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 106 of 1015
TM 9-2320-272-24-1
Table 2-1. Unit Preventive Maintenance Checks and Services (Contd).
ITEM TO
ITEM INTERVAL
CHECK/
PROCEDURE
NO.
SERVICE
NOT FULLY
MISSION
CAPABLE IF:
19
Semi-
Front
annual
wheels,
hubs, and
drums
(Contd)
CAUTION
On M939A2 series vehicles, use care not to damage
CTIS air seals when removing axle components.
Failure to do so may result in further damage to
axle and wheel bearings, in addition to improper
operation of CTIS system.
NOTE
Lugnuts on left side have left-hand threads and can
be identified by an L, while lugnuts on right side
have right-hand threads, and can be identified by
an R.
[RPL]
d.
Clean, inspect, and lubricate axle shaft and universal
joints (para. 3-154).
EXPECTED TEMPERATURES
LUBRICANTS
ABOVE 15°F
+40°F TO -15°F
+40°F TO -65°F
(ABOVE -9°C)
(+4°C TO -26°C)
(+4°C TO -54°C)
GAA
All temperatures
Grease, automotive and
artillery (MIL-G-10924)
1.
Check bearing sleeve inside spindle for signs of
damage. If bearing sleeve is damaged, notify DS
maintenance.
2.
Replace drive flange gasket with RTV sealant.
[RPL]
e. On M939A2 series vehicles, replace filter in wheel
valves (para. 3-448).
WARNlNG
Do not allow grease or oil to contact brake linings.
Linings can absorb grease and oil, causing early
glazing and very poor braking action. Failure to
comply could cause serious injury or death to
personnel.
f.
Check brakeshoes for condition and brakeshoe-to-drum
clearance (para. 3-179). Replace brakeshoes if worn beyond
chamfer on linings (para. 3-180).
g.
Inspect CV boots for rips, cracking, punctures, and
other damage that could cause a loss of lubrication around
CV joint. Replace CV boots if ripped, cracked, punctured,
or damaged (para. 3-223).
2-18
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