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 436 of 836

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TM 9-2320-272-24-4

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Install brakeshoe assembly (12) and dust cover (9) on companion flange (10) with four

screws (13). Tighten screws (13) 180-230 lb-ft (244-312 N•m).

Position actuating plate (6) against backing plate (7) so retainer opening (5) fits over brake lever

stud (8) of backing plate (7).

NOTE

Apply GAA grease to inside diameter of all seals.

Install parking brake drum (4) and output flange (3) on output shaft (11).

Apply a thin coating of gasket sealant to mating surfaces of washer (2) and install washer (2) and

new locknut (1) on output shaft (11). Tighten locknut (1) 450-600 lb-ft (610-814 N•m).

Remove nut (18), washer (17), screw (16), washer (17), screw (14), washer (19), and chain from main

input flange (20) and front output flange (15).

Apply a thin coating of gasket sealant to mating surfaces of inspection plate (24) and transfer

case (23) and install inspection plate (24) on transfer case (23) with eight screws (25). Do not tighten

screws (25).

Using crowfoot wrench, install pushrod (22) and interlock air cylinder (21) on transfer case (23).

Tighten interlock air cylinder (21) 30-40 lb-ft (41-54 N•m).

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