure static lines on kits used on HC-130H/P aircraft are marked with tape at the 5 foot point. Refer to Chapter 7. e. Check that all supply containers and life rafts are tied together in the correct manner when kits are stored or mounted. f. Inspect all snap fasteners and connecting rings to ensure that they are properly color-coded.

5.4.2.3 25-Man Case. To preflight the 25-Man case, visually inspect for the following: a. Cracks, punctures, and crushed plastic. b. Stains, dirt and general condition. c. Straps and handles for security of attachment, corrosion, damage, wear, and ease of operation. d. Safety-ties for security. e. Markings for legibility and correctness. Refer to Table 5-16. f. Any other parts for wear, damage, and security. g. DD Form 1574 entries for correspondence with appropriate 300 series AFTO Forms.

SECTION III SURVIVAL ITEMS AND ACCESSORIES 5.5

INSPECTION REQUIREMENTS.

All life raft survival items and accessories shall be inspected concurrently with life raft inspections. However, they shall not exceed established inspections intervals in accordance

5-28

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 over and attach to the outside of the top flap. Press the tape together, forming two (2) pull tabs facing each other.

with applicable technical order. NOTE •

Refer to Chapter 1 for service/shelf life.

•

The selection of additional or removal of items to complete the kit will be left to the discretion of MAJCOM.

•

MAJCOM may authorize the installation/location of additional survival items and accessories through their operational instructions. Applying practical principle and a disciplined engineering process as outlined in AFI 63-1201, Assurance of Operational Safety, Suitability and Effectiveness (OSS&E) must support the authorization.

•

There will be no duplication of items in the survival kit and vest when used together without approval of the MAJCOM.

5.5.1 Survival Items. To inspect survival items, remove from containers and check inventory against appropriate table in Chapter 7 and inspection record. Operate all items which are not expended in use. Inspect all items for damage, spent contents, and expired service life. Replace as necessary. NOTE •

•

•

Items which are in sealed containers, vacuum packed, or hermetically sealed, shall not be opened for inspection unless deterioration is suspected. At the option of the MAJCOM, accessories/ survival items that may be prone to spillage or become unserviceable due to moisture may be placed in an interlocking polyethylene bag. Remove air from bag before sealing. MAJCOM OPTION: To facilitate the opening of interlocking polyethylene bags, form two (2) pull-tabs of nylon filament tape, A-A-1686, Type I, 1 inch or equivalent. Then length and location of the pull-tabs may vary to accommodate the unit’s mission. Zip the bag closed. Cut two (2) pieces of tape approximately 3 inches in length. Attach one piece of tape inside the top flap (Just above the seal) approximately 1-3/4 inch from the end of the bag, fold the tape over and attach to the outside of the top flap. Press the tape together. Attach the second piece of tape to the other top flap (just above the seal) opposite the first pull tab, fold the tape

•

MAJCOM OPTION: Place the emergency or similar components (i.e. radio, flares) in a 12 inch interlocking polyethylene bag with pull tabs 1½ inches in length. Mark the bag “Signaling Devices” and outline with reflective tape, L-S-300, Type I, Class 3, or ASTM D4956, 2 inch or equivalent for quick identification. The bag containing the signaling devices will be placed in the middle of the inner container on top of the other components.

a. Inspect first aid kit in accordance with TO 00-35A-39. b. Inspect fishing kit for damage and evidence of tampering/pilferage. Kit shall be replaced if damaged or incomplete. c. Inspect desalter kit in accordance with TO 14S1-4-22. d. Inspect Manual Reverse Osmosis Desalinators in accordance with TO 40W4-15-1 and TO 40W4-16-1, as required. All other components will be inspected for general serviceability and condition. If the item is commercially procured, refer to the manufacture’s literature and manuals for additional inspection requirements. e. Inspect life raft repair kit as follows: (1) Check pliers for corrosion and ease of operation. (2) Screw wing nut down firmly by hand and then tighten nut an additional ½ to ¾ turn to check operation. (3) Check welds for security. (4) Check wing nut for cross-threaded or damaged thread. (5) Unscrew wing nut and leave loose. (6) Check rubber for deterioration. (7) Check metal surfaces for corrosion. (8) Ensure serviceable retention cord is attached. To replace cord use approximately 16 to l8 inches of cotton braided water repellent cord, MIL-B-371, Type IV, Class 4 or equivalent; color optional.

5-29

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 Fashion cord by inserting length of cord through looped end of stem, bring cord ends together and tie with a single binders knot. Wax or sear ends.

(5) Check fitting for wear and corrosion. (6) Attach distillation kit adapters to pump hose in any suitable fashion.

NOTE Repair kit will not be dipped in wax. Repackage repair plug(s) and pliers if equipped with heat seal barrier cloth or equivalent and seal. (9) Legibly mark waterproof container with “LIFE RAFT REPAIR KIT”, using waterproof ink. f. Inspect survival radios and beacons in accordance with 31R series technical orders. g. Inspect flares in accordance with 11A series technical orders. Ensure date of installation and lot number markings are legible and coincide with data on inspection records. h. Inspect survival rations in accordance with TO 14S13-51. i. Inspect water containers in accordance with TO 14S13-51. j. Inspect signal mirror in accordance with TO 14S1-351. k. Inspect floating knife for corrosion or damage. If defective, replace. l. Inspect compass in accordance with TO 00-110 series, FM 3-25.26, Chapter 9, and TO 14S1-3-51 technical orders. m. Inspect survival manual to ensure legibility and currency in accordance with http://www.e-publishing.af.mil. Replace if out-of-date or mutilated. n. Inspect pump and hose as follows: (1) Operate pump to ensure it delivers air. (2) Close outlet; apply pressure and check seal of piston. (3) Blow into outlet to determine if check valve will seat. (4) Check to ensure hose fittings can be attached to topping-off valve.

5-30

Change 1

(7) If any defects are found, replace pump, hose, or fittings. o. Inspect sun-protective ointment as follows: (1) If packaged in a 6 inch mailing tube, check for cracks, crushing, and sealing of tube ends with tape. (2) If packaged in metal container, check for leakage. (3) Replace if any defects are noted. p. Inspect strobe light/distress light marker in accordance with TO 14S10-2-2. q. Inspect and test strobe light/distress light marker in accordance with TO 14S10-2-2. r. Inspect two-piece water-activated light as follows: (1) Disconnect battery cell from lamp unit. (2) Connect multi-meter leads to the lamp unit and check for continuity. (3) Replace lamp unit if continuity check is negative. (4) With multi-meter set at the lowest possible direct current (DC) voltage scale, connect meter leads to battery terminals: meter shall register no voltage. (5) Replace battery if meter registers voltage. (a) If digital meter is used, it will be set to read DC volts. (b) Batteries registering 0.005 volts or above will be replaced with new batteries. (6) Inspect battery case. If battery is swollen or cracked, replace battery.

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 NOTE At the option of the MAJCOM, prevention of plug separation from water-activated light assemblies may be aided by wrapping two turns of anti-seize tape, MIL-T-77730A, size II or I, or A-A-580092 around plug and light assembly.

with chemicals will be trained to develop a thorough knowledge of all chemical characteristics, hazard and significance of contamination. (1) Visual inspect package for broken (cuts, tears) or leaking indicative of deterioration of material. (2) Good housekeeping will be practiced at all times. Spills and leaks will be promptly cleaned up and the area decontaminated.

(7) If applicable, ensure that water activated light expiration date has not expired or will not expire during the next repack. Refer to Paragraph 1.4.1.

(3) Package exhibition visual defects will be identified, segregated and properly dispose according with local procedures. If technical assistance in cleaning spills and leaks is required refer to your local HAZMAT office or Base Bio-Environmental Engineer according to locally developed procedures. Each base organization is responsible to ensure proper storage facilities are provided and maintained. Personnel will be trained in handling the material in accordance with applicable safety, environmental regulations and associated Material Safety Data Sheet (MSDS).

s. Inspect the one-piece water-activated light as follows: (1) Inspect battery case. Replace light assembly if battery is swollen or cracked. (2) Visually inspect the two water entry holes of the battery for internal corrosion. Replace light assembly if there is visual evidence of broken down particles or foreign matter coming out of the water ingress/egress ports. (3) The shelf and service life of the L8-4 battery is unlimited as long as it passes the visual inspections. The service life of the L8-3 is five years from DOM and will be stamped on the case of the battery. Replace the L8-3 battery if the expiration date is missing or illegible. NOTE •

•

Other variations of the survival light are acceptable as long as they are approved TSO-C85 or TSO-C85A lights. Follow the manufacturer’s battery shelf/service life recommendations and Paragraph 1.4.1. At the option of the Majcom, prevention of plug separation from water-activated light assemblies may be aided by wrapping two turns of anti-seize tape, MIL-T-77730A, size II or I, or A-A-580092 around plug and light assembly.

5.5.2 lows:

Accessories. To inspect accessories, proceed as fol-

a. Inspect canopies/tarpaulin assemblies as follows: (1) Spread out the canopy/tarpaulin and ensure item is free of rips, mildew, peeling, adhering surfaces, and corroded grommets. (2) If any discrepancy is noted, replace or repair. Refer to Chapter 6. b. Inspect canopy mast as follows: (1) Ensure sections can be joined together. (2) Inspect for missing rubber ring, clamps and cork. (3) Ensure mast is not bent or distorted.

t. Inspect whistle in accordance with TO 14S1-3-51. c. Inspect canopy support rods as follows: u. Sea Dye Marker. Inspect sea dye marker with appropriate technical order, local directives associated with handling, storing, disposing, and inspecting of chemicals to include but not limited to the following: NOTE MAJCOMs are responsible for ensuring that the personnel have received the proper training. Personnel assigned to perform the tasks associated

(1) Ensure all rods are matched and fit canopy holes. NOTE Do not cover the canopy rod sockets with tape or other obstructions. (2) Ensure anchor wire is serviceable and functional.

Change 2

5-31

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 (3) Ensure rods are not bent, distorted and missing cork. (4) Replace if necessary. (5) Secure all rods together with rubber bands, No. 32 or equivalent. d. Inspect oars as follows: (1) Check for interchangeability of sections. (2) Check for rough or sharp edges along top portion of paddle section. Use common file to round off sharp edges. (3) Ensure reflective tape is secure. (4) Replace if necessary.

(5) Wrap oars separately in brown wrapping paper and secure with rubber bands, No. 32 equivalent. e. Inspect containers as follows: (1) Check fabric for cuts, tears, punctures, deterioration, abrasion, stains, dirt, and general cleanliness. (2) Check markings for legibility and accuracy. (3) If any discrepancy is noted, replace or repair. Refer to Chapter 6. f. All time change survival items installed in the survival kits will be annotated on the appropriate 300 series AFTO Form and the DD Form 1574. Annotation will include, if applicable: nomenclature of item, item serial number, lot number, date of manufacture and date of expiration.

SECTION IV LPU-6/P, LPU-3/P, LPU-10/P, AND A-A-50652 LIFE PRESERVER ASSEMBLIES 5.6

INSPECTION REQUIREMENTS.

The LPU-6/P, Infant’s Floating Survival Cot, A-A-50652 (Commercial) Life Preserver, Adult/Child, LPU-3/P and LPU-10/P, Life Preserver Assembly (Aircrew), inspection requirements follow:

•

Failure to comply/complete proper donning/fitting procedures could result in personal injury to the crewmember. Refer to Chapter 2.

•

Life preserver that requires an inflation assembly during a leakage test will not be removed after the leakage test. Leakage test will be accomplished with the inflation assembly attached to the life preserver. This is to ensure that the inflation assembly is checked for proper installation. If the inflation assembly is removed for

5-32

Change 2

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 any reason perform the leakage test again.

•

•

Inspection and test areas must be smooth, free of splinters, sharp projections, and oil stains. Areas with abrasive characteristics shall be covered. Do not open any sealed or safety-tied portions of preserver. NOTE

•

Life Preservers LPU-1/P, LPU-5/P, MB-1, MD-1 are obsolete and should be substituted/ replaced (at attrition) with A-A-50652 (Commercial) Life Preserver Assembly.

•

Minor repairs are limited to restitching of webbing/straps and installation of buckles and similar hardware (salvageable) from condemned like units.

•

Minor repairs are allowed to buoyancy chambers. Leak test after repair and inspect repair for proper operation, easy of movement and for serviceable condition.

•

Equipment will be removed from service if any doubt of serviceability exists.

•

Restore faded markings with waterproof ink.

•

Any evidence of failure of inflation assembly system of any one preserver shall be justification for performing a Special Inspection on all other preservers within subject lot.

•

Carbon dioxide inflations shall not be accomplished on any one cell more than once each year, except when a Special Inspection was required, since repeated carbon dioxide inflations can induce leakage due to cold-cracking of the cell fabric.

c. A Functional Test will be performed on 5 percent of those preservers being tested (disregard fractions in computing quantities) or one preserver (to include both cells), whichever is greater. (1) If Functional Test is required, do not remove inflation assembly; refer to appropriate paragraph.

a. All life preservers and accessories will receive a screening Inspection immediately after receipt from supply and during Periodic Inspection. Inspect all items for service life (Refer to Chapter 1). Replace as necessary. NOTE A Preflight Inspection shall be accomplished before each over water flight by aircrew to whom the life preserver is assigned. MAJCOMs may establish procedures to ensure adequate inspection of equipment is accomplished. b. Life preservers will be given a Periodic Inspection at the initial installation and periodically at intervals not to exceed (1) one year plus or minus 10 days of established interval. Accessories shall be inspected concurrently with the life preserver inspection, however; they shall not exceed established inspection intervals in accordance with applicable technical order. Periodic and functional inspections are identical procedurally with the exception of inflation methods. If condition of life preserver is doubtful, perform periodic inspection sooner, as needed.

Change 2

5-32.1/(5-32.2 blank)

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 (2) If Functional Test is not required, disconnect actuating line or lanyard assemblies from each cable port in valve assembly, remove inflation assembly and perform leakage test; refer to appropriate paragraph. 5.6.1

(10) Any other parts for wear, damage, and security of attachment. (11) All hardware for security of attachment, corrosion, damage, wear and, if applicable, ease of operation.

Periodic Inspection. NOTE

5.6.1.1 Visual Inspection. Visually inspect life preserver assembly for the following: a. Inspect case/container for the following: NOTE All LPU-3/P cell containers PN 58J3590-1L, manufactured by Cline and Associates on contract F4160875C-0927, with fasteners identified by a large G, will be removed from service. (1) Proper configuration. Refer to Chapter 4. (2) Inspect exposed metal parts for corrosion and damage, and if applicable, ease of operation. Minor surface corrosion on hardware may be removed with a soft bristle wire brush. (3) If accessible, inspect survival items for presence, security of attachment and, if applicable, operation. (4) If applicable, inspect case fabric for cuts, tears, abrasions, security of stitching, or other damage. (5) Inspect safety-ties on release pins, lanyards on carrying case, and (if accessible) inflation assemblies. (6) Inspect assembly for stains, dirt, and general cleanliness. (7) Inspect hook and pile fasteners. (a) When the two pieces are overlapped and pressed together, the hooks grip the loops. The two pieces will cling together until they are pulled apart. (b) If the fastener loses its clinging ability, remove lint and debris that gets caught in the hooks and loops.

(10/P) Fasten waist strap to hold cell containers in position; hold buckle at an angle of approximately 90-degrees with respect to clip, and insert curved end of clip into slot of buckle. If curved end of clip can be inserted into buckle slot without assuming a 90-degree angle, tap curved portion with a hammer until a 90-degree angle has to be attained before waist strap can be fastened. This is essential for prevention of inadvertent release during emergencies. (12) Marking for legibility and correctness. Refer to appropriate tables. Restore faded markings. NOTE All markings shall be stamped or stenciled with waterproof black ink. All words enclosed by brackets in the column headed Marking shall not be stenciled on the equipment; they are to be regarded as instructions only. (13) On 3/P and 10/P case containers, inspect the length of carbon dioxide cylinder retaining lanyard as follows: (a) Lanyard length shall be 4-½ +¼ - 0 inch measured from carbon dioxide pocket (top edge) in center of pull-the-dot fastener. If 4 inch lanyard is sufficient length to snap in place, no modification is required. (b) Lanyards exceeding maximum length shall be altered in accordance with Paragraph 4.8.10. (14) Check that DD Form and AFTO Form entries are complete, accurate, and correspond. NOTE If any discrepancy is noted, the preserver shall be removed from service and repaired. Refer to Chapter 6.

(8) Check seams and seam tapes for proper adhesion or stitching. (9) Check straps and loops for security, fraying and wear.

5-33

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 Table 5-16.

LPU-6/P Infant’s Survival Cot Case/Container Markings

Marking BABY’S OR INFANT’S FLOATING SURVIVAL COT [stencil applicable noun] TYPE LPU-6/P PN [stencil applicable number] STOCK NO. [stencil applicable number] [stencil name of manufacturer] CONTRACT NO. [stencil applicable number] USAF BABY’S OR INFANT’S FLOATING SURVIVAL COT [stencil applicable noun] TYPE LPU-6/P PN [stencil applicable numbers] STOCK NO. [stencil applicable number] [stencil name of manufacturer] CONTRACT NO. [stencil applicable numbers] DATE OF MANUFACTURE [stencil month and year] U.S. ORAL VALVE - TO INCREASE PRESSURE, UNSCREW KNURLED RING, PUSH VALVE MOUTHPIECE DOWN WITH MOUTH AND BLOW THRU TUBE. JERK BACK KNOB TO INFLATE

Location On main panel of case.

Letter Height ¼ inch

Rear panel of canopy.

¼ inch

Front of canopy, above oral valve.

¼ inch

Front of canopy, above inflator assembly.

NOTE All markings shall be stamped or stenciled with ink of contrasting color, all words enclosed in brackets in the column headed “Marking” shall not be stenciled on the equipment; they are to be regarded as instructions only. Due to varying manufacturers, the wording or arrangement of factory stamped markings may differ from what is listed in Table 5-16, but is permissible as long as it meets the intent of what is listed.

Table 5-17.

LPU-3/P and LPU-10/P Life Preservers Case/Container Markings

Marking LIFE PRESERVER, UNDERARM, PNEUMATIC LPU- [stencil applicable type] MIL-L- [stencil applicable number] MANUFACTURER’S IDENTIFICATION [stencil name of manufacturer] CONTAINER PART NO. [stencil applicable number] CONTRACT OR ORDER NO. [stencil applicable number] DATE OF MANUFACTURE [stencil month and year] Size Markings (Optional)

Location Letter Height On label attached to container. 1/8 inch

Each shoulder strap.

½ inch

NOTE All markings shall be stamped or stenciled with ink of contrasting color, all words enclosed in brackets in the column headed “Marking” shall not be stenciled on the equipment; they are to be regarded as instructions only. All markings of 1/8 inch in height may be hand scribed use a permanent pigmented waterproof ink pen.

5-34

Change 1

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 Table 5-18.

LPU-3/P and LPU-10/P Cell Markings

Marking PART NO. [stencil applicable number] MANUFACTURER’S IDENTIFICATION [stencil name of manufacturer] CONTRACT OR ORDER NO. [stencil applicable number] DATE OF MANUFACTURER [stencil month and year] SERIAL NO. [stencil applicable number]

Location Each flotation.

Letter Height 1/8 inch

NOTE All markings shall be stamped or stenciled with ink of contrasting color, all words enclosed in brackets in the column headed “Marking” shall not be stenciled on the equipment; they are to be regarded as instructions only. All markings of 1/8 inch in height may be hand scribed using a permanent pigmented water proof ink pen.

Table 5-19. Trouble Preserver does not inflate properly.

Troubleshooting Improper Life Preserver Inflation Probable Cause Remedy Improper charge or empty carbon dioxide Replace with new cylinder(s). cylinder(s). Restriction of inflation valve puncturing Replace inflation valve. pin(s) allowing release of carbon dioxide. Inlet valve obstruction. Remove inflation valve and ensure inlet valve is free of any foreign matter. Discrepant inflation valve. Replace valve. Valve Stem Leaks. Replace valve core. Porous Area. Repair. Refer to Chapter 6.

b. Inspect cell for the following: (1) Proper configuration. Refer to Chapter 4. (2) Fabric for cuts, tears, punctures, deterioration, abrasion, stains, dirt, and other damage. (3) Inspect hook and pile fasteners. When the two pieces are overlapped and pressed together, the hooks grip the loops. The two pieces will cling together until they are pulled apart. If the fastener loses its clinging ability, remove lint and debris that gets caught in the hooks and loops. (4) Seam tapes for proper adhesion. (5) Valve inlet stems for security. Ensure valve core is shut tight, but not over tightened. (6) Oral inflation valve(s) for cracks, security of attachment, ease of operation, and evidence of corrosion.

(7) Patches for proper adhesion and wear. (a) Inspect manufacture’s patches for lifting, separation, or delamination around the outer edge of the patch. Do not forcibly lift edge or peel patch. (b) NO REPAIR allowed. Remove from Service and condemn. (8) Pockets for proper adhesion, stitching, wear, cuts, or other damage. (9) Straps and loops for proper adhesion stitching and fraying. (10) Any other parts for wear or other damage. (a) Inspect LPU-6/P transparent window for cracks, holes and abrasions. If damaged, replace window. Refer to Chapter 6.

Change 1

5-35

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 (b) Inspect LPU-6/P Securing Straps for approximately 17 to 19 inches in length. Refer to Chapter 6. (11) All hardware for security of attachment, corrosion, damage and wear. (12) Cross-threaded or loose inflator cap nut(s). (13) Stains, dirt, and general cleanliness. (14) Hook and pile tape not stitched to cell for proper adhesion as follows: NOTE At each Periodic Inspection, cells with hook and/or pile tape attached directly to cell shall be pulltested to ascertain security of attachment. (a) Attach spring scale or a piece of 8/4 cotton thread V-T-276, Type V or A-A-52094 directly to hook or pile tape. (b) Gradually pull tape at a 90-degree angle away from flotation cell until a force of 10 to 12 lbs. is reached on scale or cord breaks. (c) If hook or pile tape pulls away, replace in accordance with Paragraph 4.8.7. (15) Markings for legibility and correctness. Refer to appropriate tables. Restore faded markings. NOTE All markings shall be stamped or stenciled with waterproof black ink. All words enclosed by brackets in the column headed Marking shall not be stenciled on the equipment; they are to be regarded as instructions only. (16) Check DD Form and AFTO Form entries are complete, accurate and correspond. NOTE If any discrepancy is noted, the preserver shall be removed Service and repaired. Refer to Chapter 6. 5.6.1.2 Functional Test. To perform Functional Test, proceed as follows:

Inspection and test areas must be smooth, free of splinters, sharp projections, and oil stains. Areas with abrasive characteristics shall be covered.

5-36

NOTE Functional Tests will be accomplished with cylinder(s) which is/are attached to life preserver to determine serviceability of inflator. a. Place life preserver on inspection test area. b. Actuate inflation assembly(ies). c. Ensure life preserver fully inflates to design shape without evidence of restriction. d. Determine cause if life preserver does not properly inflate. Refer to Table 5-19. e. If improper inflation is due to cylinder and valve, install a serviceable cylinder and valve and repeat functional test. If improper inflation is due to damage on life preserver, repair. Refer to Chapter 6. Leak test. f. After passing Functional Test, remove cylinder(s) and deflate life preserver using a vacuum source as follows: NOTE To prevent expansion of trapped air, ensure cell(s) have been thoroughly evacuated. (1) A-A-50652 - Use vacuum source with end of hose attached to deflation adapter. See Figure 3-6. (2) Unlock oral inflation valve, hold in open position, and hold vacuum pump hose against end of oral inflation valve. When compartment has collapsed, release oral inflation valve. ((A-A-50652), Remove deflation adapter). Screw lock closed on all preservers. g. Perform leakage test in accordance with Paragraph 5.6.1.3. 5.6.1.2.1 Life Preserver Condition. When visually inspecting life preserver condition, the preservers shall be inflated with filtered and dehydrated air or bottled nitrogen to 2 PSIG. 5.6.1.2.2 Life Preserver Configuration. Life preservers contain features which must be included on the applicable life preservers. If features are missing, they must be incorporated in accordance with the updating configuration section of the applicable equipment chapters.

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 5.6.1.2.3 Markings Inspection. To inspect and restore markings, proceed as follows:

Quantity As Required

Material Required Description Part Number White Ink A-A-208, Type II Black Ink Yellow Ink

MIL-I-6903, Type IV MIL-I-6903

a. Compare markings of life preserver assembly to those listed in Table 5-16 through 5-20. b. Restore any faded or missing markings, if known. c. Paint over incorrect markings using black ink. d. Add correct markings as close as possible to specified location using white ink. e. Use contrasting color ink on cells. 5.6.1.3 Leakage Test. To perform leakage test, proceed as follows:

b. If Functional Test was not performed, loosen setscrew and remove carbon dioxide cylinder. c. Inflate cell(s) as follows: (1) Ensure all carbon dioxide has been removed from any life preserver that has been functionally tested. NOTE To inflate preservers, use suitable air source, such as a vacuum cleaner, or air from shop source (compressor, etc.) which does not exceed 5 PSIG. Ensure air is moisture and oil free (filtered and dehydrated). (2) Unlock oral inflation valve, attach air source to test fixture (Figure 3-5), and allow cell to fill with air to a pressure of 2 PSIG. NOTE LPU-3/P and 10/P require installation of a discharged cylinder. This prevents leakage. The discharged cylinder should be painted red. To measure pressure, use a pressure gauge PN P633. (3) LPU-3P and 10/P require the installation of a discharge cylinder. This will prevent leakage. Mark discharged cylinder as follows:

A high pressure carbon dioxide cylinder is installed. Handle carefully to prevent inadvertent activation.

Inspection and test areas must be smooth, free of splinters, sharp projections, and oil stains. Areas with abrasive characteristics shall be covered. NOTE •

Leakage Test cannot be performed with carbon dioxide gas in life preserver. Accurate temperature corrected pressure readings cannot be calculated with carbon dioxide gas.

•

Soapy water is the preferred method of detecting leaks. Leak Test Compound, MIL-PRF25567, or equivalent may be used in lieu of soapy water. A leak detector may be used as an alternate method providing that the detector must meet or exceed ASTM E1002-93 and ASME requirements for leak detection.

a. If Functional Test was not performed, open life preserver case/container and spread out cell.

DO NOT allow tip of heat gun to come in contact with personnel, insulation sleeve (heat shrink) or discharged cylinder. It becomes extremely hot and can cause injury to personnel and damage to equipment. (a) The discharged cylinder should be painted red. MAJCOM OPTION: As a preventive safety measure, the discharged cylinder may be wrapped approximately 15 to 20 turns with duct tape, A-A-2231, 2 inch equivalent to center of cylinder. (b) After tape is applied, cut approximately 4-5 inch piece of (red) insulation sleeve (heat shrink), MIL-I-23053/5 or equivalent and shrink with a heat gun. To measure pressure, use a pressure gauge PN P633. d. Allow 15 minutes for pressure to stabilize; readjust pressure to 2 PSIG if necessary. Temperature of test area shall be recorded at this time.

5-37

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 NOTE

valve. When compartment has collapsed, release oral inflation valve. A-A-50652 - Remove deflation adapter. Screw lock closed on all preservers with the exception of LPU-3/P and 10/P preservers.

The lever of the FLU-1/P inflator must be in the fired position to prevent air venting from cell. (1) Move the lever of the FLU-1/P inflator forward and backward, simultaneously bringing lateral force to the lever. (2) If the FLU-1/P inflator leaks, replace inflation valve. e. Six hours after the readjustment period, the pressure shall be measured and corrections for changes in temperature made. For each 1° F rise or drop in temperature, 0.031 PSIG shall be subtracted from or added to the final pressure. Ensure test item meets 1.50 minimum pressure requirements. f. If pressure of cell is below 1.50 PSIG, inflate to test pressure and check for leaks as follows: (1) Apply soap solution to cell and inflation valve to locate leaks. (2) Mark areas that leak, rinse cell with fresh water, air dry and repair. Refer to Chapter 6.

5.6.1.5

a. LPU-3/P and 10/P- On initial installation, ensure valve core has been removed as follows: (1) Remove inflator assembly cap nut. (2) Check valve stem for installation of valve core. (3) If valve core is present, remove with valve core tool and discard. b. Ensure seat seal gasket(s) is/are installed. If missing, install replacement gasket(s). c. Ensure gaskets are installed on cell stem. Replace if missing or damaged. NOTE •

Install new gaskets with the smaller inside diameter gasket between the cell and the inflator assembly and the larger inside diameter gasket between the inflator assembly and the retainer unit.

•

Inflators utilized on LPU-6/P life preservers that do not have a gasket will have entire inflation assembly replaced.

(3) Replace inflation valve if necessary. (4) If beyond capability of maintenance, life preservers shall be condemned. g. After passing leakage test, if applicable, remove red discharged cylinder. 5.6.1.4 Deflation of Life Preserver. Deflate life preserver remove cylinders and deflate by using a vacuum source as follows: NOTE

Inspect Inflation Assembly as Follows.

d. Examine inflation valve, actuation lever, and lanyard for fraying, corrosion, or other damage. Remove any metal shavings remaining from removal of carbon dioxide cylinder. e. Perform operational check as follows:

•

To prevent expansion of trapped air, ensure cells have been thoroughly evacuated.

(1) Slowly move actuation lever through a normal cycle to ensure freedom of operation.

•

Adapter may have to be fabricated locally for the A-A-50652 (commercial) life preserver. See Figure 3-6.

(2) Ensure piercing pin has sufficient movement to puncture carbon dioxide cylinder. In the unoperated position, the piercing pin is slightly below mating surface of inflator body.

a. A-A-50652 - Use vacuum source with end of hose attached to deflation adapter (Figure 3-6). b. Unlock oral inflation valve, hold in open position, and hold vacuum pump hose against end of oral inflation

5-38

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 NOTE Piercing pins of earlier model FLU-1/P inflators were positioned slightly above body housing. These items are considered serviceable when cylinder is installed in accordance with Paragraph 5.6.1.6, step c and no indication of contact with piercing pin is evident.

(2) Tie off ends with a surgeon’s knot followed by a single overhand knot. See Figure 5-7.

f. If any discrepancy is noted with inflator valve, removing cap (hex) nut. Replace with new valve and new gasket. Reinstall the chaffing guard over manifold stems. Torque the hex nut to 25 ±1 inlb by using 9/16 inch socket. NOTE When either of the cells or the MA-1 inflator used on the LPU-2/P life preserver assembly needs replacing, order both right cell, PN 58K3588-4 and left cell, PN 58K3588-3, plus the FLU-1/P inflator; reidentify as an LPU-10/P life preserver assembly. Supply records should be modified accordingly. g. Inspect inflator inlet valve gasket for any signs of damage/deterioration. If damaged or deteriorated, install new gasket, PN 58A3567. On commercial Life preserver PN A-A-50652 install new gasket, PN 849AM or equivalent. h. Safety tie inflation valve as follows: NOTE FLU-1A/P inflator assemblies do not require safety-tying due to design of inflator casing. (1) A-A-50652 Life Preserver - inflator assembly and FLU-1/P inflator assembly will use a single length of nylon thread, V-T-295, Type I, Class A, Size A. Pass thread through hole in inflation valve body and through hole of lever.

Figure 5-7.

Inflation Valve, Safety-Tie

5.6.1.6 Installation of Cylinders. To install cylinders, proceed as follows: a. Weight-check carbon dioxide cylinders before installation into inflators. Cylinders weighing less than gross weight marked on cylinder will be removed from service and condemned or used for training purposes in accordance with Paragraph 1.2.

5-39

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 NOTE Weight will vary according to manufacturer. Scale/ dial scale calibrated in grams can be used for weight-checking carbon dioxide cylinder. b. Check carbon dioxide cylinder markings for legibility as follows:

lation of cylinder, use thread chaser die on cylinder thread to cut free excessive plating. Reinstall cylinder. If binding still occurs, replace cylinder. e. If threads are obstructed or damaged, using the cylinder thread chaser die, turn the die to the full extent of the threads on the CO 2 cylinder to cut free any excessive plating covering the threads.

(1) Those cylinders on which the weight marking shows wear will be re-marked with black or dark blue ink, A-A-208, Type I or III, black. (2) When ink dries, marked area will be coated with a compatible clear lacquer. (3) The markings shall consist of legible and durable numerals and letters not less than 1/8 inch to indicate the necessary information. All markings of 1/8 inch in height may be hand scribed using a permanent pigmented waterproof ink pen.

DO NOT over tighten the cylinder against the gasket. This can crush the gasket allowing the cylinder to go in too far. This may cause a “pin sticking” condition causing the firing pin to stick and not retract. DO NOT under tighten the cylinder against the gasket. This can cause the firing pin not to make contact with the cylinder. c. Install cylinder as follows: Reset actuation arm lever to unfired position prior to installing unused cylinders. (1) Verify that the inflator inlet valve gasket has been inspected/replaced before installing cylinder into valve. Hand tighten cylinder until the cylinder makes initial contact with the gasket, then tighten cylinder an additional ¼ turn. (2) Tighten setscrew. d. The threaded portion of the cylinder neck shall contain a minimum of seven full threads to assure a firm cylinder seat within inflator body. Any cylinder with less than seven full threads shall be discarded. Refer to Figure 5-8.

Steel threads on CO2 cylinder can cause damage to aluminum threads on inflator if cylinder is not carefully threaded. If binding occurs during instal-

5-40

Change 1

Figure 5-8.

Cylinder Thread Count

5.6.1.7 Survival Items. Inspect survival items in accordance with Paragraph 5.5. Inventory all items by checking the applicable table in Chapter 7. 5.6.1.8 Records Updating. Upon completion of inspection and testing, the date and activity performing the inspection and testing shall be stenciled or stamped using black waterproof ink, A-A-208, Type I or III, black, on tested item in area indicated. For example: 365/450 Day, Special, and if a Functional Test was performed. Dates shall be arranged in columnar form with the earliest date on top (Figure 5-9). The lettering size shall not be less than 1/8 inch nor more than ¼ inch in height. Previous dates shall not be removed or obliterated. Data stenciled or stamped on the cell shall coincide with data on appropriate records. Variations of stenciling inspection data are authorized. See Figure 5-9. NOTE Data pertaining to organization, unit of assignment, or activity entered on AFTO/DD Forms or stenciled on life support/survival equipment could divulge the base, activity, or unit to which the item is assigned. This information may be omitted, deleted, or obliterated at the option of the MAJCOM. a. LPU-6/P-Adjacent to the inflator. b. A-A-50652-Inside the collar top left side (either cell). See Figure 5-10.

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 •

Do not open any sealed or safety-tied portions of preserver. Improper fitting may occur. NOTE

•

A preflight inspection shall be accomplished before each over water flight by aircrew to whom life preserver is assigned.

•

MAJCOMs may establish procedures to ensure adequate inspection of equipment is accomplished.

a. Inspect exposed metal parts for corrosion and damage. b. If accessible, inspect survival items for presence, security of attachment and, if applicable, operation. c. If applicable, inspect case fabric for cuts, tears, adhesion, abrasions, security of stitching, or other damage. d. Inspect safety-ties on release pins, and lanyards on carrying case, and (if accessible) inflation assemblies. For donning and fitting, refer Chapter 2. e. Inspect assembly for stains, dirt, and general cleanliness. f. Inspect case markings for legibility and correctness. g. Check seams for proper adhesion or stitching. h. Check straps and loops for security and wear. Figure 5-9.

Stenciling Inspection Data on Life Preservers

c. LPU 3/P and 10/P-Near grommets where cell is attached to container. 5.6.2 Preflight/Screening Inspection. The Preflight/ Screening Inspection shall be performed by qualified/fully trained personnel before issue or delegated aircrew member before flight. Visually inspect for the following:

•

i. Any other parts for wear, damage, and security. j. Check that DD Form and AFTO Form entries are complete, accurate, and correspond. NOTE If any discrepancy is noted, the preserver shall be removed from service and repaired. Refer to Chapter 6.

Inspection and test areas must be smooth, free of splinters, sharp projections, and oil stains. Areas with abrasive characteristics shall be covered.

Change 1

5-41

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 5-10.

5-42

Stenciling Inspection Data (A-A-50652)

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

CHAPTER 6 MAINTENANCE AND REPAIR SECTION I U.S. ARMY USE ONLY 6.1

SCOPE.

This chapter contains instructions for the repair of various components or subassemblies of life rafts and life preservers to ensure that appropriate items of equipment remain in a serviceable status. Reference numbers for minor parts are included in the applicable paragraphs of this section. Other replacement parts, such as carrying cases and equipment containers, are listed in the applicable table for each item in Chapter 7. 6.2 MAINTENANCE ALLOCATION CHART (FOR ARMY USE ONLY). The Maintenance Allocation Chart (Table 6-1) provides a general explanation of all maintenance and repair functions at various maintenance levels. The Maintenance Allocation Chart (MAC) designates overall responsibility for the performance of maintenance functions on the identified end item or component. The implementation of the maintenance functions upon the end item or component will be consistent with the assigned maintenance functions. 6.2.1 Column Entries Used in the MAC. The following is an explanation of the column entries used in the MAC. 6.2.1.1 Column 1, Group Number. Column 1 lists group numbers, the purpose of which is to identify components, assemblies, subassemblies, and modules with the next higher assembly. 6.2.1.2 Column 2, Component/Assembly. Column 2 contains the names of components, assemblies, subassemblies, and modules for which maintenance is authorized.

6.2.1.4 Column 4, Maintenance Level. Column 4 specifies, by the listing of a work time figure in the appropriate column(s), the lowest level of maintenance authorized to perform the function listed in column 3. This figure represents the active time required to perform the maintenance function at the indicated level of maintenance. If the number or complexity of the tasks within the listed maintenance function varies at different maintenance levels, appropriate work time figures will be shown for each level. The number of man-hours specified by the work time figure represents the average time required to restore an item (assembly, subassembly, component, module, end item, or system) to a serviceable condition under typical field operating conditions. This time includes preparation time, troubleshooting time, and quality assurance/quality control time in addition to the time required to perform the specific tasks identified for the maintenance functions authorized in the Maintenance Allocation Chart. The symbol designations for the various maintenance levels are as follows: •

C: Operator or crew.

•

O: Organization maintenance.

•

F: Direct support maintenance.

•

H: General support maintenance.

•

D: Depot maintenance.

6.2.1.5 Column 5, Tools and Equipment. Column 5 specifies by code those common tool sets (not individual tools) and special tools, test, and support equipment required to perform the designated function. Refer to Paragraph 6.2.3.

6.2.1.3 Column 3, Maintenance Functions. Column 3 lists the functions to be performed on the item listed in column 2. For a detailed explanation of these functions, refer to Paragraph 6.2.2.

6-1

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 Table 6-1.

(1) Group Number 01

02

03

Life Preservers LPU-10/P

Life Rafts, 1-Man LRU16/P, LRU-17/P

Life Rafts, 7-Man LRU1/P; 20-Man F-2B

04

Carbon Dioxide Cylinder for Life Preserver LPU10/P

05

Carbon Dioxide Cylinder for Life Raft, 1-Man, LRU-16/P, LRU-17/P Carbon Dioxide Cylinder for Life Raft, 7-Man, LRU-1/P, 20-Man F-2B Cells for Life Preserver LPU-10/P

06

07

08

09

10

6-2

(2) Component/Assembly

Cells for Life Raft, 1- Man LRU-16/P, LRU-17/P

Cells for Life Raft, 7- Man LRU-1/P; 20-Man F-2B

Safety Container Threads for Life Preserver LPU10/P

Maintenance Allocation Chart

(3) Maintenance Function Inspect Test Service Adjust Replace Repair Inspect Test Service Adjust Replace Repair Inspect Test Service Adjust Replace Repair Inspect Test Replace Inspect Replace

C

(4) Maintenance Level O F H D

(5) Tools and Equipment

0.1

(6) Remarks A,B

0.1 0.1 0.1 0.2 2.0

2.0

2.0

8.0

0.2

B,C 0.5 1.0

0.2 0.5 2.0

2.0

2.0

8.0

0.4

B,C 1.0 2.0

0.4 1.0 4.0 0.1 0.2 0.1 0.5 1.0

Inspect Test

1.0 2.0

Inspect Test Service Inspect Test Service Repair Inspect Test Service Repair Service Replace

0.2 6.0 1.0 0.5 8.0 2.0 4.0 1.0 8.0 4.0 4.0 0.1 0.5

4.0

4.0 12.0 1

D

2

D

2

D

3

E F G

3

3 3 4

F G H F G H

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 6.2.1.6 Column 6, Remarks. This column contains a letter code in alphabetical order which shall be keyed to the remarks contained in Table 6-2. Table 6-2. Reference Code A B C D E F G

H

6.2.2.7 Install. The act of emplacing, seating, or fixing into position an item, part, or module (component or assembly) in a manner to allow the proper functioning of an equipment or system.

Remarks Codes

Remarks Before each flight over water. Work area to be smooth and free of abrasive material. Periodic Inspection interval. Cylinder weight: every Periodic Inspection. Periodic Inspection interval. Leakage test: every Periodic Inspection. Remove air from cells with vacuum cleaner prior to repacking in accordance with Chapter 5. Repairs limited to tears, rips, or punctures in accordance with this chapter.

6.2.2 Maintenance Functions. The following is an explanation of column 3 MAC entries. 6.2.2.1 Inspect. To determine the serviceability of an item by comparing its physical, mechanical, and/or electrical characteristics with established standards through examination. 6.2.2.2 Test. To verify serviceability and detect incipient failure by measuring the mechanical or electrical characteristics of an item and comparing those characteristics with prescribed standards.

6.2.2.8 Replace. The act of substituting a serviceable like type part, subassembly, or module (component or assembly) for an unserviceable counterpart. 6.2.2.9 Repair. The application of maintenance services (inspect, test, service, adjust, align, calibrate, or replace) or other maintenance actions (welding, grinding, riveting, straightening, facing, remachining, or resurfacing) to restore serviceability to an item by correcting specific damage, fault, malfunction, or failure in a part, subassembly, module (component or assembly), end item, or system. 6.2.2.10 Overhaul. That maintenance effort (services/actions) necessary to restore an item to a completely serviceable/operational condition as prescribed by maintenance standards (i.e., DMWR) in appropriate technical publications. Overhaul is normally the highest degree of maintenance performed by the Air Force. Overhaul does not normally return an item to like new condition. 6.2.2.11 Rebuild. Consists of those services/actions necessary for the restoration of unserviceable equipment to a like new condition in accordance with original manufacturing standards. Rebuild is the highest degree of material maintenance applied to Air Force equipment. The rebuild operation includes the act of returning to zero those age measurements (hours/miles, etc.) considered in classifying Air Force equipment/components. 6.2.3 Tools and Test Equipment. Table 6-3 lists tools and support equipment required to perform the designated functions as outlined in the MAC.

6.2.2.3 Service. Operations required periodically to keep an item in proper operating condition, i.e., to clean (decontaminate), to preserve, to drain, to paint, or to replenish fuel, lubricants, hydraulic fluids, or compressed air supplies.

6.2.3.1 Column Entries Used in Tool and Test Equipment Table. The following is an explanation of the column entries used in the Table 6-3.

6.2.2.4 Adjust. To maintain, within prescribed limits, by bringing into proper or exact position or by setting the operating characteristics to specified parameters.

6.2.3.1.1 Column 1, Tool or Test Equipment Reference Code. The tool and test equipment reference code correlates with a maintenance function on the identified end item or component.

6.2.2.5 Align. To adjust specified variable elements of an item to bring about optimum or desired performance. 6.2.2.6 Calibrate. To determine and cause corrections to be made or to be adjusted on instruments or test measuring and diagnostic equipment used in precision measurement. Consists of comparisons of two instruments, one of which is a certified standard of known accuracy, to detect and adjust any discrepancy in the accuracy of the instrument being compared.

6.2.3.1.2 Column 2, Maintenance Level. The lowest level of maintenance authorized to use the tool or test equipment. 6.2.3.1.3 Column 3, Nomenclature. Name or identification of the tool or test equipment. 6.2.3.1.4

Column 4, National/NATO Stock Number.

6-3

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 The national or NATO stock number of the tool or test equipment. Table 6-3. (1) Reference Code 1 2

(2) Maintenance Level O O

3 4

O O

6.2.3.1.5 Column 5, Tool Number. The manufactures part number.

Tools and Test Equipment

(3) Nomenclature Beam Scale, 0 to 100 Grams Scale, Dial Indicating Scale, Digital Vacuum Cleaner, 115 volts AC Thread, Nylon, Type I, Class 1, Size A

(4) National/NATO Stock Number 6670-00-514-4117 6670-00-255-0239 6670-01-275-0937 or equal 7910-00-550-9116 8310-00-262-3324

(5) Tool Number

W-C-421, Type I

SECTION II LRU-1/P (7-MAN), F-2B (20-MAN), AND 25-MAN LIFE RAFT ASSEMBLIES, AND LPU-6/P INFANT’S FLOATING COT, LPU-3/P, LPU-10/P, A-A50652 LIFE PRESERVER ASSEMBLY REPAIRS 6.3 LIFE RAFT AND LIFE PRESERVER MAINTENANCE AND REPAIR.

b. Split on open tube seams. c. Leaky bulkheads on multiplace life rafts.

Maintenance and repair of life rafts and life preservers consists of the following procedures: a. Determination of reparability.

d. Damaged, malfunctioning, or excessively corroded topping-off valves that cannot be corrected by replacement of topping-off valve open insert.

b. Cleaning.

e. Extensively damaged floors.

c. Repair of components as permitted in this chapter.

f. Oil, grease, or foreign substance that has caused stains or deterioration of fabric.

d. Updating configurations. g. Delamination of rubberized coating. e. Leak test after repair and/or inspect repair for proper operation, ease of movement and for serviceable condition. Equipment will be removed from service if any doubt of serviceability exists. 6.4

DETERMINATION OF REPARABILITY.

Life rafts and life preservers shall be considered beyond repair for any of the following reasons: NOTE Repair of the A-A-50652 (commercial) is limited to minor repairs, such as: restitching of webbing/ straps and installation of buckles and similar hardware (salvageable) from condemned like units. Minor repairs are allowed to buoyancy chambers. When repaired, leak test in accordance with Chapter 5. a. Splits, rips, or tears across air retaining seams.

6-4

h. Deterioration of fabric from heavy mildew. i. Holes, rips, tears, or punctures which exceed four inches for LRU-1/P life rafts and six inches for F-2B and 25-Man life rafts and exceeding ½ inch for life preservers. j. Oral tube or inlet valve stem separating from fabric. k. Life Preserver-Porous fabric areas on cells, exceeding ½ inch. l. If any assembly requires excessive repair in the opinion of the inspector or supervisor. m. Internal repairs requiring opening of air retaining seams, except inlet valve repair on F-2B life raft assembly.

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 and may affect skin and respiratory tract. Use in a well ventilated area. Chemical goggles and chemical gloves will be worn.

n. Abraded areas exceeding 1 inch for life preservers and 2 inches on life rafts. o. Life Preserver-Holes where patches must overlap seams, other patches, or openings for oral inflation tubes and inflator stems, except contractor applied patches. p. Manufacturers patches that are or have lifted, separated or delaminated.

a. Prepare solution of cleaning compound, MIL-PRF87937 or Knights Spray Nine Cleaner (when using cleaning compound only) consisting of one part compound and three parts water. b. Apply solution of Knights Spray Nine Cleaner to soiled area with a spray or swab.

q. Life preserver cells requiring more than two patches. r. Pneumatic compartment of LPU-6/P infant cot requiring more than three patches. s. Hook/pile fasteners that lose their clinging ability. 6.5

c. Allow solution to remain on the surface for several minutes; then agitate with a soft brush or cloth. d. Rinse the surface thoroughly with water; wipe with a cloth or sponge. Repeat this application until surface is free from all solution.

CLEANING.

To clean life rafts, life preservers, containers, and/or cases, proceed as follows:

e. Dry life raft or life preserver with a lint-free cloth and apply a light coating of talc, MIL-T-50036, Type T1 or A-A-59303A. 6.6

•

Harsh solvents are not to be used to clean life rafts or life preservers.

•

Cleaning Compound, Alkaline, Water Based, MIL-PRF-87939, is extremely harmful to eyes

REPAIRS.

6.6.1 Cementing Life Rafts and Life Preservers Using MIL-A-5540, Class 3 Form B Adhesive. To cement life rafts and life preservers using MIL-A-5540, Class 3 Form B adhesive, and Life Raft using MMM-A-139B, Class 2 or 3 adhesive or equivalent proceed as follows:

6-5

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

•

•

Toluene is flammable and may affect eyes, skin, and respiratory tract. Use in a well ventilated area. Avoid prolonged breathing of vapors. Avoid eye and repeated skin contact. Keep away from sparks and flames. No repair allowed on manufactured patches; Remove from service; could result in personal injury.

utes drying time between each coat. Before bonding, allow the final coat to dry 15 minutes or until the film develops and is aggressively tacky but will no longer transfer to the touch. d. Roll the bonded seams together by bearing down with force, using a 2 pound roller. e. Allow repairs to cure for 72 or 120 hours. Refer to Paragraph 3.3 for environmental conditions. f. Dust area lightly with talc, MIL-T-50036, Type T1, or A-A-59303. g. Perform leakage test in accordance with Chapter 5.

•

Due to the various materials utilized to manufacture the life rafts, different adhesives are needed. Life rafts purchased after 1974 are made of synthetic rubber-coated material and should be repaired with MIL-A-5540, Class 3 Form B adhesive. Life rafts purchased before 1974 are made with natural rubber and should be repaired with MMM-A-139, Class 2 or 3 adhesive or equivalent.

•

Life preservers should be repaired with MILA-5540, Class 3 adhesive.

•

Do not touch cleaned area when handling, except to check the dryness of the adhesive. NOTE

•

Vulcanizing process for repair of life rafts is only authorized when equipment and capability already exist.

•

Vigorously wash bonding areas. Use toluene to reactivate the material prior to cementing. Pigment from the material coloring and/or staining a clean cloth rubbed over the treated surface will indicate the material has been reactivated. Adhesive shall be applied immediately after the surface has dried.

a. Clean all surfaces to be bonded by washing four times with toluene. Apply toluene with back and forth strokes on the first and third application and up and down strokes on second and fourth application. Do not touch cleaned area when handling, except to check the dryness of the adhesive. Allow to dry for a minimum of 20 minutes or until dry before applying the first coat of adhesive. b. Stir material (base and accelerator) well before and after combining as recommended by the manufacturer. Recommend adhesive not be thinned. c. Apply at least two and not more than three coats of adhesive to the surfaces to be bonded. Allow 15 min6-6

NOTE •

Repair of the A-A-50652 (commercial type) is limited to minor repairs such as: restitching of webbing/straps and installation of buckles and similar hardware (salvageable) from condemned like units. Minor repairs are allowed to buoyancy chambers. When repaired, leak test in accordance with Chapter 5.

•

The fabric used to manufacture the A-A-50652 (commercial type) life preserver is polyurethane and allows like side of patch material (rough or coarse side) to be glued together.

6.6.2 Patching Life Rafts and Life Preservers. To patch life rafts and life preservers, select color and material to match item to be patched. Repair holes, tears, cuts, or punctures 2 inches or less in length or diameter for life rafts and ½ inch or less in length or diameter for life preserver by applying an outside patch. Holes or tears in life rafts exceeding 2 inches will require an inside patch as well as an outside patch. The vulcanizing process for repair of life rafts is only authorized when equipment and capability already exist. Repair porous or abraded areas 4 inches or less for LRU1/P life rafts, 10 inches or less for F-2B life rafts, 1 inch or less for LPU-6/P and ½ inch or less for other life preservers by applying an outside patch. NOTE Use cloth, Laminated, MIL-C-23070, Var C, orange or yellow on multiplace life rafts. Use cloth, MIL-C-19002, Type I, orange on life preservers. Cloth from condemned life rafts or life preservers may be used. a. Cement patch to damaged area in accordance with Paragraph 6.6.1. b. Perform leakage test in accordance with Chapter 5. 6.6.2.1 Outside Patch. To apply an outside patch, proceed as follows:

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 a. Select type of fabric for life raft or life preserver being patched. Refer to Paragraph 6.6.2.

b. Cut a rounded or rectangular patch 1½ inches larger than the damaged area on all sides. See Figure 6-1.

b. Cut a rounded or rectangular (with or without curved edges) patch 1-½ inches larger than the damaged area on all sides. See Figure 6-1.

c. Mark a center line on side of patch that is to be attached to life raft. Mark cross lines 1½ inches from each end of patch. When patch is applied to damaged area on inside, longitudinal edges of damaged area will coincide with center line; cross lines on end of patch will coincide with ends of damage. See Figure 6-1.

c. Cement patch to damaged area. Refer to Paragraph 6.6.1. d. Perform leakage test. Refer to Chapter 5. 6.6.2.2 Inside Patch. To apply an inside patch, proceed as follows: NOTE Inside patch is applicable to multiplace life rafts only. a. Select type of fabric for life raft being patched. Refer to Paragraph 6.6.2.

Figure 6-1.

Fabrication of Patch

d. In order to ensure that inside surface of life raft is properly powdered in area of repair, pass a small handful of talc MIL-T-50036, Type T1 or A-A-59303A through damaged opening in life raft, placing it approximately 12 inches from damaged area. This shall be accomplished before inside area is cemented, exercising care to prevent distribution of talc, MIL-T50036, Type T1 or A-A-59303A prior to completing repair. e. Apply adhesive in accordance with Paragraph 6.6.1. f. Fold patch lengthwise in a U-shaped fashion and insert patch between torn edges of damaged area on life raft. Position patch so that fabric at end of tear coincides with a cross line, and center line on patch follows one

edge of torn fabric. Attach one edge of torn fabric along center line on patch and inspect for wrinkles. Remove all wrinkles, working from attached edge of fabric to edge of patch. Lay opposite edge of torn fabric against but not overlapping edge of torn fabric that has already been applied to patch and remove wrinkles. g. Scatter talc placed in tube in step d by grasping sides of flotation tube and pulling them apart. h. Prepare and attach outside patch in accordance with Paragraph 6.6.2.1. i. Perform leakage test in accordance with Chapter 5.

6-7

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 6.6.3 Re-cementing or Replacing Seam Tapes. This repair shall be done only if flotation tube does not leak; that is, if only the outer seam tape is loose, or if the seam does not seal a flotation tube. To re-cement or replace a seam tape, proceed as follows:

Avoid excessive application of toluene on seams. Remove any spilled or excess toluene immediately.

NOTE All cementing shall be performed in accordance with Paragraph 6.6.1. a. If tape MIL-C-23070, Var T, Orange 1 1/4 inch is present and undamaged, re-cement tape to life raft. b. If tape is missing, measure and fit a replacement tape to the area, and cement in place. Overlap other seams a minimum of 1 inch.

c. If tape is damaged, peel damaged tape from life raft. Apply toluene only as needed to loosen tape. Trim damaged tape and replace with new tape, MIL-C23070, Var T, orange, 1¼ inch. Overlap other seam tape a minimum of 1 inch. d. Perform leakage test in accordance with Chapter 5.

Toluene is flammable and may affect eyes, skin, and respiratory tract. Use in a well-ventilated area. Avoid prolonged breathing of vapors. Avoid eye and repeated skin contact. Keep away from sparks and flames.

SECTION III LIFE RAFT REPAIRS 6.7 6.7.1

GENERAL REPAIRS. Repair on the Canopy.

a. Inspect canopy to determine the serviceability of the item. All repairs will not exceed the following dimensions: seams, holes, and tears no more than 20 inches in length and 2 inches in width. Tie-down straps, if damaged, will be replaced or repaired with the same or equal material/fabric. Elastic cord and zippers will be replaced if found unserviceable with same size. NSN for elastic cord and zipper is available through base supply. All repairs will be reinforced with same or equal material/fabric to both sides 2 inches larger than the damaged area. Also glue one side in accordance with Paragraph 6.6.1 before sewing with nylon thread, V-T-295 Type I, Class A, Size E for water resistance. b. Zippers will be repaired and reinforced in the damaged areas with same or equal material or replaced with new zipper using original manufacture pattern. 6.7.2 Replacement of Sea Anchor Retention Line. To replace retention line, proceed as follows: a. Cut a piece of nylon cord, MIL-C-5040, Type III and sear both ends. (1) For LRU-1/P life rafts, cut approximately a 15 foot ±6 inches in length of nylon cord. 6-8

(2) For F-2B life raft, cut approximately a 25 foot ±6 inches in length of nylon cord. b. Tie one end to the sea anchor bridle using a bowline knot. c. Tie other end to the life raft sea anchor patch loop, cross tapes or survivor holding handles as applicable with a bowline knot. d. Tie Bridle lines through grommets (4 places) as follows (See Figure 6-2): (1) Loop end of cord through grommet and form a figure eight or bowline knot as close as possible to top edge of sea anchor. (2) Tie end with an overhand knot approximately one inch from the end. 6.7.3 Repair/Replacement of Valve Protective Cover. To repair or replace valve protective cover, proceed as follows: a. Using template (FO-1), cut out ¼ inch felt sheet. b. Using template (FO-2), cut out protective cover from laminated cloth.

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 c. Lay felt on laminated cloth, fold excess cloth material over felt, and stitch with nylon thread, V-T-295, Type I, Class A, Size E, 5 to 7 stitches per inch, around outside perimeter of cover, ½ inch from edge. Clip corners and bottom center of cover.

Figure 6-2.

Sea Anchor Retention Line

6-9

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 d. Turn cover over and stitch 24 inch length of nylon tape 1½ inches from bottom of cover.

6.8

F-2B LIFE RAFT REPAIRS.

6.8.1

F-2B Repairing Leaks Around Inlet Valve. NOTE

Ensure inlet valve check element has been removed in accordance with Chapter 4. To repair leak around inlet valve, proceed as follows:

e. Fold in half and stitch inside out on dotted lines, using nylon thread, V-T-295, Type I, Class A, Size E, 5 to 7 stitches per inch.

Toluene is flammable and may affect eyes, skin, and respiratory tract. Use in a well-ventilated area. Avoid prolonged breathing of vapors. Avoid eye and repeated skin contact. Keep away from sparks and flames. a. Remove cover patch (the layer of buoyancy tube material that extends over inlet valve rubber base). (1) Apply limited amount of toluene and separate material from rubber base with a spatula or smooth flat piece of metal.

Do not cut tube material that extends under the rubber base.

f. Turn valve protective cover inside out.

6-10

(2) Slightly bend life raft down from inlet valve and cut material around inside diameter (approximately 1/8 inch) of rubber base. Apply toluene to rubber base and remove valve. See Figure 6-3.

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 6-3.

Removal of Inlet Valve

b. Remove as much of cover patch as possible and clean both surfaces (life raft and inlet valve rubber base) with toluene. c. Select fabric to be used. Refer to Paragraph 6.6.2. Fabricate an inlet valve cover patch: a 6-inch diameter circle with a 1¼-inch cutout in the middle.

blunt spatula-type device. Use blunt device to help separate the two portions of the equalizer tube. Clean both portions thoroughly with toluene. Do not touch cleaned area when handling, except to check the dryness of the adhesive. Allow to dry for 20 minutes or until dry before applying the first coat of adhesive.

d. Apply three coats of adhesive to life raft and bottom of inlet valve. Allow first two coats to dry thoroughly.

c. Apply two coats of adhesive, MIL-A-5540, Class 3 Form B, to the surfaces of the equalizer tube to be bonded.

e. When third coat of adhesive becomes tacky, install inlet valve, PN MS29600-1 (MIL-V-8883). Let dry for 24 hours.

d. Allow each coat to dry thoroughly about 15-20 minutes between each coat.

f. Apply three coats of adhesive to top of inlet valve and cover patch. Allow first two coats to dry thoroughly. When third coat becomes tacky, place cover patch over inlet valve and roll out trapped air bubbles. Let dry for 72 hours.

e. Apply third coat of adhesive to both portions and immediately join the two portions of the equalizer tubes halves together. Ensure adhesive does not block tube passageway.

g. Dust area with talc, MIL-T-50036, Type T1 or A-A59303A.

f. Cut rubberized tape, MIL-C-23070, var T, orange, ¼-inch wide, 6 inches long to wrap around equalizer tube seam.

h. Perform leakage test in accordance with Chapter 5. 6.8.1.1 F-2B Repair of Equalizer Tube. See Figure 6-4. To repair a defective equalizer toe, proceed as follows: a. Carefully separate equalizer tube cover and equalizer tube using toluene and acid brush. b. Carefully take apart the male and female portion of the equalizer tube using toluene, acid brush and stick, or a

g. Apply two coats of adhesive to rubberized tape and area around outside of equalizer tube where they join. Allow each coat to dry thoroughly about 15-20 minutes. h. Apply third coat of adhesive to rubberized tape and area around outside of equalizer tube allowing adhesive to become aggressively tacky. Wrap rubberized tape area where equalizer tubes join.

6-11

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 i. Apply adhesive to area on equalizer tube where equalizer tube cover will be attached and on equalizer tube cover using three coats of adhesive. Allow first two coats to dry and when the third coat gets tacky stick together.

Figure 6-4.

j. Allow cement to cure for 72 to 120 hours. Refer to Paragraph 3.3 for environmental conditions. k. Perform leakage test in accordance with Chapter 5.

Repair of Equalizer Tube

6.8.1.2 F-2B Replacement of Topping-Off Valve. See Figure 6-5. To replace a damaged or corroded topping-off valve, proceed as follows: NOTE Use Part Kit PN 1106AS110-1, NSN 4810-01128-5331 and Topping-off Valve PN MS22054-1. a. Ensure that grip subassembly is in closed position. b. Turn grip subassembly clockwise approximately 1½ turns.

DO NOT use sharp instrument to insert washer into seating area. h. Insert washer into washer seating area. Ensure that the washer is properly seated on to bottom of spool and that the threads and opening are free of adhesive. i. Screw grip subassembly counterclockwise into spool until it closes.

c. Remove screw from side of spool.

j. Turn grip subassembly clockwise approximately 1½ turns.

d. Unscrew and remove grip subassembly from spool.

k. Tighten screw into side of spool until snug.

e. Remove washer located in bottom of spool. If necessary, use only enough toluene to loosen or assist in removal. Wipe excess toluene from life raft as rapidly as possible.

l. Ensure proper operation of topping-off valve. m. Perform leakage test in accordance with Chapter 5. n. If leaking from around topping-off valve PN MS22054-1, replace as follows:

To avoid damaging valve threads, care should be taken when inserting instrument to remove washer. Ensure that no toluene passes through bottom of valve opening. f. Insert an applicator or similar instrument dipped in toluene into spool and swab washer seating area to remove old adhesive. g. Apply adhesive, MIL-C-5540, using an applicator or similar instrument, to washer seating area on inside bottom of spool.

6-12

(1) Remove cover patch (the layer of buoyancy tube material that extends over topping-off valve rubber base). (2) Apply limited amount of toluene with acid brush and separate material from rubber base with a spatula or smooth flat piece of metal. (3) If required, slightly bend life raft down from topping-off valve and cut material around inside diameter (approximately 1/8 inch) of rubber base. Apply toluene to rubber base and remove valve.

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 (4) Remove as much of cover patch as possible and clean both surfaces (life raft and topping-off valve rubber base) with toluene. (5) Select fabric to be used. (Refer to Paragraph 6.6.2). Fabricate a topping-off valve cover patch, a 6.5 inches diameter circle with a 2 inch cutout in the middle. (6) Apply three coats of adhesive to life raft and bottom of topping-off valve. Allow first two coats to dry thoroughly.

(8) Apply three coats of adhesive to top of toppingoff valve and cover patch. Allow first two coats to dry thoroughly. When third coat becomes tacky, place cover patch over topping-off valve and roll out trapped air bubbles. Let dry for 72 hours. (9) Dust area with talc, MIL-T-50036, Type T1 or A-A-59303A. (10) Perform leakage test in accordance with Chapter 5.

(7) When third coat of adhesive becomes tacky, install topping-off valve. Let dry for 24 hours.

Figure 6-5.

Replacement of Topping-off Valve

6.8.1.3 Replacement of Manifold. To replace a defective manifold or to replace a PN 9153 with a PN C-50980 manifold, proceed as follows:

b. If vent manifold, PN C-50980 is unserviceable, dispose and replace with new manifold (there are no adjustments to this manifold).

a. If vent manifold, PN 9153 is installed, rebuild using parts contained in overhaul kit, PN 762. See Figure 9-5.

(1) DO NOT use nylon gaskets on the outlets with manifold, PN C-50980.

NOTE When installing, manifold PN 9153, ensure that nylon gaskets are properly positioned; the two nylon gaskets with larger inside diameters are to be placed toward life raft.

(2) When reinstalling manifold, PN C-50980, ensure copper seals, PN A50969 are present and properly positioned around the setscrews on the outlets.

6-13

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 (3) To reset manifold, PN C-50980 to vent position, apply inward pressure on the head of the breather piston, in the center of the stainless steel nut, until re-seated. Listen for two distinct popping sounds. c. For both manifolds, ensure nylon gasket is not wedged in port between manifold and CO2 cylinder valve. Torque to 140 to 150 inlb. d. Perform leak test in accordance with Chapter 5. e. For manifold PN 9153, perform functional pull test in accordance with Chapter 5. 6.9 LRU-1/P, F-2B CONTAINERS AND CARRYING CASE REPAIRS. 6.9.1 Repairing of the LRU-1/P, F-2B Life Raft Containers and Carrying Case Handles. To repair life raft containers proceed as follows: NOTE Repairs shall be limited to minor repairs of holes, tears, abrasions, restitching of seams and re-cementing of handles.

e. For handles not requiring re-cementing, sew handles in a box-X stitch formation using nylon thread, V-T-295 Type I, Class A, Size E 8 to 10 PSI. 6.9.1.1 F-2B and LRU-1/P Life Rafts Repair Cones on Container/Case. To repair cones, proceed as follows: NOTE Repairs shall be limited to minor repair of reattaching cones to container/case assembly. a. Retacking is the only repair function performed on a locking cone, PN 60A116C16-1. Replace broken or loose locking cone tacking by adapting the procedures below. (1) If applicable, cut and remove the tacking, securing the original locking cone to the case. (2) If the fabric area supporting the original locking cone has been damaged, repair the area by darning the case, however, if darning does not provide an adequate repair, construct a suitably sized reinforcement of the same type material as used in the original locking cone location.

a. To repair life raft container, nylon thread, V-T-295, Type I, Class A, Size E, of similar color to the container. Machines sew with an 8 to 10 SPI setting.

b. Position the replacement locking cone in the original locking cone location and ensure the ripcord locking pin hole at the cone top is aligned in the same direction as the original locking cone or other installed cones.

b. Darn holes or tears under ½ inch in diameter. Use a patch of like material, MIL-C-20696 cloth, coated, on the inside of the container on all holes or tears over ½ inch in diameter. Back stitch ½ inch.

c. HAND SEWING: The cones shall be attached with a minimum of four double threads through each hole. Proceed as follows:

c. If re-cementing is required on the carrying case, cement in accordance with Paragraph 6.6.1.

(1) Push tacking needle, threaded with nylon thread, V-T-295 Type I, Class A, Size E and doubled, up through panel and through hole 1 in locking cone.

d. Reinforce handles of container/case after re-cementing, using nylon thread, V-T-295 Type I, Class A, Size E approximately ½ inch inside outer edge of circular patch.

6-14

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 Pull needle and thread up through hole 1 until approximately 3 inches of thread remains below panel.

(2) Working clockwise, pass needle down through hole 2 and up through hole 3. Continue until all holes are threaded and needle passes up through hole 1. Take up all slack in thread.

6-15

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 (3) Working counterclockwise, pass needle down through hole 8 and up through hole 7. Continue until needle passes down through hole 2. Take up all slack in thread.

down through hole 2. Continue stitching in this manner until needle passes down through hole 8. Take up all slack in thread.

(6) Tie ends of thread on inside of flap with a surgeon’s knot followed by a locking overhand knot. Trim thread ends to within ¼ inch of knots. (4) Pass needle up through panel next to outside edge of locking cone, directly in front of hole 1.

6.9.1.2 F-2B and LRU-1/P Life Rafts Protector Flap on Container/Case. To prevent the locking cones from piercing the cable protector flap, proceed as follows: 6.9.1.2.1 MAJCOM OPTION: To prevent the locking cones from piercing the cable protector flap, sew a piece of webbing, MIL-W-4088, Type VIII, Class 1 or equivalent to the inside of the cable protector flap directly over the locking cone area from end to end with nylon thread, V-T-295 Type I, Class A, Size E, 7-11 stitches per inch, around the perimeter of the webbing 1/8 inch in from the edge. 6.10 LIFE RAFT ACTUATING AND RETAINING LINE ASSEMBLY, AIRCRAFT RETENTION LINE ASSEMBLY, ACTUATION AND RETENTION LINE ASSEMBLY AND PULL CABLE ASSEMBLY REPAIR AND REPLACE.

(5) Working clockwise, pass needle down through hole 1, up through panel in front of hole 2, and

6-16

6.10.1 F-2B Repair/Replacement of Life Raft Actuating and Retaining Line Assembly. To repair/replace life raft actuating and retaining line assembly, proceed as follows:

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 a. Fabricate handle using 20 inch length of nylon webbing, MIL-W-4088, Type II, 1 inch wide and stitch with nylon thread V-T-295, Type II, Class A, Size E, olive drab. See Figure 6-6. b. Install button, MS27980-1B and socket, MS27980-6B fasteners. See Figure 6-6. c. Sear ends of 25 foot nylon cord, MIL-C-5040, Type III and attach to handle with a square knot as shown in Figure 6-6.

6.10.1.1 Repair/Replacement of Life Raft-to-Aircraft Retention Line Applicable to C-130, Aircraft Remote. Proceed as follows: a. Method A: Cut a piece of nylon cord, MIL-C-5040, Type I approximately 15 feet in length, sear ends. Refer to Chapter 7 for attachment of retaining line. b. Method B: (1) Cut a piece of nylon cord, MIL-C-5040, Type I approximately 15 feet in length, sear ends. (2) Fabricate retention line and attach swivel snap hook, 2 C, 1.875, 18 eye. See Figure 6-7. (3) Refer to Chapter 7 for attachment of retaining line.

Figure 6-6.

Life Raft Actuating and Retaining Line Assembly

Figure 6-7.

Life Raft-to-Aircraft Retention Line (Applicable to C-130, Aircraft Remote)

6.10.1.2 Repair/Replacement of F-2B T-43 Cargo Floor Assembly Life Raft Actuation and Retention Line Assembly. To repair/replace the actuation and retention line assembly, proceed as follows (See Figure 6-8):

a. Cut approximately 20 feet of cord, MIL-C-5040, Type I or IA, olive drab. Heat sear ends of cord to keep cord from unraveling. b. Using a bowline knot, tie one end of the retention line to the snap hook assembly, MS27756. Using a bowline knot, tie the other end of the retention line to the cable loop on the actuation assembly D-handle, MS70106. c. Cut approximately 5 feet of cord, MIL-C-5040, Type III, red. Heat-sear ends of cord to keep cord from unraveling.

Figure 6-8. F-2B T-43 Cargo Floor Assembly Life Raft Actuation and Retention Line Assembly

d. Using a bowline knot, tie one end of the actuation line to the cable loop on the actuation assembly D-handle, MS70106. Leave approximately one inch of cord hanging free. Tack free end of bowline knot with two turns of safety thread, V-T-295, Type I, Class A, Size E, doubled. Secure the tacking with a surgeon’s knot and single overhand locking knot.

6-17

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 e. Attach snap hook assembly, MS27756, to D-handle, MS70106. f. Cut approximately 20 feet of cord, MIL-C-5040, Type III, olive drab or natural. Heat-sear ends of cord to keep cord from unraveling. g. Using a bowline knot, tie one end of the retention line to the cable loop on the actuation assembly D-handle, MS70106.

a. Attach a 20 foot length of nylon cord, MIL-C-5040, Type III color natural, with ends seared, to loop over pull cable assembly with a bowline knot. See Figure 6-9. b. Attach a 5 foot length of nylon cord, MIL-C-5040, Type III color red, with ends seared, to loop on pull cable assembly with a bowline knot. See Figure 6-9.

6.10.1.3 Repair/Replacement of Pull Cable Assembly. To repair/replace pull cable assembly, proceed as follows:

Figure 6-9. 6.11

Pull Cable Assembly

E-3A AIRCRAFT CONTAINER REPAIRS.

6.11.1 E-3A Aircraft Repair of Life Raft Container. To repair life raft container by adding chafing strips, proceed as follows: a. Cut five chafing strips 28 inches long, using nylon webbing, MIL-W-4088, Type VIII, 1-3/4 inches wide. Sear ends.

6-18

b. Stitch webbing to life raft container, using nylon thread, V-T-295, Type II, Class A, Size FF, 6 to 9 stitches per inch, backstitching a minimum of ½ inch. See Figure 6-10. 6.11.2 Modification of Cylinder Cover (53D3799 or 63A80H8). To modify cylinder cover for use in E-3A aircraft, proceed as follows:

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 a. Remove internal valve chafing pad sewn inside top of cover. Remove tie-straps.

c. Reinstall tie-straps using nylon thread, V-T-295, Type I, Class A, Size E, box “X” stitched. Sew approximately one inch below folded flap so that they easily wrap around the valve neck (below valve head).

b. Cut top of cover off, leaving enough material (1.50 inches) to fold inside cover. Fold, sew using nylon thread V-T-295, Type I, Class A, Size E, and maintain dimension shown in step b.

6-19

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 6-10.

6-20

Installation of Chafing Strips

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 6.11.2.1 E-3A Aircraft Repair of F-2B Life Raft Cover Assembly.

a. Using a No. 40 drill (0.098 inch diameter), carefully drill a hole at each end of crack.

a. Sew cloth, laminated, MIL-C-43006, Type I, Class 3, Form 1, white, into the inside of cover for cuts, tears, punctures, deterioration, and abrasions using nylon thread, V-T-295, Type I, Class A, Size E.

b. Lightly sand inside of case, covering a 1 inch area on all sides of crack. If case is painted, completely remove paint adjacent to crack with fine abrasive paper.

b. For exposed metal around lacing grommets, remove grommets. Cover metal strip with cloth, laminated. Sew material to cover assembly nylon thread, V-T-295, Type I, Class A, Size E. Replace grommets. c. For loose seams, restitch seams; for speed lacing frays, remove cord. Replace cord, restitch to cover assembly using nylon thread, V-T-295, Type I, Class A, Size E. d. For loose strips and handles, restitch to cover assembly using nylon thread, V-T-295, Type I, Class A, Size E. e. To repair the boot cover in the E-3A 20-Man container, request drawing 9194392 CAGE 98748 to repair/replace aluminum plate and phenolic block.

Apply cement immediately after mixing, as hardening occurs rapidly (pot life 0.5 hour). c. Prepare a cement mixture of one part Uralane 8089-A to one part Uralane 8089-B by volume. Liberally apply cement to crack and surrounding sanded area using a paint brush. Allow cement to cure undisturbed for 24 hours at room temperature. d. Smooth any roughness in the repaired area with abrasive paper. If case is painted, touch up repaired area with orange-yellow paint.

NOTE All cementing shall be performed in accordance with Paragraph 6.6.1. 6.12

25-MAN REPAIRS.

6.12.1 25-Man Repair of Life Raft Case Cracks. To repair cracks in 25-Man life raft case, proceed as follows: 6.12.1.1 Length.

Single Hairline Cracks Less than 1 Inch in

Only single hairline cracks, not more than 6 inches long, on a flat or contoured surface may be repaired. NOTE Any other damage (such as radiating, multiple branch cracks, or pieces broken out) or any crack on a contoured surface in a stress area is cause for case to be replaced or returned to manufacturer for possible repair except as specified in Paragraph 6.12.2.

Apply only a small quantity of fusing solution. Excessive quantities will dissolve case material. e. If case is painted, remove paint on exterior surface in area of crack with fine abrasive paper. Apply fusing solution sparingly to crack on exterior surface of case using a Q-Tip swab. The solution will melt the plastic and produce a smooth surface. f. Allow repair to dry for approximately 10 minutes. If case is painted, touch up repaired area with orangeyellow paint. 6.12.1.2 Single Hairline Cracks More than 1 Inch in Length. To repair singe hairline cracks more than 1 inch in length, proceed as follows: a. Using a No. 40 drill (0.098 inch diameter), carefully drill a hole at each end of crack. b. Lightly sand inside of case, covering a 1 inch area on all sides of crack. If case is painted, completely remove paint adjacent to crack with fine abrasive paper. c. Cut a length of fiberglass tape, 2 inch, 12 mil thick sufficient to extend 1 inch over each end of crack.

To repair single hairline cracks less than 1 in length, proceed as follows:

6-21

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 plate on inside of case (in place of original round washer) and secure with 8-32 NC-3B cap nuts. Tighten nuts to 28 to 32 inlb of torque. Apply cement immediately after mixing, as hardening occurs rapidly (pot life 0.5 hour). d. Liberally apply Uralane cement (refer to Paragraph 6.12.1.1, step c) to cracked surface and surrounding sanded area using paint brush. e. Immediately lay fiberglass tape over patching cement on top of crack. Position fiberglass tape so that crack is located in center. Brush a coat of patching cement thoroughly into top of fiberglass tape. Ensure that tape is saturated with cement and free of air bubbles. f. Allow cement to cure for 24 hours at room temperature and smooth rough edges with abrasive paper. g. If case is painted, touch up repaired area with orangeyellow paint. h. Repair exterior surface of case in accordance with Paragraph 6.12.1.1, steps e and f. 6.12.2 Handle Attaching Holes. To repair life raft case handle attaching holes, proceed as follows:

Only single hairline cracks not more than 6 inches long radiating from handle attachment screw hole may be repaired. NOTE Cracking which exceeds these limits or damage of any other type (such as multiple branch cracks or pieces broken out) is cause for case to be replaced or returned to manufacturer for possible repair. a. Repair cracks in accordance with Paragraph 6.12.1.1 and Paragraph 6.12.1.2. b. Fabricate case side handle reinforcement plate (7-7/8 x 3-1/8 inches) or case end handle reinforcement plate (3 x 3-½ inches), as applicable, of 0.071 inch T-3 aluminum alloy sheet. Round off all corners with ¼ inch radius and eliminate all burrs. c. Using case handle attaching boss as a guide, mark for and drill two 3/16 inch holes centrally located from plate edges. d. Reassemble handle to case using 8-32 NC-3A x 9/16 inch screws and square 1 x 1 inch washer to hold webbing handle to outside of case; place reinforcement

6-22

e. Apply pressure sensitive tape, PPP-T-60, Type IV, Class I, or A-A-1586 to cover reinforcement plate edges and cap nut domes. 6.12.3 25-Man Repair or Replacement of Jet Pump Assembly. To repair or replace jet pump assembly, proceed as follows: a. If not already removed, remove flexible hose (Figure 9-9, 1) from inlet port assembly (Figure 9-12, 7). b. Using a multiple spline key adapter, PN 22B19216, or equivalent, remove four screws (2), washers (3) and spider (1) from valve plate cylinder assembly (15). Discard washers (3). NOTE Gaskets (21 and 22) are removable on jet pump assembly, PN 18D17233-0. They are permanently attached to jet pump body (20) and flange (23), respectively, on jet pump assembly, PN 62362-103 and must be removed as complete units. c. Using a multiple spline key adapter, PN 22B19216, or equivalent, remove 10 screws (5) and washers (6) from valve plate cylinder assembly (14). Discard washers (6). Remove jet pump body (20) from inflation tube. Remove gasket (21) from outside of inflation tube or jet pump body, and then remove flange (23) and gasket (22) from interior of inflation tube. Separate gasket (22) from flange (23). NOTE If it has been determined that the jet pump assembly is unserviceable, disregard the procedures contained in steps d through g and install a new jet pump assembly as instructed in steps r through v. d. Remove inlet port assembly (7), O-ring (8), spacer (9), and screen (10). e. Apply heat to threaded portion of nozzle (19), in constant temperature cabinet until a temperature of approximately 177 °C (350 °F) is obtained so that sealant bond between nut (11) and nozzle (19) is released. Remove nut (11) and unscrew nozzle (19) from piston (12). Remove piston (12) and spring (14) from valve plate cylinder assembly (15). Remove O-ring (13) from piston (17). Remove retaining ring (20) and flat washer (21) from nozzle (16). Remove flapper valve (22) from valve plate cylinder assembly (15).

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 f. Clean all parts with dry cleaning solvent MIL-PRF680, Type III, or A-A-59601-3B and blow dry with compressed air. g. Brush any traces of sealant from nozzle threads. Clean sealant from nut threads with a standard ¼-28 UNF2-B tap. h. Visually inspect disassembled parts for scratches, scoring, nicks, dents, or other discrepancies that would render a part unserviceable. Pay particular attention to sealing surfaces of flapper valve (16) and valve plate cylinder assembly (15). Any nick or dent, however small, requires part replacement. i. Replace any discrepant parts with new or serviceable parts and reassemble jet pump assembly.

q. Allow sealant applied in step n to cure for a minimum of 12 hours before testing top plate assembly. Test top plate assembly prior to installation on jet pump body. Connect a source of compressed air to inlet port assembly (7). Test valve with a pressure of 100 PSIG. Nozzle should extend far enough to permit opening of flapper valve (3/4 total extension minimum) and should retract to cause flapper valve to fully close when air source is removed. NOTE Gaskets (21 and 22) are removable on jet pump assembly, PN 18D17233-0. They are permanently attached to jet pump body (20) and flange (23), respectively, on jet pump assembly, PN 62362-103 and must be removed as complete units.

j. Position flapper (16) with sealing bead against underside of valve plate on valve plate cylinder assembly (15). Install flat washer (18) on nozzle (19) and retain in place with retaining ring (20).

r. For jet pump assembly, PN 18D17233-0, cement gasket (22) to flange (23) using rubber cement, MIL-A5540, Class 3, Form B, or equivalent. Ensure that all holes are aligned.

k. Pass threaded end of nozzle (19) through flapper valve (16) and valve plate cylinder assembly (15).

s. For jet pump assembly, PN 18D17233-0, cement gasket (21) to flange of jet pump body (20) using rubber cement MIL-A-5540, Class 3, Form B, or equivalent.

l. Apply a light coat of sealing compound, DC-4, or equivalent, to O-ring (13) and install on piston (12). m. Install spring (14) in cylinder of valve plate cylinder assembly (15) so that it is centered over nozzle (19). n. Coat outside surface of piston (12) and inside of cylinder with McLube 1720L lubricant, or equivalent. Carefully insert piston (12) into cylinder to avoid damage to O-ring (13). Thread piston (12) down over nozzle (19) until it is bottomed on machined shoulder of nozzle. Ensure that threaded end of nozzle protrudes through piston. Apply a light coat of sealant, M11179-4, or equivalent, on nozzle threads. Install nut (11) on nozzle (19) until it bottoms on piston. o. Position screen (10) on valve plate cylinder assembly (15). Install spacer (9) over cylinder of valve plate cylinder assembly (15). Apply a light coat of sealing compound, DC-4, or equivalent, to O-ring (8) and install in inlet port assembly (7).

t. Insert gasket and flange assembly diagonally into flotation tube. u. Apply adhesive primer, Primer T 7471, or equivalent, to threads of screws (2 and 5). Allow to dry a minimum of 3 minutes. Apply 2 drops of sealing compound, Loctite 242, or equivalent, to threaded holes of flange (23). Insert screw (2) with washer (3) through each leg of spider (1) and the four corner holes of the valve plate cylinder assembly (15) and flange (23). Do not tighten screws at this time. Install remaining ten screws (5) and washers (6). v. Torque screws using multiple spline key adapter, PN 22B19216, or equivalent, and torque screwdriver, or equivalent, to 20 to 30 inlb using pattern shown in Figure 6-11. w. Perform leakage test in accordance with Chapter 5.

p. Install inlet port assembly (7) on cylinder of valve plate cylinder assembly (15). Tighten inlet port assembly, and then back off inlet port until hose connection is 90 degrees to center rib of valve plate cylinder assembly.

6-23

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 a. Unsnap and remove pressure relief valve cover assembly.

Clamp plate (Figure 6-12, 2) is under spring pressure. Remove screws (1) carefully so as not to cause parts to fly around. NOTE Disassembly should be accomplished only to the extent necessary to effect the required repair. Index numbers are in disassembly sequence.

Figure 6-11.

Jet Pump Assembly Screw Torque Pattern

6.12.4 25-Man Repair or Replacement of Pressure Relief Valve Assembly PN C18191-4C. To repair or replace pressure relief valve assembly PN C18191-4C, proceed as follows:

Figure 6-12.

Pressure Relief Valve Assembly, PN C18191-4C

b. Remove four screws (Figure 6-12, 1) using multiple spline key adapter, PN 22B19216, or equivalent, while maintaining pressure on clamp plate (2) and housing (8). c. Remove clamp plate (2), spider (3) with piston guide (4), spring (5), and piston (6). 6-24

d. Remove housing (8) from inside life raft assembly. e. Remove sealing ring (7) from housing. f. Loosen epoxy cement that secures piston guide (4) to spider (3) using toluene.

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 g. Clean metal parts with dry cleaning solvent, MIL-PRF680, Type III, or A-A-59601-3B and blow dry with compressed air. h. Visually inspect disassembled parts for scratches, scoring, nicks, or other discrepancies that would render the part unserviceable. i. Replace any unserviceable parts with new or serviceable parts and reassemble pressure relief valve. j. Bond sealing ring (7) to housing (8) using adhesive sealant, RTV-732 or equivalent. k. Insert housing (8) through mounting patch (9) and align screw holes. l. Install spring (5) over center shaft of piston (6). Seat spring in groove in piston (6). m. Install piston guide (4) in spider (3). Install piston guide and spider over piston (6), ensuring that spring (5) seats in piston guide (4). Ensure that spider (3) lies beneath mounting patch (9). n. Align new holes in spider (3) with screw holes in housing (8) and mounting patch (9). o. Place clamp plate (2) over mounting patch (9). Align screw holes in housing (8), spider (3), mounting patch (9) and clamp plate (2). p. Apply adhesive sealant, RTV-732 or equivalent, to threads of screws (1). q. Install screws (1) through clamp plate (2), mounting patch (9), spider (3), and housing (8). Torque screws (1) to 28 to 32 inlb using multiple spline key adapter, PN 22B19216, or equivalent, and torque screwdriver, or equivalent. r. Test pressure relief valve assembly as follows: (1) Inflate life raft assembly. (2) Slowly increase pressure in life raft assembly. The pressure relief valve should open between 2.35 and 2.65 PSIG. (3) Slowly decrease pressure in life raft assembly. The pressure relief valve should close between 2.25 and 2.55 PSIG. (4) If pressure relief valve requires adjustment, insert blade of screwdriver into slot in piston guide (4) and turn clockwise to increase pressure or counterclockwise to decrease pressure.

Do not allow epoxy cement to get into piston (6) through hole in center of slot on piston guide (4). s. Place a drop of epoxy cement, M11055, Style P, or equivalent, on spider threads at two locations on piston guide. Allow cement to cure for 4 hours. t. Test pressure relief valve in accordance with step p. u. Place pressure relief valve cover over pressure relief valve and secure with snap fasteners. 6.12.5 25-Man Repair or Replacement of Pressure Relief Valve Assembly, PN 22C23627-1. To repair or replace pressure relief valve PN 22C23627-1, proceed as follows: a. Loosen two setscrews (Figure 6-13, 1).

Cap (2) is under spring pressure. Remove cap carefully so as not to cause parts to fly around. NOTE Disassembly should be accomplished only to the extent necessary to effect the required repair. Index numbers are in disassembly order. b. Slowly release cap (2) while maintaining pressure. c. Remove spacer (4). d. Remove diaphragm insert (5) from body (6). e. Clean metal parts with dry cleaning solvent, MIL-PRF680, Type III, or A-A-59601-3B and blow dry with compressed air. f. Visually inspect disassembled parts for scratches, scoring, nicks, or other discrepancies that would render the part unserviceable. g. Replace any unserviceable parts with new or serviceable parts and reassemble pressure relief valve. h. Insert diaphragm insert (5) in body (6). i. Insert spacer (4), after diaphragm insert, in body (6). j. Position small end of spring (3) in insert diaphragm (5).

6-25

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 6-13.

Pressure Relief Valve Assembly, PN 22C23627-1

k. Place cap (2) over large end of spring (3) and turn clockwise one full turn. Do not tighten.

(4) If pressure relief valve requires adjustment, turn cap clockwise to increase pressure or counterclockwise to decrease pressure.

l. Test pressure relief valve assembly as follows: (1) Inflate life raft assembly. (2) Slowly increase pressure in life raft assembly. The pressure relief valve should open between 2.25 and 2.75 PSI.

m. Apply adhesive sealant, RTV-732 or equivalent, to threads of setscrews. Install and tighten setscrews. n. Test pressure relief valve in accordance with step 1.

(3) Slowly decrease pressure in life raft assembly. The pressure relief valve should close between 1.75 and 2.25 PSI.

SECTION IV LIFE PRESERVER REPAIR 6.13

LIFE PRESERVER REPAIR.

6.13.1 Repair/replace Cell Protector. Refer to Paragraph 3.8.2.2.2.

6.13.2.1 Replacing Oral Inflation Valve with Clamp. If it is determined that the oral inflation valve is restricted and needs to be replaced, proceed as follows: a. Deflate the life preserver.

6.13.2

6-26

Oral Inflation Valve Repair/replace.

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 b. Remove existing brass clamp being careful not to damage the inflation tube (remove brass clamp with diagonal pliers or equivalent).

6.13.2.3 Cementing Oral Inflation Valve to Oral Tube without Brass Clamp. This repair shall be done if oral tube separates or shows sign of separation from valve. To re-cement, proceed as follows:

c. Remove and discard defective valve. d. Clean the affected area of the oral tube and the replacement valve with toluene and, if needed, a wire brush. e. Install the serviceable valve and clamp in place. Use crimping pliers (local purchase) to secure clamp. Make sure you apply sufficient pressure on clamp with crimping pliers to prevent leakage. Replace duct tape or insulation sleeve (heat shrink), refer to Paragraph 6.13.2.2. f. Perform leakage test. Refer to Chapter 5. g. If oral inflation valve leaks, remove brass clamp and deflation valve. Cut off the inflation tube approximately 1/16 inch behind old clamp ring indentation. Do not cut more than 1/16-inch behind old clamp indentation because the replacement valve will not reach the sleeve on the life preserver tube. Repeat the above steps as necessary. If inner spring is visible in the tube and oral inflation valve does not fit properly, remove from service and condemn. h. The oral inflation valve, PN 101D, may be removed from any condemned life preserver/life raft and installed in place of the PN 800ROL valve. 6.13.2.2 Replacement or Attachment of Tape or Heat Shrink Over the Brass Clamp of the Oral Inflation Valve.

Toluene is flammable and may affect eyes, skin, and respiratory tract. Use in a well-ventilated area. Avoid prolonged breathing of vapors. Avoid eye and repeated skin contact. Keep away from sparks and flames. a. Clean the affected area of the oral tube and valve with toluene and wire brush. b. Apply two coats of adhesive, MIL-A-5540, Class 3, Form B to tube and valve, allowing 15 minutes drying time between coats. c. When second coat of adhesive has become tacky, connect the oral tube to the oral valve by sliding together. d. Allow to cure 24 to 48 hours prior to use. e. Perform leakage test. Refer to Chapter 5. 6.14

LPU-6/P LIFE PRESERVER REPAIR.

6.14.1 LPU-6/P Repair of Foam Rubber on Floor. To replace deteriorated foam rubber floors on LPU-6/P cots, proceed as follows: a. If portion of foam has come loose, re-cement to floor. b. If any holes exist, cut pieces of foam rubber material to fit and cement in place.

Toluene is flammable and may affect eyes, skin, and respiratory tract. Use in a well-ventilated area. Avoid prolonged breathing of vapors. Avoid eye and repeated skin contact. Keep away from sparks and flames. a. Remove defective tape or insulation sleeve (heat shrink) PN M23053/5-209-C and if any, clean oral inflation assembly with toluene. b. Replace insulation sleeve (heat shrink) ½ to 1 inch piece of insulation sleeve (heat shrink) to brass clamp using a heat gun or wrap ½ to 1 inch piece of like tape (duct) around brass clamp. Insulation sleeve (heat shrink) is the preferred method.

6.14.2 LPU-6/P Repair or Replacement of Securing Strap. To decrease width and increase length of securing straps, modify straps as follows: NOTE For all machine stitching, use stitch ASTM D6193, type 301, 7 to 11 stitches per inch unless otherwise specified. a. Cut strap at a point approximately 6 inches from end attached to flotation tube on cot.

6-27

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 NOTE Use of 2 inch nylon tape, MIL-T-5608, Type V, Class C may be used instead of cutting tape down the middle. b. Cut detached piece down to provide two lengths of equal width. c. Fold back all cut edges and stitch to provide a hem as wide as existing hem. d. Sew the two detached pieces together end-to-end, allowing approximately 1 inch overlap for stitching with nylon thread, V-T-295, Type I, Class A, Size E. NOTE If the newly-fabricated strap is made from the detached piece of existing securing strap, the length and width may vary. e. Center newly-fabricated strap to remaining 6 inch strap from step a. Sew together, allowing approximately 1 inch overlap for stitching, with nylon thread, V-T-295, Type I, Class A, Size E.

b. Cut a new window (using damaged window as a guide), approximately 13 inches by 8.5 inches. To facilitate sewing, allow ½ inch overlap on all edges. c. Cut seam strip, MIL-C-19002, Type II, Class 1, orange, 1/8 inch thick (as required), approximately 44 inches, allowing a 1 inch overlap on end. d. Fold and sew seam tape (using an EF-1 seam) to the window 1/8 inch from the edge of the seam tape using nylon thread, V-T-295, Type I, Class A, Size E, 7 to 11 stitches per inch (See Figure 6-14). e. Cement window with MIL-A-5540, Class 3 Form B, adhesive on the inside top portion of the hood. Refer to Paragraph 6.6.1. 6.15

LPU-3/P LIFE PRESERVER REPAIR.

6.15.1 LPU-3/P Replacement of Container Lacing Cord. To replace damaged container acing cord on LPU-3/P life preservers, proceed as follows: a. Remove lacing cord that is to be replaced. (Note amount of slack between life preserver and harness.)

6.14.3 LPU-6/P Replacement of Transparent Window. To replace transparent window, proceed as follows:

b. Cut a length of new lacing cord equal to lacing cord being replaced. Sear ends to prevent fraying.

NOTE

c. Replace LPU-3/P life preserver to harness assembly, allowing same amount of slack as previously noted. Tie off lacing using a binder knot.

Plastic sheet, 20 gauge, approximately 0.01 inch thick is commercially available through Industrial Rubber and Supply Inc. (206) 272-3244. a. To remove damaged window, carefully peel plastic window away from life preserver hood ensuring the hood material is not torn or damaged.

6-28

6.16

UPDATING CONFIGURATIONS.

Updating configurations of life rafts and life preservers shall be accomplished (Refer to Chapter 4).

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 6-14.

LPU-6/P Transparent Window

6-29/(6-30 blank)

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

CHAPTER 7 FOLDING AND PACKING SECTION I GENERAL 7.1

SCOPE.

This chapter provides folding and packing procedures for life raft and life preserver assemblies. Folding and packing of life raft and life preserver assemblies shall be accomplished by qualified personnel at the organizational/intermediate level of maintenance. The procedures detailed present a logical sequence to properly fold and pack equipment. Procedures shall be strictly adhered to. No willful neglect will be tolerated. a. Ensure equipment has been annotated and stowed with the appropriate DD Form(s) and AFTO Form(s). Refer to Chapter 1. b. Ensure (if applicable) equipment is properly donned or fitted. Refer to Chapter 2. c. Ensure (if applicable) equipment has proper environment, storage, special tools, and fabricated tools as needed. Refer to Chapter 3. d. Ensure (if applicable) equipment has been updated. Refer to Chapter 4. e. Ensure equipment is in serviceable condition. Refer to Chapters 5, 6, and 8 if needed. 7.1.1 Life Rafts. The folding and packing procedures provided in section II are for the following type of life rafts. •

•

F-2B Life Raft Assembly (20-Man).

•

25-Man Life Raft Assembly.

7.1.2 Life Preservers. The folding and packing procedures provided in Section IV are for the following life preservers: •

LPU-6/P Infant’s Floating Survival Cot.

•

A-A-50652 Life Preserver Assembly (Adult/Child).

•

LPU-3/P and LPU-10/P Life Preserver Assemblies (Aircrew).

7.1.3 Sea Rescue Kits. The folding and packing procedures for life rafts used with MA-1 and MA-2 sea rescue kits are contained in Section III. 7.1.4 Accessories and Survival Items. The selection of additional or removal of items to complete the kit will be left to the discretion of the MAJCOM. Refer to Chapter 1 for service/shelf life. MAJCOM may authorize the installation/ location of additional survival items and accessories through their operational instructions. Applying practical principle and a disciplined engineering process as outlined in AFI 631201, Assurance of Operational Safety, Suitability and Effectiveness (OSS&E) must support the authorization. There will be no duplication of items in the survival kit and vest when used together without approval of the MAJCOM.

LRU-1/P Life Raft Assembly (7-Man).

SECTION II LIFE RAFT ASSEMBLIES

7-1

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 7.2

LRU-1/P LIFE RAFT ASSEMBLY.

7.2.1 General. The LRU-1/P life raft assembly shall be folded and packed by qualified personnel at the organizational/intermediate level of maintenance. The LRU-1/P may be packed for an up- or down-pull, manual or automatic inflation configuration, depending on aircraft application. Consult applicable aircraft technical orders for proper procedure. See Figure 7-1.

b. Ensure survival items and life raft accessories have been inspected for damage and expiration in accordance with Chapter 5. Refer to Table 7-1 for items used. Close accessory container by rolling flap toward container and tie with tying tapes. NOTE The accessories listed in Table 7-1 are not issued as a complete unit. Items required will be requisitioned from appropriate property class. c. Ensure topping-off valves are closed finger tight. d. Ensure carbon dioxide cylinder assembly has been weight-checked in accordance with Paragraph 8.7. e. Attach valve cover on inflation valve. f. Attach carbon dioxide cylinder assembly to life raft manifold and torque to a value of 140 to 150 inlb. g. Lightly dust entire life raft assembly and carbon dioxide cylinder sling with talc, MIL-T-50036, Type T1, or A-A-59303.

Figure 7-1. 7.2.2

Routing of LRU-1/P Life Raft Pull Cable

h. Ensure sea anchor retention line is serviceable and securely attached using 15 foot ±6 inches length of nylon cord, MIL-C-5040, Type III. Replace if necessary. Refer to Chapter 6. Attach retention line to sea anchor bridle loop and to cross tapes using bowline knots. Fake line in 8 inch hanks and secure at each hank end with a rubber band, No. 32 or equivalent. Fold or roll sea anchor with the line to the outside of the roll and stow in cross tapes on bow of life raft.

Prefolding.

Packaged life raft assemblies shall not be thrown into trucks, trailers, or tractors for transportation between areas. Utilization of storage/transportation bins is mandatory. a. Ensure life raft, carrying case, and accessory container has been inspected in accordance with Chapter 5. Table 7-1.

Accessories and Survival Items, LRU-1/P Life Raft Assembly

Accessory or Survival Item1 Accessories Container Hand Pump, Type III Adapter, Pump

Repair Kit, Life Raft w/Pliers

2

First Aid Kit, Survival Escape and Evasion3 Radio Set 4 , 5

7-2

Change 1

i. Using a 5 foot length of nylon cord, MIL-C-5040, Type III tie one end to packed accessory container and other end to oarlock opposite inflation assembly with bowline knots.

Quantity Required 1 1 1

Reference Number

6

63A80H4 MIL-P-8258 MS21962(ASG) -or53B6241 45B18979-2 -or67C46306-20 05-1764

1

AN/PRC 90-2

1

Manufacturer’s Code or NSN 4220-00-289-4326 4320-00-097-4580 4730-00-092-5823

4220-00-693-1470

6545-01-534-0894 5820-01-238-6603MH

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 Table 7-1.

Accessories and Survival Items, LRU-1/P Life Raft Assembly - Continued

Accessory or Survival Item1

Quantity Required 1

Reference Number

Manufacturer’s Code or NSN

MIL-M-18371

6350-00-299-6197

4

LD165580

1370-00-309-5028

4 1 1 2 2 1 1 3

DL3139734 MIL-W-1053 — MIL-D-5531 MIL-D-5850 MS2300(ASG) 60C6037 MIL-F-43231

1370-01-030-8330 8465-00-254-8803 6230-Class 4610-00-372-0592 4610-00-242-7639 4220-00-759-4934 1670-00-779-1253MH 8970-00-082-5665

Water Storage Bag, Size A Survival Manual Bailing Sponge, Size 8, Type II Bailing Bucket 12 Fishing Kit

3 1 1 1 1

8465-00-485-3034 — 7920-00-240-2555 2090-00-485-3006

Tarpaulin, Light Weight, Size 77 Sunburn Ointment 13 Blanket, Aluminized 14

1 7 3

MIL-B-8571 AFP 64-5 L-S-00626 44D9376 MIL-F-6218 -orA-A-58025 MIL-T-7249 MIL-S-37800 MIL-B-36964

Nylon Cord, Type I (30 ft length) Compass, Lensatic 4, 15 Oars, Metal, Sectional Dye Marker

2 1 2 4

MIL-C-5040 MIL-C-10436 MS26529-2 MIL-S-17980

Signal Mirror, Search and Rescue MK-III 6

Distress Signal (Day/Night) MK-13, MOD 0 5, 7 -orMK-124, MOD 0 Whistle, Police, Plastic Light, Distress Marker 5,8 Desalter Kit, Type MK-2 Solar Distillation Kit, Class B 9 Adapter Distillation Bag Knife 10 Food Packet, Survival, General Purpose

5,

11

4220-00-244-0764 8340-00-485-3012 6505-01-121-2336 7210-00-935-6665 7210-00-935-6666 7210-00-935-6667 4020-00-240-2154 6605-01-196-6971 2040-00-485-3010 6850-00-270-9986

Change 1

7-3

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 Table 7-1.

Accessories and Survival Items, LRU-1/P Life Raft Assembly - Continued

Accessory or Survival Item1 Meclizine Hydrochloride

14

Quantity Required 1

Reference Number ND000662-2120-66

Manufacturer’s Code or NSN 6505-00-926-2111

1

Items are listed in order of importance. The repair kit will consist of four each repair plugs and pliers. These items will be packaged as a kit in conformance with drawing 45B18979-2 and/or 67C46308 prior to installation in the accessory kit. 3 First aid kits 6545-01-521-8522, 6545-01-521-8530 or 6545-01-521-8528 will be used until First Aid Kit, Survival Escape and Evasion (NSN 6545-01-534-0894) is available for use. 4 The PRC-90 series survival radio or survival radio authorized in accordance with TO 14-1-1 shall be installed in all kits which are installed in aircraft except those whose mission required a special radio, refer to the 31R Series tech orders. Spare radio battery may be installed with MAJCOM approval. When radios are not available or until receipt of radios, the use of beacons is authorized. Personnel locator beacons will not be installed in life rafts with flexible antennas or reinforcement brackets or unneeded parts. Remove flexible antennas or reinforcement bracket or unneeded parts from beacons and return to serviceable stock. When installing beacons in lieu of radios, beacon on-off switch shall be in the off position to preclude accidental activation, refer to 31R Series tech orders. 5 Items so marked will be requisitioned from the appropriate property classes to complete the kit. 6 Signal Mirror, when exhausted or unserviceable use 6350-00-261-9772. 7 Two M131 signals can be used in place of two MK-13 flares. 8 Light distress marker SDU-5/E may be used at option of MAJCOM. If the SDU-5/E is installed, flash guard PN FG-1C and infrared lens PN MXU-507/E are required only in those kits which are installed in aircraft whose mission assignment is in a combat area. Refer to TO 14S10-2-2. 9 Distillation kit shall be used until exhausted or unserviceable. At option of the MAJCOM, distillation kits may be replaced on a one-for-one basis with desalter kits or 3 each 10 ounce cans of water for each distillation kit. 10 Knife assembly PN 60C6037 may be used if knife PN 45BI8786 is not available. 11 Rations, survival type ST8970, shall be used until exhausted or unserviceable. 12 Bailing Bucket, when exhausted or unserviceable use 2090-01-345-2832. 13 To prevent melting ointment from damaging other survival items, ointment may be placed in polyethylene, interlocking seal bags, 8105-00-837-7753. 14 To be installed at option of MAJCOM. 15 Refer to TO 00-110N-Series before using lensatic compasses. 2

NOTE

NOTE

To repair/replace pull cable assembly, refer to Chapter 6.

There are two configurations for the pull cable assembly authorized for use with carrying case PN 62A82H6. See Figure 7-2.

j. (Manual) Tie 20 foot retaining line of pull cable assembly (Figure 7-2) to stern tiller mount with a bowline knot.

7-4

Change 1

7.2.3

Folding.

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 a. Ensure prefolding procedures have been performed in accordance with Paragraph 7.2.2. b. Fold life raft in accordance with Figure 7-3. NOTE To fold and pack LRU-1/P life raft assembly for use in MA-1 sea rescue kits, refer to Section III.

Ensure aircraft life raft compartment is free of oil, dirt, water, and any other foreign substance that may damage life raft. NOTE Prior to installation, manuals covering the particular aircraft must be consulted for proper installation. Detailed procedures may vary with each type of aircraft. d. (Automatic) Remove life raft and accessory container from carrying case. e. (Automatic) The stowage rope shall be fabricated from 100 pound breaking strength nylon cord, MIL-C-5040, Type I. The stowage rope retains deployed life raft to aircraft during emergency egress but will easily break if aircraft sinks or life raft is accidentally inflated during flight. f. (Automatic) Place life raft and accessory container into aircraft life raft compartment. Unroll life raft to point necessary to allow connection of release mechanism and tying of stowage rope to life raft lifeline with a bowline knot.

Figure 7-2. 7.2.4

Pull Cable Assemblies

Packing.

a. Place folded life raft in carrying case PN 62A82H6. See Figure 7-4. b. (Manual) Tie red 5 foot actuating lines pull cable assembly to loop end of inflation valve cable with a bowline knot. See Figure 7-4. c. (Manual) To close carrying case PN 62A82H6, shown in Figure 7-5, place grommets over locking cones and insert cable pins into locking cones. Safety-tie first, center, and last cable pins by passing a 12 inch length of nylon thread, V-T-295, Type I, Class A, Size E under cable pins; then tie thread to cable with 3 or 4 half-hitches and lock with 2 overhand knots. Complete closure by securing snap fasteners of cable protector flap closed. Position pull cable handle under protective flap on carrying case end flap and secure remaining snap fasteners.

Ensure life raft is installed correctly. Avoid forcing compartment door over life raft. Constant pressure may spring or bend lock, causing failure of emergency release mechanism. g. (Automatic) When compartment is of insufficient size to permit installation of complete life raft assembly, remove as many life raft accessories from accessory container as necessary to properly close life raft compartment door. In removing any articles and repacking accessory container, articles that remain in accessory container shall be selected in the order of their relative importance. Refer to Table 7-1. Remaining items of list will be placed in a second accessories container. Tying tapes of both containers will be tied and containers sealed with seal, PN MS51938.

7-5

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 7-3.

7-6

Folding Procedure, LRU-1/P Life Raft

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 h. (Automatic) The first container will be installed in the compartment with the life raft. The second container will be stowed in the fuselage of the aircraft in such a manner and position that it will be readily available to personnel abandoning the aircraft. NOTE DD Form 1574 may be secured to data pocket with a length of nylon cord, MIL-C-5040 Type I. i. Complete DD Form 1574 and insert into data pocket. 7.3

F-2B LIFE RAFT ASSEMBLY.

7.3.1 General. The F-2B life raft assembly shall be folded and packed by qualified personnel at the organizational/intermediate level of maintenance. The F-2B may be packed for an up- or down-pull, manual or automatic inflation configuration, depending on aircraft application. See Figure 7-6.

Figure 7-4.

Placing Life Raft in Carrying Case

Figure 7-6.

Figure 7-5.

Routing of F-2B Life Raft Pull Cable

Life Raft Packed in Carrying Case

7-7

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 7.3.2

NOTE

Prefolding.

The accessories listed in Table 7-2 through 7-4 are not issued as a complete unit. Items required will be requisitioned from appropriate property class. Extreme caution/care must be taken during the packing to ensure that all connections are proper installed. Personnel must be protected to prevent injury. Cable shall be stowed inside snap cover of the cylinder sling and shall not be disturbed during packing to prevent an inadvertent inflation that could result in damage to equipment, and injury or death to personnel. Personnel working with or near dangerous pressures must be protected by a safety shield or located at a distance sufficient to prevent injury.

c. Ensure topping-off valves are closed finger tight. d. Ensure vent manifold streamer or vent valve streamer is installed. To fabricate red warning streamers, refer to Paragraph 3.8.3.2.1. On life rafts equipped with vent manifold or a self-vent valve, proceed as follows: (1) If not attached, install vent manifold streamer to vent manifold assembly. (2) Streamer shall remain attached to vent manifold until folded life raft is packed in life raft case/ container. At that point remove streamer as follows:

Packaged life raft assemblies shall not be thrown into trucks, trailers, or tractors for transportation between areas. Utilization of storage/transportation bins is mandatory.

(a) Vent manifold PN 9153 will be on the open position, streamer removed and moisture cap PN 2066 installed. See Figure 7-13. (b) Manifold PN C-50980 will be in the open position. Apply inward pressure on the head of the breather piston in the center of the stainless steel nut until re-seated. Listen for two (2) popping sounds.

NOTE •

The 20-Man VPLR is obsolete and must be replaced with an F-2B or converted to an F-2B before the end of the 20-Man VPLR 10 years service life.

•

At every third inspection cycle, the life raft will be flipped over prior to repack. Note that the illustration or figure within Chapter 7 may face the opposite direction as depicted.

(c) Valve (self-venting) PN 9864-05. Remove streamer by unsnapping snap fastener. e. Ensure carbon dioxide cylinder assembly has been weight-checked in accordance with Paragraph 8.7.

a. Ensure life raft, carrying case, inflation system and accessory container have been inspected, tested, replaced or repaired in accordance with applicable chapters. b. Ensure survival items and life raft accessories have been inspected for damage and expiration in accordance with Chapter 5. Refer to Table 7-2 through 7-4 (depending on aircraft application) for location of items used. Table 7-2. Accessory or Survival Item1 Accessories Container Hand Pump, Type III Adapter, Pump

Repair Kit, Life Raft w/Pliers2

7-8

f. Lightly dust inside of applicable cylinder cover PN 53D3799 or 63A80H8, with talc, MIL-T-50036, Type T1, or A-A-59303 to avoid adhesion of cover to cylinder. Install cylinder into cover with housing cable exiting through larger opening in cover and valve nozzle through smaller opening. Wrap flaps on cover over valve and secure the tying tapes.

Accessories and Survival Items, F-2B Life Raft Assembly Quantity Required 1 1 1

1

Reference Number 63A80H4 MIL-P-8258 MS21962(ASG) -or53B6241 45B18979-2 -or-

Manufacturer’s Code or NSN 4220-00-289-4326 4320-00-097-4580 4730-00-092-5823

4220-00-693-1470

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 Table 7-2.

Accessories and Survival Items, F-2B Life Raft Assembly - Continued

Accessory or Survival Item1

First Aid Kit, Survival Escape and Evasion3 Radio Set 4 , 5 Signal Mirror, Search and Rescue MK-III 6 Distress Signal (Day/Night) MK13, MOD 0 5, 7 -orMK-124, MOD 0 Whistle, Police, Plastic Desalter Kit, Type MK-2 Solar Distillation Kit, Class B 8 Adapter Distillation Bag Survival Straw, Pocket Purifier 9 Knife 10 Food Packet, Survival, General Purpose 5, 11 -orRations, Survival, Type ST Water Storage Bag, Size A Survival Manual Bailing Sponge, Size 8, Type II Bailing Bucket 12 Fishing Kit

Quantity Required

Reference Number

6

67C46306-20 05-1764

6545-01-534-0894

1 1

AN/PRC 90-2 MIL-M-18371

5820-01-238-6603MH 6350-00-299-6197

4

LD165580

1370-00-309-5028

4 1 5 4 1 20 1 5

DL3139734 MIL-W-1053 MIL-D-5531 MIL-D-5850 MS2300(ASG) PP-80-C 60C6037 MIL-F-43231

1370-01-030-8330 8465-00-254-8803 4610-00-372-0592 4610-00-242-7639 4220-00-759-4934 4610-01-178-3431 1670-00-779-1253MH 8970-00-082-5665

5 1 2 1 1

8465-00-485-3034 — 7920-00-240-2555 2090-00-485-3006

Canopy Rods Canopy Mast Equalizer Clamps 15 Dye Marker Nylon Cord, Type I (30 ft length) Compass, Lensatic 5, 16 Blanket, Aluminized 9

6 1 2 4 1 1 3

MIL-B-8571 AFP 64-5 A-A-2073 44D9376 MIL-F-6218 -orA-A-58025 MIL-S-37800 — MIL-L-009131 (63A80H2-1) Paragraph 3.4 MIL-L-9131 (63A80H3-2) MIL-L-9131 (63A80H3-1) 53B6244 MIL-S-17980 MIL-C-5040 MIL-C-10436 MIL-B-36964

Meclizine Hydrochloride 9 Light Safety Cyalume lightsticks

1 3

ND000662-2120-66 2172-A-1

13

Sunburn Ointment Light, Distress Marker Canopy

5, 14

Manufacturer’s Code or NSN

6 1 1

4220-00-244-0764 6505-01-121-2336 6230-Class 4220-00-803-9478 4220-00-803-9477 2040-00-883-2002 4220-00-329-7248 6850-00-270-9986 4020-00-240-2154 6605-01-196-6971 7210-00-935-6665 7210-00-935-6666 7210-00-935-6667 6505-00-926-2111 6260-01-086-8077

9

95270-58

Change 1

7-9

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 Table 7-2.

Accessories and Survival Items, F-2B Life Raft Assembly - Continued

Accessory or Survival Item1

Quantity Reference Number Manufacturer’s Code or NSN Required * Time Change Items may be installed in the outer kits. Each crewmember should be fully indoctrinated with the location of time change items so they will act automatically to the situation. 1

Items are listed in order of importance. The repair kit will consist of four each repair plugs and pliers. These items will be packaged as a kit in conformance with drawing 45B18979-2 and/or 67C46308 prior to installation in the accessory kit. 3 First aid kits 6545-01-521-8522, 6545-01-521-8530 or 6545-01-521-8528 will be used until First Aid Kit, Survival Escape and Evasion (NSN 6545-01-534-0894) is available for use. 4 The PRC-90 series survival radio or survival radio authorized in accordance with TO 14-1-1 shall be installed in all kits which are installed in aircraft except those whose mission required a special radio, refer to the 31R Series tech orders. Spare radio battery may be installed with MAJCOM approval. When radios are not available or until receipt of radios, the use of beacons is authorized. Personnel locator beacons will not be installed in life rafts with flexible antennas or reinforcement bracket or unneeded parts. Remove flexible antennas or reinforcement bracket or unneeded parts from beacons and return to serviceable stock. When installing beacons in lieu of radios, beacon on-off switch shall be in the off position to preclude accidental activation, refer to 31R Series tech orders. 5 Items so marked will be requisitioned from the appropriate property classes to complete the kit. 6 Signal Mirror, when exhausted or unserviceable, use 6350-00-261-9772. 7 Two M131 signals can be used in place of two MK-13 flares. 8 Distillation kit shall be used until exhausted or unserviceable. At option of the MAJCOM, distillation kits may be replaced on a one-for-one basis with desalter kits 3 each 10 ounce cans of water or 12 packages of Flexible Packaged Drinking Water (FPDW) for each distillation kit. 9 To be installed at MAJCOM option. When exhausted 6850-00-985-7166. 10 Knife assembly PN 60C6037 may be used if knife PN 45BI8786 is not available. 11 Rations, survival type ST8970, shall be used until exhausted or unserviceable. 12 Bailing Bucket, when exhausted or unserviceable, use 2090-01-345-2832. 13 To prevent melting ointment from damaging other survival items, ointment may be placed in polyethylene interlocking seal bags, 8105-00-837-7753. 14 Light distress marker SDU-5/E may be used at option of MAJCOM. If the SDU-5/E is installed, flash guard PN FG-1C and infrared lens PN MXU-507/E are required only in those kits which are installed in aircraft whose mission assignment is in a combat area. Refer to TO 14S10-2-2. 15 Not packed in accessory kit; are stored in pocket attached to life raft floor. 16 Refer to TO 00-110N-Series before using lensatic compasses. 2

Table 7-3. Items Packed in Inner Container for KC-135 Aircraft (F-2B only) •

•

For life rafts equipped with vent manifold, prior to attachment of cylinder to life raft, ensure a serviceable vent manifold coupling gasket is installed and life raft coupling units are firmly tightened to vent. For life rafts utilizing Valve Assembly, PN 9864-05, prior to attachment of cylinder to life raft, ensure two serviceable gaskets (Figure 8-4, 7) are installed between life raft and valve assembly. NOTE

For E-3A aircraft, installed life raft cylinder cover requires rework in accordance with Chapter 6. 7-10

Change 1

Accessory or Survival Item First Aid Kit Desalter Kit, Type MK-2 Distillation Kit, with Adapter Distress Signal (Day/Night) MK-13, MOD 0 Rations, Survival Sunburn Ointment Bailing Sponge, Size 8, Type II Water Storage Bags, Size A Light, Distress Marker Canopy with Mast and Rods

Quantity Required 3 3 1 2 3 3 1 2 1 1

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 NOTE

Table 7-3. Items Packed in Inner Container for KC-135 Aircraft (F-2B only) - Continued Accessory or Survival Item Compass, Lensatic Fishing Kit Radio Set

Quantity Required 1 1 1

For KC-135 aircraft life raft configuration, attach another 20 foot length of nylon cord, MIL-C-5040, Type III for outer accessory kit retention. m. At cylinder assembly, fold lower life raft tube under and away from cylinder, and upper life raft tube over and away from cylinder.

NOTE

NOTE

Time Change Items may be packed in the outer container. Each crewmember should be fully indoctrinated with the location of time change items so they will act automatically to the situation.

•

To repair/replace life raft actuating and retaining line assembly, refer to Chapter 6.

•

To repair/replace pull cable assembly, refer to Chapter 6.

g. Attach cylinder valve to manifold coupling nut and torque all coupling nuts to 140 to 150 inlb. Ensure there are no twists in life raft fabric. h. Lace cylinder sling closed and snap cover over lacing. i. Lightly dust entire life raft assembly with talc, MIL-T50036, Type T1, or A-A-59303. j. Ensure sea anchor retention line is serviceable and securely attached using 25 foot ±6 inches length of nylon cord, MIL-C-5040, Type III. Replace if necessary. Refer to Chapter 6. Attach retention line to sea anchor bridle loop and to survivor holding handle on life raft nearest sea anchor pocket using bowline knots. Fake line in 8 inch hanks with line to outside of folded sea anchor and stow in sea anchor pocket. Secure each end of the hank with rubber bands, No. 32 or equivalent. To fold sea anchor, See Figure 7-7. The outer accessory kit retention line board should be fabricated with alodined sheet metal or equivalent, and all edges rounded and smooth. The outer accessory kit retention line board should be 1/8 by 3½ by 7 3/4 inches to equal 8 inch hanks. k. Ensure all sharp or pointed metallic accessories and survival items are wrapped with protective material and secured with rubber bands. Stow items into accessory container(s) in a manner ensuring a tight pack. Close accessory container by rolling flap toward container and tie with tying tapes. l. Using a 20 foot ±6 inches length of nylon cord, MILC-5040, Type III for an accessory kit retention line, tie one end to nearest handle or outer lifeline in area between bottom of cylinder and boarding ramp with a bowline knot.

Figure 7-7.

Folding Procedure, Sea Anchor

n. Tie the 20 foot retaining line of the actuating and retaining line assembly or the 20 foot retaining line of the pull cable assembly (Figure 7-8) to same location as accessory kit retention line. o. Remove equalizer clamp installed during inspection. 7.4

F-2B LIFE RAFT ASSEMBLY PRE-PACKING. NOTE If required, repair/replace life raft pull cable assembly and actuation and retention line assembly. Refer to Chapter 6 and Figure 7-8. To fabricate aircraft retention streamer, refer to Paragraph 3.8.3.2.1.

a. Ensure carrying case/container, and accessory container have been inspected, tested, replaced or repaired in accordance with the applicable chapter. b. Ensure survival items and life raft accessories have been inspected for damage and expiration in accordance with Chapter 5. Refer to Table 7-2.

7-11

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 c. Ensure proper configuration in accordance with Chapter 4. d. Ensure all sharp or pointed metallic accessories and survival items are wrapped with protective material and secured with rubber bands. Stow items into accessory container in a manner ensuring a tight pack. Close accessory container by rolling flap toward container and tie with tying tapes. 7.4.1

Folding and Packing.

7.4.1.1 Folding Procedures-Applicable to All F-2B Life Raft Assembly Configurations Except for C-130 and T-43A Aircraft. To fold F-2B life raft assembly, proceed as follows: NOTE To fold and pack F-2B life raft assembly for use in MA-2 sea rescue kits, refer to Section III. a. Ensure prefolding procedures have been performed in accordance with Paragraph 7.3.2. b. Fold life raft in accordance with Figure 7-9. c. Proceed with the final packing procedures applicable to each life raft configuration as outlined in the following paragraphs. 7.4.1.2 Packing Procedures-Applicable to Carrying Cases PN 63A80H6 and 50H3501-8, Manual Inflation. To pack F-2B life raft assembly in carrying cases PN 63A80H6 and 50H3501-8, proceed as follows:

b. Ensure folding procedures have been performed in accordance with Paragraph 7.4.1.1. NOTE Accessory containers packed within life raft carrying case require no safety ties. c. Place accessory container into bottom of carrying case. d. Accordion-fold life raft back and forth on floor next to carrying case. Ensure carbon dioxide cylinder is on top of assembly. e. Route outer kit retention line to exit end of case opposite actuation handle. Tie free end of accessory container retention line to accessory container handles with a bowline knot. f. Fake all surplus line of accessory container retention line and life raft retaining line between connecting points in 1 foot hanks and secure at each hank end with a rubber band, No. 32 or equivalent. g. Tie the red 5 foot actuating line of the actuating and retaining line assembly or the red 5 foot actuating line of the pull cable assembly to loop end of inflation valve cable with a bowline knot. See Figure 7-8. NOTE There are two configurations for the pull cable assembly authorized for use with carrying case 63A80H6. See Figure 7-8. h. Install pull cable assembly as shown in Figure 7-10. i. Place folded life raft in carrying case on top of accessory container. See Figure 7-11.

Packaged life raft assemblies shall not be thrown into trucks, trailers, or tractors for transportation between areas. Utilization of storage/transportation bins is mandatory. a. Ensure prefolding procedures have been performed in accordance with Paragraph 7.3.2.

7-12

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 7-8.

F-2B Life Raft Actuating and Retaining Line and Pull Cable Assemblies

7-13

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 7-9.

7-14

Folding Procedure, F-2B Life Raft Assembly

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 j. To close carrying case, PN 63A80H6, place grommets over locking cones and insert cable pins into locking cones. Safety-tie first, center, and last cable pins by passing a 12 inch length of nylon thread, V-T-295, Type I, Class A, Size E under cable pins. Tie thread to cable with 3 or 4 half-hitches and lock with 2 overhand knots. See Figure 7-12. k. Secure snap fasteners of cable protector flap and position pull cable assembly handle under protector flap. If installed, remove vent manifold or vent valve streamer, refer to Paragraph 7.3.2, step d. (2). Secure remaining snap fasteners. l. To close carrying case, PN 50H3501-8, secure top snap fasteners. If installed, remove vent manifold or vent valve streamer, Refer to Paragraph 7.3.2, step d.(2). See Figure 7-13. Secure remaining snap fasteners. Snap handle to carrying case end flap. Safety-tie assembly by passing a single strand of nylon thread, V-T-295, Type I, Class A, Size E through each eyelet; tie ends with a square knot and seal free ends with a seal, PN MS51938. See Figure 7-14. NOTE

Figure 7-10. Typical Installation of Pull Cable Assembly, PN 63A80H6

Figure 7-11.

DD Form 1574 may be secured to data pocket with a length of nylon cord, MIL-C-5040, Type I. m. Complete DD Form 1574 and insert into data pocket.

Placing Life Raft in Carrying Case

7-15

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 7-12.

F-2B Life Raft Packed in Carrying Case, PN 63A80H6

Figure 7-13.

7-16

Vent in Open and Closed Position, PN 9153

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 packed accessory container. Stencil carrying case 1 inch letters to indicate F-2B life raft installed. c. Place survival items listed in Table 7-3 in inner accessory container and close by rolling flap towards container and tie with tying tapes. NOTE To provide for rigidity and protection of items stored in outer container, a fiberboard box, approximately 23 x 10 x 7 inches, can be used at the option of the using activity. d. Place remaining survival items listed in Table 7-2 in outer accessory container and close by rolling flap towards container and tie with tying tapes. NOTE Accessory containers placed outside life raft case require safety tie. Figure 7-14.

F-2B Life Raft Packed in Carrying Case PN 50H3501-8

7.4.1.3 Packing Procedures for F-2B Life Raft Assembly When Packed in LRU-1/P Life Raft Carrying Case PN 62A82H6-Applicable to KC-135 Aircraft, Manual Inflation. When the F-2B life raft assembly is carried or stowed inside KC-135 aircraft, special packing procedures shall be employed so that it will pass through emergency exit hatches. If life raft has been packed in carrying case PN 63A80H6 or 50H3501-8, it will be removed and packed in LRU-1/P life raft carrying case PN 62A82H6 in accordance with the following procedures:

e. Safety-tie outer accessory container using three lengths of nylon cord, V-T-295, Type I, Class A, Size 3 with a 27 pound breaking strength. Route one length of cord tightly around center and one each approximately 5 inches from end of container (route cord through tape guides). Tie ends with a square knot and seal with a seal, PN MS51938. f. Place inner accessory container into bottom of carrying case. g. Accordion-fold life raft back and forth on floor next to carrying case. h. Tie free end of inner accessory container retention line to inner accessory container handles with a bowline knot.

Packaged life raft assemblies shall not be thrown into trucks, trailers, or tractors for transportation between areas. Utilization of storage/transportation bins is mandatory. a. Ensure prefolding procedures have been performed in accordance with Paragraph 7.3.2, except do not pack accessory container at this time. b. Ensure folding procedures have been performed in accordance with Paragraph 7.4.1.1. NOTE When F-2B life raft is used with LRU-1/P life raft carrying case PN 62A82H6, two accessory containers are required because bulk is too great after reduction in size of carrying case to accept a fully-

i. Route outer kit retention line to exit end of case opposite actuation handle. Tie free end of outer accessory container retention line to accessory container handles with a bowline knot. j. Fake all surplus line of inner accessory container retention line and life raft retaining line between connecting points in 1 foot hanks and fake surplus line of outer accessory container retention line between connecting points in 6 inch hanks and secure all three lines at each hank end with a rubber band, No. 32 or equivalent. The outer accessory kit retention line board should be fabricated with alodined sheet metal or equivalent, and all edges rounded and smooth. The outer accessory kit retention line board should be 1/8 by 3½ by 5 3/4 inches to equal 6 inch hanks.

7-17

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 k. Tie the red 5 foot actuating line of the pull cable assembly to loop end of inflation valve cable with a bowline knot. See Figure 7-8. NOTE There are two configurations for the pull cable assembly authorized for use with carrying case PN 62A82H6. See Figure 7-8. l. Install pull cable assembly as shown in Figure 7-15. m. Place folded life raft into carrying case on top of inner accessory container. See Figure 7-16.

Figure 7-16.

Placing Life Raft in Carrying Case

n. To close carrying case PN 62A82H6, place grommets over locking cones and insert cable pins into locking cones. Safety-tie first, center, and last cable pins by passing a 12 inch length of nylon thread, V-T-295, Type I, Class A, Size E under cable pins. Tie thread to cable with 3 or 4 half-hitches and lock with 2 overhand knots. See Figure 7-17. o. Secure snap fasteners of cable protector flap and position pull cable assembly handle under protector flap. If installed, remove vent manifold or vent valve streamer. Refer to Paragraph 7.3.2, step d. (2) and Figure 7-13. Secure remaining snap fasteners. Figure 7-15.

7-18

Typical Installation of Pull Cable Assembly

p. (KC-135 Only) Place outer accessory container alongside packaged life raft.

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 NOTE

NOTE

DD Form 1574 may be secured to data pocket with a length of nylon cord, MIL-C-5040, Type I.

If installed, remove vent manifold or vent valve streamer, Refer to Paragraph 7.3.2, step d. (2).

q. Complete DD Form 1574 and insert into data pocket.

c. Pack life raft into stowage box in accordance with Figure 7-18. NOTE DD Form 1574 may be secured to data pocket with a length of nylon cord, MIL-C-5040, Type I. d. Complete DD Form 1574 and insert into data pocket. 7.4.2 Folding and Packing Procedures for F-2B Life Raft Assembly Applicable to C-130 Aircraft, Remote Inflation. To fold and pack F-2B life raft assembly used in C-130 aircraft wing wells, proceed as follows:

Packaged life raft assemblies shall not be thrown into trucks, trailers, or tractors for transportation between areas. Utilization of storage/transportation bins is mandatory. a. Ensure prefolding procedures have been performed in accordance with Paragraph 7.3.2. NOTE Figure 7-17.

F-2B Life Raft Packed in Carrying Case PN 62A82H6

7.4.1.4 Packing Procedures for F-2B Life Raft Assembly Applicable to E-3A Aircraft, Manual Inflation. To pack F-2B life raft assembly used in E-3A aircraft, proceed as follows:

Packaged life raft assemblies shall not be thrown into trucks, trailers, or tractors for transportation between areas. Utilization of storage/transportation bins is mandatory. a. Ensure prefolding procedures have been performed in accordance with Paragraph 7.3.2. b. Ensure folding procedures have been performed in accordance with Paragraph 7.4.1.1, except after last fold, adjust the width of folded life raft to approximately 31 inches.

•

The following sequence shall be followed for a left wing installation. Reverse life raft for right wing installation. To utilize life raft wing-well liner, PN 371501-8 for both right- and left-hand wing installations, duplicate present carbon dioxide cylinder neck cutout on opposite end of cylinder cradle.

•

To fabricate packing frame to pack F-2B life raft assembly for use in C-130 aircraft, refer to Paragraph 3.8.3.2.3.

•

MAJCOM OPTION: To facilitate or assist during the packing/stowing of the life raft, vent streamer may be attached until folded life raft is packed and aircraft compartment door is ready for closing. At this time, if installed, remove vent manifold or vent valve streamer, refer to Paragraph 7.3.2, step d. (2).

b. Fold life raft in accordance with steps 1 through 4 of Figure 7-19.

7-19

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 7-18.

7-20

Packing Procedure, F-2B Life Raft Assembly, E-3A Aircraft (Sheet 1 of 2)

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 7-18.

Packing Procedure, F-2B Life Raft Assembly, E-3A Aircraft (Sheet 2)

7-21

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 7-19.

7-22

Folding and Packing Procedures, F-2B Life Raft Assembly, C-130 Aircraft (Sheet 1 of 2)

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 7-19.

Folding and Packing Procedures, F-2B Life Raft Assembly, C-130 Aircraft (Sheet 2)

7-23

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 c. Install life raft case/container, PN 66E46934-1 (-2 for right-hand installation) into packing frame.

NOTE Fabricate aircraft retention streamer in accordance with Paragraph 3.8.3.2.1. To fabricate life raft-toaircraft retention line, refer to Chapter 6.

folds to make life raft as compact as possible. Place accessory container between last and next-to-last fold as shown in step 6 of Figure 7-19.

g. Fold front and back flaps of life raft case/container over life raft and carbon dioxide cylinder. Secure snap fasteners.

d. Tie the life raft-to-aircraft retention line to survivor holding handle or outer lifeline with a bowline knot in area between bottom of the cylinder and boarding ramp. On opposite end, attach locally-fabricated aircraft retention streamer (see Figure 3-10 and Paragraph 3.8.3.2.1) which shall remain attached until aircraft retention line is attached to aircraft. Fake excess aircraft retention line in 8 inch hanks and secure at each hank end with a rubber band, No. 32 or equivalent and place on folded life raft. e. Pull free end of life raft (end opposite carbon dioxide cylinder) up into packing frame and life raft case/container. Carefully push this first fold of life raft to bottom of packing frame step 5 of Figure 7-19. f. Attach 20 foot ±6 inches accessory container line to handles of accessory container with a bowline knot. Fake excess accessory line in 12 inch hanks and secure at each hank end with a rubber band, No. 32 or equivalent and place on folded life raft. Accordion-fold remainder of life raft into case/container. Smooth all

7-24

h. Tie back tab of life raft case container with bowline knot using cotton cord 8/4, V-T-276, Type V or A-A52094. Fold side flaps over and lace cotton cord 8/4 up

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 thru first two grommets and down thru the next two, continue until you get to the front tab and route cord up thru the grommet. Pull cotton cord 8/4 from bottle end to second grommet opposite bottle and secure with 3 or 4 half hitches. Position aircraft retention streamer and, if installed, vent manifold or vent valve streamer on top of packed life raft assembly.

liners. Ensure same contours are maintained and strap iron hangers, locally fabricated, are used to support carbon dioxide cylinder in lieu of cradle. j. Lift packed life raft from packing frame by sling and place in storage bin for transportation to aircraft. Use the appropriate tech order/job guide 1C-130-series for aircraft installation and removal of life raft. 7.4.3 Folding and Packing Procedures for F-2B Life Raft Assembly Applicable to T-43A Aircraft, Manual Inflation. To fold and pack F-2B life raft assembly used in T-43A aircraft, proceed as follows:

Packaged life raft assemblies shall not be thrown into trucks, trailers, or tractors for transportation between areas. Utilization of storage/transportation bins is mandatory. a. Ensure prefolding procedures have been performed in accordance with Paragraph 7.3.2. NOTE If installed, remove vent manifold or vent valve streamer, refer to Paragraph 7.3.2, step d.(2). The following procedures apply to Figure 7-20, unless otherwise specified. NOTE DD Form 1574 may be secured to data pocket with a length of nylon cord, MIL-C-5040, Type I. i. Complete DD Form 1574 and insert into data pocket.

b. Lay life raft out flat as shown in step 1. c. Fold the boarding ramp bottom of cylinder over the tube toward the center of life raft as shown in step 3. d. Fold the edge of life raft in to the edge of the floor support, keeping the fold approximately parallel with the center line of the life raft through the inflation cylinder as shown in step 3.

Aircraft retention streamers shall remain attached until aircraft retention line is attached during aircraft installation. If installed, vent manifold or vent valve shall remain attached until folded life raft is packed and aircraft compartment door is ready for closing. At this time, if installed, remove vent manifold or vent valve streamer, refer to Paragraph 7.3.2. step d. (2). Aircraft retention line is attached during aircraft installation.

e. Continue folding life raft lengthwise as shown in steps 4 through 7. The final folded width should be 32 to 34 inches. Be sure life raft and retention lines remain clear. f. Fold life raft in quarters as shown in steps 8 through 10 with the center fold and end of life raft coming to, but not over, the inflation assembly.

NOTE

g. Lay out the valise, PN 65-85817-1 next to the folded life raft as shown in step 11.

Storage/transportation bins for packaged life rafts awaiting installation into aircraft should be fabricated as shown in Figure 3-12, except that plywood shall be substituted in place of wing-well

h. Place the folded life raft and accessory container on the valise as shown in step 12.

7-25

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 i. Lead the accessory container retention line under the inflation assembly, and tie the end through both handles of the kit using a bowline knot. Fake the excess line neatly and secure with a rubber band, No. 32 or equivalent, as shown in step 12. j. Remove the “TIE TO AIRCRAFT” streamer from the pocket on the valise and tie the long end of streamer lanyard to the short cable loop on the ripcord D-ring using a bowline knot as shown in step 12. k. Tie the raft retention line to the short cable loop on the ripcord D-ring using a bowline knot as shown in step 12. l. Coil the ripcord cable to approximately 5 inches in diameter and secure with suitable cord to prevent uncoiling as shown in step 12. m. Tie the inflation line attached to D-ring to loop end of inflation valve cable using a bowline knot as shown in step 12.

Use extreme care from this point on to avoid inadvertent inflation of life raft. n. Fold the valise up over life raft and accessory container, close snaps along the top, and bring side flaps

7-26

snugly over; secure velcro closures. The inflation line must have a clear lead from the inflation valve cable to notch in the valise as shown in step 13. o. Fake excess life raft retention line and inflation line neatly and secure with a rubber band, No. 32 or equivalent. Stow both lines under flap on the valise along with coiled ripcord as shown in step 13. p. Fake excess streamer lanyard and secure with a rubber band, No. 32 or equivalent. Stow streamer lanyard in pocket on flap as shown in step 13. q. Close snaps on flap, position D-ring as shown in step 13, and snap streamer to outside of flap.

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 7-20.

Folding and Packing Procedures, F-2B Life Raft Assembly, T-43A Aircraft

7-27

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 r. Place the packed life raft in the compartment PN 6585344-1, engage buckles, and tighten snaps. Stow excess strap as shown in Figure 7-21. s. Engage the separable hinge and close compartment cover making sure that cover latches are closed securely. t. Insert the packing record card, if any, and the accessory container shortage card, if any, in the frame provided on the top of the compartment cover. u. Install in aircraft compartment in accordance with drawing PN 65-85343.

ate tech order/job guide 1C-130-series for aircraft installation and removal of life raft. 7.5.3 7.6

MA-1 and MA-2. Refer to Paragraph 7.7. TWENTY-FIVE-MAN LIFE RAFT ASSEMBLY.

7.6.1 General. The 25-Man troop/crew life raft assembly shall be folded and packed at the organizational/intermediate level of maintenance. The 25-Man troop/crew life raft and survival kit are items of primary survival equipment for aircraft personnel forced down at sea. 7.6.2

Prefolding.

Packaged life raft assemblies shall not be thrown into trucks, trailers, or tractors for transportation between areas. Utilization of storage/transportation bins is mandatory. a. Ensure life raft, carrying case, and accessory containers have been inspected in accordance with Chapter 5. b. Ensure survival items and life raft accessories have been inspected for damage and expiration in accordance with Chapter 5. Refer to Table 7-4 for items used. Figure 7-21.

7.5

Packaged Life Raft Assembly, T-43A Aircraft

F-2B LIFE RAFT ASSEMBLY STOWAGE.

7.5.1 General. Procedures for stowage of F-2B life raft assembly in aircraft compartments may vary with type of aircraft affected. Prior to stowage of life raft, refer to applicable aircraft manual for proper installation. 7.5.2

Stowage of Life Rafts in Aircraft Compartments.

•

Packaged life raft assemblies shall not be thrown into trucks, trailers, or tractors for transportation between areas. Utilization of storage/ transportation bins is mandatory.

•

Prior to life raft installation, ensure aircraft life raft compartment is free of oil, dirt, water, or any other foreign substance that may damage life raft.

To stow life rafts in aircraft compartments, use the appropri-

7-28

NOTE The accessories listed in Table 7-4 are not issued as a complete unit. Items required will be requisitioned from appropriate property class. c. Ensure topping-off valves are closed finger tight. NOTE Check cylinders (reservoirs) for proper charge. Record date and activity performing check on a 2 X 3 inch strip of fiberglass adhesive tape, MIL-T4053. d. Attach free end of hose assembly (Figure 9-9, 1) to inlet of jet pump (Figure 9-12, 7) and torque to a value of 180 to 200 inlb. e. Lay canopy out with mast grommets at top and fold top half down as shown in Figure 7-22, step 1. f. Fold ends of canopy into required dimension and place rods and masts in canopy as shown in Figure 7-22, step 2.

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 g. Complete folding of canopy into required dimensions shown in Figure 7-22, step 3. h. Maintaining dimension, roll canopy tightly as shown in Figure 7-22, step 4. i. To pack center bulk of life raft, proceed as follows:

Surfaces must be joined within 60 seconds to prevent improper bonding. When applying tape to floor support slider, the 2 inch turn back must be at the pull slider end. Table 7-4.

NOTE Hand pump with adapter, 30 foot coil of nylon cord, and folded canopy may be packed inside a polyethylene bag. Squeeze out air and secure excess bag with two strips of tape. (1) When using tape, M11037, proceed as follows: (a) Pack hand pump with adapter, 30 foot coil of nylon cord, and folded canopy inside accessory compartment on center bulk of the life raft floor. Close floor support slider.

Accessories and Survival Items, 25-Man Life Raft Assembly

Accessory or Survival Item First Aid Kit, Survival Escape and Evasion1 Radio Set 2 , 3 Light, Distress Marker 3 , 4 Signal Mirror, MK-III 5 Distress Signal (Day/Night) MK-13, MOD 0 3 -orMK-124, MOD 0 Desalter Kit, Type MK-2 Solar Distillation Kit, Class B 6 Survival Straw, Pocket Purifier 7 Food Packet, Survival, General Purpose 3 Water Storage Bag, Size A Survival Manual Fishing Kit

Quantity Required Reference Number 6 05-1764

Manufacturer’s Code or NSN 6545-01-534-0894

1 1 1 4

AN/PRC902 — MIL-M-18371 LD165580

5820-01-238-6603MH 6230-Class 6350-00-299-6197 1370-00-309-5028

4 6 5 25 7

DL3139734 MIL-D-5531 MIL-D-5850 PP-80-C MIL-F-43231

1370-01-030-8330 4610-00-372-0592 4610-00-242-7639 4610-01-178-3431 8970-00-082-5665

5 1 1

MIL-B-8571 AFP 64-5 MIL-F-6218 (A-A58025) MIL-S-37800 MIL-C-5040 MIL-C-10436 60C6037 MIL-L-655 16B13293-1 22D23631-1 MIL-P-8258 MS2192 (ASG) 45B18979-2 -or67C46306-20 L-S-00626 44D9376 22D23575-1 MIL-W-1053 MIL-C-5040

8465-00-485-3034 — 4220-00-244-0764

Sunburn Ointment 8 Nylon Cord, Type I (30 feet) 9 Compass, Wrist 10 Knife 11 Lipstick, Type II, Class 18 Canopy Rods 9 Canopy Mast 9 Hand Pump, Type III 9 Adapter, Pump 9 Repair Kit, Life Raft w/Pliers 12

6 1 1 2 4 10 2 1 1 1

Bailing Sponge, Size 8, Type II Bailing Bucket 13 Canopy Assembly Whistle, Police, Plastic Nylon Cord, Type I (6 feet) 14

2 1 1 1 3

6505-01-121-2336 4020-00-240-2154 6605-00-268-3494 1670-00-729-1253MH 6508-00-116-1479 — — 4320-00-097-4580 00-092-5823 4220-00-693-1470

7920-00-240-2555 2090-01-345-2832 4220-00-234-9624 8465-00-254-8803 4020-00-240-2154 Change 1

7-29

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 Table 7-4.

Accessories and Survival Items, 25-Man Life Raft Assembly - Continued

Accessory or Survival Item Blanket, Aluminized 7

Feeder Tube Clamp Dye Marker Meclizine Hydrochloride 7 Light Safety Cyalume Lightsticks

1

Quantity Required Reference Number 3 MIL-B-36964

7

2 4 1 3

A/C 2780 MIL-S-17980 NDC00662-2120- 66 2172-A-1 95270-58

Manufacturer’s Code or NSN 7210-00-935-6665 7210-00-935-6666 7210-00-935-6667 — 6850-00-270-9986 6505-00-926-2111 6260-01-086-8077

First aid kit 6545-01-521-8522, 6545-01-521-8530 or 6545-01-521-8528 will be used until First Aid Kit, Survival Escape and Evasion (NSN 6545-01-534-0894) is available for use. 2 The PRC-90 series survival radio or survival radio authorized in accordance with TO 14-1-1 shall be installed in all kits which are installed in aircraft except those whose mission required a special radio, refer to the 31R Series tech orders. Spare radio battery may be installed with MAJCOM approval. When radios are not available or until receipt of radios, the use of beacons is authorized. Personnel locator beacons will not be installed in life rafts with flexible antennas or reinforcement brackets or unneeded parts. Remove flexible antennas or reinforcement bracket or unneeded parts from beacons and return to serviceable stock. When installing beacons in lieu of radios, beacon on-off switch shall be in the off position to preclude accidental activation, refer to 31R Series tech orders. 3 Items so marked will be requisitioned from the appropriate property classes to complete the kit. 4 Light distress marker SDU-5/E may be used. If the SDU-5/E is installed, the flash guard PN FG-1C and infrared lens PN MXU-507/E are required only in those kits which are installed in aircraft whose mission assignment is in a combat area. Refer to TO 14S10-2-2. 5 Signal Mirror, when exhausted or unserviceable, use 6350-00-261-9772. 6 Distillation kit shall be used until exhausted or unserviceable. At option of the MAJCOM, distillation kits may be replaced on a one-for-one basis with desalter kits or 3 each 10 ounce cans of water for each distillation kit. 7 To be installed at MAJCOM option. When exhausted, use 6850-00-985-7166. 8 To prevent melting ointment or lipstick from damaging other survival items, they may be placed in polyethylene interlocking seal bags 8105-00-837-7753. 9 Not packed in survival kit; it is stored inside the accessory compartment of the center bulk of life raft. 10 Compass, wrist type MC-L, 6605-00-463-6713, can be used if MIL-C-10436 is not available. Refer to TO 00-110N Series before using compass. 11 Knife assembly PN 60C6037 may be used if knife PN 45BI8786 is not available. 12 The repair kit will consist of four each repair plugs and pliers. These items will be packaged as a kit in conformance with drawing 45BI8979-2 and/or 67C46308 prior to installation in the accessory kit. 13 Bailing Bucket, when exhausted or unserviceable, use 2090-01-345-2832. 14 One to tie the hand pump and two to tie the feeder tube clamps.

7-30

Change 1

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 7-22.

Canopy Folding Procedures

(b) Seal floor support slider with tape. To facilitate removal, a pull tab may be formed by turning under 2 inches of tape and joining the two surfaces. (c) Wash surfaces to be joined and allow to dry. NOTE Stir adhesive well before using. Ensure adhesive is thoroughly mixed. Follow instructions as recommended by manufacturer. Recommend adhesive not be thinned. (d) Apply one coat of adhesive, M11628, CAGE 70167, or A-A-1936, Type I to floor support slider and tape, M11037 to be sealed. Allow to cure for 4 hours. (e) Apply pressure evenly to red urethane tape to eliminate any air bubbles or wrinkles that may have formed. (2) When using tape, M11642-2S or M12088-5-2S, proceed as follows: (a) Stow folded canopy, hand pump and adapter, and 30 foot coil of nylon cord inside acces-

sory compartment on center bulk of the life raft floor. Close floor support slider. (b) Using a lint-free cloth dampened with technical toluene, clean an area 2 inches on either side of floor support slider and allow to dry. (c) Cover floor support slider (zipper teeth) with duct tape. (d) Mix adhesive in accordance with manufacturers procedures in a paper cup using a tongue depressor. (e) Apply a coat of adhesive, M11628, CAGE 70167 or A-A-1936, Type I. (f) Using paint brush, H-B-491, or equivalent, apply a coat of contact adhesive M-11055 Style D to 1 inch on either side of floor support slider and duct tape. Allow adhesive to dry for a minimum of 10 minutes. (g) To assemble floor support slide tape, M11642-2S or M12088-5-2S CAGE 70167, proceed as follows:

7-31

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 (k) Starting from the center of tape, apply pressure evenly to joined surfaces to eliminate air bubbles and wrinkles to ensure a firm attachment.

1 Measure tape 8 inches longer than the length of the floor support slider. 2 Using a lint-free cloth dampened with technical toluene, clean tape and allow to dry.

(l) Apply talc, MIL-T-50036, Type T1 or A-A59303 to the exposed adhesive.

NOTE (m) Allow life raft to remain undisturbed for four hours.

Two inches of tape will be turned back to make a handle to facilitate removal. 3 To facilitate removal, a pull tab may be formed. Apply a coat of contact adhesive to an area 4 inches from one end of tape.

j. To fold sea anchor, see Figure 7-7. k. Pack accessories and survival items into survival kit container. l. Ensure heaving ring lines are faked and secured to heaving rings.

Surfaces must be joined within 60 seconds to prevent improper bonding. 4 Immediately (within 60 seconds) turn under 2 inches of tape and join the two surfaces. Allow to dry. NOTE The following steps do not apply to the 2 inches that were turned back. (h) Using paint brush, apply two coats of contact adhesive to 1 inch on either side of floor support slider and 2 inches past the end of floor support slider. Allow each coat to dry 10 minutes before applying the next. (i) Using paint brush, apply two coats of contact adhesive to tape. Allow each coat to dry 10 minutes before applying the next.

Surfaces must be joined within 60 seconds to prevent improper bonding. When applying tape to floor support slider, the 2 inch turn back must be at the pull slider end. (j) Immediately (within 60 seconds) join tape to prepared surface of floor support.

7-32

m. Ensure sea anchor retention line is serviceable and securely attached using a 25 foot ±6 inch length of nylon cord, MIL-C-5040, Type III. Replace if necessary. Refer to Chapter 6. Attach retention line to sea anchor bridle loop and to outboard life line of life raft using bowline knots. Fake line in 8 inch hanks and secure at each hank end with a rubber-band, No. 32 or equivalent. n. Lightly dust entire life raft assembly with talc, MIL-T50036, Type T1, or A-A-59303. 7.6.3

Folding.

a. Ensure prefolding procedures have been performed in accordance with Paragraph 7.6.2. b. Fold life raft in accordance with Figure 7-23.

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 7-23.

Folding Procedure, 25-Man Life Raft Assembly

7-33

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 7-24. 7.6.4

Arming Discharge Valve Assembly

Packing.

d. Remove AN cap installed in step a, attach hose assembly to nipple and torque to a value of 180 to 200 inlb.

a. Arm valve assembly by removing hose assembly (Figure 9-9, 1) from nipple (4). Install a AN929-4 cap (3) on the nipple. Ensure cap is tight as it must retain full pressure of cylinder charge. Insert a 3/16 inch Allen wrench into pulley (Figure 9-10, 4) for Valve PN 18D18167, or Figure 9-11, 5 for Valve PN 62314-1) and turn pulley clockwise to stop. NOTE Hook assembly shall not be utilized on crew life raft lanyard assembly. b. Insert ball end of lanyard assembly (Figure 9-13, 2) into cable port in valve until it enters slot in pulley. Figure 8-7 illustrates where ball must be located in pulley. c. Using Allen wrench, turn pulley counterclockwise until detent pin (Figure 7-24) is aligned with mark on valve top (cover) plate. Valve is now armed. Proceed to arm second valve in the same manner. See Figure 7-24.

7-34

NOTE To facilitate packing of life raft into case/container, packing bar (packing paddle) may be used. To fabricate packing bar, refer to Paragraph 3.8.3.4.2. e. Place survival kit in lower half of applicable life raft case/container. Attach lanyard assembly to lifeline loop adjacent to cylinder with a bowline knot. Place life raft in case/container in accordance with dimensions shown in Figure 7-25, step 1.

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 7-25.

Packing Procedure, 25-Man Life Raft Assembly

7-35

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 f. Dress lanyards (Figure 7-26) in case/container and through slot in bottom half of case/container. Permit lanyard to extend a sufficient amount to connect the three retainer pins. Fake excess lanyard neatly into pocket inside case/container. Snap pocket closed, ensuring that both ends of lanyard leave the pocket from the same opening.

sure evenly to eliminate any air bubbles or wrinkles. Using a single strand of nylon thread, V-T-295, Type I, Class A, Size E and AFTO Form 255, safety-tie two ends of outside straps after tightening securely. m. Secure webbing over retaining pins with hook and pile fasteners. Close cable cover assemblies over lanyard assembly. See Figure 7-27.

g. Continue to pack life raft into case/container to dimensions shown in Figure 7-25, steps 2 and 3. h. Attach survival kit to outboard lifeline using an 8 foot length of nylon cord, MIL-C-5040, Type II with a bowline knot. i. Ensure horizontal center lines of jet pumps are at top edge of case/container. j. Place top half of case/container on bottom half. Ensure that lanyard pocket on case/container top half is located close to lanyard. Engage lower case/container half lip uniformly in top half groove. Position strap assemblies as shown in Figure 7-25, step 4. Place strap assembly grommet over cone and secure in place with retainer pin. Tighten strap at take-up buckle and place end of strap webbing through belt loop. Figure 7-27.

Figure 7-26.

Lanyard Assembly, 25-Man Life Raft Assembly

k. Position lanyards handle on crew case/container and secure it with tape. For troop life raft, fake remaining lanyard and handle into pocket and snap pocket closed. l. Using a single strand of nylon thread, V-T-295, Type I, Class A, Size E, safety-tie the three retainer pins with three half-hitches. Loop thread over end of parachute pin as shown in Figure 7-25, step 5. Make the three half-hitch ties against cable end of parachute pin. Tie ends of thread with three square knots, tighten securely. Seal by centering square knots on adhesive backed AFTO Form 255, Notice Certification Void When Seal is Broken. Fold AFTO Form 255 in half applying pres7-36

Packaged Life Raft Assembly

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

SECTION III SEA RESCUE KITS 7.7

GENERAL.

7.7.1 Use. MA-1 and MA-2 sea rescue kits, MIL-S-25093 are items primarily designed for the aerial delivery of flotation and survival equipment to personnel forced down at sea. 7.7.2 Description. MA-1 and MA-2 rescue kits consist of five cylindrically-shaped containers numbered one through five in consecutive order. The containers are interconnected by four buoyant polyethylene ropes 210 feet long. The MA-1 kit containers one and five each contain a seven-man (LRU1/P) life raft; the MA-2 kit containers one and five each contain a 20-Man life raft. The two life raft containers of both kits are identical with one exception: Number five container is not equipped with a polyethylene rope. All life raft containers are equipped with a 15 to 50 foot static line (length dependent on delivery type aircraft) for the purpose of inflating life rafts when containers leave aircraft. Containers numbered two, three, and four are waterproof supply containers composed of an inner container packed with survival items and a sleeve type outer container closed by a tie cord at each end. Refer to Table 7-5 for required components that are packed in applicable containers.

arrangement along the open length and loops for a cord tie on the closing end of the harness assembly permit adjustment and closing around the container. Each harness assembly is equipped with three V-rings for interconnecting the containers and for “bombing up” of the kit. The supply containers are capable of remaining watertight for 6 hours. 7.8

FOLDING AND PACKING.

7.8.1 Prefolding. To perform prefolding procedures on sea rescue kit life raft assemblies, proceed as follows: NOTE The life raft container for MA-1 (LRU-1/P) is PN 61D4315-1; for the MA-2 (F-2B) is PN 61D4315-2. a. Ensure life raft, container, and survival items have been inspected in accordance with Chapter 5. b. Ensure topping-off valves are closed.

7.7.2.1 Attached to the outer container is a harness assembly, with a pocket at one end for stowing a sea anchor and the 210 foot length of polyethylene rope. A belt and buckle Table 7-5.

Accessories and Survival Items, MA-1 and MA-2 Sea Rescue Kits

Accessory or Survival Item LIFE RAFT CONTAINERS ONE AND FIVE Life Raft Type LRU-1/P (MA-1 Kit) Life Raft Type F-2B (MA-2 Kit) Container, Life Raft (MA-1 Kit) Container, Life Raft (MA-2 Kit) Rope, Polyethylene (Container 1 only) Lanyard Static Line Cord, Nylon, Type III SUPPLY CONTAINERS TWO AND FOUR Container, Supply, Inner Container, Supply, Outer Harness, Supply Rope, Polyethylene Sea Anchor SUPPLY CONTAINER THREE Container, Supply, Inner Container, Supply, Outer Harness, Supply Rope, Polyethylene Sea Anchor

Quantity Required

Reference Number

Manufacturer’s Code or NSN

1 1 1 1 210 ft 1 15/50 ft

62A82H2 63A80H1 61D4315-1 61D4315-2 MIL-R-24049 54C6407 MIL-C-5040

4220-00-071-1889 4220-00-563-3567 4220-00-874-6474 4220-00-874-6475 4020-00-968-1355 4220-00-568-6101 4020-00-246-0688

1 1 1 210 ft 1

54C6406 54C6405 54D6403-1 MIL-R-24049 —

4220-00-693-1466 4220-00-693-1467 4220-00-568-6102 4020-00-968-1355 2040-00-265-7107

1 1 1 210 ft 1

54C6406 54C6405 54D6403-2 MIL-R-24049 —

4220-00-693-1466 4220-00-793-1467 4220-00-568-6103 4020-00-968-1355 2040-00-265-7107

7-37

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 Table 7-5.

Accessories and Survival Items, MA-1 and MA-2 Sea Rescue Kits - Continued

Accessory or Survival Item PACKED IN SUPPLY CONTAINERS TWO AND FOUR Canopy, Life raft (MA-2 Kit only) Rod Assy, Canopy (MA-2 Kit only) Mast Assy, Canopy (MA-2 Kit only) Bag, Water Storage Blanket 1 Bucket, Bailing 2 Tarpaulin, Life raft, Size 77 (MA-1 Kit only) Oar, Life raft (3-piece) (MA-1 Kit only) Can Opener Water, Canned Box, Match, Waterproof w/Strike Anywhere Matches Desalter Kit, MK-2 Distillation Kit, Solar A-1, Class B 3 Adapter, Distillation Bag Rations, Survival, Type ST -orFood Packet, Survival, General Purpose Gloves, Insert Gloves, Shell Lipstick, Antichap Mirror, Signal, Mark III 4 Pump, Hand, Air, Type III Adapter, Pump

Quantity Required

1 6 1 3 2 1 1 1 2 2 1 1 1 1 2

Reference Number

Manufacturer’s Code or NSN

MIL-L-009131 Para 3-4 MIL-L-9131 MIL-L-9131 MIL-B-8571 — 44D9376 MIL-T-7249 MS26529-2 MIL-O-20589 — —

4220-00-803-9478 4220-00-803-9477 2040-00-883-2002 8465-00-485-3034 7210-00-282-7950 00-485-3006 8340-00-485-3012 2040-00-485-3010 7330-00-242-3506 8960-00-243-2103 8465-00-265-4925

MIL-D-5531 MIL-D-5850 MS23004 (ASG)

4610-00-372-0592 4610-00-242-7639 4220-00-759-4934

8970-00-082-5665 00-199-5411 8415-00-269-5701 6508-00-161-6205 6350-00-299-6197 4320-00-097-4580 4730-00-092-5823

Kit, Repair, Life Raft w/Pliers

1

Light, Distress Marker 5 Signal, MK-13, MOD 0 -orMK-124, MOD 0 Sponge, Cellulose Sunburn, Ointment Towel, Terry Cloth, Size 20 X 40 in (approximately) Radio Set 6 , 7 Poncho 8 Goggles, Sun First Aid Kit, Survival Escape and Evasion PACKED IN SUPPLY CONTAINER THREE Blanket 1 Can Opener

1 2

MIL-F-43231 — — — MIL-M-18371 MIL-P-8258 MS21962 (ASG) -or53B6241 45B18979-2 -or67C46306-20 — LD165580

1 1 1

DL3139734 — MIL-S-37800 —

1370-01-030-8330 7920-00-240-2559 6505-01-121-2336 7210-00-128-8929

1 2 2 6

AN/PRC-90-2 — — 05-1764

5820-01-238-6603MH 5820-00-290-0550 8465-00-530-4083 6545-01-534-0894

2 2

— MIL-O-20582

7210-00-282-7950 7330-00-242-3506

7-38

Change 1

1 Pair 1 Pair 2 1 1 1

4220-00-693-1470

6230-Class 1370-00-309-5028

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 Table 7-5.

Accessories and Survival Items, MA-1 and MA-2 Sea Rescue Kits - Continued

Accessory or Survival Item Fishing Kit

Quantity Required 1

Food Packet, Survival, General Purpose Lipstick, Antichap Manual, Survival Medical Instrument and Supply Set Bag, Water Storage Water, Canned Desalter Kit, MK-2 Goggles, Sun Signal, MK-13, MOD 0 -orMK-124, MOD 0 Towel, Terry Cloth, Size 20 X 40 in (approximately) Poncho 8 Meclizine Hydrochloride 9

Reference Number

Manufacturer’s Code or NSN

MIL-F-6218 (A-A58025) MIL-F-43231

4220-00-244-0764

2 2 1 1 2 2 2 2 5 5 1

AFP 64-5 — MIL-B-8571 — MIL-D-5531 — LD165580 DL3139734 —

8970-00-082-5665 6508-00-161-6205 — 6545-00-927-3000 8465-00-485-3034 8960-00-243-2103 4610-00-216-5031 8465-00-530-4083 1370-00-309-5028 1370-01-030-8330 7210-00-128-8929

2 1

— NDC00662-2120-66

8405-00-290-0550 6505-00-926-2111

1

Aluminum blanket NSN 7210-00-935-6665, 7210-00-935-6666, or 7210-00-935-6667 may be installed at the option of the MAJCOM. 2 Bailing Bucket, when exhausted or unserviceable, use 2090-01-345-2832. 3 Distillation kit shall be used until exhausted or unserviceable. At option of the MAJCOM, distillation kits may be replaced on a one-for-one basis with desalter kits or 3 each 10 ounce cans of water for each distillation kit. 4 Signal mirror, when exhausted or unserviceable, use 6350-00-261-9772. 5 At option of the MAJCOM, light marker SDU-5/E may be used. If the SDU-5/E is installed, flash guard PN FG-1C and infrared lens PN MXU-507/E are required only in those kits which are installed in aircraft whose assigned mission is in a combat area. 6 The PRC-90 series survival radio or survival radio authorized in accordance with TO 14-1-1 shall be installed in all kits which are installed in aircraft except those whose mission requires a special radio. Spare radio battery may be installed with MAJCOM approval, refer to the 31R Series tech orders. 7 Radio package containers may be sealed with barrier paper for waterproofing, at the option of the MAJCOM. 8 Survival raincoats NSN 8405-00-276-7590 will be used until exhausted. 9 To be installed at option of MAJCOM. NOTE •

Weight-check cylinder assembly for proper charge. Record date and activity performing weight check on an approximately 2 X 3 inch strip of fiberglass adhesive tape, MIL-T-4053.

•

Only valve assembly A-128-RDB-HD will be installed on life rafts used in rescue kits.

c. Place applicable valve cover on inflation valve. NOTE

e. Ensure life raft and container stencil markings are in accordance with Chapter 5. In addition, the markings on container will identify the contents of those containers. Life raft type may vary according to type of kit required for directed mission. Refer to Table 7-6. f. Lightly dust entire life raft assembly with talc, MIL-T50036, Type T1, or A-A-59303. Table 7-6. Kit number 1 and 5

To fabricate valve cover, Refer to Chapter 6. 2 and 4 d. Attach cylinder assembly and torque to a value of 140 to 150 inlb.

Additional Markings

Markings LRU-1/P (7-Man) F-2B (20-Man) Food, clothing, and signaling devices w/radio

7-39

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 Table 7-6.

Additional Markings - Continued

Kit number 3

Markings

g. Place life raft into applicable container so loop end of carbon dioxide actuating cable is toward end of container with static line.

Medical kits

7.8.2 Folding and Packing Life Rafts. To fold and pack life rafts, proceed as follows: a. Loop lanyard, PN 54C6407 around lifeline, mooring line, ladder, or handle, as applicable, nearest forward end of container. Pass free end of lanyard through loop of its opposite end. See Figure 7-28. b. Tie free end of lanyard, PN 54C6407 to loop inside rope stowage pocket with an overhand knot, allowing approximately 6 inches of free lanyard end to remain. See Figure 7-28.

h. Using a sufficient length of nylon cord, MIL-C-5040, Type I as a lacing cord, tie one end of lacing cord to single-end grommet adjacent to loop inside rope pocket with a surgeon’s knot or equivalent and an overhand locking knot. Lace cord through grommets toward rear of container. i. To free end of static line, tie an overhand knot 12 inches from end. See Figure 7-31. j. Attach end of static line to loop end of inflation valve cable with a bowline knot.

NOTE On container five, tape the 6 inches of free lanyard from overhand knot to bottom of loop through and around loop, using fiberglass tape, MIL-T4053. c. Fold applicable life rafts in accordance with Figure 7-29, LRU-1/P (7-Man) or Figure 7-30, F-2B (20Man). NOTE Before folding appropriate life raft assemblies for use in sea rescue kit, ensure that it is configured in accordance with Chapter 4. d. Fabricate static line using nylon cord, MIL-C-5040, Type III or equivalent applicable to type aircraft as follows: AIRCRAFT C-130

LENGTH 15 feet

e. To one end of static line securely attach a small size snap hook 1B, 3.5, 18 eye. Snap must be painted with suitable bright yellow paint. NOTE In rescue kits to be delivered from C-130 aircraft, mark static line with contrasting masking (pressure) tape 5 feet from inflation valve cable assembly. f. Stow static line under elastic retaining bands located in static line pocket; first stow is made under lower left retainer band. Equally divide stows between all retainer bands and snap cover in place. See Figure 7-31.

7-40

Figure 7-28.

Attachment of Lanyard, PN 54C6407

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 7-29.

Folding Procedures, LRU-1/P (7-Man) Life Raft Assembly (MA-1 Sea Rescue Kit Use)

7-41

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 7-30.

7-42

Folding Procedures, F-2B (20-Man) Life Raft Assembly (MA-2 Sea Rescue Kit Use)

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 k. F-2B with Vent Manifold Installed Only-Open vent manifold, remove vent manifold streamer, and install moisture cap PN 2066.

containing approximately 12 loops of rope in each hank. The length of rope between hanks will be approximately 10 inches. See Figure 7-32. NOTE Container five is identical to container one except that it does not contain a polyethylene rope. Container five can be made into a number one container by adding the rope. The rope pocket flaps of container five will not be laced. Container five will be re-identified as container one if rope is installed. n. Secure each hank with a rubber band, No. 32. o. On the 6 foot end, securely splice a snap hook, 1B, 3.5, 18 eye or equivalent paint snap with a suitable bright red paint. Snap hook can be attached with two half-hitches in lieu of splicing, provided free end of rope is sized or tightly wrapped with fiberglass tape, MIL-T-4053 to prevent possible slippage. NOTE Snap may be painted prior to installation.

Figure 7-31.

Stowing Static Line

p. Tie free end of polyethylene rope to loop in lanyard PN 54C6407 in container one, using a bowline knot. See Figure 7-32.

l. Continue to lace container closed. Route lacing cord through overhand knot tied in step i, draw tight, and tie end securely to last grommet with a surgeon’s knot.

Figure 7-32.

m. Starting 6 feet from end on container number one, assemble a 210 foot polyethylene rope into 10 hanks

Rope Hanks

q. Position rope hanks in three crosswire layers inside rope stowage pocket. See Figure 7-33.

7-43

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 r. Using two lengths of nylon cord, MIL-C-5040, Type I tie through each stowage pocket grommet with a square knot and an overhand knot on free ends. See Figure 7-34. s. Using a 24 inch length of nylon cord, MIL-C-5040, Type I tie an overhand knot around free end of polyethylene rope at exit point of stowage rope pocket. Route two free ends of lacing cord through grommets of stowage rope pocket flap ends; draw flaps closed, and tie lacing cord with a square knot. Accordion-fold the free end of polyethylene rope and secure ends with rubber bands, No. 32. See Figure 7-35.

Figure 7-33.

7-44

Stowage of Rope Hanks

Figure 7-34.

Closing Rope Stowage Pocket Grommets

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 •

Installation of night locator lights (if applicable).

7.8.3.1 Assembling Containers Two, Three, and Four. To assemble containers two, three, and four, proceed as follows: a. Ensure all survival items have been inspected in accordance with Chapter 5. NOTE To fabricate packing frame, refer to Chapter 3. b. Insert inner container inside packing frame and fold open end over top edge of frame. Place tie strings in equally spaced slots of frame.

Figure 7-35.

Closing Rope Stowage Pocket

t. The four D-rings on ends of the two straps around life raft container will be doubled back on strap and be secured with masking (pressure) tape. This will prevent D-rings from hanging up and tearing life raft container when kit is launched. 7.8.3 Packing Supply Containers. Packing of supply containers consists of the following: •

Assembling containers two, three, and four.

•

Preparation of harness assembly.

•

Installation of harness assembly.

7-45

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 c. Fold two blankets in half and position over inner container leaving extra blanket material toward forward end.

e. MA-2 Only-Fold F-2B life raft canopy prior to placement into supply container.

NOTE Blankets in container three shall be positioned so that an equal amount of blanket material extends over both ends of assembly frame. d. Prepack hand pump in tube or suitable impact resistant material prior to placement into supply container. f. Package radio in shipping container such as shown in Figure 7-36 or wrap radio in suitable impact resistant padding material. Barrier paper sealing will be at the option of the MAJCOM. g. The prepacked radio shall be positioned at rear end of supply container with two food packets between radio and end of supply container.

7-46

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 h. Pack medical kit in container three so it shall be positioned at rear end of container with two food packets between it and end of container, with buckle side toward blanket.

k. MA-2 Only-Place prefolded F-2B canopy on top of folded blanket.

Figure 7-36.

NOTE

Radio Shipping Container (Typical)

l. Leaving packed container in frame, pull open end of container from frame and extend upward as far as possible. Fold both ends of container inward.

Pack remaining items into supply containers two, three and four ensuring ample protection is provided to those items subject to damage and ensure a tight pack. i. MA-1 Only-Place folded tarpaulin on top of packed items. j. Fold blanket ends to width of container. Place folded blanket ends into container.

7-47

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 m. Make a 2 inch fold (minimum) at open end. Fold corners of container inward approximately 2 inches and start rolling container toward packed items.

o. Forward end of outer container will be closed prior to inserting inner supply container. Close outer container by making three wraps with cord, MIL-C-5040, Type III as shown in Paragraph 7.8.3.1, step q. thru Paragraph 7.8.3.1, step x. NOTE New style containers have forward end folded and sewn closed from manufacturer. p. Tie one end of outer container (sleeve type) closed as shown in Paragraph 7.8.3.1, step q. thru x., and insert forward end of packed inner container with bleeder valve into outer supply container. Before closing container, expel as much trapped air as possible and tie end of container. q. Pull open end of container upward and fold end of container downward two inches minimum.

n. Ensure that bleeder valve is open at end of container and use a vacuum cleaner or pump to evacuate air as edge is rolled down. When container has been rolled as tight as possible and all air evacuated, close bleeder valve and tie retainer cords with slip knots.

7-48

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 r. Fold ends of container inward approximately two inches.

s. Fold end of container downward two inches minimum.

7-49

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 t. Fold ends of container to form an “M” fold as shown and secure a rubber band, No. 64 to aid in retaining fold until tying.

v. Tie a single overhand knot for locking the surgeons knot.

w. Make one turn with free ends of cord, MIL-C-5040, Type III around middle of fold and tie a square knot. u. Using cord, MIL-C-5040, Type III attached to the loop stitched to outer container, make one turn around and under the “M” fold and tie a surgeons’ knot.

7-50

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 x. Make one turn with free ends of cord, MIL-C-5040, Type III around middle of fold. Tie a surgeons knot and a single overhand knot for locking under square knot.

c. Assemble polyethylene rope in hanks in accordance with Paragraph 7.8.2, step m. NOTE Harness assembly PN 54D6403-1 with knife PN 45B18786 or 60C6037 and holder attached to rope pocket will only be used in assembly of containers two and four. The knife holder may be laced or sewn to harness assembly. d. Attach knife and holder to harness assembly. e. Loosely fold sea anchor in a circular pattern and place in rope stowage pocket. f. Before placing polyethylene rope in rope stowage pocket, securely attach a snap hook in accordance with Paragraph 7.8.2, step o. g. The snap on the polyethylene rope to be installed in container two shall be painted a bright green and the snap used in container four will be painted white.

7.8.3.2 Preparation of Harness Assembly. To prepare harness assembly, proceed as follows: a. Tie a 210 foot polyethylene rope to bridle loop of a sea anchor with mooring line removed, approximately 5 feet from end of rope with an overhand knot. b. Tie end of rope to webbing loop inside stowage rope pocket of harness assembly, with two half-hitches and an overhand knot on free end.

NOTE Snap may be painted prior to installation. h. Position rope hanks in pocket on top of sea anchor and close pocket flaps using same procedures as for container one in accordance with Paragraph 7.8.3.1, step q. 7.8.3.3 Installation of Harness Assembly. To install harness assembly, proceed as follows: a. Place rope stowage pocket at forward end of supply container and pull harness webbings toward rear end of container. b. Adjust harness so the two V-rings are located over closing folds (TOP) of inner container. c. Insert closing strap nearest rear of container through adapter and draw tight. d. Pass a free end of outer container closing cord through two loops of harness webbing ends.

7-51

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 e. Pass other free end of outer container closing cord through remaining webbing loop end and draw tight. Tie with a surgeon’s knot and an overhand knot on free ends.

tainers one, three, and five at the option of using organization. The light must be waterproof, buoyant, and float free. The light may be turned on before kit deployment. a. Cut a 10 foot length of nylon cord, MIL-C-5040, Type II or III to be used as a retention line for marker light. Double retention line, ties ends together, and sears to prevent fraying. b. Tie one end of retention line to attachment point of light. Tie free end to V-ring of container three. Fold retention line in 6 to 8 inch hanks along side of light and secure with rubber bands. Attach light to container three with two turns of nylon thread, V-T-295, Type II, Class A, Size 5 or equivalent. The polyethylene rope shall be routed under this thread as shown to ensure breakage of thread during deployment which will allow light to float free on length of 5 foot retention line. An additional attachment thread can also be used on lower end of light provided rope is routed in same manner.

f. Loosen closing belt, readjust harness, and close belt, again drawing it tight. Adjust and close webbing belt nearest forward end of container in a similar manner. g. Tie cord of rope stowage pocket skirt tight with a surgeon’s knot. h. The single centered V-ring of container two shall be painted a bright red and the snap on end of polyethylene rope of container shall be painted a bright green. i. The single centered V-ring of container three shall be painted a bright green and the snap on end of polyethylene rope of container shall be painted a bright blue. j. The single centered V-ring of container four shall be painted a bright blue and the snap on end of polyethylene rope of container shall be painted a bright white. 7.8.3.4 Installation of Night Locator Lights (If Applicable). To install night locator lights, proceed as follows: NOTE To assist survivors in locating kits during night deliveries, sea marker lights, MIL-L-81509, or commercial equivalent may be attached to con-

7-52

Do not use more than one turn of masking (pressure) tape around V-rings. Failure of the tape to break loose will cause restriction of life raft during inflation and possibly cause life raft to burst. c. For attachment of marker light to containers one and five, fabricate retention line as outlined in step a. Tie one end of line to attachment point of light. Attach free end of line to loop in rope stowage pocket. Attach light to container by passing a length of nylon thread, V-T295, Type II, Class A, Size 5 through lacing grommets and tie off. Upon life raft inflation, thread will break

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 and allow light to float free within length of retention line. Holding V-rings in position with masking (pressure) tape is optional.

7.8.4

Record Updating. NOTE

DD Form 1574 may be secured to container or container data pocket with a length of nylon cord, MIL-C-5040, Type I. a. Upon completion of assembly of all five containers, a completed DD Form 1574 shall be attached to or installed in locally manufactured inspection data pocket on each container; properly identify it as an MA-1 or MA-2 rescue kit. b. Complete appropriate 300 series AFTO Forms.

SECTION IV LIFE PRESERVER ASSEMBLIES 7.9

LPU-6/P INFANT’S FLOATING SURVIVAL COT.

7.9.1

Prefolding.

e. Ensure cell is fully evacuated. f. Lightly dust entire cot with talc, MIL-T-50036, Type T1, or A-A-59303.

a. Ensure cot, carrying case, and rescue light assembly have been inspected in accordance with Chapter 5.

7.9.2

Folding and Packing. NOTE

Before closing carbon dioxide protector flap, screw cylinder into valve by hand until it bottoms against the gasket. Tighten an additional ¼ turn and tighten set screw. NOTE When using inflation assembly that has extra lanyard and pin attached, tie lanyard in an overhand knot at metal portion. b. Ensure carbon dioxide cylinder has been installed. c. Ensure cell has been marked with inspection data.

Some containers delivered under Contract Number DSA 700-69-C-8514 were manufactured with dimensions adhering to the negative side of the specification tolerances, therefore, proper deflation is essential when packing cot in container. When installing inflator assembly, MIL-I-23145 on survival cot, lanyard with closure pin attached is not required and will be removed by tying an overhand knot next to metal ferrules, cutting off the remaining portion, and searing cut ends. a. Fake retaining line in retaining line pocket and snap pocket closed. See Figure 7-37. Factory sewn pockethank retaining line approximately 4½ inches long and secure with a rubber band, No. 16 or equivalent at each end. Slip hank retaining line into the sewn pocket.

d. Ensure inspection records are updated in accordance with Chapter 5.

7-53

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 7-37.

Stowage of Retaining Line

b. Lay the LPU-6/P survival cot on a clean surface. Unfasten canopy and pull toward inflator. c. Fold in hood portion of cot. d. Pull canopy back over hood, positioning sides under tubes. e. Unsnap suspension webbing ensure free movement of retention line pocket. Resnap suspension webbing and retention line pocket. f. Lock oral inflation valve and close carbon dioxide protective cover with snaps provided.

7-54

g. Fold both sides of cot assembly towards center, positioning retention line pocket across the width of assembly. Position light battery so that its length is at right angles to length of cot in same manner as retention line pocket as shown. It may be necessary to remove battery from its holding straps to accomplish this.

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 h. Roll and compress cot assembly beginning at bow end of cot (end opposite inflation assembly).

e. Ensure cells are fully evacuated. 7.10.2

Folding and Packing. NOTE

i. Insert rolled cot into container, snap container closed, and stencil or stamp inspection due date on outer container. Use of fiberglass tape for inspection dates may be used.

•

Due to the various manufacturers and minor physical differences and markings of the A-A50652 life preserver assemblies, no standard packing procedures can be set forth.

•

The Distress Signal Light (water activated light) may be placed between the folds or may dangle on the side of the life preserver.

a. Care should be exercised during packing to ensure that the oral inflation tubes are not crimped/damaged and that installed survival items and hardware are not packed in such a way as to cause damage to the item or flotation cells. Pack inflation assembly at the bottom of the container. b. Stencil or stamp inspection due date on outer container. Use of fiberglass tape for recording inspection dates is authorized. 7.10.2.1 A-A-50652 Repair/Replacement of Lifeline. To provide life preserver assemblies with a lifeline, proceed as follows: a. Attach snap, swivel eye, ¼ or 3/8 inch to one end of 10 foot cord, nylon, MIL-C-5040, Type I or III or equivalent, with a bowline knot. Sear both ends to prevent fraying. b. Tie other end to D-ring or waist strap with a bowline knot.

7.10 A-A-50652 (COMMERCIAL) LIFE PRESERVER ASSEMBLY.

c. Fake line into hanks approximately 3 inches long.

7.10.1

d. Secure faked line with rubber band, No. 32 or equivalent.

Prefolding.

a. Ensure the A-A-50652 and survival items (Table 7-7) have been inspected in accordance with Chapter 5. NOTE The accessories listed in Table 7-7 are not issued as a complete unit. Items required will be requisitioned from appropriate property class.

7.10.2.2 Attachment of Survival Items. To attach survival items in life preservers, proceed as follows: a. Cut an 18 to 24 inch length of cord, nylon, MIL-C5040, Type I or III or equivalent, color optional. b. Sear ends to prevent fraying.

b. Ensure carbon dioxide cylinder has been installed with cell protector.

c. Attach survival items separately to one end of line with a bowline knot.

c. Ensure cell has been marked with inspection date.

d. Tie other end securely to D-ring or waist strap with a bowline knot.

d. Ensure inspection records are updated in accordance with Chapter 5.

7-55

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 7.10.2.2.1 Optional Attachment of Survival Items. To reduce excessive tangling of survival items: a. Attach whistle lanyard to D-ring using a larks head knot. b. Cut a 24 inch piece of cord, nylon, MIL-C-5040, Type I or III or equivalent. Sear both ends to prevent fraying. c. Using bowline knots, attach one end of nylon cord to D-ring and the other end to the middle grommet on sea dye marker. Table 7-7. Survival Item

1 1 1 1 1 10 ft

e. Accordion fold the whistle lanyard on top of sea dye marker. f. Place the lifeline on the bottom of the sea dye marker. g. Secure whistle, lifeline and sea dye marker by wrapping rubber band, No. 32 or equivalent, around survival items.

A-A-50652 Survival Items

Quantity Required

Distress Signal Light (one piece) or (two piece) Light Unit Battery, Water Act. Dye Marker Whistle, Type II Lifeline

d. Fold over the top flap and wrap the holding straps around the sea dye marker, then wrap the nylon cord 3 times around the sea dye marker.

Reference Number

ACR/L8-1(A) or equivalent A3-06-0267 or equivalent 1040 or equivalent MIL-S-17980 MIL-W-1053 MIL-C-5040 (Type I or III)

Manufacturer’s Code or NSN

4220-01-372-5190 6230-01-306-9701 6135-01-309-8414 6850-00-270-9986 8465-00-254-8803 -

7.11 LPU-3/P AND LPU-10/P LIFE PRESERVER ASSEMBLIES. 7.11.1

Prefolding. NOTE

All steps pertain to all assemblies, unless otherwise noted. a. Ensure LPU-3/P and 10/P have been inspected in accordance with Chapter 5.

7-56

Screw cylinder into valve by hand until it bottoms against the gasket. Tighten an additional ¼ turn and tighten setscrew. b. Ensure carbon dioxide cylinder has been installed. c. Ensure cell has been marked with inspection data.

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 d. If necessary, install 3 inch protective flap in accordance with Paragraph 4.8.8.

i. Fold cell protectors over inflator.

NOTE If the inflation assembly is removed for any reason perform a leakage test again. e. If necessary, remove inflators from cells and install new cell protectors. If cell protectors are not available, fabricate in accordance with Paragraph 3.8.2.3.

Improper routing of retainer strap across the lanyard will render preserver inoperative. j. Loop cylinder retainer strap around inflator assembly between cell protector and cell ensuring lanyard is free from under retainer strap. Snap in position.

f. Ensure cells are fully evacuated. NOTE Before packing, ensure pile tape from bottom flap of container is removed. g. Position cell protector under inflator. Reinstall the inflator and new gaskets. Torque the hex nut to 25 ±1 inlb using a 9/16 inch socket.

k. Ensure cell is attached to case/container by either method A or B; use braided nylon cord, MIL-C-7515, Type II. (1) Method A:

h. Place cell on container and insert cylinder into pocket of container.

(a) Thread one end of cord through end grommet of container and other end through opposite end grommet of container. Thread cen-

7-57

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 ter of cord up through center of grommet of container, forming a loop.

(2) Method B: Thread one end of braided nylon cord through end grommets of cell and container, and other end of braided nylon cord through other end grommets of cell and container. Tie a square knot over top cord followed by a locking knot. l. Position velcro tape protectors. In lieu of hand tacking, an alternate method of attaching protectors is to use a piece of cloth with a strip of velcro pile tape stitched to one end. Refer to Chapter 4.

7.11.2

Folding and Packing. NOTE

(b) Fasten cell to container by routing braided nylon cord through appropriate grommets in cell. Route ends through loop in center; tie a square knot followed by a locking knot above loop.

•

The following illustrations of the folding and packing procedure depict the LPU-3/P life preserver assembly. However, all cells are of the same basic configuration and all are folded or packed in the same manner.

•

A container closure tool or pull cords may be used for closure of container.

•

Using personnel may develop procedures which are more acceptable than those being presented. Therefore, methods of folding life preserver can and will vary to some extent as long as safety is not impaired.

a. Fold entire lower portion of cell over as far as possible but not exceeding top edge of container.

7-58

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 b. Fold outer portion of cell over to meet lower edge.

e. Begin folding cell section containing oral inflation valve. Fold cell over container assembly.

c. Fold outer portion of cell over again to width of container.

f. Fold end of cell over, even with edge of container.

d. S-fold cell into container. Ensure folded cell is completely inside.

7-59

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 g. Fold top portion of cell over, even with top edge of container.

j. LPU-3/P and 10/P-Lock oral inflation valve closed and insert valve in pocket. NOTE Packing cord consisting of an 8 inch length of nylon cord, MIL-C-5040, Type I may be used to aid in closing container. k. Route packing cord through retaining loop located on container.

Ensure actuating lanyard and pull knob are routed on top of 3 inch protective flap after closing bottom flap. NOTE h. Fold cell over onto container.

When bottom flap is closed, 3 inch protective flap (Figure 4-29 and Paragraph 4.8.8) is pulled toward top flap. l. Route packing cord through rear, bottom, top, and front flaps, in that order, ensuring that retaining loop engages each flap grommet in turn. NOTE Earlier model preservers incorporate use of a cotter pin in lieu of plastic closure pin. m. Route closure pin through front flap; insert into retaining loop, remove packing cord, and safety-tie closure pin using nylon thread, V-T-295, Type I, Class A, Size A. See Figure 7-38. Safety-tie using a surgeon’s knot followed by a single overhand knot.

i. Position oral inflation valve in center of container. This may be accomplished by adjusting last fold to achieve desired position.

7-60

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 mature cell inflation by hangup on an immovable object during body movement. Those containers allowing this condition shall be corrected in accordance with Paragraph 4.8.4 and Figure 4-24. o. Close lanyard flap snap fastener. p. Ensure inspection records have been updated, in accordance with Chapter 5.

Figure 7-38.

Safety-Tying Closure Pin

Before closing snap fastener, ensure closure pin is in right position (Figure 7-39).

Figure 7-39.

Positioning Closure Pin

n. Prior to closing lanyard flap snap fastener, ensure closure pin is positioned as shown in Figure 7-39.

Some LPU-3/P and LPU-10/P life preserver containers allow actuation lanyard to dangle further than others. This condition can cause possible pre-

7-61/(7-62 blank)

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

CHAPTER 8 OVERHAUL OF CARBON DIOXIDE CYLINDER, AIR CYLINDER, AND RESERVOIR AIR CYLINDER SECTION I MULTIPLACE CARBON DIOXIDE CYLINDER 8.1

OVERHAUL OF MULTIPLACE CYLINDERS.

•

Rewinding.

•

Soldering.

•

Painting for conventional

DO NOT commingle parts. This may cause a slow inflation improper detachment during deployment.

•

Powder Coating.

NOTE

•

Reassembly.

•

Overhaul will be accomplished by aircraft environmental system repair personnel or qualified/fully trained personnel at field level.

•

Cylinders having an outside diameter of 2 inches or less and a length of less than 2 feet are exempt from hydrostatic test. The F-2B and LRU-1/P require hydrostatic test every 5 years. The 25-Man test interval is 3 years.

•

•

The following publications are required to perform assigned mission; TO 42B5-1-2, CFR Title 49, Department of Transportation Code of Federal Regulation. For the 25-Man life raft cylinder, use MIL-R-8573 and any other appropriate directives. A cylinder may exceed hydrostatic test date and remain in service provided the cylinder complies with conditions as outlined in TO 42B51-2.

8.1.1 General. Overhaul of multiplace carbon dioxide cylinders consists of the following: •

Disassembly.

•

Cleaning for conventional and Powder Coating.

•

Inspection.

•

Permanent volumetric expansion.

•

Cleaning, surface preparation, and treatment of cylinder.

8.1.2 Disassembly. To disassemble the cylinder, proceed as follows:

Ensure cylinder is empty. To discharge cylinder, secure cylinder in a rubber lined chain vise or other approved clamping device before discharging.

To prevent damage to valve, only proper size wrench shall be used. a. Remove cable and housing from valve. b. Remove valve assembly from cylinder. c. Remove flexible siphon tube. NOTE Cylinders, PN MS26545B2C0415 and PN MS26545B2C0205A are not wire wrapped, but are approved cylinders. d. If cylinder requires hydrostatic test, remove wire from cylinder with the aid of a hammer and chisel, being careful not to scratch cylinder. Cut brass end piece to obtain a free end of wire. Starting with free end, remove wire by hand or any other feasible method.

8-1

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 8.1.3 Cleaning For Conventional and Powder Coating. To clean the cylinder, proceed as follows:

•

•

•

Paint remover, MIL-R-25134 contains toxic ingredients. Release pressure slowly when opening to prevent contents from contacting skin. Use only in a well-ventilated area. Avoid breathing of vapors. Full face shield and chemical gloves shall be worn. Keep away from sparks and flames. Use approved personal protective equipment (goggles/face shield) when using compressed air. Provide protection from flying particles when using compressed air. Do not direct airstream toward self or other personnel. Maximum allowable air pressure for cleaning operations is restricted to less than 30 PSI. Solvent, MIL-PRF-680, Type III or A-A-590613B, may affect skin, eyes and respiratory tract. Use in well-ventilated area. Avoid prolonged breathing of vapors. Avoid eye and repeated skin contact. Keep away from sparks and flames. NOTE

Sandblasting is approved as an alternate method of cleaning the cylinders. a. Tightly install a plug in cylinder and remove paint by immersion in a solution conforming to MIL-R-25134. b. Remove cylinder and rinse in a tank of hot water. Remove any remaining paint particles by brushing and rinsing. c. Give cylinder a final rinse in cold water. This may be accomplished by means of a spray nozzle. 8.1.4 lows:

Inspection. To inspect the cylinder, proceed as fol-

b. Ensure cylinder is free of extensive scratches, dents, corrosion, or any other defects that tend to weaken cylinder to the extent it is unsafe for further use as a high pressure carbon dioxide container. c. Ensure steel indented ICC markings are present on top dome of cylinder. 8.1.5 Permanent Volumetric Expansion. To perform the permanent volumetric expansion, proceed as follows: NOTE Activities not having hydrostatic testing capability will either contract locally at a certified hydrostatic facility for repair/overhaul of cylinder and valve assemblies or tag cylinder and valve assembly “CONDITION CODE D” and forward to FB2065. 8.1.5.1 Cylinder shall be hydrostatically tested every 5 years at 5/3 the working pressure. Working pressure in PSI will be found on top dome of cylinder as the suffix of a composite number. For example, if the number is ICC3A1800, the suffix 1800 designates the working pressure. The permanent volumetric expansion must not exceed the percent of the total volumetric expansion after pressure has been released. 8.1.5.2 The hydrostatic test shall be conducted by waterjacket or other suitable method and operated to obtain accurate data. The pressure gauge used for the test must permit reading to an accuracy of one percent. The expansion gauge must permit reading of total expansion to an accuracy of either one percent or 0.1 cubic centimeter. Pressure must be maintained for at least 30 seconds and sufficiently longer, if necessary, to ensure complete expansion. 8.1.5.3 If the permanent volumetric expansion of cylinder is more than ten percent of total volumetric expansion, cylinder shall be rejected, made unserviceable by damaging the threads, and tagged “CONDEMNED”. If percentage of permanent volumetric expansion is ten percent or less, cylinder is satisfactory and date of test shall be stamped below previous date mark with a steel indentation stamp using number of the month and last two digits of the year. (Example: May 1984 would be 5-84.) The lettering shall not be less than 1/8 inch high.

NOTE Cylinders not meeting requirements outlined in steps a through c shall be rejected, rendered unserviceable by damaging threads, and tagged “CONDEMNED”. a. Inspect threads to ensure conformance, threads shall have a smooth finish and free of defects which would make the threads unsuitable for the purpose intended.

8-2

8.1.6 Surface Preparation and Treatment of Cylinder. To clean and prepare surface, proceed as follows:

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

•

•

The following procedure must be accomplished in an approved plating facility. Cleaning, pickling, and plating solutions and their vapors may be hazardous. Proper environmental and personnel protection must be employed. Chemical goggles, rubber apron, acid-resistant safety shoes/boots and chemical gloves will be worn. Work will be accomplished in a well ventilated area; avoid prolonged breathing of chemical vapors. If in doubt of safety or health measures, contact assigned Bioenvironmental Engineer. Caustic solution can cause severe skin burns.

a. Submerge cylinder in an alkaline rust remover at a temperature of 100 °F (38 °C) for approximately 20 to 30 minutes to remove organic soils prior to pickling and applying phosphate coating. b. Thoroughly drain and rinse cylinder, inside and outside, with cold water. c. Remove the plug or cap from cylinder and pickle cylinder in a 15 percent solution (by weight) of sulphuric acid, PN A300C containing a suitable inhibitor for 5 minutes at 160 °F (71 °C) to remove phosphate coating and corrosion. d. Thoroughly drain and rinse cylinder, inside and outside, with cold water. e. Process interior and exterior surface of cylinder in accordance with MIL-C-490 or TT-C-490.

Acids can cause severe skin burns. NOTE Activities without phosphate-coating capabilities (MIL-C-490 or TT-C-490) shall ship cylinders to nearest activity having phosphate-coating facilities. Light forge cylinders do not require phosphate coating. Phosphate coat heavy forge cylinders only as required. f. Immediately drain and rinse cylinder, inside and outside, with a hot solution, 140 to 160 °F (60 to 71 °C), of 1½ ounces of chromic acid, PN 0C303 and 1½ ounces of corrosion remover, MIL-C-10578, mixed in 100 gallons of distilled deionized water.

g. After rinsing, dry and inspect cylinder. Drying procedure shall be such that dried parts are above room temperature. Using a borescope, inspect and reject any cylinder in which signs of corrosion are found. A cylinder rejected at this point will not be reprocessed.

Primer, Zinc Chromate, TT-P-1757 is highly toxic to skin, eyes and respiratory tract. Chemical goggles and chemical gloves will be worn. h. If the cylinder is acceptable, install a plug in the cylinder and apply a coat of zinc chromate primer conforming to TT-P-1757 to the exterior surface. NOTE Cylinders, PN MS26545B2C0415 and PN MS26545B2C0205A, are not wire wrapped, but are approved cylinders. 8.1.7 Rewinding. Rewind the cylinder with 0.029 or 0.030 inch diameter spring wire, 350,000 PSI minimum tensile strength, Specification QQ-W-470. To rewind cylinders, proceed as follows: NOTE Activities not having rewinding capability will either contract a local private facility that specializes in repair and overhaul of cylinder and valve assemblies or tag cylinder and valve assembly “CONDITION CODE D” and forward to FB2065. a. Locally manufacture a set of chucks and sleeves for each of various size cylinders. Cylinder to be rewound shall be set in a lathe between chucks, consisting of a dome stock chuck, tailstock chuck, a dome stock chuck sleeve and a tailstock chuck sleeve. See Figure 3-4. b. Locally manufacture an end ring from dead-soft yellow brass, ½ inch wide by 0.012 inch thick. Fit brass end ring over cylinder and against dome stock chuck sleeve. See Figure 3-4. c. Insert the wire end into a small hole in dome stock chuck sleeve and secure with a setscrew. See Figure 8-1. d. Start lathe at a slow speed until enough coils of wire have been wound to cover the brass end ring. e. Maintain a tension of approximately 45 pounds on wire.

8-3

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 f. When cylinder has been wound to within ½ inch of tailstock chuck sleeve, stop machine and fit a brass end ring against tailstock chuck sleeve.

8.1.8 lows:

Soldering. To solder the cylinder, proceed as fol-

g. Start and operate lathe at slow speed for remainder of winding. h. Two layers of wire are required for all cylinders undergoing overhaul. The second layer of wire will be wound over first layer by reversing direction of feed. Wire will not be spliced or pieced together but will be of one continuous piece. i. At end of winding, stop machine and hold tension on wire. j. Peen brass end pieces over layers of wire to prevent unraveling or solder end of wire winding; then cut wire free. k. Apply a spinning tool to brass end pieces to lay them down snugly around entire circumference using a lathe or other feasible method. l. Remove cylinder from lathe by extracting tailstock.

•

Avoid breathing fumes generated by soldering/ unsoldering. Perform all operations in a wellventilated area.

•

Upon completion of soldering, ensure cylinder has cooled sufficiently for safe handling.

a. After cylinder has been rewound, place cylinder in a controlled oven at 400 °F (204 °C) and preheat (for 30 minutes) cylinder to proper temperature for soldering. b. Remove cylinder from oven. Using a brush or other feasible means, apply solder flux MIL-F-14256 or equivalent. When applying flux, care should be taken to obtain complete coverage of wire-wound surface. c. Lower cylinder into solder bath (solder conforming to QQ-S-571) and rotate until a smooth, bright coat of solder is evident. d. Withdraw cylinder from bath and rotate, wiping with a felt pad, cloth or sponge saturated with water to remove any excess solder. e. Place cylinder in a water tank and rinse vigorously. Remove cylinder from water tank and allow to air dry. 8.1.9 Painting For Conventional. To paint cylinder, proceed as follows:

Figure 8-1.

8-4

Wire Winding Attachment

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

•

•

Primer, Zinc Chromate, TT-P-1757 is highly toxic to skin, eyes and respiratory tract. Chemical goggles and chemical gloves will be worn. Paints, primers, lacquers, and varnishes must be handled carefully and used only in well-ventilated approved areas. Avoid prolonged breathing of vapors. Avoid eye and repeated skin contact. Keep away from sparks and flames.

Do not apply paint to threads of cylinder. a. Install a plug in cylinder and apply a coat of zinc chromate primer conforming to TT-P-1757 to exterior surface. NOTE Ensure primer has thoroughly dried before continuing. b. Paint exterior surface of cylinder with two coats of aircraft gray lacquer conforming to A-A-3165 or one coat of gray enamel conforming to TT-E-489 or A-A2962.

Do not apply coating to threads of cylinder. d. Apply Powder Coat Primer (13-7004 Rohm/Haas Corvel Zinc Rich Gray or equivalent) to exterior surface cylinder. e. Place cylinder in oven at 375 °F for 10 minutes. f. Remove cylinder from oven and allow cylinder to cool to room temperature. g. Apply Powder Coat Top Coat (30-7568 Rohm/Haas Corvel Signal Gray or equivalent) to exterior surface of cylinder. h. Place cylinder in oven at 375 degrees for 60 minutes. i. Remove cylinder from oven and allow cylinder to cool to room temperature before removing cylinder from paint rack. 8.1.10 Reassembly. To reassemble cylinder, proceed as follows: a. Prior to reassembly, remove plug and reinspect interior of cylinder for foreign matter or moisture. Resurface seating surface when it has become rough or pitted.

8.1.9.1 Powder Coating. To Powder coat cylinder, proceed as follows:

•

Personnel applying powder coating are required to follow all manufacturers’ equipment operation and safety requirements.

•

Personnel handling heated parts must be adequately protected to prevent injury resulting from contact with these parts.

•

Acetone D329-09 is toxic. Avoid contact with eyes and skins. Do not breathe vapors.

a. Remove old paint using Walnut Hull Blast media (Blast conforming to MIL-STD-1504B). b. Remove surface corrosion using Glass Bead Blast media (Blast conforming to MIL-STD-1504B).

Use approved personal protective equipment (goggles/face shield) when using compressed air. Provide protection from flying particles when using compressed air. Do not direct airstream toward self or other personnel. Maximum allowable air pressure for cleaning operations is restricted to less than 30 PSI. b. Remove (if present) any foreign matter or moisture by purging cylinder with dry nitrogen or air. c. Coat cylinder threads with grease, MIL-PRF-27617 or anti-seize compound, MIL-PRF-907. Teflon tape, MILT-27730 may be used on the carbon dioxide cylinder threads only in lieu of compound. Ensure that no tape is installed on first two threads of cylinder neck. Insert new washer (Figure 8-2, 3) into valve body (Figure 8-2, 26). Insert siphon tube (Figure 8-2, 2) approximately 22 inches, PN A128-14B-2206, NIIN 00-4959153 only into cylinder and attach valve assembly.

c. Hang cylinder on paint rack and clean with Acetone D329-09.

8-5

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 NOTE Only proper size wrench will be used to install valve or damage will occur. d. Place assembly in a rubber lined chain vise or other approved clamping device. Using a calibrated torque wrench, torque the valve to 165 to 175 FTLB.

8-6

Recheck torque of valve safety outlet plug (18) for required 350 inlb. e. For cylinder markings, refer to Paragraph 8.10. f. To recharge cylinder, refer to Paragraph 8.7.1.

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 8-2.

Cylinder and Valve Assembly PN 55C3689(KM)

8-7

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 8-3.

USE ONLY cable assemblies with wire extensions of 1/2” + 0 - 1/16” (no less than 7/16”) beyond the swage ball with all valves other than PN 9864-05. Doing so may cause valves other than PN 9864-05 to bind preventing the raft from inflating in an emergency event which may result in injury or death to personnel. g. Prior to rigging valve, use cable gauge (Figure 8-3) to measure pull cable (Figure 8-2, 5). Required length shall measure 19-½ to 20 inches. Ball of cable shall be gauge using micrometer or suitable gauge. Required diameter of ball shall be minimum of 0.217 inch and maximum of 0.250 inch. 8.1.11 Reassembly When Valve Assembly, PN 9864-05 is Used. To reassemble cylinder when Valve Assembly, PN 9864-05 is used, proceed as follows: a. Prior to reassembly, remove plug and reinspect interior of cylinder for foreign matter or moisture.

Use approved personal protective equipment (goggles/face shield) when using compressed air. Provide protection from flying particles when us-

8-8

Change 1

Cable Gauge ing compressed air. Do not direct airstream toward self or other personnel. Maximum allowable air pressure for cleaning operations is restricted to less than 30 PSI. b. Remove any foreign matter or moisture by purging cylinder with dry nitrogen or air. c. Apply primer, Loctite Grade T, MIL-S-22473 or ASTM D5363 and adhesive sealant, Loctite 271, MIL-S-46163 to lower valve body (Figure 8-4, 18). Teflon tape, MIL-T-27730 or equivalent may be used on the carbon dioxide cylinder threads only, in lieu of Loctite Grade T Primer and Loctite 271 sealant. Ensure that no tape is installed on first two threads of cylinder neck. Insert siphon tube (Figure 8-2, 2) into cylinder. d. Ensure that a new disc cartridge (Figure 8-4, 28) is installed finger-tight into lower valve body.

Only proper size wrench shall be used to torque valve or damage will occur. e. With carbon dioxide cylinder in inverted position, install a new copper washer (29) PN 1621477-1 and lower valve body (18). Place assembly in a rubber-

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 lined rubber lined chain vise or other approved clamping device. Using a calibrated torque wrench, torque the lower valve body to 140 +10/-5 FTLB.

g. To recharge cylinder, refer to Paragraph 8.7.2.

f. For cylinder markings, refer to Paragraph 8.10.2.

Change 1

8-8.1/(8-8.2 blank)

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 8-4.

Valve Assembly, PN 9864-05

8-9

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

SECTION II CARBON DIOXIDE INFLATION VALVES 8.2

OVERHAUL OF INFLATION VALVES.

(5) Tubing assembly PN 23794 (Figure 9-4, index 10) with a length of 15 to 15 1/2 inches. 8.2.1.1 Disassembly. To disassemble valve, proceed as follows:

DO NOT commingle parts. This may cause a slow inflation and not allow the raft to detach from the aircraft. Overhaul of inflation valves is limited to polishing surface components with crocus cloth to remove light scratches and replacement of damaged or worn parts.

Ensure cylinder is empty. To discharge cylinder, secure cylinder in a vise or other approved clamping device before discharging.

NOTE

NOTE

Defective valves manufactured by Stewart Precision Co. will be disposed of.

Disassembly should be accomplished only to the degree necessary to effect required repair.

8.2.1 Multiplace Cylinder Valves. Overhaul of multiplace cylinder valves consists of the following:

a. Disassemble valve in order of the index numbers in Figure 8-2.

a. Disassembly. b. Replacement of worn parts and reassembly. c. Due to the different configurations, inspect for the following:

•

Use approved personal protective equipment (goggles/face shield) when using compressed air. Provide protection from flying particles when using compressed air. Do not direct airstream toward self or other personnel. Maximum allowable air pressure for cleaning operations is restricted to less than 30 PSI.

•

Solvent, MIL-PRF-680 (A-A-59601-3B) may affect skin, eyes, and respiratory tract. Use in well ventilated area. Avoid prolonged breathing of vapors. Avoid eye and repeated skin contact. Keep away from sparks and flames.

(1) The Sparklet Devices, Plug assembly, PN A-128-3B see Figure 8-2, 23 for illustration. (2) The VEE MFG, (no part number) Plug assembly, should be a solid head with a slot for standard screw drivers, approximately ½ inch in length. (3) The cable assembly, PN 55C3689-6 or 8140709-10 is designed with two different brass ball ends. Option 1 with a 5/16 inch diameter brass rod (ball with a taper end) and with no wire extending at the end. Option 2 with a wire cable 19½ to 20 inches in length, a swage ball (at the end) and an extending wire 0.500 +0.125/-.0 inches beyond the swage ball. (4) Valve Assembly PN 9864-05 (Figure 9-4) utilizes cable assembly PN 23801, with a length of 21 to 22 inches. Swage ball without an extending end (tail) beyond the swage.

8-10

NOTE Valves manufactured by Stewart Precision Co. are not repairable and shall be replaced when defective. b. Remove any accumulation of dirt or grease from parts with dry-cleaning solvent, MIL-PRF-680, A-A-596013B. Dry parts with clean dry air.

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 8.2.1.2 Replacement of Worn Parts and Reassembly. To replace worn parts and reassemble valve, proceed as follows:

b. Remove and discard O-ring (24).

a. Replace worn or damaged parts. Diffuser cap PN 24384 shall be installed whenever a charged cylinder is being transported or placed in storage without having upper valve body installed. Ensure only one safety disc is installed when being replaced. These items are thin and will stick together. Installing two safety discs could render valve inoperable. NOTE Ensure lithographing on safety disc is facing out on valve when installed. b. Reassemble valve in reverse order of the index numbers in Figure 8-2. c. Reinstall valve on cylinder in accordance with Paragraph 8.1.10. 8.2.2 Valve Assembly, PN 9864-05. Overhaul of Valve Assembly, PN 9864-05, consists of the following: •

Disassembly.

•

Cleaning.

•

Assembly and Lubrication.

c. If cylinder is not empty, install diffuser cap with four screws (16). Cylinder can be removed from clamping device if desired. d. Remove plunger assembly (19), O-ring (20) and two O-rings (21). Discard O-rings. e. Remove two vent manifold valves (22) and two compression springs (23). Discard parts. f. Remove end cap (5), end cap diffuser (6) if installed, and two gaskets (7). Discard gaskets. g. If valve assembly has been actuated, or if the safety wire has been broken, or if the green dot is not completely visible through the window of the cover assembly (4), remove seal (1) PN MS51938, safety wire (2), two screws (3) and cover assembly. Discard seal and safety wire. h. If safety wire has been removed, remove cable assembly (8), if still attached.

8.2.2.1 Disassembly. To disassemble Valve Assembly, PN 9864-05, See Figure 8-4 and proceed as follows:

If valve is installed on a cylinder, prior to disassembling valve, determine if the cylinder is empty. If it is not, secure cylinder in a vise or other approved clamping device before disassembling. NOTE • •

Disassembly should be accomplished only to the degree necessary to effect required repair. Valves being overhauled, found to be defective, or actuated with CO2, will have repair kit PN 9968 installed and other parts replaced as required.

a. Remove four screws (Figure 8-4, 16) and separate upper valve body (17) from lower valve body (18).

•

If further disassembly of lower valve body is required, cylinder must be discharged. To discharge cylinder, secure cylinder in a vise or other approved clamping device before discharging.

•

Do not remove disc cartridge when installed on a charged cylinder.

i. If disc cartridge (28) has been punctured or leaks, remove and discard it. j. If rupture disc (26) has been burst or leaks, remove safety port fitting (25), rupture disc, and safety port washer (27). Discard rupture disc and safety port washer. k. If lower valve body must be removed from cylinder, discard copper washer (29).

8-11

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 l. If tubing assembly (10) is loose, kinked, or damaged, remove screw (9) and tubing assembly. m. If plug assembly (12) is loose or damaged, remove screw (11) and plug assembly. n. If the locking element of screw (13) is worn, remove screw, spring (14), and ball (15). Discard screw.

d. Use sonic energy cleaning system, Bendix PN 3272201-1000 or equivalent, as an alternate method of cleaning parts. Blow dry parts with clean dry air with a pressure not exceeding 30 PSI. 8.2.2.3 Assembly and Lubrication. To assemble and lubricate Valve Assembly, PN 9864-05, proceed as follows:

8.2.2.2 Cleaning. To clean valve assembly, PN 9864-05, proceed as follows: NOTE •

Valve assembly must be disassembled as per Paragraph 8.2.2.1 through step h. prior to cleaning. Do not attempt to clean lower valve body if it is attached to a charged cylinder. If lower valve body and related parts must be cleaned, cylinder must first be discharged as per Paragraph 8.2.2.1.

•

Parts with dry lubricant shall not be immersed in solvent. These parts shall be wiped clean by hand using solvent, avoiding contact with the dry lubricant.

•

Non-metallic parts shall not be cleaned with solvent.

a. Disassemble valve assembly in accordance with Paragraph 8.2.2.1.

•

Ensure only one rupture disc (Figure 8-4, 26) is installed when being replaced. These items are thin and will stick together.

•

Ensure safety port washer (27) is installed prior to rupture disc.

a. Install safety port washer into side port of lower valve body (18), being sure that it seats squarely. b. Lightly coat both sides of rupture disc with lubricant, Dow Corning, 7 Compound, and install into port behind safety port washer, being sure that it sits squarely. c. Visually inspect burst diameter of safety port fitting (25). It should be sharp and not nicked from handling. Replace if necessary. Install safety port fitting and torque 17 to 20 FTLB. d. Install disc cartridge (28) finger tight. e. Install lower valve body on carbon dioxide cylinder in accordance with Paragraph 8.1.11.

•

•

Solvent, MIL-PRF-680 Type III or A-A59601-3B may affect skin, eyes and respiratory tract. Use in a well-ventilated area. Avoid prolonged breathing of vapors. Avoid eye and repeated skin contact. Keep away from sparks and flames. Use approved personal protective equipment (goggles/face shield) when using compressed air. Provide protection from flying particles when using compressed air. Do not direct air stream toward self or other personnel. Maximum allowable air pressure for cleaning operations is restricted to less than 30 PSI.

b. Place parts in a suitable cleaning tray and clean with dry cleaning solvent MIL-PRF-680 Type III or A-A59601-3B. c. Dry parts with clean dry air with a pressure not exceeding 30 PSI.

8-12

f. Install plug assembly (12) into upper valve body (17) and lightly tighten with a wrench. g. Install screw (11) and torque 3 to 5 inlb. h. Install tubing assembly (10) into upper valve body and lightly tighten with a wrench. i. Install screw (9) and torque 3 to 5 inlb. j. Ensure that one-way slot screw (31) is torqued 10 to 12 inlb. k. Apply lubricant, Dow Corning, 7 Compound to two vent manifold valves (22). l. Install two compression springs (23) over stem of vent manifold valves, and install into upper valve body.

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 m. Press and release each vent manifold valve to be sure that they do not stick or bind. n. Apply lubricant, Dow Corning, 7 Compound to small, central bore, large bore with four vent holes, and stepped surface in bottom of upper valve body. o. Install ball (15), spring (14), and screw (13) into upper valve body. Tighten screw until it is approximately flush with surface. p. Slowly rotate actuating cam assembly (32) counterclockwise until it properly seats with actuator arm assembly (33). q. Apply lubricant, Dow Corning, 7 Compound to O-ring (20) and two O-rings (21) and install on plunger assembly (19). r. Install plunger assembly into upper valve body. NOTE To ensure that plunger is properly seated in the ball detent, check to be sure that four vent holes are visible just below lower surface of plunger assembly. s. Loop a paper clip through web on bottom of plunger assembly, hook pull gauge onto paper clip, and measure the force required to pull the plunger assembly from the detent position. The force required shall be from 4 to 5 lbs. To increase, turn screw (13) clockwise; to decrease, turn screw counterclockwise. After adjusting force, re-install plunger into upper valve body.

Be sure that ball is in proper seat according to a down pull or on an up pull configuration. (See Figure 8-10) x. Install cover (4), two screws (3), safety wire (2) and seal (1) MS51938, in accordance with Paragraph 8.9.3. y. Apply lubricant, Dow Corning, 7 Compound to lower bore of upper valve body.

Prior to assembling valve, determine if the cylinder is empty. If it is not, secure cylinder in a vise or other approved clamping device before disassembling. z. If installed, remove the diffuser cap from lower valve body. aa. Apply lubricant, Dow Corning, 7 Compound, to Oring (24) and install on lower valve body. ab. If necessary, recharge carbon dioxide cylinder in accordance with Paragraph 8.7.2.

•

To ensure that the plunger assembly is in the correct position, check to Refer to that four vent holes are visible. The plunger assembly is in the correct position when the vent holes are visible just below the lower edge of the plunger.

•

It is essential to ensure that the plunger assembly is in the correct position prior to assembling upper and lower valve bodies, otherwise, premature carbon dioxide discharge could result.

t. Install two gaskets (7) onto outlet ports of upper valve body.

End cap diffuser and end cap shall be installed whenever a charged carbon dioxide cylinder is being transported or placed in storage. u. Install end cap diffuser (6) and end cap (5). Torque end cap 9 to 11 FTLB.

ac. Attach upper valve body to lower valve body, noting orientation, with four screws (16). Torque screws evenly 12 to 15 inlb.

v. Verify that actuating cam assembly is rotated fully counterclockwise. w. Route ball end of cable assembly (8) up through tubing assembly and around actuating cam assembly. Be sure ball is in the proper seat and that the cable rides in the groove of actuating cam assembly.

8-13

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

SECTION III 25-MAN LIFE RAFT CYLINDER 8.3

OVERHAUL OF 25-MAN CYLINDER.

Compressed gas is under pressure. Do not attempt to remove the discharge valve assembly from the reservoir assembly. Do not stand in front of discharge valve assembly outlet fitting when discharging reservoir. Force from escaping air can cause bodily injury. Serious injury or death can result from loosened parts being ejected with over 3000 PSIG of pressure. Use approved personal protective equipment (goggles/face shield, hearing protection) when using compressed gas. Ensure that ends of tee fitting are pointed in a safe direction to prevent injury from airborne particles. NOTE •

•

Overhaul will be accomplished by aircraft environmental system repair personnel or qualified/fully trained personnel at field level. The following publications are required to perform assigned mission: TO 42B5-1-2, CFR Title 49, Department of Transportation Code of Federal Regulations, and MIL-R-8573.

8.3.1 General. Overhaul of 25-Man life raft cylinders consists of the following:

8-14

•

Disassembly.

•

Cleaning for conventional and Powder Coating.

•

Inspection.

•

Overpressure test reservoir.

•

Priming.

•

Rewinding.

•

Soldering.

•

Painting for conventional.

•

Powder Coating.

•

Reassembly.

8.3.2 Disassembly. To disassemble the cylinder, proceed as follows:

Ensure cylinder is empty. To discharge cylinder, secure cylinder in a rubber lined chain vise or other approved clamping device before discharging.

To prevent damage to valve, only proper size wrench will be used. NOTE For complete disassembly and reassembly of cylinder and valve assembly, refer to Paragraph 8.4. a. Remove hose assembly from valve. b. Remove valve assembly from cylinder. NOTE 25-Man cylinders require hydrostatic test every 3 years. c. If cylinder requires hydrostatic test, remove wire from cylinder with the aid of a hammer and chisel, being careful not to scratch cylinder. Cut brass end piece to obtain a free end of wire. Starting with free end, stripping is accomplished by pulling wire. d. If cylinders are received with interior corrosion or chipping, these cylinders should be stripped and phosphate coated in accordance with TO 42C2-1-7. 8.3.3 Cleaning For Conventional and Powder Coating. To clean the cylinder, proceed as follows:

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 valve assemblies or tag cylinder and valve assembly “CONDITION CODE D” and forward to FB2065. Paint remover, MIL-R-25134 contains toxic ingredients. Release pressure slowly when opening to prevent contents from contacting skin. Use only in a well-ventilated area. Avoid breathing of vapors. Full face shield and chemical gloves shall be worn. Keep away from sparks and flames.

a. It will be necessary to overpressure test the reservoir every 3 years in accordance with MIL-R-8573. Permissible permanent volumetric expansion shall be in accordance with of CFR Title 49, Department of Transportation Code of Federal Regulations.

NOTE

b. Replace reservoirs requiring pressure-testing with approved reservoirs that have been pressure-tested.

Sandblasting is approved as an alternate method of cleaning cylinders.

8.3.6

Priming. To prime cylinder, proceed as follows:

a. Tightly install a plug in cylinder and remove paint by immersion in a solution conforming to MIL-R-25134. b. Remove cylinder and rinse in a tank of hot water. Remove any remaining paint particles by brushing and rinsing.

Primer, Zinc Chromate, TT-P-1757 is highly toxic to skin, eyes and respiratory tract. Chemical goggles and chemical gloves will be worn.

c. Give cylinder a final rinse in cold water. This may be accomplished by means of a spray nozzle. 8.3.4 lows:

Inspection. To inspect the cylinder, proceed as fol-

Do not apply primer to threads of cylinder.

NOTE

a. Install a plug in cylinder to prevent primer from entering cylinder.

Cylinders not meeting requirements outlined in steps a. through c. shall be rejected, rendered unserviceable by damaging threads, and tagged “CONDEMNED”.

b. Apply a coat of zinc chromate primer conforming to TT-P-1757 to exterior surface.

a. Inspect threads to ensure conformance, threads shall have a smooth finish and free of defects which would make the threads unsuitable for the purpose intended. b. Ensure cylinder is free of extensive scratches, dents, corrosion or any other defects that tend to weaken cylinder to the extent it is unsafe for further use as a high-pressure air cylinder. NOTE Welded cylinders have no ICC markings. c. Ensure steel-indented ICC markings are present on top dome of cylinder.

NOTE Ensure primer has thoroughly dried before continuing. 8.3.7 Rewinding. Rewind cylinders in accordance with Paragraph 8.1.7. NOTE •

Welded cylinders do not require wirewrapping.

•

Activities not having rewinding capability will either contract a local private facility that specializes in repair and overhaul of cylinders or tag cylinder “CONDITION CODE D” and forward to FB2065.

8.3.5 Overpressure Test Reservoir. To perform the overpressure test, proceed as follows:

8.3.8 Soldering. Solder cylinders in accordance with Paragraph 8.1.8.

NOTE

8.3.9 Painting for Conventional. To paint cylinder, proceed as follows:

Activities not having hydrostatic testing capability will either contract a local private facility that specializes in repair and overhaul of cylinder and

8-15

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 c. Hang cylinder on paint rack and clean with Acetone D329-09. Paints, primers, lacquers and varnishes must be handled carefully and used only in well-ventilated, approved areas. Avoid prolonged breathing of vapors. Avoid eye and repeated skin contact. Keep away from sparks and flames.

Do not apply coating to threads of cylinder. d. Apply Powder Coat primer (13-7004 Rohm/Haas Corvel Zinc Rich Gray or equivalent) to exterior surface of cylinder.

Do not apply paint to threads of cylinder. a. Install a plug in cylinder and apply a coat of zinc chromate primer conforming to TT-P-1757 to exterior surface. NOTE Ensure primer has thoroughly dried before continuing. b. Apply two coats of black enamel, MIL-E-24306 or MIL-P-24441/23 to exterior surface. 8.3.9.1 Powder Coating. To Powder coating cycle, proceed as follows:

f. Remove cylinder from oven and allow cylinder to cool to room temperature. g. Apply Powder Coat Top Coat (30-7568 Rohm/Haas Corvel Signal Gray or equivalent) to exterior surface of cylinder. h. Place cylinder in oven at 375 °F for 60 minutes. i. Remove cylinder from oven and allow cylinder to cool to room temperature before removing cylinder from paint rack. 8.3.10 Reassembly. To reassemble cylinder, proceed as follows: a. Prior to reassembly, remove plug and reinspect interior of cylinder for foreign matter or moisture.

•

Personnel applying powder coating are required to follow all manufacturers’ equipment operation and safety requirements.

•

Personnel handling heated parts must be adequately protected to prevent injury resulting from contact with these parts.

•

Acetone D329-09 is toxic. Avoid contact with eyes and skins. Do not breathe vapors.

a. Remove old paint using Walnut Hull Blast media (Blast conforming to MIL-STD-1504B). b. Remove surface corrosion using Glass Bead Blast media (Blast conforming to MIL-STD-1504B).

8-16

e. Place cylinder in oven at 375 °F for 10 minutes.

Use approved personal protective equipment (goggles/face shield) when using compressed air. Provide protection from flying particles when using compressed air. Do not direct air stream towards self or other personnel. Maximum allowable air pressure for cleaning operations is restricted to less than 30 PSI. b. Remove (if present) any foreign matter or moisture by purging cylinder with dry nitrogen or air.

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 c. Lubricate preformed packing and install packing on cylinder fitting of universal valve assembly.

e. For cylinder markings, refer to Paragraph 8.10.3. f. To recharge cylinder, refer to Paragraph 8.7.3.

Only proper size wrench will be used to install valve or damage will occur. d. Place assembly in a rubber lined chain vise or other approved clamping device. Using a calibrated torque wrench, torque valve to 700 to 1150 inlb.

SECTION IV 25-MAN LIFE RAFT DISCHARGE VALVE 8.4 OVERHAUL OF UNIVERSAL VALVE ASSEMBLY, PN 18D18167-1. 8.4.1 General. Only maintenance facilities with repair capabilities shall remove and replace discharge valve assembly, PN 18D18167-1. Refer to Table 3-1 for special tools and materials required to replace the discharge valve assembly. After repair or replacement of discharge valve assembly, perform leakage test in accordance with Paragraph 8.8.2. 8.4.2 Disassembly of Reservoir Assembly (When Valve Assembly, PN 18D18167-1 is Used). To disassemble reservoir assembly proceed as follows: NOTE Disassembly should be accomplished only to the degree necessary to effect the required repair. Index numbers are assigned in disassembly sequence, except for attaching parts (screws, washers, etc.) which are listed immediately following the parts they attach. a. Disconnect hose assembly (Figure 8-5, 1) from the jet pump inlet port (Figure 9-12, 7). Loosen lacings on the life raft reservoir cover and remove reservoir assembly from the life raft. b. If an air charge is present in reservoir, remove hose assembly (Figure 8-5, 1) and securely anchor reservoir in a rubber lined chain vise or equivalent to prevent

movement. Attach a tee fitting to valve outlet fitting (Figure 8-6, 16) and point ends of tee towards areas which are clear of objects that could be blown out by escaping air.

Do not stand in front of outlet fitting when discharging cylinder as the force of escaping air can cause bodily injury. c. Insert a suitable allen wrench into hex opening in pulley (Figure 8-6, 4) and use wrench to open valve just enough to allow air charge to bleed off. d. Remove valve assembly (Figure 8-5, 5) from cylinder (6). Remove gauge (3) from valve assembly (5). e. Remove retaining ring (Figure 8-6, 19) and shell (20) from gauge protector fitting (21). 8.4.3 Disassembly of Universal Valve, PN 18D18167-1. To disassemble universal valve, proceed as follows (Figure 8-6): a. Remove retaining ring (1) that secures top plate (3) in valve body (29). Lift top plate (3) from valve body. Do not remove bearing (2) from top plate (3) unless it is obviously damaged.

8-17

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 8-5.

Reservoir Assembly

b. Lift pulley (4) from valve body (29) carefully, to prevent losing detent pin (6) and spring (5). Remove pin and spring from pulley. Spring pin (7) will remain in pulley recess; it is a press fit. Do not remove pin unless it is damaged. If pin (7) is removed, discard it. c. Remove relief valve (8) from valve body (29). Remove preformed packing (9) from relief valve (8). d. Remove gauge protector fitting (21) from valve body (29). Remove preformed packing (22) from fitting. e. Remove bottle fitting (11) from valve body (29) carefully; do not let spring (13), ball guide (14), and ball (15) fall from valve body. f. Remove spring (13), ball guide (14), and flow ball (15) from the valve body (29). g. Remove tube (10) when required (damaged) and preformed packing (12) from bottle fitting (11). h. Remove outlet fitting (16) from valve body (29). Remove preformed packing (17) from fitting. Remove ball seat (18) from body valve. i. Remove filler valve (23) from valve body (29). Remove preformed packing (24) from filler valve (23).

8-18

j. Remove shaft (25) from valve body (29). Remove back-up ring (28), preformed packing (27), and shaft bearing (26) from shaft (25).

Solvent, MIL-PRF-680, Type III or A-A-59601-3B may affect skin, eyes and respiratory tract. Use in a well-ventilated area. Avoid prolonged breathing of vapors. Avoid eye and repeated skin contact. Keep away from sparks and flames.

Misuse of flammable cleaning solvent in next step may damage equipment. k. Clean parts in dry cleaning solvent, MIL-PRF-680, Type III or A-A-59601-3B. Inspect all parts for wear or damage. l. Discard worn or damaged parts. Replace with new or serviceable parts.

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 8.4.4 Reassembly of Universal Valve, PN 18D18167-1. To reassemble universal valve, proceed as follows: See Figure 8-6 for all index numbers unless otherwise specified.

e. Install shaft bearing (26) on shaft (25). f. Coat preformed packing (27) with the specified lubricant. g. Install preformed packing (27) on shaft (25). h. Install back-up ring (28) on shaft (25).

Do not apply petroleum-based lubricants to preformed packings used on discharge valves and reservoir assemblies as the petroleum base will cause the packings to deteriorate. a. On reassembly, replace all preformed packings.

i. Carefully install shaft assembly into valve body (29), slotted end first, through filler valve port to avoid damaging preformed packing. Use cover tab notch and cable outlet port in body as reference point. See Figure 8-7.

b. Apply a light coat of DC 200 silicone compound or equivalent, to preformed packings.

j. Install ball seat (18) into the groove in outlet fitting (16).

c. Apply a light coat of McLube 1720L lubricant or equivalent, to all male fitting threads and allow to dry. d. Apply a coat of sealing compound, PLS No. 2 or equivalent, to threads of pressure gauge and gauge protector fitting (21).

Figure 8-6.

Universal Valve Assembly

8-19

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 r. Lubricate filler valve port threads in valve body (29) as outlined in step c. s. Lubricate preformed packing (24), and install it on filler valve (23). Install filler valve (23) in valve body (29). t. Lubricate preformed packing (22), and install it on gauge protector fitting (21). Install gauge protector fitting (21) in valve body (29). u. Torque gauge protector (21) to 200 inlb using a suitable pin spanner and torque wrench, TQ50A, Snap-On Tools Corp., Kenosha, WI or equivalent. v. Torque bottle fitting (11) to 200 inlb using a suitable crow foot and torque wrench, TQ50A, Snap-On Tools Corp., Kenosha, WI or equivalent. w. Torque outlet fitting (16) and filler valve (23) to 200 inlb using suitable crow foot and torque wrench, TQ50A, Snap-On Tools Corp., Kenosha, WI or equivalent. Figure 8-7.

Universal Valve

x. Fill detent cavity in body with grease, MoS2 1195, McGee Industries Inc., Aston, PA or equivalent.

k. Lubricate preformed packing (17), and install it on outlet fitting (16). Install fitting into body (29).

y. If spring pin (7) was removed, press a new pin (7) into proper slot of pulley (4).

l. Install flow ball (15) in valve body (29) ensuring that slot in flow ball is aligned with tang on shaft (25) so that shaft tang can be engaged in ball slot.

z. If removed, install bearing (2) in pulley (4).

m. Install ball guide (14) with flat side against flow ball (15) through bottle fitting port.

aa. Place spring (5) on detent pin (6) and insert into counterbore in pulley (4) until pin protrudes through pulley (4). Hold pin while installing pulley to avoid losing pin (6) and spring (5).

n. Insert compression spring (13) in recess on ball guide (14).

ab. Install top plate (3) on top of pulley (4) and press down gently until retaining ring groove in valve body is visible. Install retaining ring (1).

o. Lubricate preformed packing (12), and install it on bottle fitting (11). Install bottle fitting in valve body (29).

ac. Insert a 3/16 inch allen wrench into hex opening in pulley and turn pulley to ensure that it turns freely.

p. Check operation of flow ball (15) by inserting blade of a small screwdriver into slot in top of exposed portion of shaft (25). Sight through outlet fitting (16) and turn shaft. Ball should turn so as to shut off or open passage from bottle fitting to outlet port depending upon direction of rotation. q. Install tube (10) in bottle fitting (11) if previously removed.

8-20

ad. Lubricate preformed packing (9), and install it on relief valve (8). Install relief valve (8) in valve body (29). Torque relief valve to 200 inlb using a suitable crow foot and a torque wrench, TQ50A, Snap-On Tools Corp. ae. Lubricate the gauge threads as specified in step d. Install pressure gauge (Figure 8-5, 3) securely in gauge protector fitting (Figure 8-6, 21). Torque gauge to 40

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 to 65 inlb. Slip gauge ring (19) over gauge protector fitting (21), slide shell (20) over fitting (21), and secure shell in place with retaining ring (19).

i. Connect valve release assembly (Figure 9-13, 1 thru 3) to a spring resiliency tester, MIL-T-43560.

af. Install hose connection nipple (Figure 8-5, 2) in outlet fitting.

j. Turn valve pulley (Figure 8-6, 4) clockwise until detent pin (Figure 8-6, 6) is against stop. Insert ball end of cable assembly (Figure 8-7) until ball engages in slot in pulley.

8.4.5 Reassembling, Charging, and Testing Reservoir Assembly, When Valve Assembly, PN 18D18167-1 is Used. To reassemble, charge, and test reservoir assembly, proceed as follows: See Figure 8-5 for all index numbers unless otherwise specified.

k. Turn pulley (Figure 8-6, 4) counterclockwise until detent pin (6) is aligned with mark on valve top plate (3). Valve is now armed.

a. On reassembly, replace all preformed packings. b. Apply a light coat of DC 200 silicone compound, or equivalent, to preformed packings. c. Apply a light coat of McLube 1720L lubricant or equivalent, to all male threads and allow to dry. d. Lubricate preformed packing (4) and install packing on bottle fitting of universal valve assembly (5). e. Install valve assembly (5) into cylinder (6). Torque valve to 700 to 1150 inlb with a suitable crow foot and torque wrench, TE250, Snap-On Tools Corp., Kenosha, WI or equivalent. f. Insert proper allen wrench into hexagonal opening in pulley (Figure 8-6, 4). Close valve (Figure 8-5, 5) by turning pulley counterclockwise until detent pin (Figure 8-6, 6) is aligned with mark on valve top plate (3). g. To recharge cylinder, refer to Paragraph 8.7.3. h. For leakage test of inflation assembly, refer to Paragraph 8.8.2.

Personnel shall avoid standing in the area in front of the tee fitting when the cylinder charge is released. Failure to observe this rule may result in serious injury due to loose flying objects. l. Clamp cylinder (Figure 8-5, 6) and valve (5) to a work bench using a rubber lined chain vise or other suitable means. Ensure cylinder is immobilized. Remove AN cap from outlet fitting (Figure 8-6, 16) and temporarily attach a tee fitting of suitable size. Point the two openings of tee toward spaces clear of personnel and equipment. m. Check pull force when discharging cylinder. Force shall not exceed 12 pounds. Pull cable in direction it leaves the port to discharge, taking care that it does not rub cable port walls. n. Turn pulley (4) counterclockwise using proper size allen wrench until detent pin (6) is again aligned with mark on valve top plate (3).

8-21

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 o. Remove cylinder (Figure 8-5, 6) from work bench. Remove temporary tee fitting and reinstall AN cap on valve outlet fitting (Figure 8-6, 16); then recharge cylinder as described in Paragraph 8.7.3. 8.5 REPLACEMENT OF DISCHARGE VALVE ASSEMBLY, PN 62314-1. 8.5.1 General. Only maintenance facilities with repair capabilities shall remove and replace discharge valve assembly, PN 62314-1. Refer to Table 3-1 for special tools and materials required to replace the discharge valve assembly. After replacement of discharge valve assembly, perform leakage test in accordance with Paragraph 8.8.2. 8.5.2 Disassembly of Reservoir Assembly When Valve Assembly, PN 62314-1 is Used. To disassemble reservoir assembly, proceed as follows:

Compressed gas is under pressure. Do not attempt to remove the discharge valve assembly from the reservoir assembly. Do not stand in front of discharge valve assembly outlet fitting when discharging reservoir. Force from escaping air can cause bodily injury. Serious injury or death can result from loosened parts being ejected with over 3000 PSIG of pressure. Use approved personal protective equipment (goggles/face shield, hearing protection). Ensure that ends of tee fitting are pointed in a safe direction to prevent injury from airborne particles.

prevent movement. Attach a suitable tee fitting to the discharge valve outlet fitting (Figure 8-8, 11). Ensure that ends of tee fitting are pointed towards areas that are clear of objects that could be blown about by escaping air. c. Insert 3/16 inch allen wrench into hex opening in pulley assembly (Figure 8-8, 5). Carefully turn allen wrench clockwise until charge in reservoir starts to escape. Continue to control bleed-off with allen wrench until charge in reservoir is completely depleted. d. Remove discharge valve assembly and pressure gauge as a unit from reservoir. e. Remove and discard O-ring (Figure 8-5, 4). f. Remove retaining ring securing gauge protector shell from gauge protector fitting (Figure 8-8, 23). Remove pressure gauge (Figure 8-5, 3) from discharge valve assembly. g. Inspect reservoir in accordance with Paragraph 8.3. 8.5.3 Reassembly, Charging, and Testing of Reservoir Assembly When Valve Assembly, PN 62314-1 is Used. To reassemble, charge, and test reservoir assembly, proceed as follows:

Do not apply petroleum based lubricants to Orings used on discharge valve assembly. Petroleum will cause O-rings to deteriorate.

NOTE Disassembly should be accomplished only to the extent necessary to effect the required repair. Index numbers are in disassembly sequence. a. Disconnect hose assembly (Figure 8-5, 1) from jet pump inlet port (Figure 9-12, 7) Loosen lacing on life raft reservoir cover and remove reservoir assembly from life raft. b. If air charge is present in reservoir assembly, remove hose assembly (Figure 8-5, 1) and secure reservoir assembly in a rubber lined chain vise or equivalent, to

8-22

a. Apply a light coat of Krytox 240AZ lubricant or equivalent, to all O-rings. b. Apply a light coat of McLube 1720L lubricant or equivalent, to threads of bottle fitting (Figure 8-8, 6) and allow to dry. c. Apply a light coat of sealing compound PLS No. 2 or equivalent, to thread of bottle on pressure gauge (Figure 8-5, 3) and threads of gauge protector fitting (Figure 8-8, 23).

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 8-8.

Discharge Valve Assembly, PN 62314-1

8-23

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 d. Install pressure gauge (Figure 8-5, 3) securely in gauge protector fitting (Figure 8-8, 23). Torque pressure gauge to 40 to 65 inlb using a TQ50A torque wrench or equivalent.

8.5.4 Disassembly of Discharge Valve Assembly, PN 62314-1. To disassemble discharge valve assembly, PN 62314-1, proceed as follows: See Figure 8-8 for all index numbers unless otherwise specified.

e. Place gauge protector shell over pressure gauge and gauge protector fitting (23). Secure in place with retaining ring.

a. Remove discharge valve assembly from reservoir in accordance with Paragraph 8.5.2.

f. Using O-ring installation tool, TA02612-7, install Oring (7) on large end of bottle fitting (6). Install discharge valve assembly on reservoir and torque to 700 to 1150 inlb using suitable crowfoot wrench and TE250 torque wrench or equivalent.

b. Remove retaining ring (1) from valve body (2). Remove cover plate (3) with bearing (4) and pulley assembly (5). Do not remove bearing from top plate unless it is damaged.

g. Insert 3/16 inch allen wrench into hexagonal opening in discharge valve pulley assembly (5). h. Close valve by lifting detent pin and turning pulley counterclockwise until detent pin is aligned with mark on cover plate (3). i. To charge reservoir, refer to Paragraph 8.7.3. j. To perform leakage test on discharge valve assembly, refer to Paragraph 8.8.2. k. Secure reservoir and valve assembly to workbench using rubber lined chain vise or equivalent, to prevent movement. Remove AN 929-8 cap from outlet fitting (11) and attach tee fitting. Cap ends of tee fitting with AN 929-8 caps. l. Attach a tee fitting to the discharge valve outlet fitting. Cap ends of tee fitting with AN 929-8 caps. m. Using 3/16 inch allen wrench, turn pulley assembly (5) clockwise until detent pin is against end of pin slot. Insert ball ends of valve release cable assembly through opening in valve body until ball engages slot in pulley.

Bottle fitting and flow ball are under light spring tension. To prevent damage to surface of flow ball, remove bottle fitting before removing outlet fitting. c. Remove bottle fitting (6), O-ring (7), spring (8), ball guide (9), and flow ball (10). Discard O-ring. d. Remove outlet fitting (11) with seat (12) and O-ring (13) from valve body. Remove seat from outlet fitting. Discard O-ring and seat. e. Remove burst disc assembly (14) from adapter (15). Remove adapter and O-ring (16) from valve body. Discard O-ring. f. Remove charging valve (17) and O-ring (18) from valve body. Turn valve so that activating mechanism side is facing up. Push down on shaft (19) to disengage from valve body (2). Remove backup ring (20), O-ring (21), and shaft bearing (22). Discard O-rings and backup ring.

n. Lift detent pin and turn pulley counterclockwise until detent pin is aligned with mark on valve top plate. Valve is now armed.

g. Remove gauge protector fitting (23) and O-ring (24) from valve body (2). Discard O-ring.

o. Attach a spring resiliency tester, MIL-T-43560 or equivalent, to valve release assembly (Figure 9-13, 1 thru 3).

h. Clean parts using dry cleaning solvent, MIL-PRF-680, Type III or A-A-59601-3B. Inspect all parts for wear or damage.

p. Pull valve release cable in direction it leaves valve port to discharge reservoir assembly.

i. Replace worn or damaged parts with new or serviceable parts.

q. Measure force required to remove valve release cable from discharge valve assembly. The required force shall be 5 to 14 pounds. Determine cause if inflation system does not meet force requirements.

8.5.5 Reassembly of Discharge Valve Assembly, PN 62314-1. To reassemble discharge valve assembly, PN 62314-1, proceed as follows:

r. To recharge reservoir, refer to Paragraph 8.7.3.

8-24

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Do not apply petroleum based lubricants to Orings used on discharge valve assembly. Petroleum will cause O-rings to deteriorate. a. Ensure that component parts have been cleaned in accordance with Paragraph 8.5.4. b. Apply a light coat of Krytox 240AZ lubricant or equivalent to all O-rings. c. Apply a light coat of McLube 1720L lubricant or equivalent, to all male fitting threads and allow to dry. d. Using O-ring installation tool, TA02612-36, install Oring (Figure 8-8, 24) on gauge protector fitting (23). Install gauge protector fitting (23) into gauge fitting port of valve body (2) and hand tighten. e. Apply a light coat of Krytox 240AZ lubricant or equivalent to shaft bearing (22). Install shaft bearing (22), O-ring (21), and backup ring (20) on shaft (19). Use O-ring installation too, TA02612-35, to install Oring (21) on shaft (19). f. Insert shaft (19) through charging valve port, push and rotate until slotted end engages. g. Apply a light coat of Krytox 240AZ lubricant or equivalent into seat recess of outlet fitting (11). Install seat (12) into recess by pressing it firmly into place with fingers. Using O-ring installation tool, TA0261236, install O-ring (13) on outlet fitting (11). Install outlet fitting (11) into outlet fitting port of valve body (2) and torque to 120 to 144 inlb using a suitable crowfoot wrench and a TQ50A torque wrench. h. Install seat (12) into outlet fitting (11). i. Insert pulley assembly (5), groove pin already installed, into valve body (2). Align groove in pulley assembly with lanyard hole in valve body. j. If previously removed, install a new bearing (4) in cover plate (3). Install cover plate (3) onto pulley assembly (5) and secure with retaining ring (1). k. Insert flow ball (10) through gauge fitting port and engage on tang of shaft (19). Ensure that surface of flow ball (10) is not scratched or damaged.

m. Using O-ring installation tool, TA02612-36, install Oring (7) on small end of bottle fitting (6). Install bottle fitting (6) into bottle fitting port of valve body (2) and torque to 175 to 200 inlb using a suitable crowfoot wrench and a TQ50A torque wrench. n. Check for proper operation of valve components as follows: (1) Rotate pulley assembly (5) using a 3/16 inch allen wrench. There shall be no binding of parts. (2) The outlet fitting port must be closed and the hole in flow ball (10) must be 90 degrees to the outlet fitting (11) when the pulley assembly (5) is in the detent (closed) position. o. Using O-ring installation tool, TA02612-36, install Oring (16) on adapter (15). Install adapter (15) into valve body (2). Install burst disc assembly (14) into adapter (15). Torque burst disc assembly and adapter to 60 ±10 inlb using a suitable crowfoot wrench and a TQ50A torque wrench. p. Using O-ring installation tool, TA02612-36, install Oring (18) on charging valve (17). Install charging valve (17) into charging valve port of valve body (2) and torque to 60 ±10 inlb using a suitable crowfoot wrench and a TQ50A torque wrench. q. Using O-ring installation tool, TA02612-36, install Oring (24) on gauge protector fitting (23). Install gauge protector fitting (23) into gauge fitting port of valve body (2) and torque to 60 ±10 inlb using a suitable crowfoot wrench and a TQ50A torque wrench. r. Apply a light coat of sealing compound PLS No. 2 or equivalent, to threads on pressure gauge (Figure 8-5, 3) and threads of gauge protector fitting (Figure 8-8, 23). Install pressure gauge securely in gauge protector fitting. Torque pressure gauge to 40 to 65 inlb. s. Place gauge protector shell (Figure 8-6, 20) over pressure gauge and gauge protector fitting. Secure in place with retaining ring (19). t. Install hose connection nipple (Figure 8-5, 2). u. Install discharge valve assembly on reservoir in accordance with Paragraph 8.5.3. v. To charge reservoir, Refer to Paragraph 8.7.3.

l. Insert ball guide (9) through bottle fitting port and place against flow ball (10). Place spring (8) in recess of ball guide (9).

8-25

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

SECTION V SERVICING LIFE RAFT CYLINDERS 8.6

Servicing of life raft cylinders consists of the following:

8.7

NOTE

GENERAL.

•

Recharging life raft cylinders.

•

Inflation assembly leakage test.

•

Inflation valve safety-wiring.

•

Marking and stenciling of cylinders.

RECHARGING LIFE RAFT CYLINDERS.

8.7.1 Recharging Cylinder and Valve Assembly to recharge cylinder and valve assembly. To recharge cylinder and valve assembly, proceed as follows:

•

Carbon dioxide used shall conform to BB-C101, Type I or II, Grade B. To provide additional pressure to expel carbon dioxide at lower temperatures, all multiplace carbon dioxide cylinders shall have added dry nitrogen, BB-N411, Type I, Class 1, Grade B.

•

Servicing, inspecting, recharging, testing and overhauling will be accomplished by aircraft environmental system repair personnel or qualified/fully trained personnel at field level.

•

Cylinder and valve assemblies used for ground training purposes do not require use of moisture purifiers when being recharged. Items will be marked: “FOR TRAINING ONLY” as required by Paragraph 1.2.

a. Adjust weighing scale to 0 indication. Prior to recharging cylinders, ensure hydrostatic date meets requirements. Repairable cylinders will be hydrostatically tested prior to being placed in serviceable stock if the test is due within 1 year of recharge date. Refer to Section I. Clamp inflation assembly to work bench using a rubber lined chain vise or other suitable means. For added protection, use of a safety cage as shown in TO 14S1-2-21 may be fabricated.

b. Remove screws and cover plate from valve. (Remove cable assembly if present.)

Extreme care must be taken when handling tools with sharps edges/points to prevent damage to plastic sleeve. c. Use proper size slotted screwdriver when operating valve sheave to open and close valve.

To ensure a minimal amount of moisture input to inflation assemblies, all carbon dioxide shall pass through two purifier assemblies connected in series. See Figure 8-9. The purifier cartridges in each assembly shall be replaced after 250 lbs of carbon dioxide have passed through cartridges. The nitrogen purifier cartridge shall be replaced after every fifth storage cylinder change.

8-26

d. Close inflation valve. e. Clamp inflation assembly to scale weighing pan. Record empty weight. Refer Paragraph 8.10.2.

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 8-9.

Inflation Assembly Recharging Schematic

To prevent burns, personnel recharging carbon dioxide cylinders shall wear leather welder’s gloves with inserts and eye protection. Ensure carbon dioxide and nitrogen storage cylinder valves are turned off and transfer unit is not operating. f. Purge fill-line by opening carbon dioxide storage cylinder valve and slowly open fill-line valve to allow a slight flow of carbon dioxide to pass through line. Close fill-line valve and carbon dioxide storage cylinder valve.

Use caution when closing inflation valve as the carbon dioxide pressure will vent through the valve head when cam is actuated to closed position. j. Open carbon dioxide storage cylinder valve and fillline valve and turn on transfer unit. Fill cylinder until scale indicates weight specified in Table 8-1 (Multiplace life rafts) plus weight recorded in step g. Close inflation valve immediately and shut off transfer unit. k. Close fill-line valve; disconnect fill-line from inflation assembly.

NOTE Do not record weight until scale indicator has stabilized. g. Connect fill-line to inflation assembly and record weight. h. Open inflation valve. i. Open nitrogen storage cylinder valve and fill-line valve. Add nitrogen to cylinder until weight of nitrogen equals weight specified in Table 8-1. Close fill-line valve and nitrogen storage cylinder valve.

l. Measure gross weight. Scale shall indicate weight specified in Table 8-1 plus weight recorded in step g. NOTE If no further recharging is required, ensure power to transfer unit is off, all storage cylinder valves are closed, and pressure is bled from fill-line. m. If gross weight of inflation assembly is greater than weight determined in step 1, open valve and bleed off excess carbon dioxide. If gross weight of inflation assembly is less, repeat steps g, j, k, and l.

8-27

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 Table 8-1.

Raft Type LRU-1/P F-2B 25-Man

Part Number 55C3689-2 55C3689-4 55C3689-11 22D17344 -or22D17341

Required Inflation System Charge

Weight (lb) Weight (lb) Carbon Dioxide Nitrogen 4.32 ±0.06 0.12 ±0.02 9.00 ±0.06 0.20 ±0.01

Combined Charge (wt) Compressed Air Carbon Dioxide Nitrogen (PSIG) 4.44 ±0.08 0 9.20 ±0.07 0

0

0

3100 ±100

3100 ±100

NOTE The 25-Man inflation system may be charged with either Compressed Air or Nitrogen.

8.7.2 Recharging Cylinder When Valve Assembly, PN 9864-05 is Installed. To recharge cylinder when Valve Assembly PN 9864-05 is installed, proceed as follows: Failure to ensure that the cam is in fully closed position could result in inadvertent actuation of inflation assembly, injury to personnel and damage to equipment. n. Route pull cable around valve sheave for required (up or down) pull. See Figure 8-10. o. Record weight of assembly on a suitable tag and attach to cylinder. p. Perform leakage test in accordance with Paragraph 8.8.

Figure 8-10.

8-28

Routing of Multiplace Life Raft Pull Cable

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 c. Remove upper valve body from scale weighing pan.

Prior to recharging cylinders, ensure hydrostatic date meets requirements. Repairable cylinders will be hydrostatically tested prior to being placed in serviceable stock if the test is due within 1 year of recharge data. Refer to Section I. Clamp inflation assembly to work bench using a rubber lined chain vise or other suitable means. For added protection, use of a safety cage as shown in TO 14S1-2-21 may be fabricated.

d. Install four screws (Figure 8-4, 16) in lower body assembly (18). Leave enough clearance under screw heads to accept fill adapter assembly (Figure 3-3).

Ensure that a new or undamaged cartridge disc is installed prior to recharging cylinder. e. Install fill adapter assembly over screw heads. Ensure spline on adapter stem engages mating grooves in cartridge disc (Figure 8-4, 28).

To ensure a minimal amount of moisture input to inflation assemblies, all carbon dioxide shall pass through two purifier assemblies connected in series. See Figure 8-9. The purifier cartridges in each assembly shall be replaced after 250 lbs of carbon dioxide have passed through cartridges. The nitrogen purifier cartridge shall be replaced after every fifth storage cylinder change. NOTE •

Carbon dioxide (CO2) used shall conform to BB-C-101, Type I or II, Grade B. To provide additional pressure to expel carbon dioxide at lower temperatures, all multiplace carbon dioxide cylinders shall have added dry nitrogen, N2, BB-N-411, Type I, Class 1, Grade B.

•

Servicing, inspecting, recharging, testing and overhauling will be accomplished by aircraft environmental system repair personnel or qualified/fully trained personnel at field level.

•

Cylinder and valve assemblies used for ground training purposes do not require use of moisture purifiers when being recharged. Items will be marked: “FOR TRAINING ONLY” as required by Paragraph 1.2.

f. Turn fill adapter assembly clockwise to engage screws, then torque screws to 7 to 9 inlb. g. Turn fill adapter assembly stem counterclockwise until it stops. Fill passageway is now opened.

To prevent burns, personnel recharging carbon dioxide cylinders shall wear leather welder’s gloves with inserts and eye protection. Ensure carbon dioxide and nitrogen storage cylinder valves are turned off and transfer unit is not operating. h. Purge fill-line by opening carbon dioxide storage cylinder valve and slowly open fill-line valve to allow a slight flow of carbon dioxide to pass through line. Close fill-line valve and carbon dioxide storage cylinder valve. i. Connect fill-line to fill adapter assembly and record weight. NOTE Do not record weight until scale indicator has stabilized.

a. Adjust weighing scale to 0 indication. NOTE Upper valve body must be separated from lower valve body to recharge carbon dioxide cylinder. b. Clamp carbon dioxide cylinder with lower valve body attached to scale weighing pan. Place unattached assembled upper valve body, including screws on scale weighing pan. Record empty weight. Do not include end cap diffuser and end cap.

j. Open nitrogen storage cylinder valve and fill-line valve. Turn on transfer unit and add nitrogen to cylinder until weight of nitrogen equals weight specified in Table 8-1. Close fill-line valve. Shut off transfer unit and close nitrogen storage cylinder valve. k. Open carbon dioxide storage cylinder valve and fillline valve and turn on transfer unit. Fill cylinder until

8-29

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 scale indicates weight specified in Table 8-1 plus weight recorded in step i. Turn fill adapter assembly stem clockwise and torque cartridge disc to 39 to 40 FTLB. l. Close fill-line valve; disconnect fill-line from fill adapter assembly.

s. Cylinders that are within 1/100 of a pound of weight obtained in step m are considered serviceable. 8.7.3 Recharging 25-Man Life Raft Inflation Assembly. To recharge 25-Man life raft inflation assembly, proceed as follows:

m. Remove fill adapter assembly and temporarily place assembled upper valve body on scale weighing pan. Measure gross weight. Scale shall indicate weight specified in Table 8-1 plus weight recorded in step b.

Prior to bleeding off excess carbon dioxide, ensure inflation assembly is clamped securely to scale weighing pan.

•

Clamp inflation assembly to work bench using a rubber lined chain vise or other suitable means.

•

Only compressed air or nitrogen shall be used to recharge cylinder of inflation assembly.

a. Loosen nut on filler valve (Figure 8-6, 23) 2¼ turns. b. Connect fill-line to filler valve.

NOTE If no further recharging is required, ensure power to transfer unit is off, all storage cylinder valves are closed, and pressure is bled from fill-line. n. If gross weight of inflation assembly is greater than weight determined in step m, remove upper valve body, reinstall fill adapter assembly, and turn fill adapter assembly stem counterclockwise to bleed off excess carbon dioxide. Turn fill adapter assembly stem clockwise and torque cartridge disc to 39 to 40 FTLB. Repeat step m. o. If gross weight of inflation assembly is less than weight determined in step m, repeat steps d through i and k through m. p. Let assembly stand until external frost disappears and assembly is dry; then reweigh. q. Perform leakage test in accordance with Paragraph 8.8.1.

c. Turn on air compressor or nitrogen cylinder. d. Charge cylinder to specified pressure in Table 8-1. e. Shut off air compressor or nitrogen cylinder. f. Tighten nut on filler valve and disconnect fill-line. g. Record pressure of cylinder on a suitable tag and attach to cylinder. 8.8

INFLATION ASSEMBLY LEAKAGE TEST.

8.8.1 Carbon Dioxide Inflation Assembly. To perform leakage test on carbon dioxide inflation assemblies, proceed as follows: NOTE Ensure tag with recorded weight/pressure is attached to cylinder. a. Submerge inflation assembly in a tank of water. Assembly shall be under constant surveillance for leakage. After 30 minutes, remove assembly from tank.

When the upper valve body is detached from the lower valve body, the spring loaded piercer can be actuated and cause injury to personnel. r. Permanently install upper valve body on lower valve body and torque screws to 12 to 15 inlb.

8-30

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 self or other personnel. Use approved personal protective equipment (goggles/face shield) when using compressed air. Use approved personal protective equipment (goggles/face shield) when using compressed air. Provide protection from flying particles when using compressed air. Do not direct airstream toward self or other personnel. Maximum allowable air pressure for cleaning operations is restricted to less than 30 PSI. b. Remove from tank and dry inflation assembly with compressed air (on multiplace life raft valve assemblies, remove cover plate).

b. Remove from tank and dry cylinder and valve assembly with compressed air. c. Install suitable AN cap on valve outlet fitting. Cap shall be removed when outlet hose (Figure 8-5, 1) is installed. d. After 24 hours, recheck assembly for required charge. NOTE Inflation assemblies meeting above criteria shall be considered serviceable. Assemblies not meeting requirements shall be repaired in accordance with Paragraph 8.3 and Paragraph 8.4.

c. After 24 hours, reweigh assembly. The weight shall be within 1/100 of a pound of weight recorded on attached tag. NOTE Inflation assemblies meeting above criteria shall be considered serviceable. Assemblies not meeting requirements shall be repaired in accordance with Paragraph 8.1, Paragraph 8.2, and Paragraph 8.3. 8.8.2 25-Man Life Raft Inflation Assembly. To perform leakage test on 25-Man life raft inflation assembly, proceed as follows:

When performing valve leak check of 25-Man inflation assembly, do not immerse pressure gauge as water may enter gauge and, in time, render it inoperative. a. Submerge cylinder and valve assembly in tank of water and observe for leakage. No leakage is permissible.

Compressed air used for drying can create airborne particles that may enter eyes. Compressed air shall be moisture and oil free and pressure shall not exceed 30 PSIG. Do not direct airstream towards

8.9

INFLATION VALVE SAFETY-WIRING. NOTE •

Multi-place life raft carbon dioxide valve assemblies require safety-wiring.

•

Prior to installing and safety-wiring cover plate, ensure cover plate is flush against valve body and that there is no gap. Cover plates that do not meet these requirements must be replaced.

8.9.1 Safety-Wiring Valve Assembly PN A128-RDBHD. To safety-wire valve assembly PN A128-RDB-HD, proceed as follows: a. Ensure location of safety-wire holes are as shown in Figure 8-11. b. Using a length of copper wire, QQ-W-343, Size 24, Type S or A-A-59551, route through valve assembly and cover plate as shown in Figure 8-12. Lower cover onto valve assembly. c. Twist safety wire under and around top screw. Install and crimp seal, PN MS51938. See Figure 8-13. d. Secure top and bottom screws in place.

8-31

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 NOTE Prior to installing and safety-wiring cover plate, ensure cover plate is flush against valve body and that there is no gap. Cover plates that do not meet these requirements must be replaced. a. Using a length of copper wire, QQ-W-343, Size 24, Type S or A-A-59551, route through valve assembly and cover plate as shown in Figure 8-14. Lower cover onto valve assembly. Figure 8-11.

Valve Cover Plate

b. Twist safety wire down toward bottom screw; route wire through hole provided in head of screw. Install and crimp seal, PN MS51938. See Figure 8-15.

Figure 8-14.

Figure 8-12.

Installation of Safety Wire

Installation of Safety Wire

Figure 8-15.

Safety-Wired Inflation Valve

8.9.3 Safety-Wiring Valve Assembly PN 9864-05. To safety-wire Valve Assembly PN 9864-05, proceed as follows: a. Using a length of copper wire, QQ-W-343, Type S or A-A-59551, Size 22, route through actuating cam assembly and cover plate as shown in Figure 8-16. Figure 8-13.

Safety-Wired Inflation Valve

8.9.2 Safety-Wiring Valve Assembly Stewart Precision Co. To safety-wire valve assembly manufactured by Stewart Precision Co., proceed as follows: 8-32

b. Verify that actuating cam assembly has not moved from the full counterclockwise position and lower cover assembly onto upper valve body.

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 c. Twist safety wire under and around top screw. Install and crimp seal, PN MS51938. See Figure 8-17. d. Torque top and bottom screws to 7 to 9 inlb. Ensure upper screw does not break safety wire.

Figure 8-17.

Figure 8-16.

8.10

Installation of Safety Wire on Valve Assembly, PN 9864-05

MARKING AND STENCILING OF CYLINDERS.

Paints, primers, lacquers and varnishes must be handled carefully and used only in well-ventilated, approved areas. Avoid prolonged breathing of vapors. Avoid eye and repeated skin contact. Keep away from sparks and flames. 8.10.1 General. All carbon dioxide cylinders shall be painted with either two coats of aircraft gray lacquer, A-A3165 or A-A-2962 or one coat of gray enamel, TT-E-489. All markings shall be in black lettering (½ inch on multiplace life raft cylinders) using black ink, (A-A-208, Type I or III, black) or black lacquer, A-A-3165. 25-Man life raft cylinders shall be painted with black enamel, MIL-E-24306 or MIL-P-24441/23 and a metallic foil or metal nameplate shall be permanently attached. Use Labelizer Industrial Tape B580 (Black on Gray #64881 or equivalent) as a substitute for black ink (A-A-208) and black lacquer (A-A-3165).

Safety-Wire Installed on Valve Assembly, PN 9864-05

8.10.2 Multiplace Life Raft Cylinders. Stencil the following on multiplace life raft cylinders: NOTE •

Empty weight includes complete valve assembly and attachments. DO NOT include the end cap and the cap diffuser.

•

All date recordings shall be indicated as follows: the day, numerically: first three letters of the month and the last two numerals of the year. The following is an example of a properly recorded date on a cylinder processed on the 15th day of January 2002: 15 JAN 02.

Cylinder and valve assy PART NO. WT EMPTY WT CO2 (Enter Nominal Charge) WT CO2 AND N2 (Enter Actual Weight) WT TOTAL DATE OF RECHARGE FLEXIBLE SIPHON TUBE

LB LB LB LB

8-33

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 U.S. PROPERTY 8.10.3

25-Man Life Raft Cylinder (Reservoir).

It is dangerous to use a reservoir of incorrect pressure (type) or temperature (class) rating. NOTE Refer to MIL-R-8573A (ASG) for complete information on referenced cylinder (reservoir). The following information shall be on a metallic foil or metal nameplate on 25-Man life raft cylinders: RESERVOIR, AIR, NONSHATTERABLE STEEL

8-34

SPECIFICATION MIL-R-8573A PSI SERVICE TYPE 1 CLASS SIZE (Manufacturer’s Name or Trademark) SERIAL NO. TEST DATE RESERVOIR PART NO. 2 ASSEMBLY PART NO. 2 MOUNT 3 1 Include type, eg, type 30-40. 2 Use manufacturer’s part numbers. 3 Use term “INVERTED” or “UPRIGHT” as applicable.

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

CHAPTER 9 ILLUSTRATED PARTS BREAKDOWN

SECTION I FOREWORD 9.1

INTRODUCTION.

b. A part common to all assemblies in the same quantity is listed once.

This Illustrated Parts Breakdown (IPB) is designed to assist supply and maintenance personnel in requisitioning, storing, issuing, and identifying parts, and to illustrate assembly and disassembly relationships. It is not intended to be used as an authority for procedures of disassembly or assembly. Maintenance or repair shall be performed by authorized personnel using the applicable maintenance instructions. 9.2

MODELS COVERED.

d. Peculiar parts are listed once and related to the applicable assembly by Usable on Code(s). 9.5

This Illustrated Parts Breakdown describes the parts for the following USAF flotation equipment. Item LRU-1/P Life Raft Assembly F-2B Life Raft Assembly 25-Man Life Raft Assembly LPU-6/P Infant’s Floating Survival Cot LPU-3/P Life Preserver Assembly LPU-10/P Life Preserver Assembly Commercial Life Preserver, Adult/ Child C-141 Silo & Hatch Assembly C-9, C-130, C-135 Transit Case T-43 Cargo Floor Assembly

c. A part common to all assemblies in differing quantities is listed once for each quantity and is related to the applicable assembly by Usable on Code(s).

Part Number 62A82H2-1 63A80H1 22D23574 Type LPU-6/P MIL-L-38484 MIL-L-38484 A-A-50652 1829-014-01 1829-015-01 1829-018-01

9.3 FINDING PART NUMBERS, ILLUSTRATION, DESCRIPTION.

If an illustration consists of more than one sheet, the sheet number follows the index number and is separated by a slash (/). If an indexed item is on more than one sheet of an illustration, the first and last sheet numbers on which the item appears are given. 9.6

9.4

SIMILAR ASSEMBLIES.

Similar assemblies, which contain a majority of identical parts, are combined and listed as shown below. Otherwise, assemblies are listed separately.

USABLE ON CODES.

When two or more assemblies are listed in the same parts list, a code letter (A, B, etc.) is assigned to each main assembly. All subcomponents, peculiar to a particular assembly, are identified by the same code letter as the main assembly. If parts are common to all assemblies covered, the Usable on Code column is left blank. 9.7 SOURCE, MAINTENANCE, AND RECOVERABILITY (SMR) CODES. This manual contains Joint Military SMR codes. Definitions of these codes are available in TO 00-25-195-WA-1. 9.8

Refer to the illustrations at the end of this section for an explanation of how to find a part number or description using the table of contents and illustration titles and how to find the illustration or description if a part number or reference designation is known.

SHEET NUMBER EXPLANATION.

PARTS STANDARDIZATION.

Authority for use of a part number different than the part number listed in the IPB is established by the Department of Defense (DoD) Interchangeability and Substitution (I&S) Program. Refer to the DO43B Master Item Identification Base for Air Force I&S information. The maintenance technician has final responsibility and authority for determining acceptability of substitute parts. Authority for use of a part number different than the part number listed in this IPB shall be approved in writing by the cognizant engineering agency responsible for configuration control.

a. Similar assembly part numbers are listed first, followed by detail parts. 9-1

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 9.9

MANUFACTURER’S LIST.

The following codes are in accordance with H4/H8 Cataloging Handbooks, Commercial and Government Entity (CAGE) Codes. CODE 019L2

04577

04865

06641

08996

18560

30003

58536

62323

70167

72692

77969

80049 80205

9-2

NAME AND ADDRESS Mac Lean-Fogg Company 611 Country Club Road Pocahontas, AR 72455-8803 Carleton Technologies Inc 10 Cobham Drive Orchard Park, NY 14127-4121 Nyltite Corp of America 3451 South Clinton Avenue South Plainfield, NJ 07080-1303 Century Fasteners Corp 5020 Ireland Street Elmhurst, NY 11373-3734 General Pneumatics Corporation 440 Washington Street Orange, NJ 07050-1999 ACR Electronics Inc 5757 Ravenswood Road Fort Lauderdale, FL 33312-6603 Naval Air Systems Command 47123 Buse Road Suite IPT Patuxent River, MD 20670-1547 Federal Commercial Item Description Promulgated by General Services Administration Washington DC Conax Florida Corporation 2801 75th Street North Saint Petersburg, FL 33710-2936 Air Cruisers Company LLC 1747 State Route 34 Wall Township, NJ 07727-3935 General Filters Inc 43800 Grand Ave Novi, MI 48376 Rubbercraft Corporation of California LTD 15627 S Broadway Street Gardena, CA 90248-2210 Department of the Air Force Washington, DC 20330 National Aerospace Standards Committee Aerospace Industries Association of America Inc

CODE 81349

87286

88044

9Z842

96906

97375

98021

98313

99251

9.10

NAME AND ADDRESS Military Specifications Promulgated by Military Departments/Agencies Under Authority of Defense Standardization Manual 4120 3-M Sparklet Devices Inc 4400 Gustine Avenue Saint Louis, MO 63116-3418 Aeronautical Standards Group Department of Navy and Air Force United States Mirick Industries Inc 8630 Regency Drive Tulsa, OK 74131-3625 Military Standards Promulgated By Military Departments Under Authority of Defense Standardization Manual 4120 3-M Air-Lock Inc 108 Gulf Street Milford, CT 06460-4859 Halkey-Roberts Corporation 2700 Halkey Roberts Place N Saint Petersburg, FL 33716-4103 Davis Aircraft Products Company Inc 1150 Walnut Avenue Bohemia, NY 11716-2168 Carleton Life Support Systems Inc DBA Cobham Mission System 2734 Hickory Grove Road Davenport, IA 52804-1203

MAINTENANCE PARTS LIST (MPL).

The MPL is divided into figures by main equipment groups and/or assemblies. Each group or assembly is keyed to a related illustration by figure and index number. They are then broken down into assemblies, modules, and detailed parts. The relation of each part to its next higher assembly (NHA) and/or group is shown either by indentation or by figure cross-reference notes. The MPL is divided into columns as described below. 9.10.1 Figure and Index Number Column. This column provides the figure and index numbers used to key a part or assembly listed in the MPL to its location in an illustration. The figure number precedes the first index number in each listing and the first index number on each page of a multipage listing. Index numbers are listed in sequence. When an assembly or part has not been assigned an index number, the

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 figure and index number of the preceding part in the MPL is used with the letter F before the figure number, such as F7-6. The F means following. 9.10.2 Part Number Column. Part numbers, including dash numbers, are assigned to each listed part in accordance with current industry engineering practices. Appropriate numbers for types, models, specifications, specification control drawings, and source control drawings follow the nomenclature in the description column. If a drawing number is different from the part number (excluding dash differences), the drawing number follows the description. If a part is authorized for local manufacture, and a specific drawing is required, that drawing number follows the description. If only a model or type number identifies a component, that number is used in lieu of a part number. 9.10.2.1 Commercial Hardware. The letters COML in the part number column indicate commercial hardware procurable from normal commercial sources. 9.10.2.2 Parts Not Illustrated. Parts which are indexed in the MPL, but not shown on the illustration, have a dash (-) preceding the index number. 9.10.2.3 Markings. Decalcomanias, metalcals, vinyl film markings, etc., are considered parts. The identifying drawing number for each marking appears in the part number column. An asterisk (*) means the marking is to be requisitioned according to requirements of DODI 5330.03_AFI 33395. 9.10.2.4 Government Furnished Equipment (GFE) and Contractor Furnished Equipment (CFE) Covered by Separate Manuals. A number symbol (#) following a part number means that detail parts are listed in a separate manual. Refer to the List of Related Publications. 9.10.3 CAGE Column. Refer to the Manufacturer’s List for CAGE codes and manufacturers information applicable to this manual. Further explanations of CAGE codes are contained in CAGE Cataloging Handbook H4/H8 and amendments thereto. 9.10.4 Description Column. The description column contains indenture, nomenclature and cross-reference information. The identifying noun is given first. Sizes, dimensions, materials, and tolerances are then indicated. If applicable, the appropriate numbers for types, models, specifications, specification control drawings and source control drawings follow the nomenclature. When the drawing number for a part is different than the part number (excluding dash differences), the drawing number follows the description. When a part is authorized for local manufacture, and a specific drawing is required, the drawing number follows the description. References to other illustrations for information on detail parts or information on NHAs are given. Attaching parts are identified by the abbreviation (AP) following the description.

9.10.4.1 Indentation. Parts listed in the MPL are indented to indicate item relationship or NHA. Nomenclature of each assembly is followed in the list (except for attaching parts) by nomenclature of its component indented one column to the right. This indentation indicates relationship of component to assembly. To determine NHA of a part or assembly, note column in which the first word of nomenclature appears. First item directly above, which appears one column to the left (except for attaching parts), is NHA. Description 1234567 END ITEM, COMPONENT, MAJOR ASSEMBLY DETAIL PARTS FOR END ITEM, COMPO. NENT, MAJOR ASSEMBLY . ASSEMBLY . Attaching parts for assembly (AP) Detail parts for assembly .. . . Subassemblies . . Attaching parts for subassemblies (AP) . . . Detail parts for subassemblies . . . Sub-subassemblies . . . Attaching parts for sub-subassemblies (AP) . . . . Detail parts for sub-subassemblies 9.10.5 Units Per Assembly Column. Quantities shown in this column represent units required for each detail part in an assembly, each assembly in the NHA, and each attaching part to attach one unit or one assembly. The abbreviation AR (as required) is used when quantity required must be determined when parts are installed. The abbreviation REF (reference) indicates that item has been previously listed under its NHA. The SEE FIGURE notation in the item description indicates figure and index numbers at which units per assembly can be determined. 9.10.6 Usable on Code Column. These codes indicate the configuration of the end items to which listed assemblies and parts apply. No code is shown in this column if a part applies to all configurations. 9.10.7 Source, Maintenance, and Recoverability (SMR) Code Column. This column contains the five-digit Joint Military Services Uniform SMR codes. For complete information about SMR codes, refer to TO 00-25-195-WA-1. 9.11

NUMERICAL INDEX (NI).

If applicable, an NI is provided which contains an alphanumerical listing of all drawings and parts listed in the MPL (including model and type numbers for components not assigned part numbers). 9.11.1 Part Number Column. Part numbers begin at the extreme left and continue from left to right, one position at a time. For the first character of the part number, the letters A

9-3

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 through N and P through Z take precedence over the numerals, 0 through 9 (alphabetic Os are considered numeric zeros). For the second and succeeding characters of a part number, precedence is as follows: (1) diagonal, (2) period, (3) dash, (4) letters A through N and P through Z, and (5) numerals 0 through 9. 9.11.2 Figure and Index Number Column. This column contains the figure and index numbers for all parts listed. If an assembly or part is not indexed, the figure and index number of the preceding part in the MPL is used with the letter F in front of the figure number. The letter F means follows. 9.12

REFERENCE DESIGNATION.

If applicable, reference designators may be shown on the applicable illustrations or contained in a Reference Designa-

9-4

tor Index (RDI). The RDI contains a listing of the reference designations that have been assigned to parts listed in the MPL. Not all parts in the MPL will have an associated reference designation. Columns in the RDI are explained below. 9.12.1 Reference Designator Column. This column contains all applicable reference designators which are arranged in alphanumeric sequence. 9.12.2 Figure and Index Number Column. This column lists the figure and index numbers applicable to all reference designations. An F before the figure number means an assembly or part has a reference designator, but not an index number, and the figure/index number of the preceding part in the MPL has been used. The F means follows.

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

9-5

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

9-6

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

SECTION II MAINTENANCE PARTS LIST

Figure 9-1. FIGURE & INDEX/ SHEET NO. 9-11 2

PART NUMBER 62A82H2-1 63A120H1-30 55C3689-2

LRU-1/P Life Raft Assembly DESCRIPTION

CAGE

1234567

30003 30003 80049

LRU-1/P LIFE RAFT (MIL-L-5567-35) . . . . . . . . . . MANIFOLD . . . . . . . . . . . . . . . . . . . . . . . . . . . . CYLINDER AND VALVE ASSEMBLY (see Fig- . . . ure 9-3 for breakdown)

UNITS PER ASSY REF 1 1

USABLE ON CODE

SMR CODE PFFFF PAFZZ AAFFF

9-7

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 9-2. FIGURE & INDEX/ SHEET NO. 9-21

2

9-8

PART NUMBER

F-2B Life Raft Assembly UNITS PER ASSY

DESCRIPTION CAGE

1234567

63A80H1 9153

30003 97375

C-50980

30003

55C3689-4

80049

55C3689-11

80049

F-2B LIFE RAFT ASSEMBLY . . . . . . . . . . . . MANIFOLD, Vent (see Figure 9-5 for break- . . down) MANIFOLD, Vent (see Figure 9-6 for break- . . down) CYLINDER AND VALVE ASSEMBLY (see Figure 9-3 for breakdown) CYLINDER AND VALVE ASSEMBLY (see Figure 9-3 for breakdown)

USABLE ON CODE

SMR CODE

... ...

REF 1

PFFFF PAFFF

...

1

PAFFF

...

1

AAFFF

...

1

AAFFF

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 9-3.

(9-9 blank)/9-10

Cylinder and Valve Assembly, PN 55C3689 (KM)

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 FIGURE & INDEX/ SHEET NO.

PART NUMBER

CAGE

1234567

55C3689 55C3689-2

80049 80049

55C3689-4

80049

55C3689-11

80049

1

MS26545B2C0415

96906

MS26545B2C0205A A-128-14B-4

96906

2

CYLINDER AND VALVE ASSEMBLY . . . . . . . CYLINDER AND VALVE ASSEMBLY (see Figure 9-1 for NHA) CYLINDER AND VALVE ASSEMBLY (see Figure 9-2 for NHA) CYLINDER AND VALVE (see Figure 9-2 for . . NHA) . CYLINDER (use with 55C3689-4 and . . . . . . 55C3689-11) . CYLINDER (use with 55C3689-2) . . . . . . . . . TUBE ASSEMBLY, Siphon (use with . . . . . . . 55C3689-2) . TUBE ASSEMBLY, Siphon (use with . . . . . . . 55C3689-4 and 55C3689-11) . TUBE ASSEMBLY, Siphon (use with . . . . . . . 55C3689-11and 55C3689-4) . VALVE ASSEMBLY, Life raft (see Figure 9-3 . for breakdown) (use with 55C3689-11) . VALVE ASSEMBLY, (MIL-I-18369) (use with . 55C3689-4) . . WASHER, 5/8 in ID X 1.00 in OD th 0.062. . (K) . . POPPET ASSEMBLY (K) . . . . . . . . . . . . . . . . CABLE ASSEMBLY (KMA128-RD11) . . . . . . . HOUSING, Cabling (use PN 68A until ex- . . hausted) . . HOUSING, Pull Cable . . . . . . . . . . . . . . . . . . PLATE, Cover . . . . . . . . . . . . . . . . . . . . . . . SCREW, Cover, No. 6 X ¼ truss (AP) . . . . . . . WASHER, Lock, No. 6 (AP) . . . . . . . . . . . . . . WIRE, Sealing (QQ-W-343, type S, size 24 . or A-A-59551) . . SEAL, Sealing wire (MS18018) . . . . . . . . . . . SEAL, Sealing wire . . . . . . . . . . . . . . . . . . . . SHEAVE . . . . . . . . . . . . . . . . . . . . . . . . . . . SCREW, Sheave, No. 8-32 X ¼ Truss (AP) . . . CAM ASSEMBLY . . . . . . . . . . . . . . . . . . . . . CAM FOLLOWER ASSEMBLY . . . . . . . . . . . . SCREW, Cam arm pivot (also available in . . Repair Kit ASV710) (AP) . . SPRING, Cam follower (also available in . . . Repair Kit ASV710) (AP) . . PLUG, Safety outlet . . . . . . . . . . . . . . . . . . . INSERT, Safety outlet (also available in Repair Kit ASV710) . . DISC, Safety outlet (also available in Repair Kit ASV710) . . GASKET, Safety outlet (also available in . . . Repair Kit ASV710) . . SCREW, Set . . . . . . . . . . . . . . . . . . . . . . . . PLUG ASSEMBLY . . . . . . . . . . . . . . . . . . . . PIN, Grooved . . . . . . . . . . . . . . . . . . . . . . . . DEFLECTOR . . . . . . . . . . . . . . . . . . . . . . . . BODY . . . . . . . . . . . . . . . . . . . . . . . . . . . REPAIR KIT . . . . . . . . . . . . . . . . . . . . . . . . .

9-3-

A-128-14B-8 A-128-14B-2203 9864-05

62323

A-128-RDB-HD

87286

3

A-128-13

4 5 6

ASV-601 8140709 1106AS102

7 8 9 10 11

1106AS102-1 A-128-91-HD 17-S-V1 AN936A6B A110-21

UNITS PER ASSY

USABLE ON CODE

SMR CODE

... ...

REF REF

A

PAFFF

...

REF

B

AAFFF

...

REF

C

XB

...

1

B,C

PAFFF

... ...

1 1

A A

PAFFF PAFZZ

...

1

B,C

PAFZZ

...

1

B,C

PAFZZ

C

PAFFF

B

PAFFF

DESCRIPTION

30003 =

30003 80049 80049 88044

12 13 14 15 16

3-SV-1 MS51938-6 A-128-92 AN526C632-5 A-128-6A ASV-701 A-128-4

17

A-128-5

80049

18 19

A-110-17 A-110-16

80049 80049

20

A-110-28

80049

21

A-110-19

80049

22 23 24 25 26

19-SV-2 A-128-3B 46-PV-2 A-128-12 A-128-1 ASV710

80049 80049 80049 80049

=

96906 88044 80049 80049 80049

87286

CODES A B C

... ...

1

...

1

PAFZZ

... ... ...

1 1 1

PAFZZ PAFZZ PAFZZ

. . . . .

. . . . .

. . . . .

1 1 2 2 1

. . . . . . .

. . . . . . .

. . . . . . .

1 1 1 1 1 1 1

PAFZZ

...

1

PAFZZ

... ...

1 1

PAFZZ

...

1

PAFZZ

...

1

PAFZZ

. . . . . .

1 1 1 1 1 1

XA PAFZZ

. . . . . .

. . . . . .

PAFZZ

USABLE ON Used on 55C3689-2 Used on 55C3689-4 Used on 55C3689-11

9-11

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 9-4.

9-12

Valve Assembly PN 9864-05

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 FIGURE & INDEX/ SHEET NO.

PART NUMBER

CAGE

1234567

9864-05 23803-2 MS51957-26 23793 23798 MS51938-6 24590

97375 97375 96906 97375 97375 96906 97375

7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33

24583-1 CF3600 AN565BC4H2 23794 23818 23819 24577 23801 23802-2 23775 23787 MS16555-601 24580 23795 CP4-9 AN565BC4H2 23796 23780 23782 23781 24915-1 NAS1352N08-10 24386 23909 24026 23878 6022-1

97375 06641 88044 97375 97375 97375 97375 97375 97375 97375 97375 96906 97375 97375 88044 97375 97375 97375 97375 97375 80205 97375 97375 97375 97375 9Z842 99251

34 35 36 37 38 39

23821 24147 24587-1 24586 24585 6014-5

97375 97375 97375 97375 9Z842 9Z842

40

6122-5

97375

41 42

1468 1519

97375 97375

43

23632

96906

44 45 46 47 48 49

MS18068-3 7072 8000 23820 24385 1472

97375 97375 97375 97375 97375 97375

50

24148 9968

97375 97375

VALVE ASSEMBLY, Life raft . . . . . . . . . . . . . . COVER ASSEMBLY . . . . . . . . . . . . . . . . . . . SCREW (AP) . . . . . . . . . . . . . . . . . . . . . . . . . WINDOW . . . . . . . . . . . . . . . . . . . . . . . . . . . COVER . . . . . . . . . . . . . . . . . . . . . . . . . . . SEAL, Antipilferage . . . . . . . . . . . . . . . . . . . . WIRE, Safety (QQ-W-343, Type S, size 22 or A-A-59551 . ACTUATING CAM ASSEMBLY . . . . . . . . . . . SCREW, 1-Way slot (AP) . . . . . . . . . . . . . . . SCREW . . . . . . . . . . . . . . . . . . . . . . . . . . . . TUBING ASSEMBLY . . . . . . . . . . . . . . . . . . . . ADAPTER . . . . . . . . . . . . . . . . . . . . . . . . . . END CAP . . . . . . . . . . . . . . . . . . . . . . . . . . TUBE, Flexible . . . . . . . . . . . . . . . . . . . . . . CABLE ASSEMBLY . . . . . . . . . . . . . . . . . . . ARM ASSEMBLY, Actuator . . . . . . . . . . . . . . SCREW, Pivot (AP) . . . . . . . . . . . . . . . . . . . . ROLLER . . . . . . . . . . . . . . . . . . . . . . . . . . . PIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ARM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SPRING, Torsion . . . . . . . . . . . . . . . . . . . . . PIN, Grooved . . . . . . . . . . . . . . . . . . . . . . . . SCREW . . . . . . . . . . . . . . . . . . . . . . . . . . . . PLUG ASSEMBLY . . . . . . . . . . . . . . . . . . . . . PLUG, Lanyard port . . . . . . . . . . . . . . . . . . . PLUG EXTENSION, Lanyard port . . . . . . . . . WASHER, Lanyard plug . . . . . . . . . . . . . . . LOWER HOUSING SUBASSEMBLY . . . . . . . SCREW (AP) . . . . . . . . . . . . . . . . . . . . . . . . . FITTING, Diffuser safety port . . . . . . . . . . . . . DISC, Rupture . . . . . . . . . . . . . . . . . . . . . . . WASHER, Safety port . . . . . . . . . . . . . . . . . . CARTRIDGE, Disc . . . . . . . . . . . . . . . . . . . . O-RING (also available in Repair Kit . . . . . . ASV710) . . WASHER, Copper . . . . . . . . . . . . . . . . . . . . VALVE BODY, Lower . . . . . . . . . . . . . . . . . . PLUNGER ASSEMBLY . . . . . . . . . . . . . . . . . . CYLINDER . . . . . . . . . . . . . . . . . . . . . . . . . STEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . O-RING (also available in Repair Kit . . . . . . . ASV710) . O-RING (also available in Repair Kit . . . . . . . ASV710) . SLEEVE, Vent manifold . . . . . . . . . . . . . . . . . VALVE, Vent manifold (also available in Re- . pair Kit ASV710) . SPRING, Compression (also available in Repair Kit ASV710) . SCREW . . . . . . . . . . . . . . . . . . . . . . . . . . . . SPRING . . . . . . . . . . . . . . . . . . . . . . . . . . . BALL, 1/8 inch Diameter . . . . . . . . . . . . . . . . END CAP DIFFUSER . . . . . . . . . . . . . . . . . . END CAP . . . . . . . . . . . . . . . . . . . . . . . . . . GASKET (also available in Repair Kit . . . . . . ASV710) . VALVE BODY, Upper . . . . . . . . . . . . . . . . . PARTS KIT . . . . . . . . . . . . . . . . . . . . . . . . .

9-41 2 3 4 5 6

UNITS PER ASSY

DESCRIPTION

USABLE ON CODE

SMR CODE

. . . . . . .

. . . . . . .

. . . . . . .

1 1 2 1 1 1 1

. . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . .

1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 4 1 1 1 1 1

. . . . . .

. . . . . .

. . . . . .

1 1 1 1 1 2

PAFZZ

...

1

PAFZZ

... ...

2 2

PAFZZ

...

2

PAFZZ

. . . . . .

. . . . . .

1 1 1 1 1 2

PAFZZ

... ...

1 1

. . . . . .

PAFFF

PAFZZ

9-13

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 9-5. FIGURE & INDEX/ SHEET NO. 9-5-

9-14

PART NUMBER 9153

Vent Manifold UNITS PER ASSY

DESCRIPTION CAGE

1234567

97375

VENT MANIFOLD (Repair kit available) (see . Figure 9-2 for NHA) . CAP, Moisture . . . . . . . . . . . . . . . . . . . . . . . SCREWS, Adjustment . . . . . . . . . . . . . . . . . . CAP, Brass . . . . . . . . . . . . . . . . . . . . . . . . . PLUNGER, Brass . . . . . . . . . . . . . . . . . . . . . O-RING, On cap (also available in Repair Kit ASV710) . VALVE, With bonded seal (also available in . . Repair Kit ASV710) . . SPRING, Valve (also available in Repair Kit ASV710) . PACKING, Preformed, on body (also avail- . . able in Repair Kit ASV710) . GASKET, Outlet ports (also available in Re- . pair Kit ASV710) . GASKET, Carbon dioxide inlet (also available in Repair Kit ASV710) . HOUSING, Red brass . . . . . . . . . . . . . . . . . . ADAPTER, Test . . . . . . . . . . . . . . . . . . . . . REPAIR KIT . . . . . . . . . . . . . . . . . . . . . . . . .

1 2 3 4 5

2066 LM73CR832-4E 2045 2046 6077

6

1519

7

7051

8

6075

9

1472

10

1475

97375

11 12

1466 9141 762

97375

97375

97375

USABLE ON CODE

SMR CODE

...

1

PAFFF

. . . . .

. . . . .

1 3 1 1 1

PAFZZ

...

2

PAFZZ

...

2

PAFZZ

...

1

PAFZZ

...

2

PAFZZ

...

1

PAFZZ

... ... ...

1 1 1

MFF KF

. . . . .

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 9-6. FIGURE & INDEX/ SHEET NO. 9-6-

PART NUMBER C-50980 1106AS115

=

Vent Assembly

DESCRIPTION CAGE

1234567

UNITS PER ASSY

30003 30003

VENT ASSEMBLY (see Figure 9-2 for NHA . . . . . VENT ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . .

1 1

USABLE ON CODE

SMR CODE PAFFF

9-15

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 9-7. FIGURE & INDEX/ SHEET NO. 9-7-

-1

2

9-16

25-Man Crew Life Raft/Survival Kit

PART NUMBER

CAGE

1234567

22D23592-1 22D23592-103 22D23572-1 22D23572-103 22D23594-1

70167 70167 70167 70167 70167

60054-101

70167

22D23576-1

70167

60053-101

70167

22D23583-1

70167

LIFE RAFT/SURVIVAL KIT, Crew, 25-Man . . . . LIFE RAFT/SURVIVAL KIT, Crew, 25-Man . . . . LIFE RAFT/SURVIVAL KIT, Troop, 25-Man . . . . LIFE RAFT/SURVIVAL KIT, Troop, 25-Man . . . . KIT, Survival, Life raft, crew (use with . . . . . . . . 22D23592-1) KIT, Survival, Life raft, crew (supersedes . . . . . 22D23594-103 for S/N 0794 and sub) (use with 22D23592-103) KIT, Survival, Life raft, troop (use with . . . . . . . 22D23572-1) KIT, Survival, Life raft, troop (supersedes . . . . . 22D23576-103 for S/N 0794 and sub) (use with 22D23572-103) CONTAINER ASSEMBLY, Survival equipment, . crew (use with 22D23592-1)

UNITS PER ASSY

USABLE ON CODE

SMR CODE

REF REF REF REF 1

A B C D A

AFF

..

1

B

AFF

..

1

C

AFF

..

1

D

PAFFF

..

1

A

PAFFF

DESCRIPTION . . . . .

. . . . .

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 FIGURE & INDEX/ SHEET NO. 9-7-

3

4

5

PART NUMBER

CAGE

1234567

22D23583-103

70167

22D23583-2

70167

22D23583-105

70167

22D23593-1

70167

22D23593-103

70167

22D23573-1

70167

22D23573-103

70167

22C23588-1

70167

22C23588-2

70167

22D23574-1

70167

22D23574-103

70167

22D23574-2

70167

22D23574-105

70167

CONTAINER ASSEMBLY, Survival equipment, . crew (use with 22D23592-103) CONTAINER ASSEMBLY, Survival equipment, . troop (use with 22D23572-1) CONTAINER ASSEMBLY, Survival equipment, . troop (use with 22D23572-103) CASE, Life raft/survival kit, 25-Man life raft . . . . crew (see Figure 9-14 for breakdown) (use with 22D23592-1) CASE, Life raft/survival kit, 25-Man life raft, . . . crew (see Figure 9-14 for breakdown) (use with 22D23592-103) CASE, Life raft/survival kit, 25-Man life raft, . . . troop (see Figure 9-15 for breakdown) (use with 22D23572-1) CASE, Life raft/survival kit, 25-Man life raft, . . . troop (see Figure 9-15 for breakdown) (use with 22D23572-103) LANYARD ASSEMBLY, 25-Man life raft (see . . . Figure 9-13 for breakdown) (use with 22D23592-1 and 22D23592-103) LANYARD ASSEMBLY, 25-Man life raft (see . . . Figure 9-13 for breakdown) (use with 22D23572-1 and 22D23572-103) LIFE RAFT, Dual gas aspirated, 25-Man crew . . (see Figure 9-8 for breakdown) (use with 22D23592-1) LIFE RAFT, Dual gas aspirated, 25-Man crew . . (see Figure 9-8 for breakdown) (use with 22D23592-103) LIFE RAFT, Dual gas aspirated, 25-Man troop . (see Figure 9-8 for breakdown) (use with 22D23572-1) LIFE RAFT, Dual gas aspirated, 25-Man troop . (see Figure 9-8 for breakdown) (use with 22D23572-103)

UNITS PER ASSY

USABLE ON CODE

SMR CODE

..

1

B

PAFFF

..

1

C

PAFFF

..

1

D

PAFFF

..

1

A

PAFFF

..

1

B

PAFFF

..

1

C

PAFDD

..

1

D

PAFFF

..

1

A,B

PAFFF

..

1

C,D

PAFFF

..

1

A

AFO

..

1

B

AFO

..

1

C

AFO

..

1

D

AFO

DESCRIPTION

CODES A B C D

USABLE ON Used on 22D23592-1 Used on 22D23592-103 Used on 22D23572-1 Used on 22D23572-103

9-17

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 9-8. FIGURE & INDEX/ SHEET NO.

DESCRIPTION CAGE

1234567

22D23574-1

70167

22D23574-103

70167

22D23574-2

70167

22D23574-105

70167

22D23575-1 22D23585-103

70167 70167

22D23585-105

70167

22D17344-1

70167

22D17341-1

70167

4 5 6

16C13303-1 12C11486-0 20B19171-80

70167 70167 70167

7 8

22C73656-1 62362-103

70167 70167

LIFE RAFT, Dual gas aspirated, 25-Man crew . . . . (see Figure 9-7, 5 for NHA) LIFE RAFT, Dual gas aspirated, 25-Man crew . . . . (see Figure 9-7, 5 for NHA) LIFE RAFT, Dual gas aspirated, 25-Man crew . . . . (see Figure 9-7, 5 for NHA) LIFE RAFT, Dual gas aspirated, 25-Man troop . . . (see Figure 9-7, 5 for NHA) . CANOPY ASSEMBLY, Manually erected . . . . . . . . LIFE RAFT ASSEMBLY, 25-Man crew (super- . . . sedes 22D23585-1) (use with 22D23574-1 and 22D23574-103) . LIFE RAFT ASSEMBLY, 25-Man troop (su- . . . . . persedes 22D23585-2) (use with 22D23574-2 and 22D23574-105) . . RESERVOIR ASSEMBLY, Gas, crew raft . . . . . (see Figure 9-9 for breakdown) (use with 22D23574-1 and 22D23574-103) . . RESERVOIR ASSEMBLY, Gas, troop raft . . . . . (see Figure 9-9 for breakdown) (use with 22D23574-2 and 22D23574-105) . . COVER, Cylinder . . . . . . . . . . . . . . . . . . . . . . . . ANCHOR, Sea . . . . . . . . . . . . . . . . . . . . . . . . . . LIGHT AND BATTERY ASSEMBLY, Water . . . . . activated . . HEAVING RING AND LINE ASSEMBLY . . . . . . . . PUMP ASSEMBLY, Positive closing jet (su- . . . . persedes 18D17233-0) (see Figure 9-12 for breakdown)

9-8-

1 2

3

9-18

PART NUMBER

25-Man Crew, Dual Gas Aspirated Life Raft UNITS PER ASSY

USABLE ON CODE

SMR CODE

REF

A

AFO

REF

B

AFO

REF

C

AFO

REF

D

AFO

1 1

A,B,C,D A,B

PAFFF PFFFF

1

C,D

PFFFF

2

A,B

2

C,D

1 1 2

PAFFF PAFZZ

2 2

PAFZZ PAFFF

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 FIGURE & INDEX/ SHEET NO. 9-8-

PART NUMBER 18D17233-0

9

13C13028-10

DESCRIPTION =

CAGE

1234567

70167

. . PUMP ASSEMBLY, Positive closing jet (see . . . Figure 9-12 for breakdown) . . KNIFE ASSEMBLY . . . . . . . . . . . . . . . . . . . . .

70167

CODES A B C D

UNITS PER ASSY 2

USABLE ON CODE

SMR CODE PAFFF

2

USABLE ON Used on 22D23574-1 Used on 22D23574-103 Used on 22D23574-2 Used on 22D23574-105

9-19

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 9-9. FIGURE & INDEX/ SHEET NO.

PART NUMBER

Crew Life Raft Gas Reservoir Assembly

DESCRIPTION CAGE

1234567

22D17344-1

70167

22D17341-1

70167

17B17205-9 22C17345-1

70167 70167

22C17342-1

70167

AN929-4 AN816-4J B19662-1 1051-0001-221 18C18170-1 B14056-907 62314-1

88044 88044 70167 04577 70167 70167 70167

18D18167-1

70167

10 11

B19165-1 B14056-916

70167 70167

12

22C17346-1

70167

22C17343-1

70167

RESERVOIR ASSEMBLY, Gas, crew life raft . . . . . (see Figure 9-8, 3 for NHA) RESERVOIR ASSEMBLY, Gas, troop life raft . . . . (see Figure 9-8, 3 for NHA) . HOSE ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . CYLINDER AND VALVE ASSEMBLY, 25-Man . . . life raft, crew (use with 22D17344-1) . CYLINDER AND VALVE ASSEMBLY, 25-Man . . . life raft, troop (use with 22D17341-1) . . CAP ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . NIPPLE (Supersedes AN816-45) . . . . . . . . . . . . . PROTECTOR, Gauge . . . . . . . . . . . . . . . . . . . . . RING, Retaining . . . . . . . . . . . . . . . . . . . . . . . . . GAUGE, Pressure . . . . . . . . . . . . . . . . . . . . . . . . PACKING, Preformed . . . . . . . . . . . . . . . . . . . . . VALVE ASSEMBLY (Supersedes . . . . . . . . . . . 18D18167-1) (see Figure 9-11 for breakdown) . . VALVE ASSEMBLY, Universal (see Figure . . . . . 9-10 for breakdown) . . TUBE, Syphon . . . . . . . . . . . . . . . . . . . . . . . . . . PACKING, Preformed (supersedes . . . . . . . . . . 23D14053-9) . . CYLINDER ASSEMBLY, Gas, crew raft (use . . . with 22D17344-1) . . CYLINDER ASSEMBLY, Gas, troop raft . . . . . . (use with 22D17341-1)

9-9-

1 -2

3 4 5 6 7 8 9

CODES A B

9-20

USABLE ON Used on 22D17344-1 Used on 22D17341-1

UNITS PER ASSY

USABLE ON CODE

SMR CODE

REF

A

AFF

REF

B

AFF

1 2

A

PAFZZ PAFDD

1

B

PAFDD

1 1 1 1 1 1 1

PAFZZ

PAFZZ PAFFF

1

PAFFF

1 1

PAFZZ

1

A

PAFDD

1

B

PAFDD

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 9-10. FIGURE & INDEX/ SHEET NO.

PART NUMBER

Universal Valve Assembly

CAGE

1234567

18D18167-1

08996

1 2 3 4 5 6 7 8 9

19D17238-18 19D17238-26 19D17238-4 19D17238-3 19C17238-25 19C17238-6 19D17238-27 19D17238-14 B14056-907

70167 70167 70167 70167 70167 70167 70167 70167 70167

10 11 12

19D17238-11 19D17238-8 B14056-907

70167 70167 70167

13 14 15 16 17

19D17238-24 19D17238-5 17A18107 19D17238-61 B14056-907

70167 70167 70167 70167 70167

18

17B18110

70167

VALVE ASSEMBLY, Universal (504GPS-2) . . . . . (see Figure 9-9, 9 for NHA) . RING, Retaining . . . . . . . . . . . . . . . . . . . . . . . . BEARING, Nylon . . . . . . . . . . . . . . . . . . . . . . . PLATE, Top . . . . . . . . . . . . . . . . . . . . . . . . . . . PULLEY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SPRING, Compression . . . . . . . . . . . . . . . . . . . PIN, Detent stop . . . . . . . . . . . . . . . . . . . . . . . . PIN, Spring . . . . . . . . . . . . . . . . . . . . . . . . . . . VALVE, Relief . . . . . . . . . . . . . . . . . . . . . . . . . . PACKING, Preformed (also available in Re- . . . pair Kit ASV710) . TUBE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . FITTING, Bottle, alternate 19D17238-62 . . . . . . . PACKING, Preformed (also available in Re- . . . pair Kit ASV710) . SPRING, Compression . . . . . . . . . . . . . . . . . . . BALL, Guide . . . . . . . . . . . . . . . . . . . . . . . . . . BALL, Flow . . . . . . . . . . . . . . . . . . . . . . . . . . . FITTING, Outlet . . . . . . . . . . . . . . . . . . . . . . . . PACKING, Preformed (when exhausted use . . . PN GP1913907) (also available in Repair Kit ASV710) . SEAT, Flow ball (when exhausted use PN . . . . . GP1TT010)

9-10-

UNITS PER ASSY

DESCRIPTION

USABLE ON CODE

SMR CODE

.

REF

PAFFF

. . . . . . . . .

1 1 1 1 1 1 1 1 1

PAFZZ

. . .

1 1 1

PAFZZ

. . . . .

1 1 1 1 1

PAFZZ

.

1

PAFZZ

Change 1

9-21

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 FIGURE & INDEX/ SHEET NO. 9-10-

9-22

PART NUMBER

CAGE

1234567 . RING, Retainer . . . . . . . . . . . . . . . . . . . . . . . . . SHELL, Gauge protecting . . . . . . . . . . . . . . . . . FITTING, Gauge protector . . . . . . . . . . . . . . . . . PACKING, Preformed (also available in Re- . . . pair Kit ASV710) . VALVE, Filler (when exhausted use PN . . . . . . . MS28889-2) . PACKING, Preformed (also available in Re- . . . pair Kit ASV710) . SHAFT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . BEARING, Shaft . . . . . . . . . . . . . . . . . . . . . . . . PACKING, Preformed (when exhausted use . . . PN GP17B07S) (also available in Repair Kit ASV710) . RING, Back-up (KF) (when exhausted use . . . . PN GP1BT006) (also available in Repair Kit ASV710) . BODY, Valve . . . . . . . . . . . . . . . . . . . . . . . . . KIT, Repair (when exhausted use PN . . . . . . . . . GP504S0049)

19 20 21 22

19D17238-19 19D12238-10 19D17238-9 B14056-907

70167 70167 70167 70167

23

22B15058

70167

24

B14056-907

70167

25 26 27

19D17238-60 19D17238-7 23B14053-2

70167 70167 70167

28

MS28774-6

96906

29

19C17238-1 24A19248-1

70167 70167

Change 1

UNITS PER ASSY

DESCRIPTION

USABLE ON CODE

SMR CODE

. . . .

1 1 1 1

.

1

.

1

. . .

1 1 1

PAFZZ

.

1

PAFZZ

. .

1 1

XA PAFZZ

PAFZZ

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 9-11. FIGURE & INDEX/ SHEET NO. 9-111 2 3 4 5

PART NUMBER

Valve Assembly UNITS PER ASSY

DESCRIPTION CAGE

1234567

62314-1

70167

B13968-5 B19153-1 B19162-1 B13978-1 B19154-1

04577 04577 04577 04577 04577

VALVE ASSEMBLY (see Figure NHA) . RING, Retaining . . . . . . . . . . . BODY . . . . . . . . . . . . . . . . . . PLATE, Cover . . . . . . . . . . . . BEARING . . . . . . . . . . . . . . . PULLEY ASSEMBLY . . . . . . .

9-9, 9 for . . . . . . . . . . . .

. . . . .

. . . . .

. . . . .

. . . . .

. . . . .

. . . . .

. . . . .

. . . . .

. . . . .

. . . . .

. . . . .

. . . . .

. . . . .

REF

USABLE ON CODE

SMR CODE PAFFF

1 1 1 1 1

9-23

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 FIGURE & INDEX/ SHEET NO. 9-11-

9-24

6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

PART NUMBER B19158-1 B14056-907 B19168-1 B19163-1 B19155-1 B19159-1 B19167-1 B14056-907 B14268-1 B19423-1 B14056-907 B19424-1 B14056-907 B19156-1 1002-0030-006 B14056-006 B19157-1 B19663-1 B14056-907

UNITS PER ASSY

DESCRIPTION CAGE

1234567

04577 04577 04577 04577 04577 04577 04577 04577 04577 04577 04577 04577 04577 04577 04577 04577 04577 04577 04577

. FITTING, Bottle . . . . . . . . . O-RING . . . . . . . . . . . . . . . SPRING . . . . . . . . . . . . . . GUIDE, Ball . . . . . . . . . . . . BALL, Flow . . . . . . . . . . . . FITTING, Outlet . . . . . . . . . SEAT . . . . . . . . . . . . . . . . . O-RING . . . . . . . . . . . . . . . DISC ASSEMBLY, Burst . . . ADAPTER . . . . . . . . . . . . . O-RING . . . . . . . . . . . . . . . VALVE, Charging . . . . . . . . O-RING . . . . . . . . . . . . . . . SHAFT . . . . . . . . . . . . . . . RING, Back-up . . . . . . . . . . O-RING . . . . . . . . . . . . . . . BEARING, Shaft . . . . . . . . . FITTING, Gauge protector . . O-RING . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . .

1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

USABLE ON CODE

SMR CODE

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 9-12. FIGURE & INDEX/ SHEET NO. 9-12-

1 2

PART NUMBER

Positive Closing Jet Pump Assembly UNITS PER ASSY

USABLE ON CODE

SMR CODE

...

REF

A

PAFFF

...

REF

B

PAFFF

... ...

1 4

A

DESCRIPTION CAGE

1234567

62362-103

70167

18D17233-0

70167

24C19265-3 13A11903-2

70167 70167

PUMP ASSEMBLY, Positive closing jet (supersedes 18D17233-0) (see Figure 9-8, 8 for NHA) PUMP ASSEMBLY, Positive closing jet (see . . Figure 9-8, 8 for NHA) . SPIDER ASSEMBLY . . . . . . . . . . . . . . . . . . . SCREW, Button head, multiple spline socket . (use with 62362-103) (AP)

XA

9-25

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 FIGURE & INDEX/ SHEET NO. 9-123

-4

5

6

7 8 9 10 11 12 13 14 15 16 17 18 19

20 21 22 23

PART NUMBER

CAGE

1234567

13A11903-9

70167

10W

04865

AN945-3P 61457-103

88044 70167

61457-101

70167

13A11903-2

70167

13A11903-9

70167

10W

04865

AN945-3P 15C18082 B14056-116 18A18182 16C17190 MS25082-4 18B18175 B140156-014 18B18178 18C18176-101 18D18179 17A18131-1 18A18173 18B18174-1

88044 70167 70167 70167 70167 96906 70167 70167 70167 70167 70167 70167 70167 70167

18B18174

70167

16D17193-1 12B11713 20C12215 12C11722

70167 70167 70167 70167

. SCREW, Button head, multiple spline socket . (use with 18D17233-0) (AP) . WASHER, Finishing (use with 62362-103) . . (AP) . WASHER, Flat (use with 18D17233-0) (AP) . . PLATE ASSEMBLY, Top (use with 62362- . . . 103) . PLATE ASSEMBLY, Top (use with . . . . . . . . 18D17233-0) . SCREW, Button head, multiple spline socket . (use with 62362-103) (AP) . SCREW, Button head, multiple spline socket . (use with 18D17233-0) (AP) . WASHER, Finishing (use with 62362-103) . . (AP) . WASHER, Flat (use with 18D172363-0) (AP) . . PORT ASSEMBLY, Inlet . . . . . . . . . . . . . . . . . PACKING, Preformed . . . . . . . . . . . . . . . . . . SPACER . . . . . . . . . . . . . . . . . . . . . . . . . . . SCREEN, Jet pump lock . . . . . . . . . . . . . . . . NUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PISTON, Jet pump lock . . . . . . . . . . . . . . . . . PACKING, Preformed . . . . . . . . . . . . . . . . . . SPRING, Compression . . . . . . . . . . . . . . . . . VALVE PLATE . . . . . . . . . . . . . . . . . . . . . . . VALVE, Locking . . . . . . . . . . . . . . . . . . . . . . RING, Retaining . . . . . . . . . . . . . . . . . . . . . . WASHER, Flat . . . . . . . . . . . . . . . . . . . . . . . NOZZLE, Piston, positive locking device . . . (use with 62362-103) . . NOZZLE, Piston, positive locking device . . . (use with 18D17233-0) . BODY, Jet pump . . . . . . . . . . . . . . . . . . . . . . GASKET, Outside (use with 18D17233-0) . . . . GASKET (use with 18D17233-0) . . . . . . . . . . FLANGE . . . . . . . . . . . . . . . . . . . . . . . . . . CODES A B

9-26

UNITS PER ASSY

USABLE ON CODE

...

4

B

...

4

A

... ...

4 1

B A

...

1

B

...

10

A

...

10

B

...

10

A

. . . . . . . . . . . . . .

. . . . . . . . . . . . . .

10 1 1 1 1 1 1 1 1 1 1 1 1 1

B

...

1

B

. . . .

1 1 1 1

B B

DESCRIPTION

USABLE ON Used on 62362-103 Used on 18D17233

. . . . . . . . . . . . . .

. . . .

. . . .

SMR CODE

PAFZZ

PAFZZ

A

PAFZZ PAFZZ

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 9-13.

(9-27 blank)/9-28

Crew Lanyard Assembly

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 FIGURE & INDEX/ SHEET NO.

PART NUMBER

CAGE

1234567

23C23588-1

70167

23C23588-2

70167

23C23693-1 13A19002-1 60136-101 23C23692-1

70167 70167 70167 70167

23C23692-2

70167

5

23C19236-1

70167

-6 7 8

23C23680-1 23C23680-5 23C23680-6

70167 70167 70167

LANYARD ASSEMBLY, Crew (see Figure 9-7, . 4 for NHA) LANYARD ASSEMBLY, Troop (see Figure 9-7, 4 for NHA) . CABLE ASSEMBLY, Valve, release . . . . . . . . . SLEEVE, Nicopress . . . . . . . . . . . . . . . . . . . CABLE ASSEMBLY . . . . . . . . . . . . . . . . . . CABLE ASSEMBLY, Pull, container, life raft . . (use with 23C23588-1) . CABLE ASSEMBLY, Pull, container, life raft . . (use with 23C23588-2) . HOOK ASSEMBLY, Mooring (use with . . . . . 23C23588-2) . HANDLE, Pull, inflation . . . . . . . . . . . . . . . . . . SLEEVE, 3/8 in dia rod . . . . . . . . . . . . . . . . . HANDLE, Wire, ¼ in dia rod . . . . . . . . . . .

9-13-

-1 2 3 4

UNITS PER ASSY

USABLE ON CODE

SMR CODE

...

REF

A

PAFFF

...

REF

B

PAFFF

DESCRIPTION

CODES A B

. . . .

. . . .

. . . .

2 1 1 1

A

...

1

B

...

1

B

... ... ...

1 1 1

PAFZZ

USABLE ON Used on 23C23588-1 Used on 23C23588-2

9-29

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 9-14.

9-30

25-Man Crew Life Raft/Survival Kit Case

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 FIGURE & INDEX/ SHEET NO.

PART NUMBER

CAGE

1234567

22D23593-1

70167

22D23593-103

70167

22C23648-1

70167

22C23648-2

70167

-2 3 4 5

23C23690-1 13B12058-1 FDA-1480 M11637-4

70167 70167 70167 81349

-6 7 8 9 10

23C23691-1 MIL-F-21840G MIL-F-21840G MS20230-BS2 MIL-W-5664D

70167 81349 81349 96906 81349

11 -12

M11637-4 22D23595-105

81349 70167

22D23595-107

70167

13

MIL-W-17227F

81349

14 15 16

MS20470A4-7 C16251-4 NO NUMBER

96906 70167 77969

17 18 19 20 21

23D23708-6 MS20470AD4-12 AN960-C4 23C23705-1 22K2-82

70167 96906 88044 70167 019L2

22 23

AN970-3 COML

88044 70167

24

23B23710-1

70167

23B23710-2

70167

23B23710-3

70167

25 26

23C23701-1 22K1-82

70167 019L2

27

COML

70167

28 29 30 31

AN970-3 413010 23C23699-1 22K1-82

88044 98580 70167 019L2

32

COML

70167

33 34 35

AN970-3 413010 22B25036 22B25036-3

88044 70167 70167

36

22B25037 22B25037-3

70167 70167

37 38

MS25489-385 22D23595-48

96906 70167

CASE, Life raft/survival kit, 25-Man crew (see . Figure 9-7, 3 for NHA) CASE, Life raft/survival kit, 25-Man crew (see . Figure 9-7, 3 for NHA) . STRAP ASSEMBLY, Case closure (use with . 22D23593-1) . STRAP ASSEMBLY, Case closure (use with . 22D23593-103) . . STRAP ASSEMBLY, Cone half . . . . . . . . . . . . . CONE, Parachute . . . . . . . . . . . . . . . . . . . . . BUCKLE, Adjustable . . . . . . . . . . . . . . . . . . . WEBBING, Cotton, 1.5 x 13.25 in lg type . III . . STRAP ASSEMBLY, Grommet Half . . . . . . . . . . FASTENER, Pile, white, 1.52 x 2 in lg . . . . . . . FASTENER, Hook, white, 1.52 x 2 in lg . . . . . . GROMMET ASSEMBLY, Spur . . . . . . . . . . . . LOOP, Belt, class I, 3.5 in lg elastic web- . bing . . . WEBBING, Cotton, 1.5 x 63 in lg type III . . . CASE ASSEMBLY, Life raft/survival kit 25- . . Man crew (use with 22D23593-1) . CASE ASSEMBLY, Life raft/survival kit 25- . . Man crew (use with 22D23593-103) . . HANDLE, Nylon webbing, class I, 1 in x 10 . in lg . . RIVET (AP) . . . . . . . . . . . . . . . . . . . . . . . . . PLATE, Reinforcing . . . . . . . . . . . . . . . . . . . . SEAL, Neoprene, 0.1875 in OD x 0.1250 in ID x 136 in lg . . CLOSURE, Extruded . . . . . . . . . . . . . . . . . . . RIVET (Supersedes MS20470AD4-11) (AP) . . WASHER, Flat (AP) . . . . . . . . . . . . . . . . . . . BRACKET, Draw hook ejection . . . . . . . . . . . . NUT, Hexagon, metal cap, 8-32NC-3B cad . pl steel (AP) . . WASHER, Flat (AP) . . . . . . . . . . . . . . . . . . . SCREW, Button, socket head, 8-32NC-3A x 0.4375 in lg cad pl steel (AP) . . SHIM, Draw hook ejection bracket, 0.010 in thk. . . SHIM, Draw hook ejection bracket, 0.020 in thk. . . SHIM, Draw hook ejection bracket, 0.050 in thk. . . BRACKET, Reinforcing . . . . . . . . . . . . . . . . . NUT, Hexagon, metal cap, 8-32NC-3B, cad . pl steel (AP) . . SCREW, Button, socket head, 8-32NC-3A . . x0.4375 in lg cad pl steel (AP) . . WASHER, Flat (AP) . . . . . . . . . . . . . . . . . . . EYELET . . . . . . . . . . . . . . . . . . . . . . . . . . . . SPACER, Reinforcing . . . . . . . . . . . . . . . . . . NUT, Hexagon, metal cap, 8-32NC-3B cad . pl steel (AP) . . SCREW, Button, socket head, 8-32NC-3A . . x0.4375 in lg cad pl steel (AP) . . WASHER, Flat (AP) . . . . . . . . . . . . . . . . . . . EYELET . . . . . . . . . . . . . . . . . . . . . . . . . . . . PLATE, Identification (use with 22D23593-1) . . PLATE, Identification (use with 22D23593- . 103) . . PLATE, Identification (use with 22D23593-1) . . PLATE, Identification (use with 22D23593- . 103) . . GROMMET, Rubber . . . . . . . . . . . . . . . . . . . CONTAINER, Upper half (use with . . . . . . . 22D23593-1)

9-14-

-1

UNITS PER ASSY

USABLE ON CODE

SMR CODE

...

REF

A

PAFFF

...

REF

B

PAFFF

...

3

A

PAFZZ

...

3

B

PAFZZ

. . . .

. . . .

. . . .

1 1 1 1

PAFZZ MFF

. . . . .

. . . . .

. . . . .

1 1 1 1 1

PAFZZ MFF MFF PAFZZ MFF

... ...

1 1

A

MFF PBFFF

...

1

B

PBFFF

...

5

... ... ...

4 20 1

. . . . .

. . . . .

1 10 10 1 4

... ...

4 4

...

AR

...

AR

...

AR

... ...

3 4

...

4

. . . .

. . . .

4 4 1 4

...

4

. . . .

. . . .

4 4 1 1

A B

MDF MDF

... ...

1 1

A B

MDF MDF

... ...

1 1

A

DESCRIPTION

. . . . .

. . . .

. . . .

XA

MFF

PAFZZ PAFZZ PAFZZ

PAFZZ

PAFZZ

PAFZZ

XA

9-31

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 FIGURE & INDEX/ SHEET NO.

PART NUMBER

CAGE

1234567

22D23595-53

70167

39 40 41 42 43

23B23700-1 79-NTE-048 23B23709-1 23C23677-1 22K2-82

70167 019L2 70167 70167 019L2

44

COML

70167

45 46 47

AN970-3 413010 23B23711-1

88044 98580 70167

23B23711-2

70167

23B23711-3

70167

48 49 50 51

23C23675-1 MS21042-3 AN970-3 22K2-82

70167 96906 88044 019L2

52

COML

70167

53 54 55 56

AN970-3 413010 23B23676-1 22K2-82

88044 70167 019L2

57

COML

70167

58 59 60

AN970-3 413010 22C23633-2

88044 70167

22C23633-105

70167

22D23595-49

70167

22D23595-54

70167

24C23720-2

70167

24C23720-105

70167

. . CONTAINER, Upper half (use with . . . . . . . 22D23593-103) . . HINGE, Quick release . . . . . . . . . . . . . . . . . . NUT, Hexagon, 1/4-28 (AP) . . . . . . . . . . . . . . WASHER, Flat (AP) . . . . . . . . . . . . . . . . . . . BRACKET, Hinge, quick release . . . . . . . . . . . NUT, Hexagon, metal cap, 8-32NC-3B cad . pl steel (AP) . . SCREW, Button, socket head, 8-32NC-3B x 0.562 in lg cad pl steel (AP) . . WASHER, Flat (AP) . . . . . . . . . . . . . . . . . . . EYELET . . . . . . . . . . . . . . . . . . . . . . . . . . . . SHIM, Quick release hinge bracket, 0.010 in thick . . SHIM, Quick release hinge bracket, 0.020 in thick . . SHIM, Quick release hinge bracket, 0.050 in thick . . PIVOT ASSEMBLY, Aft . . . . . . . . . . . . . . . . . NUT, Self locking (AP) . . . . . . . . . . . . . . . . . . WASHER, Flat (AP) . . . . . . . . . . . . . . . . . . . NUT, Hexagon, metal cap, 8-32NC-3B cad . pl Steel (AP) . . SCREW, Button, socket head, 8-32NC-3A x 0.4375 in lg cad pl steel (AP) . . WASHER, Flat (AP) . . . . . . . . . . . . . . . . . . . EYELET . . . . . . . . . . . . . . . . . . . . . . . . . . . . PIVOT ASSEMBLY, Forward . . . . . . . . . . . . . NUT, Hexagon, metal cap, 8-32NC-3B, cad . pl steel (AP) . . SCREW, Button, socket head, 8-32NC-3A x 0.4375 in lg cad pl steel (AP) . . WASHER, Flat (AP) . . . . . . . . . . . . . . . . . . . EYELET . . . . . . . . . . . . . . . . . . . . . . . . . . . . POCKET ASSEMBLY, Lanyard (use with . . . 22D23593-1) . . POCKET ASSEMBLY, Lanyard (use with . . . 22D23593-103) . . CONTAINER, Lower half (use with . . . . . . . 22D23593-1) . . CONTAINER, Lower half (use with . . . . . . . 22D23593-103) . . COVER ASSEMBLY, Cable (use with . . . . . 22D23593-1) . . COVER ASSEMBLY, Cable (use with . . . . . 22D23593-103)

9-14-

61

62

CODES A B

9-32

UNITS PER ASSY

USABLE ON CODE

SMR CODE

...

1

B

XA

. . . . .

. . . . .

1 1 1 1 4

...

4

... ... ...

4 4 AR

...

AR

...

AR

DESCRIPTION

USABLE ON Used on 22D23593-1 Used on 22D23593-103

. . . .

. . . . .

. . . .

. . . .

1 2 1 3

...

3

. . . .

. . . .

3 3 1 4

...

4

... ... ...

4 4 1

A

...

1

B

...

1

A

XA

...

1

B

XA

...

2

A

XB

...

2

B

XB

. . . .

PAFZZ PAFZZ PAFZZ

PAFZZ PAFZZ PAFZZ

PAFZZ

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 9-15.

(9-33 blank)/9-34

25-Man Troop Life Raft/Survival Kit Air Case

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 FIGURE & INDEX/ SHEET NO.

PART NUMBER

CAGE

1234567

22D23573-1

70167

22D23573-103

70167

-1 -2 3 4 5

23C23648-2 23C23690-2 13B12C58-1 FDA-1480 M11637-4

70167 70167 70167 98313 81349

-6 7

23C23691-2 MIL-F-21840G

70167 81349

8

MIL-F-21840G

81349

9 10

MS20230-BS2 MIL-W-5664D

96906 81349

11

M11637-4

81349

22D23626-105

70167

22D23626-107

70167

13

MIL-W-17337F

81349

14 15 16

MS2047A4-8 C16251-4 22C23633-1

72692 70167 70167

22C23633-103

70167

18

22D23626-30 22D23626-21 NO NUMBER

70167 70167 77969

19

23D23708-4

70167

D23708-5

70167

MS20470A4-12 AN960-C4 22D23626-21 22C23667-1

96906 88044 70167 70167

22C23667-103

70167

24C23720-1

70167

24C23720-103

70167

24C23733-2 C23733-3 22B25033 22B25033-3

70167 70167 70167 70167

27

22B25034-2 B25034-3

70167 70167

28 29

MS35489-38S 22D23626-31 22D23626-42

96906 70167 70167

CASE, Life raft/survival kit, 25-Man troop (see Figure 9-7, 3 for NHA) CASE, Life raft/survival kit, 25-Man troop (see Figure 9-7, 3 for NHA) . STRAP ASSEMBLY, Case closure . . . . . . . . . . STRAP ASSEMBLY, Cone half . . . . . . . . . . . . . CONE, Parachute . . . . . . . . . . . . . . . . . . . . . BUCKLE, Adjustable . . . . . . . . . . . . . . . . . . . WEBBING, Cotton 1.5 in x 16.25 in, type . III . . STRAP ASSEMBLY, Grommet half . . . . . . . . . . FASTENER, Pile, white, 1.5 in x 2 in, type II . . . FASTENER, Hook, white, 2 in x 2.10 in, . . type II . . . GROMMET ASSEMBLY, spur . . . . . . . . . . . . . LOOP, Belt, class I, 3.5 in lg elastic web- . bing . . . WEBBING, Cotton, 1.5 in x 71.25 in lg . . . type III . CASE ASSEMBLY, Life raft/survival kit 25- . . Man troop (use with 22D23573-1) . CASE ASSEMBLY, Life raft/survival kit 25- . . Man troop (use with 22D23573-103) . . HANDLE, Nylon webbing, class I, 1 in x 10 . in lg . . RIVET (AP) . . . . . . . . . . . . . . . . . . . . . . . . . PLATE, Reinforcement . . . . . . . . . . . . . . . . . POCKET ASSEMBLY, lanyard (use with . . . 22D23573-1) . . POCKET ASSEMBLY, lanyard (use with . . . 22D23573-103) . . CASE, Lower half (use with 22D23573-1) . . . . CASE, Lower half (use with 22D23573-103) . . SEAL, Neoprene, 0.1875 in OD x 0.1250 in ID x 106.875 in lg . . CLOSURE, Extruded (use with . . . . . . . . . . 22D23573-1) . . CLOSURE, Extruded (use with 22D23573- . 103) . . RIVET (Supersedes MS20470AD4-11) (AP) . . WASHER, Flat (AP) . . . . . . . . . . . . . . . . . . . FASTENER, Hook and pile, 5/8 x 1-½ in . . . . . POCKET FLAP ASSEMBLY, Lanyard (use . with 22D23573-1) . . POCKET FLAP ASSEMBLY, Lanyard (use . with 22D23573-103) . . COVER ASSEMBLY, Cable (use with . . . . . 22D23573-1) . . COVER ASSEMBLY, Cable (use with . . . . . 22D23573-103) . . LEG (use with 22D23573-1) . . . . . . . . . . . . . . LEG (use with 22D23573-103) . . . . . . . . . . . . PLATE, Identification (use with 22D23573-1) . . PLATE, Identification (use with 22D23573- . 103) . . PLATE, Identification (use with 22D23573-1) . . PLATE, Identification (use with 22D23573- . 103) . . GROMMET, Rubber . . . . . . . . . . . . . . . . . . . CASE, Upper (use with 22D23573-1) . . . . . . . CASE, Upper (use with 22D23573-103) . . .

9-15-

-12

17

20 21 22 23

24

25 26

UNITS PER ASSY

USABLE ON CODE

SMR CODE

...

REF

A

PAFDD

...

REF

B

PAFDD

DESCRIPTION

CODES A B

. . . . .

. . . . .

. . . . .

3 1 1 1 1

PAFZZ MFF

... ...

1 1

PAFZZ MFF

...

1

MFF

... ...

1 1

MFF

...

1

MFF

...

1

A

PBFFF

...

1

B

PBFFF

...

6

... ... ...

2 24 1

A

...

1

B

... ... ...

1 1 1

A B

XA XA

...

1

A

XA

...

1

B

XA

. . . .

. . . .

10 20 1 1

A

...

1

B

...

2

A

...

2

B

. . . .

. . . .

2 2 1 1

A B A B

XB XB MDF MDF

... ...

1 1

A B

MDF MDF

... ... ...

1 1 1

A B

XA XA

. . . .

. . . .

PAFZZ XA

MFF

MFF

USABLE ON Used on 22D23573-1 Used on 22D23573-103

9-35

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 9-16. FIGURE & INDEX/ SHEET NO. 9-161

9-36

PART NUMBER S-186 MIL-I-23145

LPU-6/P Infant’s Floating Survival Cot

DESCRIPTION CAGE

1234567

80049 81349

SURVIVAL COT, Infants floating, type LPU-6/P . . . INFLATION ASSEMBLY, Type III (see Figure . . . . 9-17 for breakdown)

UNITS PER ASSY REF 1

USABLE ON CODE

SMR CODE PFFFF PAFZZ

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 9-17. FIGURE & INDEX/ SHEET NO. 9-17-

PART NUMBER MIL-I-23145

Carbon Dioxide Inflation Assembly UNITS PER ASSY

DESCRIPTION CAGE

1234567

81349

INFLATION ASSEMBLY, Carbon dioxide, type . III (see Figure 9-16, 1 for NHA) . HOUSING . . . . . . . . . . . . . . . . . . . . . . . . . . PACKING, Preformed (when exhausted use . PN A13915) . CAP, Inflator . . . . . . . . . . . . . . . . . . . . . . . . . PACKING, Preformed . . . . . . . . . . . . . . . . . . KNOB, Pull, inflator . . . . . . . . . . . . . . . . . . . . CYLINDER, Carbon dioxide, type III (AP) . . . (used on LPU-6/P) . SCREW, Set . . . . . . . . . . . . . . . . . . . . . . . . GASKET, Inflator, inlet . . . . . . . . . . . . . . . . .

1 2

No Number 58A3568

3 4 5 6

52A6600 58A3569 53B6265 MIL-C-601

80049 80049 80049 81349

7 8

MS51965-28 8622069

96906

USABLE ON CODE

SMR CODE

...

REF

PAFZZ

... ...

1 1

XA PAFZZ

. . . .

. . . .

1 1 1 2

XB PAFZZ XB PAFZZ

... ...

2 2

PAFZZ PAFZZ

. . . .

9-37

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 9-18. FIGURE & INDEX/ SHEET NO.

PART NUMBER

LPU-3/P and LPU-10/P Life Preserver Assemblies

CAGE

1234567

MIL-L-38484 MIL-L-38484 58K3589

81349 81349 80049

58J3590-1L 58J3590-1R FD1498 58J3590-1R7-51-2 58J3590-1L8-5-1-2

80049 80049 98313 80049 80049

5

58J3590-1L7-4-1-2

80049 80049

6

58J3590-1R8-41-2 58K3588-3

80049

7

58K3588-4

80049

8

MIL-L-27639B

LIFE PRESERVER, LPU-3/P . . . . . . . . . . . . . . LIFE PRESERVER, LPU-10/P . . . . . . . . . . . . . . CONTAINER AND HARNESS ASSEMBLY, . . . (use with LPU-10/P) . CONTAINER, Cell, LH (use with LPU-3/P) . . . . CONTAINER, Cell, RH (use with LPU-3/P) . . . . . HOOK, (use with LPU-10/P) . . . . . . . . . . . . . . . FASTENER, Slide 5-½ in long (RH) (use . . . . with LPU-3/P) . . FASTENER, Slide 5-½ in lg (LH) (use with . . LPU-3/P) . . FASTENER, Slide (lacing loops) 4-½ in long . (LH) (use with LPU-3/P) . . FASTENER, Slide (lacing loops) 4-½ in lg . . . (RH) (use with LPU-3/P) . CELL, Flotation, LH (use with LPU-3/P and . . . LPU-10/P) . CELL, Flotation, RH (use with LPU-3/P and . . LPU-10/P) . INFLATOR ASSEMBLY, FLU-1/P (see Figure . 9-19 for breakdown) (use with LPU-3/P and LPU-10/P)

9-181 2 3 4

CODES A B

9-38

UNITS PER ASSY

USABLE ON CODE

SMR CODE

REF REF 1

A B B

PFFFF PAFFF PAFFF

. . . .

1 1 1 1

A A B A

PAFFF PAFFF PAFZZ PAFZZ

..

1

A

PAFZZ

..

1

A

PAFZZ

..

1

A

PAFZZ

..

1

A,B

PAFFF

..

1

A,B

PAFFF

..

2

A,B

PAFZZ

DESCRIPTION

USABLE ON Used on MIL-L-38484 Used on MIL-L-38484

.. .. .. . . . .

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 9-19. FIGURE & INDEX/ SHEET NO. 9-19-

PART NUMBER MIL-PRF-27639B

FLU-1/P Inflator Assemblies UNITS PER ASSY

DESCRIPTION CAGE

1234567

81349

INFLATOR ASSEMBLY, FLU-1/P (see Figure 9-18, 8 for NHA) . PIN (use with MIL-L-27639B) . . . . . . . . . . . . GASKET, Inflator, inlet . . . . . . . . . . . . . . . . . CYLINDER, Carbon dioxide, type II, 28-31 . grams . CAP, Inflator . . . . . . . . . . . . . . . . . . . . . . . . GASKET, Inflator stem, upper (when ex- . . . hausted use PN A13915) . GASKET, Inflator stem, lower . . . . . . . . . . . . KNOB, Pull, inflator . . . . . . . . . . . . . . . . . .

1 2 3

58A3567 MIL-PRF-25369

4 5

52A6600 58A3568

80049

6 7

58A3569 53B6265

80049 80049

81349

USABLE ON CODE

SMR CODE

....

REF

PAFZZ

.... .... ....

1 1 1

XB PAFZZ PAFZZ

.... ....

1 1

PAFZZ PAFZZ

.... ....

1 1

PAFZZ PAFZZ

9-39

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

Figure 9-20. FIGURE & INDEX/ SHEET NO. 9-201 2 3 4 5

9-40

PART NUMBER A-A-50652 840-AM MIL-C-601 No Number A3030134 A3-06-0267

Commercial Life Preserver Assembly, Adult/Child (A-A-50652) UNITS PER ASSY

DESCRIPTION CAGE

1234567

58536 98021 81349

LIFE PRESERVER, Adult/child . . . . . . . . . . . . INFLATOR ASSEMBLY, Halkey Roberts . . . . . CYLINDER, Carbon dioxide, type III (16 GM) . CONTAINER, Storage . . . . . . . . . . . . . . . . . . BATTERY . . . . . . . . . . . . . . . . . . . . . . . . . . LIGHT UNIT, Marker, distress . . . . . . . . . . .

18560 18560

. . . . . .

. . . . . .

. . . . . .

REF 2 2 1 1 1

USABLE ON CODE

SMR CODE PFFFF XB PAFZZ MFF PAFZZ PAFZZ

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

SECTION III NUMERICAL INDEX

PART NUMBER

FIGURE & INDEX

A-A-50652 A-110-16 A-110-17 A-110-19 A-110-28 A-128-RDB-HD A-128-1 A-128-12 A-128-13 A-128-14B-2203

9-209-3-19 9-3-18 9-3-21 9-3-20 F9-3-2 9-3-26 9-3-25 9-3-3 F9-3-2

A-128-14B-4 A-128-14B-8 A-128-3B A-128-4 A-128-5 A-128-6A A-128-91-HD A-128-92 AN526C632-5 AN565BC4H2

9-3-2 F9-3-2 9-3-23 9-3-16 9-3-17 9-3-14 9-3-7 9-3-12 9-3-13 9-4-9

AN816-4J AN929-4 AN936A6B AN945-3P AN960-C4 AN970-3

ASV-601 ASV-701 ASV710 A110-21 A3-06-0267 A3030134 B13968-5 B13978-1 B140156-014 B14056-006 B14056-116 B14056-907

9-4-22 9-9-4 9-9-3 9-3-9 F9-12-3 F9-12-6 9-14-19 9-15-21 9-14-22 9-14-28 9-14-33 9-14-45 9-14-50 9-14-53 9-14-58 9-3-4 9-3-15 F9-3-26 9-3-10 9-20-5 9-20-4 9-11-1 9-11-4 9-12-13 9-11-21 9-12-8 9-9-8 9-10-9 9-10-12

PART NUMBER

FIGURE & INDEX

FIGURE & INDEX

PART NUMBER

9-10-17

B14056-916 B14268-1 B19153-1

9-10-22 9-10-24 9-11-7 9-11-13 9-11-16 9-11-18 9-11-24 9-9-11 9-11-14 9-11-2

B19154-1 B19155-1 B19156-1 B19157-1 B19158-1 B19159-1 B19162-1 B19163-1 B19165-1 B19167-1

9-11-5 9-11-10 9-11-19 9-11-22 9-11-6 9-11-11 9-11-3 9-11-9 9-9-10 9-11-12

B19168-1 B19423-1 B19424-1 B19662-1 B19663-1 B25034-3 C-50980

9-11-8 9-11-15 9-11-17 9-9-5 9-11-23 F9-15-27 F9-2-1 9-69-4-8 9-4-21

CF3600 CP4-9 COML

C16251-4 C23733-3 D23708-5 FDA-1480 FD1498 LM73CR832-4E MIL-C-601 MIL-F-21840G

9-14-23 9-14-27 9-14-32 9-14-44 9-14-52 9-14-57 9-14-15 9-15-15 F9-15-25 F9-15-19 9-14-4 9-15-4 9-18-3 9-5-2 9-17-6 9-20-2 9-14-7

9-14-8 9-15-7 9-15-8 MIL-I-23145 MIL-L-27639B MIL-L-38484 MIL-PRF-25369 MIL-PRF-27639B MIL-W-17227F MIL-W-17337F MIL-W-5664D

MS16555-601 MS18068-3 MS20230-BS2 MS2047A4-8 MS20470AD4-12 MS20470A4-12 MS20470A4-7 MS21042-3 MS25082-4 MS25489-385 MS26545B2C0205A MS26545B2C0415 MS28774-6 MS35489-38S MS51938-6 MS51957-26 MS51965-28 M11637-4

NAS1352N08-10 NO NUMBER No Number S-186 10W 1002-0030-006 1051-0001-221 1106AS102

9-16-1 9-179-18-8 9-18F9-189-19-3 9-199-14-13 9-15-13 9-14-10 9-15-10 9-4-18 9-4-44 9-14-9 9-15-9 9-15-14 9-14-18 9-15-20 9-14-14 9-14-49 9-12-11 9-14-37 F9-3-1 9-3-1 9-10-28 9-15-28 F9-3-11 9-4-5 9-4-2 9-17-7 9-14-5 9-14-11 9-15-5 9-15-11 9-4-28 9-14-16 9-15-18 9-17-1 9-20-3 9-169-12-3 9-12-6 9-11-20 9-9-6 9-3-6

Change 1

9-41

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 FIGURE & INDEX

PART NUMBER 1106AS102-1 1106AS115 12B11713 12C11486-0 12C11722

F9-3-6 F9-69-12-21 9-8-5 9-12-23

13A11903-2

9-12-2 9-12-5 F9-12-2 F9-12-5 9-13-2 9-15-3 9-14-3 9-8-9 9-5-11 9-4-41

13A11903-9 13A19002-1 13B12C58-1 13B12058-1 13C13028-10 1466 1468 1472

16C13303-1 16C17190 16D17193-1 17-S-V1

9-4-49 9-5-9 9-5-10 9-12-7 9-4-42 9-5-6 9-8-4 9-12-10 9-12-20 9-3-8

17A18107 17A18131-1 17B17205-9 17B18110 18A18173 18A18182 18B18174 18B18174-1 18B18175 18B18178

9-10-15 9-12-17 9-9-1 9-10-18 9-12-18 9-12-9 F9-12-19 9-12-19 9-12-12 9-12-14

18C18170-1 18C18176-101 18D17233-0

18D18179 19-SV-2 19C17238-1 19C17238-25

9-9-7 9-12-15 F9-8-8 F9-12F9-9-9 9-109-12-16 9-3-22 9-10-29 9-10-5

19C17238-6 19D12238-10 19D17238-11 19D17238-14 19D17238-18 19D17238-19 19D17238-24 19D17238-26

9-10-6 9-10-20 9-10-10 9-10-8 9-10-1 9-10-19 9-10-13 9-10-2

1475 15C18082 1519

18D18167-1

9-42

Change 1

PART NUMBER

FIGURE & INDEX

19D17238-27 19D17238-3

9-10-7 9-10-4

19D17238-4 19D17238-5 19D17238-60 19D17238-61 19D17238-7 19D17238-8 19D17238-9 20B19171-80 20C12215 2045

9-10-3 9-10-14 9-10-25 9-10-16 9-10-26 9-10-11 9-10-21 9-8-6 9-12-22 9-5-3

2046 2066 22B15058 22B25033 22B25033-3 22B25034-2 22B25036 22B25036-3 22B25037 22B25037-3

9-5-4 9-5-1 9-10-23 9-15-26 F9-15-26 9-15-27 9-14-35 F9-14-35 9-14-36 F9-14-36

22C17342-1 22C17343-1 22C17345-1 22C17346-1 22C23588-1 22C23588-2 22C23633-1 22C23633-103 22C23633-105 22C23633-2

F9-9-2 F9-9-12 9-9-2 9-9-12 9-7-4 F9-7-4 9-15-16 F9-15-16 F9-14-60 9-14-60

22C23648-1 22C23648-2 22C23667-1 22C23667-103 22C73656-1 22D17341-1

9-14-1 F9-14-1 9-15-23 F9-15-23 9-8-7 F9-8-3 F9-99-8-3 9-9F9-7-

22D17344-1 22D23572-1 22D23572-103 22D23573-1 22D23573-103 22D23574-1 22D23574-103 22D23574-105

F9-7F9-7-3 9-15F9-7-3 F9-159-7-5 9-8F9-7-5 F9-8F9-7-5 F9-8-

PART NUMBER 22D23574-2 22D23575-1 22D23576-1 22D23583-1 22D23583-103 22D23583-105 22D23583-2 22D23585-103 22D23585-105 22D23592-1 22D23592-103 22D23593-1 22D23593-103 22D23594-1 22D23595-105 22D23595-107 22D23595-48 22D23595-49 22D23595-53 22D23595-54 22D23626-105 22D23626-107 22D23626-21 22D23626-30 22D23626-31 22D23626-42 22K1-82

FIGURE & INDEX F9-7-5 F9-89-8-1 F9-7--1 9-7-2 F9-7-2 F9-7-2 F9-7-2 9-8-2 F9-8-2 9-7F9-79-7-3 9-14F9-7-3 F9-149-7--1 9-14-12 F9-14-12 9-14-38 9-14-61 F9-14-38 F9-14-61 9-15-12 F9-15-12 F9-15-17 9-15-22 9-15-17 9-15-29

23B14053-2 23B23676-1 23B23700-1

F9-15-29 9-14-26 9-14-31 9-14-21 9-14-43 9-14-51 9-14-56 9-10-27 9-14-55 9-14-39

23B23709-1 23B23710-1 23B23710-2 23B23710-3 23B23711-1 23B23711-2 23B23711-3 23C19236-1 23C23588-1 23C23588-2

9-14-41 9-14-24 F9-14-24 F9-14-24 9-14-47 F9-14-47 F9-14-47 9-13-5 9-13F9-13-

23C23648-2 23C23675-1 23C23677-1 23C23680-1

9-15-1 9-14-48 9-14-42 9-13-6

22K2-82

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 PART NUMBER

FIGURE & INDEX

PART NUMBER

FIGURE & INDEX

PART NUMBER

FIGURE & INDEX

23C23680-5 23C23680-6 23C23690-1 23C23690-2 23C23691-1 23C23691-2

9-13-7 9-13-8 9-14-2 9-15-2 9-14-6 9-15-6

24C23733-2 24026 24147 24148 24385 24386

9-15-25 9-4-31 9-4-35 9-4-50 9-4-48 9-4-29

58J3590-1R 58J3590-1R7-5-1-2 58J3590-1R8-4-1-2 58K3588-3 58K3588-4 58K3589

F9-18-2 9-18-4 F9-18-5 9-18-6 9-18-7 9-18-1

23C23692-1 23C23692-2 23C23693-1 23C23699-1 23C23701-1 23C23705-1 23D23708-4 23D23708-6 23632 23775

9-13-4 F9-13-4 9-13-1 9-14-30 9-14-25 9-14-20 9-15-19 9-14-17 9-4-43 9-4-16

24577 24580 24583-1 24585 24586 24587-1 24590 24915-1 3-SV-1 413010

9-4-13 9-4-19 9-4-7 9-4-38 9-4-37 9-4-36 9-4-6 9-4-27 9-3-11 9-14-29

60053-101 60054-101 60136-101 6014-5 6022-1 6075 6077 6122-5 61457-101 61457-103

F9-7--1 F9-7--1 9-13-3 9-4-39 9-4-33 9-5-8 9-5-5 9-4-40 F9-12-4 9-12-4

23780 23781 23782 23787 23793 23794 23795 23796 23798 23801

9-4-24 9-4-26 9-4-25 9-4-17 9-4-3 9-4-10 9-4-20 9-4-23 9-4-4 9-4-14

62A82H2-1 62314-1

46-PV-2 52A6600

9-14-34 9-14-46 9-14-54 9-14-59 9-3-24 9-17-3 9-19-4 9-17-5 9-19-7 9-3-

9-19-9-9 9-119-8-8 9-129-1-1 9-29-5-7 9-4-45 F9-5-12

23802-2 23803-2 23818 23819 23820 23821 23878 23909 24A19248-1 24C19265-3

9-4-15 9-4-1 9-4-11 9-4-12 9-4-47 9-4-34 9-4-32 9-4-30 F9-10-29 9-12-1

79-NTE-048 8000 8140709 840-AM 8622069 9141 9153

58A3569

F9-2-2 F9-39-1-2 F9-39-2-2 F9-39-19-2 9-17-2 9-19-5 9-17-4

24C23720-1 24C23720-103 24C23720-105 24C23720-2

9-15-24 F9-15-24 F9-14-62 9-14-62

9-19-6 9-18-2 9-18-5 F9-18-4

9968

58J3590-1L 58J3590-1L7-4-1-2 58J3590-1L8-5-1-2

53B6265 55C3689 55C3689-11 55C3689-2 55C3689-4 58A3567 58A3568

62362-103 63A120H1-30 63A80H1 7051 7072 762

9864-05

9-14-40 9-4-46 9-3-5 9-20-1 9-17-8 9-5-12 9-2-1 9-5F9-3-2 9-4F9-4-50

9-43/(9-44 blank)

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

GLOSSARY A ABRADE/ABRASION — A fuzzy spot or area on cloth, usually caused by rubbing against an object. To scrape off, to rub, to scratch, or ward away by friction, to roughen by rubbing away by friction, as emery or pumice. ACCORDION-FOLDING — Folding equipment into S-shaped layers of predetermined size. Accordion folding produces a packaged assembly in the desired finished shape. ACID — A fundamental chemical class distinguished by having reactive hydrogen radicals (pH below 7.0). Acids can be extremely corrosive to metal and damaging to fabric. ADJUST — To bring within specified limits the variable elements of an item. ALKALINE — A substance which is opposite to an acid; a base. Also, any substance which has the properties of an alkali (metallic hydroxide). APEX — The top center of the sea anchor canopy; the point at which all apex lines cross. Also called peak or crown. ASPIRATED — To draw (air) by suction. AWL — A pointed tool for piercing small holes in cloth, leather, wood, and other soft materials.

B BACKSTITCH — A stitch made by inserting the needle a stitch length to the right and bringing it up an equal distance to the left. Also, sewing back over a row of stitches. BACKSTRAP — Part of the harness webbing extending across the back of the wearer. It may or may not be adjustable. BALL, CABLE RETAINING — A steel ball which is swaged to the ripcord cable and secures the ripcord handle to the cable. BAND, LATERAL — Webbing inserted in sea anchor skirt and vent hems to reinforce edges and distribute load. BAND, RETAINING — A rubberband used to hold faked lines in place. BARTACK — A concentrated series of zigzag-like stitches used to reinforce points of stress. BASTING STITCH — See STITCH, BASTING. BEESWAX — A wax that is applied cold or melted to thread to prevent raveling or unknotting and to make thread easier to sew.

Glossary 1

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 BENCH CHECK — A physical inspection or functional test of an item removed for an alleged malfunction in order to determine if the part or item is serviceable or repairable. It also includes a determination of the extent of maintenance or repair and possible overhaul required to return it to serviceable status. BIAS CONSTRUCTION — A type of construction in which the cloth is cut and sewn so that the centerline of each piece runs at a 45 degree angle to the warp and filling thread of the cloth. BINDING — A piece of tape or fabric folded over and stitched to a raw edge of cloth to prevent raveling or fraying. BODKIN — A large-eyed, blunt needle instrument for inserting thread, tape, ribbon, or line through a loop, hem, or channel. BOLT — A package or roll of cloth of varying widths. Also, a measuring term for 40 yards of material. BOXSTITCH — See STITCH, BOX. BRAID — A narrow band of interlaced strands. BREAKCORD — A thread or tape tied between components that is intended to break under desired load during deployment. BROKEN PICK — A broken filling yarn. BUNCHED STITCHING — Stitches too close or more stitches per inch than required. BURL — A knot or lump in thread or cloth. BURNS, FRICTION — Burns caused by two textile surfaces rubbing together at higher speeds. BUTTONHOLE STITCH — See STITCH, BUTTONHOLE.

C CALIBRATE — To determine and make required corrections in instruments or test equipment used in precise measurement. Consists of the comparison of two instruments, one of which is a certified standard of known accuracy, to detect and adjust any discrepancy in the accuracy of the other instrument or test equipment being compared with the certified standard. CANVAS — A heavy, closely woven cloth of linen, cotton, or synthetic fiber. CARRYING CASE — An assembly that encloses and protects packaged equipment. Also used to facilitate transporting packaged equipment. CASING (SLEEVE) — The outer woven cover of the suspension line. CAUTION — An insertion in the text of a technical order when an operating procedure, practice, etc., if not strictly observed, could result in damage to or destruction of equipment.

Glossary 2

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 CHANGE — Any alteration or modification to a prescribed technical order. Also, a document and/or publication issued by the final approving authority to correct or revise the contents of a technical order. The word CHANGE must appear on the document cover sheet. CLEVIS — A U-shaped metal fitting with a hole in each end to receive a pin or bolt. CLIP — A device which fastens, holds together, or retains. COMPONENT — Item of equipment making up part of an assembly. For example, an inflator assembly is a component part of a life preserver assembly. CONE, LOCKING — A small, smooth, cone-shaped metal post sewn to the flaps of the container. The cone has a horizontally drilled hole a short distance from the top to admit a temporary locking pin or the ripcord pin. CONFIGURATION — The functional and/or physical characteristics of hardware/software as set forth in technical documentation and achieved in a product. CONTAINER — See CARRYING CASE CONTRACTOR DATA — Data relating to equipment designed specifically for the Air Force. The data differs from commercial-type data in that equipment and data are neither available nor used in the commercial market. Contractor data usually consists of documents, pamphlets, or instructions, and contains technical information. The data may consist of, but is not limited to, specifications, schematics, wiring diagrams, drawings, and checklists. CONTRASTING COLOR — A color which stands out from its background. CORDS, CLOSING — Cords, made of type I nylon cord approximately 18 inches in length, used as an aid in the closing of a pack. CROSS BOX — A sewing pattern. CROSS SEAM — See SEAM, DIAGONAL. CYCLE — An interval of time during which a sequence of inspections are performed.

D D-RING — A metal fitting shaped in the form of a letter D. DART — A short, tapered seam. DATA — The means of communicating concepts, plans, descriptions, requirements, and instructions relating to technical projects, material, systems, and services; may include specifications, standards, engineering drawings, associated lists, manuals, and reports, including scientific and technical reports; may be in the form of documents, displays, sound records, punched cards, and digital or analog data. DEFORMATION — Alteration of form or shape.

Glossary 3

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 DEPOT LEVEL MAINTENANCE — That category of maintenance actions normally including: inspection, test, repair, modification, alteration, modernization, conversion, overhaul, reclamation, or rebuild of parts, assemblies, subassemblies, components, equipment end items, and weapons systems; the manufacture of critical non-available parts; and technical assistance to maintenance activities. Depot level maintenance is the responsibility of, and is performed by, designated maintenance activities, to augment stocks of serviceable material. DETAIL PART — See COMPONENT. DIAMETER — The greatest straight distance across a circle. DIP — A line or group of lines passing through a group of lines. DOUBLE-W — A sewing pattern.

E ELASTIC WEBBING — See WEBBING, ELASTIC. END OUT (MISSING END) — A warp yarn missing for a portion of or the entire length of cloth. EQUIPMENT MAINTENANCE — The sustaining of material in an operational status, restoring it to a serviceable condition, or updating and upgrading its functional utility by modification. EQUIVALENT — A part, material, tool, or consumable product that is equal in performance and characteristics than that specified. EXPLODED VIEW — An isometric view of hardware or equipment that is shown disassembled with the interconnecting parts in the same order as when fully assembled. Axis lines are used to indicate the interconnection of the parts. EYE — A small, steel-wire loop. EYELET — A small metal reinforcement for a hole in cloth; similar to a grommet, except thinner and smaller and having no washer. The eyelet is used to reinforce lacing holes in small covers, etc.

F FAILURE — The termination of the ability of an item to perform its required function. FASTENER, DIRECTIONAL — A snap fastener which can be engaged or released in only one direction. FASTENER, NONDIRECTIONAL — A snap fastener which can be engaged or released by applying pressure or pull from any angle. FASTENER, SLIDE — A type of fastener made of two lengths of tape with a series of metal or plastic scoops fastened to one side of each. A metal slide is provided which causes the scoops to mesh or lock in place as the fastener is closed or to separate as the fastener is opened. Colloquial: ZIPPER. FELT — A cloth made from wool, fur, hair, synthetic fiber, or a mixture of these with cotton. It is made by matting the fibers together under pressure and heat.

Glossary 4

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 FERRULE — A cap or ring used to finish the end of a housing; for example, the finished ends of a ripcord housing. FIBER — A natural or synthetic filament (as a wool, cotton, rayon, etc.) capable of being spun into yarn. FID — A small, flat hand tool of metal or wood used during the packing process to straighten end flaps and to insert corner flaps into a finished pack. FILLING — Threads which are perpendicular to selvage edges and extend across the width of cloth. FITTING, SWAGE — A connection, adapter, or pin which is fastened to a cable by pressure. It is applied by means of a machine which compresses the fitting, causing it to tightly grip the cable or wire to which it is being attached. FLAP, CORNER — One of the small, rectangular cloth tabs which are part of the pack side closing flaps and act as protection and reinforcement of the pack corners when equipment is packed. FLAP, END CLOSING — A cloth extension on each of the short sides of the pack base which folds over to enclose the equipment. FLAP, SIDE CLOSING — A cloth extension on each of the long sides of the pack base which folds over and encloses the equipment. FLARING — The process of opening or widening; for example, the method of splitting, taping, and stitching the ends of webbing in order to widen and prevent it from slipping through an adapter. FLOAT — A place in material where warp or filling yarns extend unbound over threads with which they should be woven. FLOAT, MULTIPLE — A place in cloth where a series of floats extend 3/16 inch or more. FOLDER — A device used as an attachment to a sewing machine to guide and fold cloth. FRAME, PACK — The framework used to stiffen and hold the pack in shape. FRAY/FRAYING — To rub, wear (as on the edge of cloth) by or as if by separating the threads at the edge. To wear out or separate into shreds, raveling in place or worn spot. FUNCTION — That action which must be performed by an element or elements of the system in order for the system to accomplish its intended purpose. FUNCTIONAL INSPECTION — An inspection that puts an item to use to determine if it operates properly.

G GRIP, RIPCORD — The handle secured to the ripcord cable and retained in a pocket located on the harness or container. Pulling of the grip begins the process of manual deployment of equipment. GROMMET — A metal eye and washer used to reinforce a hole in material; for example, grommets on container side flaps.

Glossary 5

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

H HANDLE, RIPCORD — The handle secured to the ripcord cable and retained in a pocket located on the harness or container. Pulling of the handle begins the process of equipment opening. HARDWARE — The generic term dealing with physical items of equipment, tools, implements, instruments, devices, sets, fittings, trimmings, assemblies, subassemblies, components, parts, raw materiel, etc., as opposed to specifications, drawings, funds, personnel, or services. HARNESS — An arrangement of webbing straps used to attach equipment. HARNESS MAINSLING — The main load-carrying member of the harness. Formed by two lengths of webbing. HEAT SEAR — Use a heating device to fuse the end of nylon cord to prevent unraveling. HEALTH HAZARDS PRECAUTION DATA — Pre-cautionary statements placed in technical orders when hazardous chemicals or adverse health factors in the environment or use of the equipment cannot be eliminated. HEAVY BAR OR PLACE — An area on cloth where pick count varies from normal count. See also PICK. HEM — A border or reinforced edge formed by folding cloth back and securing it usually by sewing. HESITATOR LOOP — See LOOP, HESITATOR. HOLE, CLOTH DAMAGE — Three or more warps and/or filling threads broken at the same location. HOOK, PACKING — A special hook used to draw lines into place in hesitator loops. HOOK, TAPE — See TAPE, HOOK.

I IAW — In Accordance With. ILLUSTRATED PARTS BREAKDOWN (IPB) — Illustrations and part numbers for all parts of the applicable hardware. The IPB contains information needed for ordering parts, identifying parts, and arranging parts in SM&R codes, and Usable On codes. INNER CORE — Five to nine internal yarns (number depending on type) for lines which are covered by a woven sleeve or casing. INSPECTION — A close examination for damage, wear, and dirt. Also, regularly scheduled examination of equipment assemblies. ITEM — A generic term to denote a system, segment of a system, subsystem, personnel subsystem, software, equipment, component, part, etc.

Glossary 6

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

K KEEPER — Small strip of tape or loop used to retain an object. KEEPER, CORNER — See FLAP, CORNER. KIAS — Knots Indicated Air Speed. KNOT, BINDER — The simplest method of joining two threads or lines. The two ends are placed side-by-side and a simple overhand knot is then tied in both lines simultaneously. It will not slip when drawn tightly. Also called a thumb knot.

Glossary 7

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 KNOT, BOWLINE — A knot formed by making a small overhand loop a desired distance from the end of the line. The end of the line is then passed through the loop from the underside of the main part of the line and back through the small loop. When this knot is drawn tight, it will not slip but still can be easily untied.

KNOT, CHINESE FINGER — A knot formed by folding the free end of a line over and pulling into itself with a telescoping tool. KNOT, CLOVE-HITCH — A knot formed by making one turn around a post, bringing the end across the line, continuing around the post a second time and passing the end under the second loop.

Glossary 8

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 KNOT, DOUBLED OVERHAND — Similar to an overhand knot, except free end of line to be knotted is folded over; then folded end is tied in same manner as overhand knot so that a loop is formed in end of line. KNOT, HALF-HITCH — A knot formed by passing a cord or line around an object, then passing the free end around the main part of the cord and bringing the free end up through the loop thus formed.

KNOT, FIGURE-EIGHT — A knot formed by making a larger knot than would be formed by an overhand knot at the end of a rope. A figure-eight knot is used in the end of a rope to prevent the ends from slipping through a fastening or loop in another rope. To make the figure-eight knot make a loop in the standing part, pass the running end around the standing part back over one side of the loop and down through the loop. The running end can then be pulled tight.

Glossary 9

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 KNOT, LARK’S HEAD — A knot formed around an attachment ring or bar by passing the free ends of the line around the bar or through the ring and then through a loop or bight in the line.

KNOT, OVERHAND — A simple knot tied in the end of a line by forming a loop and passing the end over and down through the loop.

Glossary 10

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 KNOT, SLIP HITCH — Pass free end of nylon cord through the sea anchor loop. Form a small loop with the standing end. Form a smaller loop with the free end and pull it around and through the first loop. Leave part of the free end exposed as a pulled tab. Holding the standing end and the free end, pull the standing end loop snug against the free end loop.

KNOT, SQUARE — A knot formed by passing the end of the cord in the left hand over and under the end in the right hand and then reversing the process by passing the end in the right hand over and under the one in the left hand.

Glossary 11

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 KNOT, SURGEON’S — The surgeon’s knot is similar to the square knot, except that the first overhand tie is wrapped twice around the cord or line.

KNOT, SURGEON’S, AND LOCKING OVERHAND — The surgeon’s knot followed by a locking overhand knot is used to tie off most tackings.

KNOTS, SLIP — To tie, hold one end of the cord in the left hand, then make an overhand loop in the standing part and pull a bight up through the loop. When tying this knot onto a rail or bar, put one end of the rope over the rail, then tie an overhand knot around the standing part. Pass free end of nylon cord through the sea anchor loop. Form a small loop with the

Glossary 12

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 standing end. Form a smaller loop with the free end and pull it around and through the first loop. Leave part of the free end exposed as a pulled tab. Holding the standing end and the free end, pull the standing end loop snug against the free end loop.

L LATERAL BAND — See BAND, LATERAL. LINE DRAWING — A drawing of an object as oppose to a photograph. A line drawing has no shading in halftones. LINE, STATIC — A line used to open an equipment assembly without the necessity of pulling a ripcord manually. A static line is attached to the ripcord and the aircraft or ejection seat. When the line becomes taut, it withdraws the ripcord locking pins or deployment bag. The assembly then opens. LOCK, RIPCORD PIN — The ripcord pin lock is used in conjunction with the ripcord pin pull test. The lock is designed in such a manner as to allow initial movement of the ripcord pins, but it does not permit them to totally disengage. LOCKSTITCH — A common sewing machine stitch formed when the thread in the needle goes through the material and connects with the bobbin thread. The needle and bobbin thread should lock in the center of the material thickness. (Refer to ASTM D6193, Type 301).

LOOP — A warp or filling thread pulled out to form a loop on a cloth surface. LOOP, HESITATOR — One of a series of webbing or tape loops that holds lines in an orderly position in the container and that pays the lines out in sequence for orderly deployment of the assembly. LOOP, RETAINING — Webbing or tape loop used to hold folded lines or excess webbing in position. LOOSE STITCHES — Thread that does not lie smoothly on the surface of the cloth. LOOP, STOW — A tape, webbing, or elastic band on a pack that holds lines in position during packing. Glossary 13

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 LUMP — An internal imperfection of a line that feels hard to the touch. It is usually caused by internal knots in core yarns or casings or by slippage or displacement of one or more inner core yarns near an overlap.

M MAIN LIFTWEB — See HARNESS, MAINSLING. MAIN SEAM — See SEAM, RADIAL. MAINTAINABILITY — A characteristic of design and installation which is expressed as the probability that, when maintenance action is performed in accordance with prescribed procedures and resources, a system or component will conform to specified conditions of utility within a given period of time. The operative period of time will be expressed, and may take a form in aggregate, such as man-hours per flying hour, clock hours to complete, or individually, as hours-to-repair, hours-to troubleshoot. MAINTENANCE — All actions taken to retain material in a serviceable condition or to restore it to serviceability. It includes inspection, testing, servicing, classification as to serviceability, repair, rebuilding, and reclamation. MAINTENANCE CAPABILITY — Availability of those maintenance resources, namely: facilities, tools, test equipment, drawings, technical publications, training maintenance personnel, engineering support, and availability of spare parts required to carry out authorized maintenance. MAINTENANCE LEVELS — The three basic levels of maintenance (organizational, intermediate, and depot) into which all maintenance activity is divided. The scope of maintenance performed within each level must be commensurate with the personnel, equipment, technical data, and facilities provided. MAINTENANCE TASK — The maintenance effort necessary for retaining an item in, or changing/restoring it to a specified condition. MAJOR COMMAND (MAJCOM OR MAJCMD) — The activity at the highest echelon responsible for management, command, and control of a system and/or equipment. For example, AETC. PACAF, AMC, USAFE, ACC, ANG, AFRC, etc. MARGIN — The space from the outer row of stitching to edge of fold of the cloth. MARQUISETTE — A sheer meshed fabric of leno weave. MATERIEL — All tangible items (including aircraft, missiles, communications-electronics-meteorological (CEM) systems, computers, and related spares, repair parts, and support equipment; but excluding real property, installations, and utilities) necessary to equip, operate, maintain, and support Air Force activities, without distinction as to its application for administrative or combat purposes. MAY — In technical orders the word “may” is used to indicate an acceptable or suggested means of accomplishment. MILDEW — A damaging fungus or mold which forms on cloth and leather. It is caused by dampness and the absence of fresh air and sunlight. MIS-PICK — An extra or incorrectly positioned filling thread. MISSING PICK — A filling yarn (pick) wholly or partially missing.

Glossary 14

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 MISSING STITCHES — A space between stitches in same row in which there is no thread. MISSION ESSENTIAL MATERIEL — a. That materiel which is authorized and available to combat, combat support, combat service support, and combat readiness training forces to accomplish their assigned mission. b. For the purpose of sizing organic industrial facilities, that service designated materiel authorized to combat, combat support, combat service support, and combat readiness training forces and activities, including Reserve and National Guard activities, which is required to support approved emergency and/or war plans, and where the materiel is used to: (1) destroy the enemy or the enemy’s capacity to continue war; (2) provide battlefield protection of personnel; (3) communicate under war conditions; (4) detect, locate, or maintain surveillance over the enemy; (5) provide combat transportation and support of men and materiel; and (6) support training functions, but is suitable for employment under emergency plans to meet purposes enumerated above.

N NAMEPLATE — A label attached to equipment, giving data as to type, model number, date of manufacture, date placed in service, etc. NATIONAL STOCK NUMBER (NSN) — A 13-digit numbering system used in identifying, managing, procuring, stocking, issuing, requisitioning, disposing, and accounting for items of supply. The NSN consists of a four-digit Federal Supply Classification (FSC) number and a nine-digit National Item Identification Number (NIIN). NEEDLE DAMAGE — Where needle penetration has damaged threads in the cloth. NOTE — An insertion in the text of a technical order when an operating procedure, condition, and so forth, is essential to highlight.

O OVEREDGE — The stitching around the outer edge of cloth to prevent the edges from raveling or fraying. OVERFOLD — An excess of material causing edge of inner fold to double, wrinkle, or pleat. OVERHAUL — The process of disassembly sufficient to inspect all the operating components and the basic end article, followed by repair, replacement, or servicing as necessary, followed by reassembly and bench check/operational/flight test. Upon completion of the overhaul process, the component/end article will be capable of performing its intended service life/service tour. OVERLAP — To extend over and cover a piece of cloth. OVERLAP, CORE — The overlapping of an incoming and outgoing suspension line inner core line. OVERTHROW STITCH — See STITCH, OVERTHROW.

P PACKING FID — See FID. PACKING HOOK — See HOOK, PACKING. PALM, SEWING — A hand protector which is used when sewing. Glossary 15

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 PANEL, END — See FLAP, END. PANEL, SIDE — See FLAP, SIDE. PARAFFIN — Wax generally used with 50 percent beeswax as a hot dip to prevent the fraying of cut ends of webbing, cord, and tape. See also BEESWAX. PERIODIC INSPECTION — A detailed, searching inspection for material degradation that may have occurred during the preceding calendar interval and provides an opportunity to perform essential preventive maintenance. PH VALUE — An indication of the acidity or alkalinity of a solution. A reading of pH may be made by the use of test strips. A reading below 7.0 indicates an acid; a reading above 7.0 indicates an alkaline. PICK — A cloth filling thread, taken as a unit of fineness of cloth. PILE TAPE — See TAPE, PILE. PILLING — To become rough with or mat into little balls, an extra set of yarn/thread that forms raised (little balls) loops. PIN, RIPCORD LOCKING — A small steel pin attached to a ripcord and passed through a locking cone to hold a container in a closed position. PIN, TEMPORARY LOCKING — A metal pin inserted through the eye of the locking cones to hold the side flaps in place until the ripcord pin is inserted. PINKING SHEARS — See SHEARS, PINKING. PLEAT — A fold sewn in cloth. POCKET, RIPCORD HANDLE — A small pocket of cloth or elastic webbing sewn to the harness (or container assembly). It holds the ripcord handle in position. POROSITY OF A FABRIC — The measured amount, in cubic feet, of the flow of air through a square foot of fabric in 1 minute under a specified pressure. Also known as PERMEABILITY. PREFLIGHT — An inspection conducted prior to each flight to ensure the equipment safe for use. PREMATURE OPENING — Any accidental opening of an equipment item which occurs prior to intended deployment. PRIOR TO ISSUE OR INSTALLATION INSPECTION — See Periodic Inspection. PROTRUDING YARN (CORE CASING OR THREAD) — A condition in which either the inner core yarns extend through the casing or the yarn or threads of the casing extend beyond the surface of the casing itself. PSIG — Pounds per Square Inch Gauge.

Glossary 16

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 PULLUP CORDS — Nylon cords of varying lengths used to pull up the sides and ends of the container flaps over the container cover and to pull the cones through the grommets. They are also used to pull lines into place in some types of containers. PUSHPIN — A straight pin used to temporarily secure material while sewing. PYRO-BOX — The container used to store pyrotechnic devices such as flares and cartridges while they are removed from the ammunition storage area. PYROTECHNIC DEVICE — Any device which burns or explodes or uses burning or exploding to operate a system.

Q QUALITY ASSURANCE — A planned and systematic pattern of actions necessary to provide adequate confidence that the item or product conforms to established technical requirements. QUALITY CONTROL — A management function whereby control of the quality of raw or production material is exercised for the purpose of preventing production of defective material. QUICK-CONNECTOR SNAP — See SNAP, QUICK CONNECTOR. QUICK-EJECTOR SNAP — See SNAP, QUICK EJECTOR.

R RAVEL (UNRAVEL) — To separate, untwist, or unwind, leaving a frayed or ragged edge. Ravel is the preferred word to describe such a condition. REEF — To route webbing, line, or cord through an adapter, buckle, harness fittings, etc. REINFORCEMENT — Any strengthening measure which enhances the basic integrity of a structure, joint, or assembly. See also WEBBING, REINFORCEMENT. REPAIR PARTS — Those consumable bits and pieces, i.e., individual parts or nonrepairable assemblies, required for the repair of spares or major end items. RESERVOIR — Cylinder used to store compressed air. RETAINER — Fabric container utilized to pack the life raft. RETAINER STRAP — Fabric straps utilized to container - a cylinder, pins, etc. RFI — Ready For Issue. RIG — To assemble and adjust; to equip. For example, the act of rigging a life raft assembly consists of assembling all component parts in preparation for packing. RING — See D-RING or V-RING.

Glossary 17

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 RIPCORD — A locking device which secures the packed equipment within the container and which effects the release of the equipment. The ripcord consists basically of locking pins, a flexible cable, and a handle. RUNOFF — Sewing not on a seam or cloth. RUPTURE — One or more yarns of line casing being cut or severed, sometimes exposing the inner core. Occasionally, tears, cuts, or other forms of damage are defined as a rupture when caused by dynamic load conditions.

S S-FOLD — A method of folding a line, cord, or folded equipment into S-shaped folds. SADDLE — That part of the main lift web of the harness which provides a seat or sling for the wearer. SAFETY TIE — Low strength thread which serves to inhibit accidental opening, discharge, or separation. The safety tie also indicates that an assembly has not been damaged, tampered with, or opened since the last inspection. SCHEDULED MAINTENANCE — Periodic prescribed inspection and/or servicing of equipment accomplished on a calendar, mileage, or hours-of-operation basis. Included in Preventive Maintenance. SCRAP — To discard, with proper authorization, items, parts, or materials which are obsolete or no longer usable. SEAM — A series of stitches joining two or more pieces of cloth. For government work, the type of seam is indicated by a symbol which gives the class of seam, the number of stitches, and the number of rows of stitching. (Refer to ASTM D6193) SEAM, ENGLISH-FELL — A seam in which one piece of cloth is folded back upon itself and the other piece is a plain overlap. SEAM, FOUR-NEEDLE FOUR-STITCH — A method of stitching which can be performed in one operation by a fourneedle sewing machine. SEAM, FRENCH-FELL — A seam in which the cloth is folded back upon itself and stitched. SEAM, OVERLAP — A seam in which two pieces of cloth are joined by overlapping enough to accommodate one or more rows of stitching. SEAM, TWO-NEEDLE TWO-STITCH — A seam in one operation by a two-needle sewing machine. SEAR — To melt or seal with heat; for example, to heat the end of nylon webbing until the nylon melts and fuses. This prevents raveling. SECURITY — An item firmly, positively, and safely attached in the authorized manner. SELVAGE — An edge of a woven fabric so formed as to prevent raveling, as compared to a cut edge, which will ravel. SELVAGE, BROKEN — Cut, broken, or torn selvage edge. SERVICEABLE — A condition of an end item in which all requirements of repair, bench check, overhaul, or modification, as applicable, have been accomplished, making it capable of performing the function or requirements for which it was Glossary 18

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 originally designed. The fact that signs of previous usage are apparent does not necessarily mean that it is unserviceable. When appearance is not a primary consideration, and the condition of the item meets all safety and performance requirements, it will be processed as serviceable. SERVICING — The work required in the immediate work area to replenish consumables needed to keep an item in operating condition, providing such replenishment is not an essential part of a corrective or preventive maintenance job. SERVICE LIFE — The time period during which an item can be maintained in service without replacement. SERVING, FRENCH SPIRAL — A series of turns and half-hitches using cord, line, etc., wound tightly around rope, braided line, etc., to bind it together. It has many uses but is generally giving way to other methods (i.e., machine sewing) because of the time consumption of this handwork.

SEWING MACHINE — A machine with a powerdriven needle, used for sewing and stitching. SHALL — In technical orders the word “shall” is to be used to indicate a mandatory requirement. SHEARS, PINKING — Shears with a saw-toothed inner edge on the blades for making zigzag cuts. SHELF LIFE — The total period of item beginning with the date of manufacture, cure, assembly, pack (subsistence only) or inspect/test/restorative action that an item may remain in the combined wholesale (including manufacturers) and retail storage systems and still remain suitable for issue to and/or consumption by the end user. Shelf life should not be confused with service life, which is a measure of anticipated average or mean life of an item. SHOULD — In technical orders the word “should” is used to indicate a nonmandatory desire or preferred method of accomplishment. SKIPPED STITCHES — Threads that are not interlocked. SLIDE FASTENER — See FASTENER, SLIDE. SLUB — An abruptly thickened place in cloth caused by manufacturer’s defect. SMASH — Abrasion damage which causes broken warp and filling threads and weave separation. SNAG — Same as thread separation except more severe and distorted. SNAP, QUICK-CONNECTOR — A large, hook-shaped, spring-loaded snap.

Glossary 19

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 SNAP, QUICK-EJECTOR — A harness snap that attaches to the V-ring to secure two parts of the harness together. The ejector arm releases the V-ring when the finger-grip lever is pulled outward. SPARES — Repairable components or assemblies used for maintenance replacement purposes in major end items of equipment. They are identical to or interchangeable with the end articles and are procured over and above the quantity needed for initial installation for support of the system/equipment. STATIC LINE — See LINE, STATIC. STIFFENER, PACK — A piece of metal or fiberglass or phenolic fiber placed in the pack to stiffen the flaps. These strips are also used for stiffening and shaping. STITCH, BACK — See BACKSTITCH. STITCH, BASTING — A long loose stitch made with single or double thread. Use to temporarily hold two or more pieces of material. STITCH, BOX — Rectangular stitch used to attach and reinforce. STITCH, BUTTONHOLE — A reinforced stitch, made on the edge of a slit or hole. Each individual stitch forms a half-hitch. The distance from the edge and the spacing of the stitches are determined by the type of material used. STITCH, DOUBLE-W — See DOUBLE-W. STITCH, LOCKING OR LOCK — See LOCKSTITCH. STITCH, OVERTHROW — A stitch used to repair weakened seams, to reinforce slide fasteners, and to join two pieces of material together.

Glossary 20

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 STITCH, ZIGZAG — A stitch made by sewing machine which stitches alternately on two or more parallel lines; for example, it is used to reinforce and anchor lines. The number of stitches per inch is determined by counting the number of points on one side per linear inch. (Refer to ASTM D6193, Types 304 and 308).

STITCHES PER INCH — The number of needle penetrations where threads are interlaced per linear inch. STOWING — The act of putting away in a neat, orderly way. Stowing of lines involves inserting the lines into the retainer loops in such a way as to ensure proper paying out of lines when the equipment is opened. STRAP, CHEST — The harness webbing which is secured across the chest with a snap and a V-ring to prevent the wearer from falling out of the harness. STRAP, DIAGONAL BACK — See STRAP, SHOULDER. STRAP, HORIZONTAL BACK — An adjustable part of harness webbing extending across the small of the wearer’s back. STRAP, SHOULDER — The part of the harness webbing which crosses the wearer’s back at the shoulder blades. STRIP BACK. — Broken thread filaments wrapped around the remaining thread forming an enlarged area on cloth. SURVEY — A formal process by which flotation equipment or other accountable equipment is withdrawn from service or removed from records. SWAGE — To attach a device to a cable by means of pressure. A swaging machine compresses a fitting, causing it to grip tightly to the cable to which it is being attached.

Glossary 21

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252

T T-HANDLE RIPCORD — A handle in the shape of the letter T. Anti-windblast handle. TACK (HAND TACK) — To attach temporarily prior to final sewing, to tie temporarily as an aid in positioning, or to permanently secure portions of equipment together. TAPE — A narrow woven ribbon of cotton, linen, nylon, or other material. TAPE, FILAMENT — An adhesive tape with fiber cords in the backing. The cords are usually fiberglass, nylon, linen, or other high-strength material. This tape has high tensile strength along the lengthwise direction. TAPE, HOOK — Strip of nylon tape with small nylon hooks on one side. Hook tape is used with pile tape as a fastener. TAPE, PILE — A strip of nylon tape with small nylon loops on one side. Pile tape is used with hook tape as a fastener. TEAR STRENGTH — The average force, expressed in pounds, required to continue a tear across either the filling or warp of cloth. TECHNICAL ORDER (TO) — A military order of a technical nature issued in the name of the Chief of Staff, USAF, and by order of the Secretary of the Air Force. It provides technical information and instructions to operate, install, maintain, inspect, or modify Air Force systems and equipment items. They are publications described and distributed in TO 00-5-1, which are distributed according to TO 00-5-2. Types of TOs authorized are: Technical Manuals (TM); Methods and Procedures Technical Orders (MPTO); Time Compliance Technical Orders (TCTO); Index Technical Orders; Abbreviated Technical Orders; Preliminary Technical Orders (PTO); Joint Nuclear Weapons Publications. TECHNICAL ORDER COMPLIANCE (TOC) — That state in which, in accordance with a USAF Technical Order or other military department orders, an otherwise serviceable article must be processed by a maintenance activity for inspection, calibration, test, modification, change, or alteration prior to shipment, issue, installation, or preparation for initial or continued storage or use. TEMPLATE — A pattern or Gauge, commonly in the form of a thin plate of cardboard, wood, or metal. It is used as a guide in the layout or cutting of flat work. TEMPORARY LOCKING PIN — See PIN, TEMPORARY LOCKING. TENSILE STRENGTH — The greatest stress cloth can withstand along its length without rupturing, expressed as a number of pounds per square inch (of cross-section). TENSION STRAP — See STRAP, TENSION. THREAD, SEPARATION — A bunching of threads in cloth, leaving a hole or separation in the cloth. A thread separation can run either with the warp or the filling of a cloth. TIE, RIPCORD PIN RETAINING — A low-strength thread or cord used specifically to prevent ripcord pins from creeping and possibly causing inadvertent opening. TIGHT STITCHES — Thread under excess tension causing one sewing thread to lie on the surface of the cloth or causing puckering of the cloth.

Glossary 22

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 TIME COMPLIANCE TECHNICAL ORDER (TCTO) — A type of TO which sets forth instructions for accomplishing a modification to equipment, performing or initiating special one-time inspections, or imposing temporary restrictions on aircraft flight, missile launch, or usage of airborne, ground communications electronics equipment and support equipment. TORQUE — A force or combination of forces that tends to produce a rotating or twisting motion. Torque is often expressed in pound-inches or pound-feet. A torque wrench is used to apply a measured torque. TUBULAR WEBBING — See WEBBING, TUBULAR. TRAINING EQUIPMENT — All types of maintenance and operator’s training hardware, devices, visual audio training aids, and related software which are used to train maintenance and operator personnel by depicting, simulating, or portraying the operational or maintenance characteristics of an item, system, or facility, and must, by their nature, be kept consistent in design, construction, and configuration with such items in order to provide the required training capability. TWIST OF THREAD OR CORD — The direction (right or left) in which the strands of thread or cord are wound around one another. If the thread unwinds when turning it to the left, it is right twist; if it tightens, it is left twist. Right twist is also known as Z-twist. Left twist is also known as S-twist.

U UNDERFOLD — Insufficient cloth folded inside a seam. The raw edges of cloth will show when underfold is excessive. UNEVEN STITCHING — Stitching wavy or number of stitches varying. UNSCHEDULED MAINTENANCE — Those unpredictable maintenance requirements that had not been previously planned or programmed but which require prompt attention and must be added, integrated with, or substituted for previously scheduled workloads. UNTACK — To remove a tacking.

V V-RING — Metal fitting shaped in the form of a closed letter V. For example, V-rings used with quick-ejector snap fittings secure a harness assembly on a wearer.

W WARNING — An insertion in the text of a technical order when an operating procedure, practice, etc., if not correctly followed, could result in personnel injury or loss of life. WARNING FLAG — A tag attached to an assembly indicating that the assembly is not operational. Often the flag is attached to safety pins on pyrotechnic devices to indicate necessity of removal before operation. Also, it is used to flag defective or incomplete equipment to preclude use. WARP — The threads that run parallel to the selvage edge of cloth; those that are crossed by the filling threads. WAX, PARAFFIN — See PARAFFIN. WEAVE — To manufacture a web or cloth on a loom by interlacing the warp and filling yarns. Also, the particular pattern employed in weaving cloth. Glossary 23

AIR FORCE TO 14S-1-102-21 ARMY TM 1-4220-252 WEAVE SEPARATION — Looseness of weave caused by strain or poor weaving. WEB (WEBBING) — A strong, narrow, closely woven tape of synthetic, cotton, or linen fiber designed for bearing weight. WEBBING, ELASTIC — A webbing having elastic warp threads to give it greater elasticity than regular webbing. It is used in the fabrication of elastic ripcord pockets. WEBBING, REINFORCEMENT — Short lengths of webbing sewn to the skirt hem at junction points. WEBBING, TUBULAR — Strong synthetic or natural fiber webbing woven in the form of a tube. WHIPPING — A method of wrapping or binding the ends of cord or line to prevent unraveling.

WHIPSTITCH — A stitch used to join two pieces of webbing and to reinforce weak seams. WHISKER — A thread filament protruding from cloth. WILL — Will may be used to express a declaration of purpose.

Y YARN SLIPPAGE — Thread separation.

Z ZIGZAG STITCH — See STITCH, ZIGZAG.

Glossary 24

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Felt Pattern, Valve Protector Cover

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FO-2.

Cloth Pattern, Valve Protector Cover

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