TM-9-2320-272-23-2
TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)
TECHNICAL MANUAL; FIELD MAINTENANCE MANUAL; VOLUME 2 OF 5
SEPTEMBER 2012
TM-9-2320-272-23-2 - Page 349 of 1417
Table
1.
Field Preventive Maintenance Checks and Services - Continued.
ITEM
NO.
INTERVAL
ITEM TO BE
CHECKED OR
SERVICED
PROCEDURE
EQUIPMENT
NOT READY/
AVAILABLE IF:
14
Semiannual
Hood
a.
Inspect hood support bar and locking pins for
condition and security of mounting. If support bar or
locking pins are defective, repair or replace as required
(Volume 4, WP
0559).
b.
Inspect hood stop cables for condition and
security of mounting. If stop cables are defective, repair
or replace as required (Volume 4, WP
0560).
c.
Lubricate hood trunnion every 6,000 mi
(9,656
km) or 6 months, whichever occurs first (Volume
5, WP
0820).
d.
Lubricate hood hinges every 1,000 mi
(1,600
km) or monthly, whichever occurs first (Volume
5, WP
0820).
15
Semiannual
Front Lights and
Cable Assembly
Inspect front light cable assembly wiring for frays, splits,
missing or damaged insulation, or poor connections.
Repair affected wiring (Volume 3, WP
0352).
16
Semiannual
Motor Mount
Trunnions
a.
Check two front engine mounting trunnion
screws for tightness. If engine mounting trunnion screws
are loose, tighten.
b.
Tighten five lower trunnion mount screws
65
to
75
lb-ft
(88 to 102 N·m).
c.
On M939A2 series vehicles, check front
mounting locknuts for tightness. Tighten mounting
locknuts 75 to 85 lb-ft (102 to 115 N·m).
17
Semiannual
Emergency and
Service
Compressed Air
Systems
a.
Inspect front emergency and service air and
dummy couplings for serviceability and seals.
NOTE
Inspection of emergency and service air lines
and fittings will be accomplished over com-
plete vehicle. Tighten, repair, and/or replace
components of these compressed air sys-
tems as required. If maintenance is required
at a higher level, records should reflect clos-
est point of reference to ensure proper iden-
tification of components requiring service.
b.
Inspect air lines, fittings, and emergency shutoff
valve for security of mounting, tightness of connections,
and damage that could cause air leaks (Volume 5,
WP
0819).
TM 9-2320-272-23-2
0207
0207-14
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