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 512 of 799

TM 9-2320-272-24-3

4-161. ELECTRICAL LOAD CENTER BOX MAINTENANCE

THIS TASK COVERS:

a. Removal

b. Disassembly

c. Assembly

d. Installation

INITIAL SETUP:

APPLICABLE MODELS

M934/A1/A2

TOOLS

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

MATERIALS/PARTS

Three lockwashers (Appendix D, Item 391)

Sealing compound (Appendix C, Item 62)

MANUAL REFERENCES (TM)

TM 9-2320-272-10

TM 9-2320-272-24P

TM 9-237

EQUIPMENT CONDITION

l

Parking brake set (TM 9-2320-272-10).

l

Battery ground cables disconnected (para. 3-126).

l

External power source disconnected

(TM 9-2320-272-10)

a. Removal

NOTE

Tag wires for installation.

1.

Remove six screws (1) and cover (2) from load center (7).

2.

Remove three screws (20) and wires (3) from relay (6).

3.

Remove screw (14) and wire (19) from neutral buss bar (8).

4.

Remove screws (13) and (14) and two wires (16) and (17) from circuit breakers (10) and (9).

5.

Remove screw (12) and wire (15) from circuit breaker (11).

6.

Remove screw (4), clamp (5), and right main wiring harness (21) from load center (7).

7.

Remove three screws (34) and wires (22) from relay (6).

8.

Remove screw (32) and wire (33) from neutral buss bar (8).

9.

Remove screw (28) and wires (31) from circuit breaker (23).

10.

Remove screw (27) and wires (30) from circuit breaker (24).

11.

Remove screw (26) and wire (29) from circuit breaker (25).

12.

Remove left main wiring harness (35) from load center (7).

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