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 527 of 1313
CONTINUOUS AXLE OR WHEEL NOISE - Continued
STEP
1.
WAS FRONT WHEEL DRIVE ENGAGED WHILE TRAVELING ON HARD FLAT SURFACE?
a.
Visually inspect if front wheel drive is engaged.
T0528DAA
A
A
FRONT WHEEL DRIVE LOCK - IN SWITCH
Figure 1.
Front Wheel Drive Lock-In Switch.
b.
Locate front wheel drive lock-in switch and check for engaged position.
c.
Disengaged front wheel drive when traveling on hard flat surfaces.
CONDITION/INDICATION
WAS FRONT WHEEL DRIVE ENGAGED WHILE TRAVELING ON HARD FLAT SURFACE?
DECISION
YES - Go to Step (6) to verify problem is solved.
NO - Go to Step (2).
TM 9-2320-272-23-1
0045
0045-2
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