11W1-12-4-32-WA-1.pdf

TO 11W1-12-4-32

TECHNICAL MANUAL

WORK PACKAGE

INTERMEDIATE MAINTENANCE

INSTRUCTIONS

WITH ILLUSTRATED PARTS BREAKDOWN

M61 AND M61A1 20 MM AUTOMATIC GUNS

PN 7268702

PN 7791641

F42620-00-D-0038

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 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 E - Distribution authorized to DoD Components only (Critical Technology) (2 August 2012). Other requests shall be referred to 406 SCMS/GUEE Robins AFB, GA 31098. Questions concerning technical content shall be referred to AFLCMC/EBHAME.

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 Secretary of the Air Force

8 JUNE 2010 CHANGE 3 - 5 OCTOBER 2014

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

Dates of issue for original and changed pages are:

Original. . . . . . . .0. . . . . . . .8 June 2010 Change . . . . . . . . 1 . . . . . . 2 August 2012

Change . . . . . . . . 2. . . . . . . .4 May 2014 Change . . . . . . . . 3 . . . . . 5 October 2014

TOTAL NUMBER OF PAGES IN THIS PUBLICATION IS 218, CONSISTING OF THE FOLLOWING:

Page *Change No. No.

Page *Change No. No.

Page *Change No. No.

Title A i ii Blank iii - v vi

TO 11W1-12-4-32

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 DESTROY SUPERSEDED PAGES.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.

* Zero in this column indicates an original page.

A Change 3 USAF

NUMERICAL INDEX OF EFFECTIVE WORK PACKAGES

NOTE

Only those work packages and subordinate work packages assigned to this manual are listed in this index, therefore WP/SWP numbers may not be sequential. Insert Change No. 3, work packages and subordinate work packages, dated 5 October 2014. Dispose of superseded work packages and subordinate work packages. If change pages are issued to a work package or subordinate work package, insert the changed pages in the applicable work package or subordi-nate work package. The portion of the text affected in a change or revised WP or SWP is indicated by change bars in the outer margin of each column of text. Changes to illustrations and diagrams are indicated by pointing hands or shaded areas.

WP/SWP

No.

Change No.

Model Application Title

001 00 0 ALL Alphabetical Index 002 00 2 ALL Foreword 003 00 2 ALL Master List of Special Tools, Test Equipment, and Consumables 004 00 2 ALL Packaging and Pre/Post Assembly Checkout 005 00 0 ALL Checkout and Analysis 006 00 3 ALL Maintenance Procedures 998 00 0 ALL Illustrated Parts Breakdown

Change 3 i/(ii blank)

SAFETY SUMMARY

1 GENERAL SAFETY INSTRUCTIONS.

This manual describes physical and chemical processes, which may cause injury or death to personnel, or damage to equipment if not properly followed. This safety summary includes general safety precautions and instructions that must be understood and applied during operation and maintenance to ensure personnel safety and protection of equipment. Prior to performing any task, the WARNINGs, CAUTIONs and NOTEs included in the task shall be reviewed and under-stood.

1.1 Handling Hazardous Materials. Procedures con-

tained in this manual may involve the handling of hazardous materials (HAZMAT). The user of this manual shall obtain the Material Safety Data Sheets (MSDS), Occupational Safety and Health Act (OSHA) Form 20 or equivalent form from the manufacturers or suppliers to be used. The user must become completely familiar with the manufacturer/sup-plier information and adhere to the procedures, recommen-dations, warnings, and cautions of the manufacture/supplier for the safe use, handling, storage and disposal of these ma-terials.

1.2 Safety Training. The safety requirements contained

herein will be complied with during all operations. All per-sonnel engaged in operations involving hazardous materials shall be thoroughly trained in safety. They shall be capable of recognizing hazardous situations and conditions. Thinking safety and working safely must become a habit when work-ing with or near items that can create a hazard due to their flammable, toxic, or other characteristics.

1.3 Eliminating Hazards. Lack of safety requirements in

this technical manual does not mean that safeguards are not needed. Prompt action will be taken to control any hazard. If a danger is encountered, all operations in the immediate area will be shut down. Supervisory personnel will be called for help in eliminating hazard. Operations will not be resumed until hazard has been eliminated.

2 WARNINGS, CAUTIONS, AND NOTES.

WARNING, CAUTION, and NOTE 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), or when essential to highlight a practice (NOTE). A WARNING, CAUTION or NOTE will apply each time the step to which it refers is repeated. Prior to starting any task, the WARNINGS, CAU- TIONS, and NOTES for that task will be reviewed and un-derstood. Refer to the materials list table at the beginning of the appropriate work package for material used during main-tenance of this equipment. The detailed warnings for hazard-ous materials are listed separately in the safety summary in the Hazardous Materials paragraph. Other warnings, cau-tions, and notes which appear in this manual are not listed separately in this safety summary, and are defined as fol-lows:

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

Highlights an essential operating or maintenance procedure, practice, condition, statement, etc.

which if not strictly observed, could result in dam-age to, or destruction of, equipment or loss of mis-sion effectiveness.

NOTE

Highlights an essential operating or maintenance procedure, condition, or statement.

3 HAZARDOUS MATERIALS WARNINGS.

Hazardous Material Warnings are provided through use of Hazard Symbols listed below. Consult the HAZARDOUS MATERIALS DESCRIPTION below or Material Safety Data Sheets (MSDS) Occupational Safety and Health Administra-tion (OSHA) Form 20 or equivalent for specific information on hazards, effects and protective equipment requirements. If you do not have an MSDS for the material involved, contact your supervisor, or base Safety or Bioenvironmental Engi-neering Offices.

iii

3.1 Hazardous Materials Icons. The following icons are

used throughout Air Force technical manuals to indicate the use of hazardous materials.

The symbol of drops of liquid onto a hand shows that the material will cause burns or irritation of skin or tissue.

The symbol of a per-son wearing goggles shows that the mate-rial will injure your eyes.

The symbol of a flame shows that the mate-rial can ignite and cause burns.

The symbol of a skull and crossbones shows that the mate-rial is poisonous or is a danger to life.

The symbol of three circular wedges shows that the mate-rial emits radioac-tive energy and can injure human tissue.

The symbol of a hu-man figure in a cloud shows that vapors of a material present a danger to life or health.

3.2 Hazardous Materials Description. The following de-

tailed HAZMAT warning pertain to materials or substances used in connection with procedures called out or described in this technical manual. Use these advisory warnings and their associated precautions in conjunction with the current MSDS for each material or substance. If there is conflict between this safety summary and the MSDS, the MSDS takes precedence. Only the icons, material name, and refer-ence number are used in the text of this manual. If a full description of the hazardous material is required while per-forming procedures in this manual, use the reference number to locate the appropriate description below.

ALCOHOL, ISOPROPYL, TT-I-735, GRADE B

COMPOUND, SEALING, POLYSULFIDE, TYPE II,

CLASS B, MIL-S-8802 ENAMEL, ALKYD, LOW

VOC, TT-E-527D 1

Toxic and flammable. Avoid contact with skin and eyes. Use in a well ventilated area and avoid breathing vapors. May be fatal if swallowed. Keep away from heat, sparks, and flame.

Store in a clean, cool, well ventilated area away from igni-tion sources and oxidizing agents. Keep containers tightly closed when not in use. Protection: butyl gloves and chemi-cal goggles; faceshield and protective clothing required when splashing is possible or expected; halfmask respirator with organic vapor cartridge required in poorly ventilated areas.

COMPOUND, CLEANING, AMS-C-83873 AND

MIL-C-29602, TYPE I OR TYPE II 2

Avoid skin and eye contact. Use only in well ventilated area.

COMPOUND, AIRCRAFT CLEANING, MIL-C-

87937, TYPE II 3

Aircraft Cleaning Compound, MIL-C-87937, Type II, is a skin and eye irritant. Avoid contact with skin and eyes. Wash hands thoroughly after each use. Avoid breathing vapors.

Launder contaminated clothing before reuse. Store in cool, dry, well ventilated and low fire risk area. Protect from heat, shock, and friction. Keep containers closed when not in use.

Avoid contact with strong acids or oxidizing agents. Protec-tive: rubber gloves, chemical, goggles, faceshield, and pro-tective clothing; halfmask respirator with organic vapor car-tridge required in poorly ventilated areas.

iv

SOLVENT, DEGREASING, MIL-PRF 680 4

Degreasing solvent, MIL-PRF-680, Type II, is a toxic and flammable. Avoid contact with skin and eyes. Avoid breath-ing vapors. Use with adequate ventilation. Keep away from heat, sparks, and flame. Avoid contact with strong oxidizing agents. Protection: butyl gloves and chemical goggles;

faceshield and protective clothing required when splashing is possible or expected; halfmask respirator with organic vapor cartridge required in poorly ventilated areas.

BORE CLEANER, RIFLE, MIL-PRF-372D 5

Skin, eye and respiratory irritant, and is flammable. Avoid contact with skin and eyes and use only in well ventilated areas. Remove all sources of ignition.

LUBRICANT, SOLID, MIL-L-46147 OR MIL-L-

23398 MINERAL SPIRITS, TT-T-291 6

Toxic and flammable. Avoid contact with skin, eyes, and clothing. Do not inhale vapors or mist. Wash hands thor-oughly after each use, contains small amount of lead, which is poisonous. Keep away from heat, sparks, and flames; va-pors can flow to ignition sources and flash back. Avoid con-tact with oxidizers and strong acids. Store in a cool, dry area. Protection: rubber gloves and chemical goggles.

COMPOUND, SEALING, MIL-S-8516 7

Toxic; avoid contact with skin and eyes. Avoid breathing vapors. Wash hands thoroughly after each use. Keep away from heat and flames. Protection: rubber gloves, chemical goggles, and protective skin compound.

GREASE, AIRCRAFT MIL-G-23827 OR MIL-G-

81322 8

An eye irritant and upon prolonged exposure, a skin irritant.

Product may contain chromium compounds, suspected car-cinogens. Keep away from flames, high temperatures, and oxidizing agents. Store in a cool, dry place. Protection: rub-ber gloves and chemical goggles.

LUBRICANT, TW25B/MC3000 9

A mild skin and eye irritant. Avoid extreme heat and open flames. Keep containers tightly closed and store in cool, dry place. Protection: rubber gloves and chemical goggles.

LUBRICANT, WEAPONS, MIL-L-46150 OR DOD-

L-86336 10

Toxic and skin, eye and respiratory tract irritant. Avoid con-tact with skin and eyes. Do not breath fumes/vapors/mist.

For skin or eye contact, flush with fresh water. Wash hands thoroughly after each use. Launder contaminated clothing before reuse. If ingested, drink milk or water: do not induce vomiting; seek immediate medical attention. Store in a closed container in a cool, dry, well-ventilated area away from heat, flames, and strong oxidizing agents. Protection: rubber gloves and chemical goggles.

SEALING COMPOUND, MIL-S-22473, GRADE C 11

A skin and eye irritant. Avoid prolonged contact with skin and eyes. Store below 120° F. Highly flammable and toxic.

Do not use near open flame or sparks. Use only in well ventilated areas.

v

COMPOUND, LUBRICANT, SILICON, 7397 12

Skin and eye irritant and is flammable. Keep away from sources of ignition. Use only in well ventilated areas.

OIL, LUBRICATING, MIL-L-63460 13

Toxic; eye and skin irritant. Avoid skin and eye contact. Wash hands thoroughly after each use. Keep away from heat and open flames.

BRULIN FORMULA 815GD 14

Hazard: Eye and skin irritant. Wear chemical goggles and gloves that are impervious to prolonged contact.

4 SAFETY PRECAUTIONS.

The following safety precautions shall be observed while performing procedures in this technical manual:

a. When an abnormal condition is noted and procedures in this manual do not specifically cover the abnormal condition, stop work. Call technically qualified person-nel for guidance before continuing work.

b. Personnel working with or near high voltage equip-ment should be familiar with modern methods of re-suscitation. Such information can be obtained from the base medical facility. Do not attempt internal service or adjustment of equipment unless another person ca-pable or rendering aid and resuscitation is present.

c. Do not wear rings, watches, or other metal jewelry while working on electrical equipment. Remove rings, watches, and other metallic objects that could cause shock or burn hazards.

d. Stay away from live circuits. Do not replace compo-nents or make adjustments inside equipment when power is turned on. To avoid injuries, always remove power. Adhere to all lockout/tagout requirements.

e. Personnel must be aware of the hazards associated with unguarded capacitors and energy sources. Lockout/ta-gout the energy source before performing maintenance adjustments or other procedures that would bypass safety guards, barriers, or otherwise expose personnel to hazardous energy sources.

f. Ensure that all external power sources have been checked for proper wiring and grounding.

g. Use an adequate number of personnel or an adequately rated lifting device to move equipment.

h. Any indoor operations involving painting and cleaning of items, other than stenciling and marking, will com-ply with the provisions of TO 42A-1-1.

i. Using compressed air can create an environment of propelled particles. Do not direct airstreams toward yourself or other personnel. Air pressure shall not ex-ceed 30 PSI and be used with effective chip guarding and personal protective equipment.

j. When using approved agents for minor cleaning opera-tions, personnel shall routinely use rubber gloves and chemical goggles and/or faceshield. Operations where splash hazards are likely, i.e., air pressure drying, brushing threaded fastener, etc., necessitate additional protection in the form of faceshields and aprons. If necessary, the bioenvironmental engineer or the base safety engineer should be contacted for guidance.

k. When spray painting, personnel shall refer to appropri-ate MSDS and/or bioenvironmental engineer for spe-cific protective equipment and ventilation require-ments.

l. Use extreme care when using cleaning agents. Clean-ing solvents are highly flammable and shall be used only in areas where adequate ventilation exists and fire or ignition sources do not exist. Use dangerous and toxic solutions and agents with approved adequate ventilation only. Avoid internal consumption, pro-longed breathing of vapors, or repeated skin contact.

All ventilation shall meet the requirements of AFOSH Standard 161-2.

m. When using cleaning fluids, use care to prevent satura-tion of electrical connectors. Saturating electrical con-nectors may cause failure of electrical circuitry.

n. When storing cleaning agents, maintain minimum quantities required to accomplish tasks. Agents shall be contained in approved safety containers. Consult the local bioenvironmental engineer and/or appropriate MSDS for specific protective equipment and ventila-tion requirements.

o. If fire occurs, evacuate the area and notify firefighting personnel.

vi Change 1

WORK PACKAGE

ALPHABETICAL INDEX

M61 AND M61A1 20 MM AUTOMATIC GUNS PN 7268702 AND

PN 7791641

EFFECTIVITY: ALL

LIST OF EFFECTIVE WP PAGES

Total Number of Pages in this WP is 2 consisting of the following:

* Zero in this column indicates an original page.

Page *Change Page *Change Page *Change No. No. No. No. No. No.

1. . . . . . . . . . . . . . . . . . . . . . . . . 0 2 Blank

ALPHABETICAL INDEX OF EFFECTIVE WORK PACKAGES

NOTE

Only those work packages and subordinate work packages assigned to this manual are listed in this index.

Subject WP/SWP Subject WP/SWP

ALPHABETICAL INDEX . . . . . . . . . . . . . . . . 001 00

CHECKOUT AND ANALYSIS . . . . . . . . . . . . . 005 00

FOREWORD . . . . . . . . . . . . . . . . . . . . . . . . . 002 00

ILLUSTRATED PARTS BREAKDOWN. . . . . . . 998 00

MAINTENANCE PROCEDURES . . . . . . . . . . . 006 00

MASTER LIST OF SPECIAL TOOLS, TEST

EQUIPMENT AND CONSUMABLES . . . . . . 003 00

PACKAGING AND PRE/POST ASSEMBLY

CHECKOUT . . . . . . . . . . . . . . . . . . . . . . . . 004 00

TO 11W1-12-4-32

WP 001 00

1/(2 blank)

FOREWORD

M61 AND M61A1 20 MM AUTOMATIC GUNS PN 7268702 AND

PN 7791641

EFFECTIVITY: ALL

LIST OF EFFECTIVE WP PAGES

Total Number of Pages in this WP is 16 consisting of the following:

* Zero in this column indicates an original page.

Page *Change Page *Change Page *Change No. No. No. No. No. No.

1. . . . . . . . . . . . . . . . . . . . . . . . . 2 4 2 - 3. . . . . . . . . . . . . . . . . . . . . . 0 5 - 16

TABLE OF CONTENTS

Paragraph Page Paragraph Page

1 ABBREVIATIONS AND ACRO-

NYMS

2 LIST OF APPLICABLE TECHNICAL

MANUALS

3 TIME COMPLIANCE TECHNICAL OR-

DERS

4 PURPOSE

5 SCOPE

6 ENVIRONMENTAL CONTROL

7 WARRANTY PROVISIONS

8 MANUAL STRUCTURE

9 WORK PACKAGE ARRANGE-

MENT

10 LOCATING INFORMATION

11 USE OF WORDS

12 LEADING PARTICULARS

13 MAINTENANCE CONCEPT

14 IMPROVEMENT REPORTS

15 DESCRIPTION INFORMATION

15.1 Physical Description

15.2 Functional Description

16 COMPUTER PROGRAM IDENTIFICA-

TION NUMBER (CPIN)

LIST OF ILLUSTRATIONS

Number Title Page Number Title Page

1 M61/M61A1 20 mm Automatic Gun (Typical)

2 Major Gun Components (Typical) 3 Rotor Assembly 4 Upper and Lower Housing Bodies and

Associated Parts (External View) 5 Upper and Lower Housing Bodies and

Associated Parts (Internal View)

6 Handoff of Round from Guide Bar to Breech Bolt

7 Breech Bolt Path During Firing Cycle

8 Breech Bolt in Unlocked and Locked Conditions

9 Case Ejection

TO 11W1-12-4-32

WP 002 00

Change 2 1

10 Breech Bolt Path During Clearing Cycle

LIST OF TABLES

Number Title Page Number Title Page

1 Leading Particulars

TO 11W1-12-4-32

WP 002 00

LIST OF ILLUSTRATIONS - CONTINUED

Number Title Page Number Title Page

FOREWORD

1 ABBREVIATIONS AND ACRONYMS.

This manual contains standard and nonstandard abbrevia-tions. Standard abbreviations are in accordance with ASME Y14.38.

Term Definition ACFT Aircraft AFI Air Force Instruction AFMAN Air Force Manual AFOSH Air Force Occupational Safety and Health ANSI American National Standards Institute AP Attaching Parts AR As Required CAGE Commercial and Government Entity DOD Department of Defense FSCM Federal Supply Code for Manufactures GAU Gun Automatic HAZMAT Hazardous Materials HEI High Explosive Incendiary HEIT High Explosive Incendiary Tracer Car-tridge HPT High Pressure Test Cartridge IPB Illustrated Parts Breakdown MPI Magnetic Particle Inspection MSDS Material Safety Data Sheet NDI Non-Destructive Inspection PGU Precision Guided Unit PN Part Number REF Reference Purposes SMR Source Maintenance and Recoverability

Code SPM Shots Per Minute STD Standard SWP Subordinate Work Package TCTO Time Compliance Technical Order TP Target Practice Cartridge TP-T Target Practices-Tracer VCI Vapor Corrosion Inhibitor WP Work Package

2 LIST OF APPLICABLE TECHNICAL MANUALS.

List of Related Publications

Number Title AFMAN 91-201 Explosive Safety Standard AFOSH STD-161-2 Industrial Ventilation

List of Related Publications - Continued

Number Title ANSI/J-STD-001B Standard for Soldered Elec-trical Assemblies ASME Y14.38 Abbreviations and Acronyms ASTM-1444 Standard Practice of Mag-netic Particle Inspection MIL-S-6872 Soldering Process, General

Specification For (Use

DD-STD 1866)

MIL-STD-454 Standard General Require-ments for Electronic Equipment

MIL-T-5021 Welding Operation Certifica-tion Standard

TO 00-5-1 Air Force Technical Order System

TO 00-35D-54 USAF Deficiency Reporting and Investigating System

TO 00-85B-3 How to Package Air Force Spares

TO 00-25-195 Source Maintenance and Recoverability Coding of Air Force Weapons, Sys-tems, and Equipments

TO 00-25-234 General Shop Practice Re-quirements for the Repair, Maintenance, and Test of Electrical Equipment

TO 1-1A-8 Engineering Manual Series Aircraft and Missile Re-pair Structural Hardware

TO 1-1-691 Aircraft Weapons Systems - Cleaning and Corrosion Control

TO 1-1A-14 Installation Practices for ACFT Electrical and Elec-tronic Wiring

TO 1F-15( )-4-3 IPB - Hydraulic and Envi-ronmental Control Sys-tems

TO 1F-15A-4-6 Aero Space Ground Equip-ment

TO 11W1-7-9-2 Field Maintenance and Over-haul Instructions - M2A1, M2A2

TO 11W1-7-11-2 Field Maintenance Ammuni-tion Handling System for 20 mm Automatic Gun 175F938

TO 11W1-12-4-32

List of Related Publications - Continued

Number Title TO 11W1-7-15-2 Intermediate Maintenance

Instructions - M161A1 20 MM Gun Accessory Feed and Storage System PNs 512L128, 634L826

TO 11W1-7-16-2 Maintenance Instructions with Illustrated Parts Breakdown Intermediate and Depot F-16 Aircraft Ammunition Handling Set Part Number 512L509

TO 11W1-7-17-2 Intermediate Maintenance Instructions - 20 MM Lin-ear Feed System- 634L826- Auto Lubrica-tion-175F479- (General Electric)

TO 11W1-28-3-2 Field Maintenance M7 Elec-tric Drive and M12 Hy-draulic Drive for 20 MM Automatic Gun M61

TO 33B-1-2 Nondestructive Inspection General Procedures and Process Controls

TO 42A-1-1 Safety, Fire Precaution and Health Promotion Aspects of Painting and Paint Re-moval

TO 44H1-1-117 General Installation of Heli- Coil Inserts

3 TIME COMPLIANCE TECHNICAL ORDERS.

None

4 PURPOSE.

This work package provides general safety precautions that users will understand and apply during operation and main-tenance of the Electrical Test Set to ensure personal safety and health, and the protection of DoD property.

5 SCOPE.

Instructions for storage, handling, inspection, maintenance, and preparation for use of Electrical Test Set Assembly (Fig-ure 1) is provided. When followed, these instructions will prevent accidents and incidents and provide for safe opera-tions. These operations may involve hazardous materials. The user will become completely familiar with the manufacture/ supplier information. Adhere to the procedures, recommen-dations, warnings, and cautions of the manufacturer/supplier for the safe use, handling, storage and disposal of these ma-terials. Obtain the Material Safety Data Sheets (MSDS), Oc-cupational Safety and Health Act (OSHA Form 20) or equivalent from the manufactures or supplier of material to be used.

6 ENVIRONMENTAL CONTROL.

None

7 WARRANTY PROVISIONS.

None

8 MANUAL STRUCTURE.

This manual is divided into Work Packages (WP). Each WP is an independent, task-oriented unit. Only essential informa-tion is provided. WPs cover the subjects of alphabetical in-dex; foreword; master list of special tools, test equipment, and consumables; in section requirements and procedures and cleaning, disassembly, and assembly; functional testing, and illustrated parts breakdown.

9 WORK PACKAGE ARRANGEMENT.

The Alphabetical Index (WP 001 00) provides a complete list of all WPs and SWPs.

10 LOCATING INFORMATION.

The Numerical Index of Effective Work Packages lists, in numerical order, all WPs and SWPs contained in this manual and provides the model application for each WP/SWP. The Alphabetical Index WP lists, in alphabetical order, all WPs and SWPs contained in this manual. Each WP contains a table of contents, which lists all procedures contained in that WP/SWP. References to Paragraphs, Tables, or Figures within a WP are made by number, e.g., Paragraph 7, Table 1, or Figure 1. A reference to another WP merely includes the WP or SWP number, e.g., WP 006 00 or SWP 006 01. To find a particular procedure or topic, it is necessary to refer to that WP or SWP.

11 USE OF WORDS.

The word “shall” is used in this manual to express a provi-sion that is mandatory. The words, “should” and “may” are used to express nonmandatory provisions. The word “will” is used to express a declaration of purpose, and can be used to describe future events.

12 LEADING PARTICULARS.

Table 1 provides information applicable to the M61 and M61A1 20 mm automatic gun.

TO 11W1-12-4-32

4 Change 2

Table 1. Leading Particulars

GUN

Rotation Counterclockwise viewed from breech end Drive External electric or hydraulic motor, or ram air turbine Caliber 20 mm Length Approximately 72 inches Diameter Approximately 15.5 inches Weight 252 pounds Solenoid operating voltage 28 VDC Solenoid resistance 1 ohm Firing voltage 250 to 400 VDC Rate of fire 2,500 to 7,200 shots per minute

BARRELS

Number of barrels 6 Length 60 inches Number of lands 9 Twists Right-hand gain twist AMMUNITION 20 MM electrical primed PGU-39 20 mm dummy PGU-28 High Explosive Incendiary (HEI) cartridge PGU-27 Target Practice (TP) cartridge PGU-30 Target Practice-Tracer (TP-T) M51 series (except chrome plated cases) 20 mm dummy M54E2 High Pressure Test (HPT) cartridge M55A1 Target Practice (TP) cartridge M55A2 Target Practice (TP) cartridge M56A1 with fuze M505 High Explosive Incendiary (HEI) cartridge M56A1E1 with fuze M505 High Explosive Incendiary (HEI) cartridge M56A1E1 with fuze M505A1E2 High Explosive Incendiary (HEI) cartridge M56A2 with fuze M505A1 High Explosive Incendiary (HEI) cartridge M56A2 with fuze M505A2 High Explosive Incendiary (HEI) cartridge M56A3 with fuze M505A2 High Explosive Incendiary (HEI) cartridge M56A3 with fuze M505A3 High Explosive Incendiary (HEI) cartridge M220 Target Practice-Tracer (TP-T) cartridge M242 High Explosive Incendiary -Tracer (HEI-T) cartridge T221E2 Armor Piercing Incendiary (API) cartridge

13 MAINTENANCE CONCEPT.

Maintenance consists of troubleshooting, fault isolation, dis-assembly, parts replacement, authorized repair, assembly, and checkout of mechanical and electrical components consistent with safe maintenance practices and TO 00-25-234 and TO 1-1A-14.

14 IMPROVEMENT REPORTS.

Recommendations for improvement to this TO will be sub-mitted on AFTO Form 22, Technical Order Improvement Report and Reply, in accordance with TO 00-5-1.

15 DESCRIPTION INFORMATION.

The following paragraphs provide physical and functional descriptions of the M61 and M61A1 20 mm automatic gun.

15.1 Physical Description. The physical description of

the gun and gun components are described in the following paragraphs.

TO 11W1-12-4-32

Figure 1. M61/M61A1 20 mm Automatic Gun (Typical)

Figure 2. Major Gun Components (Typical)

15.1.1 Gun Assembly. The gun assembly is an air cooled, six barrel weapon capable of firing 2,500 to 7,200 shots per minute (spm). The gun utilizes a rotary action mechanism, contained within a fixed rear housing assembly, and a rotat-ing barrel cluster. The major components of the gun are shown in Figure 2. An accessory automatic gun lubricator may be used to lubricate the gun. Ammunition and power to operate the gun are obtained from separate external sources.

The gun is designed to provide peak saturation firepower for various airborne and ground area and point weapon systems used for attack on, lightly armored aircraft, lightly armored personnel carriers, lightly armored and unarmored vehicles and surface craft, and personnel.

15.1.2 Muzzle Clamp Assembly. (Figure 2) The muzzle

clamp assembly is positioned at the outer end of the barrel cluster to retain barrel cluster and prevent movement of in-dividual barrels during gun firing.

15.1.3 Center Clamp Assembly. (Figure 2) The center

clamp assembly is positioned near the center of the barrels with the clamp tabs engaged in the slots of the stop shoul-ders on the barrels.

15.1.4 Barrels. (Figure 2) The gun incorporates six rifled

barrels in a cluster. Three rows of interrupted locking lugs on each barrel engage similar interrupted locking lugs on the rotor assembly to secure the barrels.

15.1.5 Recoil Adapter Assembly. (Figure 2) The recoil

adapter assemblies are mounted on the retainer assembly and provide the front mounting points for the gun. The recoil adapters reduce the magnitude of the recoil and counter re-coil forces transmitted to the supporting structure when the gun is fired.

15.1.6 Firing Contact Assembly. (Figure 2) The firing

contact provides the electrical circuit for the firing current to enter the rear housing assembly and reach the breech bolt assembly.

15.1.7 Clearing Solenoid Assembly. (Figure 2) The

clearing solenoid assembly is mounted on the rear housing assembly. When energized, the clearing solenoid controls the movement of the clearing sector during clearing.

15.1.8 Clearing Sector Assembly. (Figure 2) The clear-

ing sector assembly is linked to, and controlled by the clear-ing solenoid. When the clearing solenoid is energized, the clearing sector diverts the breech bolt assemblies into the clearing cam path in the rear housing assembly.

15.1.9 Guide Bar. (Figure 2) The guide bar is located in

the rear housing assembly. The guide bar directs rounds into and out of the gun.

15.1.10 Breech Bolt Assembly. (Figure 2) There are six

breech bolt assemblies used in the gun. Each breech bolt assembly consists of a bolt shaft assembly, locking block, firing circuit components, and a breech bolt body.

15.1.11 Rotor Assembly. (Figure 3) The rotor assembly

is the major component of the gun. The main body of the rotor provides a mounting for the rotor tracks, rotor gear, housing ball bearing, needle bearing, rotor stops, and leaf springs. Interrupted locking lugs in the rotor body engage similar interrupted locking lugs on the barrels to secure the barrels into position. The stub rotor assembly provides addi-tional support for the barrels.

15.1.11.1 The rotor tracks retain the breech bolts on the

rotor and guide the forward and backward movement of the breech bolts. There are six sets of rotor tracks attached to ribs along the rotor body. Each set consists of a front rotor track, center rotor track, and removable rotor track. The re-movable track permits installation or removal of a breech bolt for servicing or replacement.

15.1.11.2 The gun is driven by an external drive gear to

the rotor. This drive may be either an electric or hydraulic motor, or a ram air turbine geared to the rotor drive gear.

15.1.12 Rear Housing Assembly and Associated

Parts. (Figure 4 and Figure 5) The rear housing assembly consists of an upper housing body and a lower housing body assembled as a unit. The main cam in the rear housing con-trols the movement of the breech bolts during the firing cycle.

The clearing cam is located at the aft end of the rear hous-ing. The clearing cam controls the breech bolts during the clearing cycle. A portion of the clearing cam path is formed by the housing cover assembly.

15.1.12.1 Several associated parts are mounted directly to

the rear housing. These parts are the lock cam, front unlock-ing cam, rear unlocking cam, roller guide, indexing pin as-sembly, housing cover, retainer assembly (Figure 2), and the end plate. The indexing pin is used when timing an external feeder to the gun. When the indexing pin enters any of the indexing holes in the rotor body, the rotor is correctly posi-tioned relative to the attaching feeder. The retainer assembly serves as a seat for the ball bearing and provides a mounting point for the recoil adapters. The end plate serves as the inner race for the needle bearing and provides a mounting point for the aft end of the gun.

15.2 Functional Description. The operation of the gun is

divided into two distinct cycles; the firing cycle and the clearing cycle. During the firing cycle, six operating actions take place. These actions are feeding, chambering, locking, firing, unlocking, extracting, and ejecting. During the clear-ing cycle, the operating actions are limited to feeding and ejecting.

15.2.1 Firing Cycle. The firing cycle begins when firing

voltage is supplied to the firing contact and power is applied to the drive unit. With power applied, the rotor and barrel cluster rotate in a counterclockwise direction as viewed from the rear of the gun. Ammunition is supplied to the gun from an external source and is guided into the extractor lip of each breech bolt by the guide bar fingers (Figure 6). As the mechanism rotates, the bolt shaft follows the main cam path

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formed in the inner surface of the rear housing. This action cams the breech bolt forward along the rotor tracks. Each breech bolt in turn picks up a round from the guide bar fingers.

Figure 3. Rotor Assembly

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Figure 4. Upper and Lower Housing Bodies and Associated Parts (External View)

15.2.1.1 The continuing camming action on the bolt shaft

moves the breech bolt and round forward to chamber the round in the barrel. As the breech bolt enters the front dwell area of the main cam path, the lock cam forces the bolt shaft downward. The downward movement of the bolt shaft en-gages the locking block in the front locking well of the rotor and locks the breech bolt in the firing position (Figure 7). As rotation continues, the insulated portion of the contact cam depresses the firing cam pin into the breech bolt and the firing cam pin moves the firing pin into contact with the electric primer in the base of the round. When the firing cam pin contacts the metallic insert in the contact cam, the elec-trical circuit between the connector and the primer is com-pleted and the round is fired.

15.2.1.2 The breech bolt (PN 11010157) firing circuits are

provided with a mechanical and electrical interlock. The me-chanical interlock prevents the firing cam pin from being thrown out of the breech bolt body by centrifugal force. The firing cam pin is retained by the contact stop assembly which engages a wedge shaped cutout in the firing cam pin (Figure 8). The electrical interlock prevents the firing of a round if the locking block is not depressed into the front locking well when the breech bolt is in the firing position. If the breech bolt is in an unlocked condition, the small tip on the back of the contact stop will bear against the bolt shaft (Figure 8). In this case, the electrical circuit to the primer is shorted to ground through the tip of the contact stop and the bolt shaft.

If the breech bolt is in the locked condition, the tip of the contact stop will enter a slot in the bolt shaft and only the insulated portion of the contact stop will bear against the firing cam pin when it is fully depressed (Figure 8).

15.2.1.3 The breech bolt (PN 11691422) firing circuit is

basically the same as for breech bolt (PN 11010157). The main differences are as follows: In the event the locking block remains in the unlocked position, the firing cam pin will contact the locking block (Figure 8). This grounds the firing voltage and prevents further motion of the cam pin and likewise prevents the firing pin from contacting the primer of the ammunition. If the breech bolt is in the locked condition, the firing cam pin is depressed by the firing con-tact assembly, forcing the firing pin into contact with the ammunition primer (Figure 8). In this case, the electrical circuit is not grounded and the current flows through the firing cam and the firing pin to the primer.

15.2.1.4 Recoil forces generated when the round is fired

are transmitted from the breech bolt to the recoil adapters via the locking block, the rotor, the ball bearing, the rear hous-ing, and the retainer assembly.

15.2.1.5 After the round has been fired, the breech bolt

remains locked during the lock cam period until the projec-tile leaves the barrel and gas pressure in the barrel is re-duced. As the breech bolt nears the end of the front dwell of the main cam path, the front and rear unlocking cams lift the

Figure 5. Upper and Lower Housing Bodies and Associated Parts (Internal View)

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bolt shaft upward. The upward movement of the bolt shaft disengages the locking block from the front locking well of the rotor and unlocks the breech bolt. The rotor stops in the forward locking well provide an air gap to assist the unlock-ing cams in lifting the locking block from the locking well.

15.2.1.6 At the end of the front dwell of the main cam

path, the bolt shaft enters the reverse segment of the main cam path. As the breech bolt moves rearward, the empty case is extracted from the barrel chamber by the extractor lip. The breech bolt continues to move rearward along the rotor tracks until the empty case is cammed out of the ex-tractor lip by the guide bar and ejected from the gun (Figure 9). The bolt shaft then enters the rear dwell area of the main cam path and moves the breech bolt into position to receive another round. At this point, the breech bolt has completed a full firing cycle. All six breech bolts repeat this cycle until the clearing cycle is initiated by energizing the clearing so-lenoid and removing the firing voltage from the firing con-tact.

15.2.2 Clearing Cycle. The clearing cycle begins when

the clearing signal is supplied to the clearing solenoid. When the clearing solenoid is energized, the clearing sector pivots inward until the actuator blade contacts the rear housing.

With the clearing sector in this position, the tip of the actu-ating pin protrudes slightly into the rear dwell area of the main cam path and is contacted by the first breech bolt that passes this point. When triggered, the actuating pin releases the actuator blade and unlocks the clearing sector. The clear-ing sector then pivots into the rear dwell area of the main cam path to divert each succeeding breech bolt into the cam clearing path.

Figure 6. Handoff of Round from Guide Bar to Breech Bolt

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Figure 7. Breech Bolt Path During Firing Cycle

Figure 8. Breech Bolt in Unlocked and Locked Conditions

15.2.2.1 As a breech bolt picks up a round from the guide

bar fingers, the clearing sector forces the bolt shaft down-ward. The downward movement of the bolt shaft engages the locking block in the rear well of the rotor against the upward pressure of the leaf springs and locks the breech bolt in clearing at the rear of the rotor (Figure 9). As rotation continues, the bolt shaft, directed by the roller guide, enters and follows the clearing cam path. The shallow depth of the clearing cam path holds the bolt shaft down to keep the breech bolt locked in clearing at the rear of the rotor. As the breech bolt continues along the clearing cam path, the un-fired round is cammed out of the extractor lip by the guide bar and ejected from the gun.

15.2.2.2 The clearing cycle ends when the clearing signal

is removed from the clearing solenoid. When the clearing solenoid is de-energized, the clearing sector pivots out of the rear dwell area of the main cam path. As each breech bolt enters the rear of the dwell area in the main cam path, the leaf spring in the rear well of the rotor forces the locking block and bolt shaft upward. The upward movement disen-gages the locking block from the rear well and unlocks the breech bolt. The bolt shaft will now enter the main cam path and the gun can be fired.

Figure 9. Case Ejection

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16 COMPUTER PROGRAM IDENTIFICATION NUM-

BER (CPIN).

None

Figure 10. Breech Bolt Path During Clearing Cycle

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MASTER LIST OF SPECIAL TOOLS, TEST EQUIPMENT, AND

CONSUMABLES

M61 AND M61A1 20 MM AUTOMATIC GUNS PN 7268702 AND

PN 7791641

EFFECTIVITY: ALL

LIST OF EFFECTIVE WP PAGES

Total Number of Pages in this WP is 22 consisting of the following:

* Zero in this column indicates an original page.

Page *Change Page *Change Page *Change No. No. No. No. No. No.

1. . . . . . . . . . . . . . . . . . . . . . . . . 2 4.1 Added . . . . . . . . . . . . . . . . . 1 5 - 6 2 - 4. . . . . . . . . . . . . . . . . . . . . . 1 4.2 Blank. . . . . . . . . . . . . . . . . . 1 7 - 20

TABLE OF CONTENTS

Paragraph Page Paragraph Page

1 MASTER LIST OF SPECIAL

TOOLS

2 MASTER LIST OF TEST EQUIP-

MENT

3 MASTER LIST OF CONSUM-

ABLES

LIST OF ILLUSTRATIONS

Number Title Page Number Title Page

1 Special Tools 2 Breech Bolt Assembly and Disassembly

Fixture 3 Breech Bolt Assembly and Disassembly

Fixture with Punches 4 Breech Bolt Assembly and Disassembly

Fixture with Parts 5 Clearing Cam Holdback Tool 6 Bolt Head Lock Installation Tool 7 Head Space Gage Nose 8 Gage Assembly Roller Guide

9 Muzzle Clamp Removal Tool 10 Installation of Muzzle Clamp Removal

Tool 11 Gun Firing Pin Go No-Go Gage 12 Guide Bar Housing Finger Gage 13 Gun Handling Adapter, F-15 Series Only, Modification 14 Local Manufacture 20 mm Rotor Stop

Go/No-Go Gage (Optional Use) 15 Special Test Equipment

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WP 003 00

LIST OF TABLES

1 Master List of Special Tools 2 Master List of Test Equipment

3 Master List of Consumable Materi-als

1 MASTER LIST OF SPECIAL TOOLS.

Improper use of tools and equipment may cause injury to personnel and damage to equipment.

Table 1 lists special tools. Although common hand tools are not listed herein, a substitute item may be used in place of any required common tool if the use does not degrade the condition and reliability of the material or safety of operation.

Table 1. Master List of Special Tools

Part No./Specification No./NSN

CAGE

Code

Figure/ Index No. Nomenclature Use

Commercial N/A Not Illustrated Ultrasonic parts washer To remove lubricant and carbon buildup

GGG-D-647 Type III, Set 3 (or equivalent)

81348 Figure 1, 11 Drill blank set Used to check barrel or damaged fingers on lower housing body.

GGG-G-17 Type III, Class 1 (or equivalent)

81348 Figure 1, 9 Gage set, small hole Used to gage small diameter holes for wear.

GGG-G-17 Type III, Class 2 (or equivalent)

81348 Figure 1, 10 Gage set, telescoping Used to make hard reach measurement of the gun.

As required.

GGG-W-00686 Type III, Class 1 Size 2 (or equivalent)

81349 Figure 1, 2 Presetting torque wrench 100 to 750 inch pound

Used to torque items identi-fied in WP 006 00, Figure 2.

GGG-W-00686 Type III, Class 1 (excludes exten-sion handle) (or equiva-lent)

81348 Figure 1, 1 Presetting torque wrench 1200 to 4800 inch pound

Used to torque items identi-fied in WP 006 00, Figure 2.

GGG-W-00686 Type III, Class 1 (or equivalent)

81348 Figure 1, 3 Presetting torque wrench 5 to 150 inch pound

Used to torque items identi-fied in WP 006 00, Figure 2.

GGG-W-105B Type I, Class 1, Style A (or equivalent)

81349 Figure 1, 4 Caliper micrometer Used to measure laminated shim thickness.

GGG-W-105B Type III, (or equivalent)

81349 Figure 1, 5 Depth micrometer Used to measure distance between mounting sur-faces of firing contact support and surface of contact cams also for measuring distance be-tween the bearing race and retainer flange.

GGG-W-1437 or equiva-lent

81348 Not Illustrated Torque socket wrench Used to torque aft rear housing bolts.

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2 Change 1

Table 1. Master List of Special Tools - Continued

Part No./Specification No./NSN

CAGE

Code

Figure/ Index No. Nomenclature Use

N/A Local Manu-facture

Figure 5 Clearing cam holdback tool Used to maintain clearing sector in the cleared posi-tion.

N/A Local Manu-facture

Figure 6 Bolt head lock installation tool (Old)

Used in install bolt head locks.

N/A Local Manu-facture

Figure 9, 10 Muzzle clamp removal tool Used to remove muzzle clamp from barrels.

N/A Local Manu-facture

Figure 11 Gage, Go-No-Go, firing pin Used for checking firing pin protrusion.

N/A Local Manu-facture

Figure 14 Gage Go-No-Go, rotor stop Used to check clearance of rotor stops.

N/A Local Pur-chase

Not Illustrated Jet wash machine Used to clean gun parts.

105D3625 05606 Not Illustrated Bolt head lock installation tool (New)

Used to install bolt head locks.

11075759 19201 Figure 15, 3 20 mm dummy cartridge M51 series PGU (typical) (except chrome plated cases)

Used to check mechanical operation of the gun.

135B6226 05606 Figure 1, 12 Clearing sector holdback tool

Used for holding back the clearing sector.

167C2209 05605 Figure 15, 4 Barrel erosion gage with case

Used to measure diametrical wear of barrels.

189F485 05606 Figure 12 Guide bar housing finger gage.

Used to measure wear on guide bar.

7225087 19205 Figure 1, 6 20 mm bore brush Used to cleaning bore and chamber of barrels.

7273689 19204 Figure 15, 2 Flush pin gage (head space gage)

Used to check clearance between flange and rim.

7274771 (Type Designator) Local Manu-facture

Figure 2, 3, 4 Breech bolt assembly and disassembly fixture with punches

Used for breech bolt assem-bly and disassembly.

7738552 (Type Designator) Local Manu-facture

Figure 7 Head space gage nose Used to measure clearance between rim and flange.

7938170 (Type Designator) Local Manu-facture

Figure 8 Gage assembly roller guide Used to measure roller guide and cam path clear-ance.

8766012 19206 Figure 1, 7 Middle section assembly of the push rod

Used when cleaning bore and chamber of barrels.

8766014 19205 Figure 1, 8 Cleaning staff Used to cleaning bore and chamber of barrels.

2 MASTER LIST OF TEST EQUIPMENT.

Table 2 list test equipment required for maintenance of the M61 and M61A1 20 mm automatic guns.

NOTE

The gun handling adapter, PN 68D150008-1003, NSN 1730-00-165-7614GG, reference TO 1F- 15(E)-4-6, Figure 6-21, is utilized for transporting the M61A1 20 mm gun and is applicable only to F-15 series aircraft. The combined bearing retain/ recoil adapter housing, PN 12599985, NSN 1005- 01-365-7913, will not accommodate the current configuration of the gun handling adapter. Inspect gun handling adapter to see if modification has been performed (Figure 13). If required, performed modification. The gun adapter’s part number or national stock number does not change.

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Change 1 3

Table 2. Master List of Test Equipment

Part No./Specification No./NSN

CAGE

Code

Figure/ Index No. Nomenclature Use

Multimeter-8025B, Simp-son 260 or equivalent

89536 Figure 15, 1 Multimeter Used to check electrical solenoid, breech bolt, firing contact circuit and firing pin protrusion

3 MASTER LIST OF CONSUMABLES.

Table 3 lists all consumables required to perform tasks de-scribed by this manual. Items are listed in alphabetical order.

Table 3. Master List of Consumable Materials

Nomenclature Specifications/ Part No./NSN

CAGE

Code Use Reference

Alcohol, Isopropyl TT-I-735 81349 Used for cleaning gun parts and mixing with TW25B lubricant.

WP 006 00

Brush, Bristle, Nonme-tallic

Local purchase N/A Used to remove powder resi-due.

WP 006 00

Brush Wire Local purchase N/A Used when cleaning gun with solvent.

WP 006 00

Brush Wire Local purchase N/A

Cleaner MIL-C-29602 81349 Used in jet washing machine. WP 006 00

Cleaner Lubricant MIL-L-63460 81349 Used to prevent corrosion on gages and external surfaces.

WP 006 00

Cleaning Compound MIL-C-11090 81349 Used for cleaning metallic surfaces.

WP 006 00

Cloth, Abrasive P-C-451, Type 1, 320 grit

81348 Used to prepare gun surfaces for corrosion control main-tenance.

WP 006 00

Compound, Aircraft Cleaning Type II

MIL-C-87937 81349 Used in jet wash machine and cleaning.

WP 006 00

Dry Film Lubricant MIL-L-23398 81349 Used to coat gun for ready storage and exposed bolt and nut assembly.

WP 006 00

Dry Film Lubricant MIL-L-46147 81349 Used to coat exposed metal on gun barrels.

WP 006 00

Fiber Can MIL-C-3955 Type II

19204 Used for enter packing of bar-rels in wood shipping/stor-age box.

WP 004 00

Flowsolder Alloys QQ-S-571 81348 Used to make electrical con-nections during soldering operations.

WP 006 00

Formula 815GD 301007 94058 To remove lubricant and car-bon buildup

WP 006 00

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4 Change 1

Table 3. Master List of Consumable Materials - Continued

Nomenclature Specifications/ Part No./NSN

CAGE

Code Use Reference

Grease, Aircraft and Instrument

MIL-PRF-23827 81349 Used for packing gun bearing and gear.

WP 006 00

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Change 1 4.1/(4.2 blank)

Specifications/ Part No./NSN

CAGE

Code Use Reference

Grease, Aircraft Gen-eral Purpose

MIL-G-81322 81349 Used for packing gun bearing and gear.

WP 006 00

Heat Shrink MIL-I-23053/5 81349 Clearing solenoid cable repair. WP 006 00, Figure 42

Ink Marking A-A-208 Type 4, White

N/A Used to mark designation ar-row.

WP 004 00

Insulation Compound Electrical

MIL-S-8516 81349 Used to seal electrical connec-tions.

WP 006 00

Lacquer A-A-3003, Type 1, class 2

N/A Used to seal and protect ink marking for designation arrow.

WP 004 00

Lint Free Cloth MIL-C-85043 81348 Used to wipe clean gun parts. WP 006 00

Lubricant, All-Weather DOD-L-85336 81348 Used to coat guns parts dur-ing assembly and mainte-nance of gun.

WP 006 00

Lubricant, High Tech TW25B OBAN7 Used for corrosion control during assembly of gun, daily and periodic mainte-nance.

WP 006 00

Lubricant, Semi-Fluid MC3000 OBAN7 May be used in conjunction with TW-25B to control gun corrosion.

WP 006 00

Lubricant, Weapons MIL-L-46150 81349 May be used in conjunction with MC3000 and TW25B to control gun corrosion.

WP 006 00

Plastic Beads MIL-P-85891 81349 Used injet wash machine…