TM-9-2320-272-24-1
TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)
TECHNICAL MANUAL; UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL; VOLUME 1 OF 4
JUNE 1998
TM-9-2320-272-24-1 - Page 136 of 1015
TM 9-2320-272-24-1
Table 2-1. Unit Preventive Maintenance Checks and Services (Contd).
NOT FULLY
PROCEDURE
MISSION
CAPABLE IF:
49
Annual
Wiring
Inspect spare tire carrier for security, completeness of
harnesses
assembly, and proper operation.
and com-
pressed air
lines
50
Annual
Spare tire Inspect starter mounting bolts and starter wiring for
carrier
corrosion and loose connections. Tighten starter mounting
bolts 55 lb-ft (75 N•m).
51
Annual
Parking
Inspect brake lever travel (para. 3-172). Replace brakeshoes
brake
if brake lever travel is greater than 2 in. (5.1 cm)
(para. 3-180).
52
Annual
Air dryer
a.
Inspect air dryer, two purge valves, and check valve for
system
security of mounting and signs of damage that could cause
leaks.
NOTE
Air dryer will whistle when filter needs to be
replaced.
[RPL]
b.
Replace filter in air dryer (3-465).
c.
Inspect filter in water separator (para. 3-466).
d.
Inspect all tubes and fittings for damage or cracks that
could cause leaks.
53
Annual
Towing
Check operation of towing pintle hook. Inspect pintle and
pintle
bracket for cracks, breaks, wear, and play of 0.003-0.017 in.
(0.07-0.43 mm) (para. 3-241 or 3-242).
2-48
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