TM 9-2320-272-24-1
Table 2-1. Unit Preventive Maintenance Checks and Services (Contd).
NOT FULLY
ITEM TO
MISSION
ITEM INTERVAL
CHECK/
PROCEDURE
NO.
SERVICE
CAPABLE IF:
FRONT WHEELS, HUBS, DRUMS, BRAKES,
Front
19
Semi-
SPRINGS, AXLE, AND STEERING
annual
wheels,
hubs, and
WARNING
drums
Completely deflate tire before removing from axle
if there is obvious damage to wheel components.
Injury or death to personnel may result from
exploding wheel components.
Use caution when inflating tires. Ensure tire is in
a tire cage and properly seated on rim before
inflating. An improperly seated tire can burst
with explosive force. Failure to comply can cause
death or serious injury to personnel.
Do not work on any component supported only by
lift jacks or hoist. Always use blocks or proper
stands to support the component prior to any
work. Equipment may fall and cause injury or
death to personnel.
Air in system is under pressure. Ensure engine is
shut down and all air reservoirs are drained
before disconnecting CTIS components to prevent
serious injury to personnel.
NOTE
Similar left and right side components are
inspected in the same manner and will be
accomplished simultaneously. Procedures cover
left side only.
When documenting discrepancies for similar left
and right side components, indicate which side is
affected.
To simplify maintenance, perform items 19a
through 19g simultaneously with items 20a
through 20c.
a. On M939 series vehicles, inspect split locking ring (2)
for dents or breaks that could cause them to pop off. If
ring is loose, break wheel (4) down and inspect for damage
to rim (1) or tire (3). Replace any damaged wheel
components (para. 3-221).
b. On M939A1/A2 series vehicles, inspect wheels (4) for
loose or missing rim nuts (5). Tighten rim nuts (5)
210-240 lb-ft (285-325 Nm). Replace any rim stud (6)
that is broken or has stripped threads (para. 3-222).
c. Inspect axle drive companion flange for oil leaks. If oil
appears to be leaking from expansion plug (8) on axle
drive companion flange (7), notify your supervisor.
2-16
