M2 .50 Cal Trunnion Block

Last Updated on Tue, 05 Apr 2016 | Machine Guns M2 Heavy

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Select trunnion block shim thickness to attain a handtight position between 20° to 55° from the locked position.

END OF WORK PACKAGE

DIRECT SUPPORT

MACHINE GUNS, CALIBER .50: M2, BARREL FLEXIBLE, W/E (1005-00-322-9715) M48 TURRET TYPE (1005-00-957-3893) SOFT MOUNT (1005-01-343-0747) FIXED TYPE RIGHT HAND FEED (1005-00-122-9339) FIXED TYPE LEFT HAND FEED (1005-00-122-9368)

MAINTENANCE OF M2 MACHINE GUN PREPARATION FOR STORAGE OR SHIPMENT

INITIAL SETUP:

Materials/Parts

Barrier material (item 2, WP 0060 00) Cushioning material (item 15, WP 0060 00) Fiberboard (item 17, WP 0060 00) Fiberboard box (item 3, WP 0060 00) Fiberboard box (pPP-B-636) (item 4,

WP 0060 00) Lubricating oil (LSA) (item 21, WP 0060 00) Paper tape (item 29, WP 0060 00) Sleeve and tubing bag (item 1, WP 0060 00) Solvent cleaning compound (item 13,

WP 0060 00) Steel strap (item 26, WP 0060 00) Wooden box (PPP-B-601) (item 5, WP 0060 00) Wooden box (pPP-B-621) (item 6, WP 0060 00)

CLEANING, DRYING, AND PRESERVATION

The M2 machine gun shall be disassembled as necessary to accomplish the cleaning. All surfaces shall be cleaned with solvent cleaning compound (item 13, WP 0060 00).

Preserve all surfaces of the M2 machine gun with LSA (item 21, WP 0060 00).

PACKAGING

Packaging, if required, for shipping/storage that will not exceed 90 days shall be as follows:

Clean IAW TM 9-1005-213-10.

Wrap with barrier material (item 2, WP 0060 00).

Place in sleeve and tubing bag (item 1, WP 0060 00) or wrap with barrier material (item 2, WP 0060 00) and seal with paper tape (item 29, WP 0060 00).

Place one or more of item in minimum size container. Block and brace in accordance with MIL-STD-1186. Cushion the M2 with cushioning material (item 15, WP 0060 00) and use fiberboard (item 17, WP 0060 00) as filler to create a tight pack.

References

MIL-STD-129 MIL-STD-1186 TM 9-1005-213-10

PACKAGING - Continued

Fiberboard containers shall be in accordance with PPP-B-636 (item 4, WP 0060 00) and may be Class Domestic. Gross weight and size of the material shall determine grade of fiberboard container. Fiberboard boxes (item 3, WP 0060 00) may also be used.

Wooden boxes shall be in accordance with PPP-B-601 (item 5, WP 0060 00) or PPP-B-621 (item 6, WP 0060 00).

Equivalent materials may be used. Mark in accordance with MIL-STD-129. PACKING

The unit container shall be packed in a wooden box (item 5, WP 0060 00). Nail top to shipping box.

Secure box with steel straps (item 26, WP 0060 00). MARKING

Serial number is required and shall be listed on the packing list. Packing list shall be put inside the shipping box.

Apply following marking on the outside of each fiberboard box:

National Stock Number Federal Item Name One Each Date

Weight: Cube

Only the following markings shall be applied by stencil or label to exterior of shipping box:

Address of Destination Weight and Cube

END OF WORK PACKAGE

DIRECT SUPPORT

MACHINE GUNS, CALIBER .50: M2, HEAVY BARREL FLEXIBLE, W/E (1005-00-322-9715) M48 TURRET TYPE (1005-00-957-3893) SOFT MOUNT (1005-01-343-0747) FIXED TYPE RIGHT HAND FEED (1005-00-122-9339) FIXED TYPE LEFT HAND FEED (1005-00-122-9368)

MAINTENANCE OF M2 MACHINE GUN PRE-EMBARKATION INSPECTION OF MATERIEL IN UNITS ALERTED FOR OVERSEAS MOVEMENT

INITIAL SETUP:

References

TB 9-1000-247-34 WP 0020 00

Refer to TB 9-1000-247-34.

Air Force users use annual gaging procedures (WP 0020 00). END OF WORK PACKAGE

DIRECT SUPPORT

MAINTENANCE OF M2 MACHINE GUN ILLUSTRATED LIST OF MANUFACTURED ITEMS

INTRODUCTION Scope

This work package includes complete instructions for making items authorized to be manufactured or fabricated at unit and direct support maintenance.

How To Use the Index of Manufactured Items

A part number index in alphanumeric order is provided for cross-referencing the part number of the item to be manufactured to the page which covers the fabrication criteria.

Explanation of the Illustrations of Manufactured Items

All instructions needed by maintenance personnel to manufacture the item are included on the illustrations. All bulk materials needed for manufacture of an item are listed by part number or specification number in a tabular list on the illustration.

INDEX OF MANUFACTURED ITEMS

Part Number

Page

NASM20995-C41 NASM20995-F41

0038 00-2 0038 00-3 0038 00-3

ILLUSTRATIONS OF MANUFACTURED ITEMS

NOTES:

Fabricate from 20.5 in. (52.1 cm) long rod of 3/8 in. diameter brass alloy NSN 9525-00-249-7441. Wrap paper tape (item 29, WP 0060 00) where triangle joins.

2NE289

Figure 2. Safety Wire

2NE289

Figure 2. Safety Wire

Table 1. List of Materials.

Nomenclature

Part Number

NASM20995-C41 NASM20095-F41 MS52005C017

Figure

Wire, Non-electrical Wire, Non-electrical Wire, Non-electrical

NOTES:

Fabricate wire from part number found in Table 1. Cut wire to necessary length.

Refer to NASM 33540 for illustration of safety wire. END OF WORK PACKAGE

CHAPTER 6

SUPPORTING INFORMATION FOR

MACHINE GUN, M2

UNIT AND DIRECT SUPPORT

REFERENCES

SCOPE

This work package lists all field manuals, forms, technical manuals/technical orders, miscellaneous publications, and pamphlets referenced in this manual.

FIELD MANUALS

FM 17-12-1 FM 21-11 FM 23-65 FORMS

AFTO Form 22

AFTO Form 105 DA Form 2028

DA Form 2404

NAVMC 10722

SF 364 SF 368

TMDER NAVSEA 9086/10 RELATED PUBLICATIONS

DOD 4160.21-M-1

Tank Combat Tables First Aid for Soldiers Machine Gun Caliber .50, HB, M2

Technical Order System Publication Improvement Report and Reply

Inspection, Maintenance, and Firing Data for Ground Weapons

Recommended Changes to Publications and Blank Forms

Equipment Inspection and Maintenance Work Sheet

Marine Corps Recommended Changes to Publications

Report of Discrepancy

Product Quality Deficiency Report (Category II)

Publication Improvement Report (Navy)

Defense Demilitarization Manual

TECHNICAL BULLETINS

TB 9-1000-247-34

TB 43-0240 TB 43-180

TECHNICAL MANUALS/TECHNICAL ORDERS

SW 361-AO-MMO-010

TM 9-1005-213-10 TO 11W2-6-3-161 TM 02498A-10/1 SW361-AB-MMO-010

TM 9-1005-213-23&P

TM 9-1005-245-13&P TM 9-1005-245-13&P/1 TO 11W2-8-1-322

TM 9-1010-231-13&P TM 08686A-13&P/1 TO 11W2-8-32-4

TM 9-1300-206 TM 9-4933-208-34

TM 750-244-7 TM 4700-15/1

Standards for Overseas Shipment of Small Arms and Fire Control Materials

Inspection and Calibration of Small Arms Gages

Calibration and Repair Requirements for the Maintenance of Army Materiel

Small Arms Machine Gun Mounts MK26, MK46, MK58, MK78, and MK82 Description, Operation, Maintenance and Illustrated Parts Breakdown

Operator's Manual for Machine Gun, Caliber .50, M2, Heavy Barrel, Flexible and Turret Type

Unit and Direct Support Maintenance Repair Parts and Special Tools List (Including Depot Repair Parts and Special Tools List) for Machine Gun, Caliber .50, M2, Heavy Barrel, Flexible and Turret Type

Operator's, Unit, and Direct Support Maintenance Manual with Repair Parts and Special Tools List (RPSTL) for Machine Gun Mounts and Combinations for Tactical/Armored Vehicles and Ground Mounting

Operator's, Unit, and Direct Support Maintenance Manual with Repair Parts and Special Tools List (RPSTL) for Mount, Machine Gun, MK64

Ammunition and Explosive Standards

Operator's, Unit, and Direct Support Maintenance Manual for Kits, Barrel and Breechblock Gage M8, M6A1

Procedures for Destruction of Equipment in Federal Supply Classifications 1000, 1005, 1010, 1020, 1025, 1030, 1055, 1090, and 1095 to Prevent Enemy Use

Equipment Record Procedures

TO 00-35D-54 TO 11W-1-10

TO 11W2-6-3-172

MISCELLANEOUS PUBLICATIONS

AFR 50-36

AFP 50-36, Volume 1

AR 750-1 CTA 8-100

CTA 50-970

MCO 4855.10 MCO P4610.19

MIL-STD-129 MIL-STD-1186

NASM 33540 SL 1-2/SL 1-3

PAMPHLETS

DA PAM 25-30

DA PAM 738-750

END OF WORK PACKAGE

Air Force Material Deficiency Reporting and Investigating System

Historical Date Recording of Inspection, Maintenance, and Firing Data for Ground Weapons

USAF Combat Arms Training and Maintenance Program

USAF Combat Arms Training and Maintenance

Army Material Maintenance Policies

Army Medical Department Expendable/Durable Items

Expendable/Durable Items (Except: Medical, Class V Repair Parts, and Heraldic Items)

Product Quality Deficiency Report

Transportation and Travel Record of Transportation Discrepancies

Marking for Shipment and Storage

Cushioning, Anchoring, Bracing, Blocking and Waterproofing; with Appropriated Test Methods

General Practices for Safety Wiring and Cotter Pinning

Publications Stocked by USMC (INDEX) Program Training and Management and Range Operations

Consolidated Index of Army Publications and Blank Forms

The Army Maintenance Management System (TAMMS)

UNIT AND DIRECT SUPPORT

INTRODUCTION FOR STANDARD FORMAT MAINTENANCE ALLOCATION CHART (MAC)

INTRODUCTION

The Army Maintenance System MAC

This introduction provides a general explanation of all maintenance and repair functions authorized at various maintenance levels under the standard Army Maintenance System concept.

The MAC (immediately following the introduction) designates overall authority and responsibility for the performance of maintenance functions on the identified end item or component. The application of the maintenance functions to the end item or component shall be consistent with the capacities and capabilities of the designated maintenance levels, which are shown on the MAC in column (4) as:

Unit — includes two subcolumns, C (crew/operator) and O (unit) maintenance.

Direct Support — includes an F subcolumn.

General Support — includes an H subcolumn.

Depot — includes a D subcolumn.

The tools and test equipment requirements (immediately following the MAC) list the tools and test equipment (both special tools and common tool sets) required for each maintenance function as referenced from the MAC.

The remarks (immediately following the tools and test equipment requirements) contain supplemental instructions and explanatory notes for a particular maintenance function.

Maintenance Functions

Maintenance functions are limited to and defined as follows:

1. Inspect. To determine the serviceability on an item by comparing its physical, mechanical, and/or electrical characteristics with established standards through examination (e.g., by sight, sound, or feel). This includes inspection and gagings and evaluation of cannon tubes.

2. Test. To verify serviceability by measuring the mechanical, pneumatic, hydraulic, or electrical characteristics of an item and comparing those characteristics with prescribed standards on a scheduled basis, i.e., load testing of lift devices and hydrostatic testing of pressure hoses.

Maintenance Functions - Continued

3. Service. Operations required periodically to keep an item in proper operating condition; e.g., to clean (includes decontaminate, when required), to preserve, to drain, to paint, or to replenish fuel, lubricants, chemical fluids, or gases. This includes scheduled exercising and purging of recoil mechanisms.

4. Adjust. To maintain or regulate, within prescribed limits, by bringing into proper position, or by setting the operating characteristics to specified parameters.

5. Align. To adjust specified variable elements of an item to bring about optimum or desired performance.

6. Calibrate. To determine and cause corrections to be made or to be adjusted on instruments of 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.

7. Remove/Install. To remove and install the same item when required to perform service or other maintenance functions. Install may be the act of emplacing, seating, or fixing into position a spare, repair part, or module (component or assembly) in a manner to allow the proper functioning of an equipment or system.

8. Replace. To remove an unserviceable item and install a serviceable counterpart in its place. "Replace" is authorized by the MAC and assigned maintenance level is shown as the third position code of the Source, Maintenance and Recoverability (SMR) code.

9. Repair. The application of maintenance services, including fault location/troubleshooting, removal/installation, disassembly/assembly procedures, and maintenance actions to identify troubles and 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.

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