TM-9-2320-272-23-1
TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)
TECHNICAL MANUAL; FIELD MAINTENANCE MANUAL; VOLUME 1 OF 5
SEPTEMBER 2012
TM-9-2320-272-23-1 - Page 570 of 1313
VEHICLE WANDERS OR PULLS TO ONE SIDE - Continued
T0546DAA
Figure 4.
Wheel Bearing Assembly.
b.
Raise vehicle wheels until they are off the ground M939 (Volume 3, WP
0484),
M939A1/A2 (Volume 3, WP
0485).
NOTE
Excessive play indicates improperly adjusted or damaged bearings.
c.
Lift up on bottom of tire using a prybar to determine bearing play.
CONDITION/INDICATION
ARE WHEEL BEARINGS IN GOOD OPERATING CONDITION?
DECISION
NO - Moderate play, adjustment required. Adjust wheel bearings (Volume 3, WP
0483). Go to Step (11) to verify
problem is solved.
NO - Excessive play at front wheel. Replace damaged wheel bearings M939/A1 (Volume 3, WP
0479),
M939A2 (Volume 3, WP
0481). Go to Step (11) to verify problem is solved.
NO - Excessive play at rear wheel. Replace rear wheel bearings M939/A1 (Volume 3, WP
0480), M939A2
(Volume 3, WP
0482). Go to Step (11) to verify problem is solved.
YES - Little or no play, wheel bearings OK. Go to Step (5).
TM 9-2320-272-23-1
0053
0053-5
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