TM-9-2320-272-24-3

TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)

TECHNICAL MANUAL; UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL; VOLUME 3 OF 4

JUNE 1998

TM-9-2320-272-24-3 - Page 428 of 799

TM 9-2320-272-24-3

4-132. HOOD CROSSMEMBER BRACKET MAINTENANCE

THIS TASK COVERS:

a. Removal

b. Cleaning and Inspection

c. Installation

INITIAL SETUP:

APPLICABLE MODELS

REFERENCES (TM)

All

LO 9-2320-272-12

TOOLS

TM 9-2320-272-24P

General mechanic’s tool kit (Appendix E, Item 1)

EQUIPMENT CONDITION

Soft-faced hammer

Hood removed (para. 3-275).

MATERIALS/PARTS

Two lockwashers (Appendix D, Item 350)

Locknut (Appendix D, Item 294)

Insulator (Appendix D, Item 262)

Rags (Appendix C, Item 58)

a. Removal

1.

Remove two screws (9), lockwashers (1), and trunnion bracket (2) from hood crossmember (3).

Discard lockwashers (1).

2.

Remove locknut (4), washer (5), through bolt (7), lower trunnion bracket (6), and insulator (8) from

trunnion bracket (2). Use soft-faced hammer to remove through bolt (7) if necessary. Discard

locknut (4) and insulator (8).

b. Cleaning and Inspection

1.

Wipe trunnion bushings (10) of trunnion brackets (2) and (6) with clean rag.

2.

Inspect trunnion bushings (10) for cracks, breaks, and chips. If cracked, broken, or chipped, replace

bushings (10).

NOTE

Perform steps 3 and 4 if trunnion bushings are damaged.

3.

Using steel drift and hammer, drive trunnion bushings (10) from trunnion bracket (6). Discard

bushings (10).

4.

Using steel drift and hammer, install new trunnion bushings (10) in trunnion bracket (6).

c. Installation

1.

Install new insulator (8) and lower trunnion bracket (6) on trunnion bracket (2) with through bolt (7),

washer (5), and new locknut (4). Tighten locknut (4) 96 lb-ft (130 N·m).

2.

Install trunnion bracket (2) on hood crossmember (3) with two lockwashers (1) and screws (9).

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