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 684 of 1313
DUMP BODY WILL NOT RAISE - Continued
CONDITION/INDICATION
DOES CONTROL VALVE SHAFT MOVE IN AND OUT?
DECISION
YES - Go to Step (5).
NO - Replace dump body control valve (Volume 4, WP
0720). Go to Step (6) to verify problem is solved.
STEP
5.
ARE THERE LEAKS OR OVERHEATING OF PUMP HOUSING WITH POWER TAKEOFF ENGAGED?
a.
Visually inspect pump housing for leaks and overheating.
T0647DAA
Figure 5.
Pump Housing.
b.
Tighten any loose fittings.
CONDITION/INDICATION
ARE THERE LEAKS OR OVERHEATING OF PUMP HOUSING WITH POWER TAKEOFF ENGAGED?
DECISION
YES - Replace dump hydraulic pump (Volume 4, WP
0719). Go to Step (6) to verify problem is solved.
NO - Go to Step (6) to verify problem is solved.
TM 9-2320-272-23-1
0074
0074-5
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