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 381 of 1417
Table
1.
Field Preventive Maintenance Checks and Services.
ITEM
NO.
INTERVAL
ITEM TO BE
CHECKED OR
SERVICED
PROCEDURE
EQUIPMENT
NOT READY/
AVAILABLE IF:
1
Annual
Front End
NOTE
After all services and inspections have been
completed, perform a short road test to en-
sure all corrections have been implemented.
Correct any defects or malfunctions that may
occur during this test.
NOTE
•
Lubricate vehicle in accordance
with (Volume 5, WP
0820).
•
Perform all semiannual checks listed
in (WP
0207).
a.
Check front end alignment with toe-in gauge.
Correct toe-in is 1/16 to 3/16 in. (1.588 to 4.763 mm).
When toe-in is correct, tighten crossshaft screws and
nuts 35 to 55 lb-ft (47 to 75 N·m).
b.
Inspect axle housings and differentials for
cracks.
c.
Inspect shock absorbers and mounting brackets
for looseness, wear, cracks, serviceability, and leaks.
Replace leaking shock absorbers if more than a Class I
leak is detected (Volume 3, WP
0492).
d.
Check each tire using a tire depth gauge. Tread
depth should be at least 1/8 in. (3 mm) or as indicated
on tire depth chart.
2
Annual
Engine
Compartment
and Cab
a.
Inspect front cab mounting brackets for security,
wear, cracks, splits, broken welds, loose bushings, and
missing screws. Replace front cab mounting brackets if
worn, cracked, split, or welds are broken. Replace loose
insulators and missing screws (Volume 4, WP
0568).
b.
Inspect rear cab mounting brackets for security,
wear, cracks, splits, broken welds, loose bushings, and
missing screws. Replace rear cab mounting brackets if
worn, cracked, split, or welds are broken. Replace loose
bushings and missing screws (Volume 4, WP
0569).
c.
Tighten front cab mounting screws.
d.
Check the following items on M939A2 vehicles:
(1)
Inspect front and rear engine mounting brackets
for security, wear, cracks, splits, broken welds, loose
bushings, and missing bolts.
(2)
Check left-side engine mounting locknuts
(Figure 1, Item 1) and right-side engine mounting screws
TM 9-2320-272-23-2
0208
0208-2
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