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 138 of 799

TM 9-2320-272-24-3

4-66. FRONT WIRING HARNESS (M939/A1) REPLACEMENT (Contd)

47.

Disconnect wires (2) and (3) from ether start switch (1).

48.

Disconnect wires (5), (6), and (7) from heater blower motor switch (4).

49.

Disconnect wire (9) from warning signal lamp switch (8).

NOTE

After harness wires have been removed in steps 50 through 52,

cables and hardware should be installed on terminal adapters

for installation.

50.

Remove nut (10), screw (14), battery cables (11) and (12), and wire (13) from terminal adapter (15).

51.

Remove nut (16), screw (19), wire (20), and battery cable (18) from terminal adapter (17).

52.

Remove nut (21), screw (23), battery cables (22) and (26), and wire (24) from terminal adapter (25).

53.

Push wires (13), (20), and (24) through hole in cab floor.

54.

Remove four screws (36) from warning light panel (28) and pull panel (28) away from instrument

panel (29).

55.

Disconnect wire (30) from parking brake indicator light (27).

56.

Disconnect wire (31) from low air pressure indicator light (41).

57.

Disconnect wire (32) from spring brake override indicator light (40).

58.

Disconnect wire (33) from engine hot indicator light (39).

59.

Disconnect wire (34) from axle lock-in indicator light (38).

60.

Disconnect wire (35) from high-beam indicator light (37).

4-402