TM-9-2320-272-24-4
TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)
TECHNICAL MANUAL; UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL; VOLUME 4 OF 4
JUNE 1998
TM-9-2320-272-24-4 - Page 574 of 836
5-89. MAIN
TM 9-2320-272-24-4
THIS TASK COVERS:
a. Removal
b. Installation
INITIAL SETUP:
APPLICABLE MODELS
M934/A1/A2
EQUIPMENT CONDITION
TOOLS
General mechanic’s tool kit (Appendix E, Item 1)
REFERENCES (TM)
TM 9-2320-272-10
TM 9-2320-272-24P
l
Parking brake set (TM 9-2320-272-10).
l
Battery ground cables disconnected (para 3-126).
l
Fluorescent light tubes removed (para 3-371).
l
Emergency/blackout lamp and light removed
(para 3-372).
l
Blackout light switch and 110-volt receptacle
removed (para 3-373).
NOTE
l
The left and right main wiring harnesses are replaced the same
way. This procedure covers the right main wiring harness.
l
Tag wires for installation.
1.
Remove six screws (1) and cover (2) from load center (8).
2.
Remove three setscrews (9) and wires (3) from relay (10).
3.
Remove setscrew (15) and wire (16) from neutral bus (11).
4.
Remove three screws (13) and five wires (14) from 20 amp circuit breakers (12).
5.
Remove screw (4) and clamp (5) from plate (7) and wiring harnesses (6).
6.
Remove twelve screws (22) and clamps (21) from van ceiling (18) and main wiring harness (20).
7.
Remove grommet (23) from van side panel (17).
8.
Remove three screws (25) and wire clip (24) from van side panel (17).
9.
Remove main wiring harness (20) from van body (19).
1.
Position main wiring harness (20) on van body (19).
2.
Install wire clip (24) on side panel (17) of van body (19) with three screws (25).
3.
Install grommet (23) on side panel (17).
4.
Install twelve clamps (21) on main wiring harness (20) and van ceiling (18) with twelve screws (22).
5.
Install clamp (5) on harnesses (6) and plate (7) with screw (4).
6.
Install five wires (14) on 20 amp circuit breakers (12) with three screws (13).
7.
Install wire (16) on neutral bus (11) with setscrew (15).
8.
Install three wires (3) on relay (10) with three setscrews (9).
9.
Install cover (2) on load center (8) with six screws (1).
5-568
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