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 292 of 1313
ENGINE CRANKS BUT DOES NOT START - Continued
STEP
7.
IS FUEL TRANSFER PUMP OPERATING PROPERLY?
a.
Loosen plunger on fuel transfer pump until air is purged from fuel system.
T0362DAA
FUEL PRESSURE
TRANSDUCER
FUEL TRANSFER
PUMP
PLUNGER
Figure 7.
Fuel Transfer Pump.
NOTE
If fuel is present at fuel transfer pump when operating hand primer, fuel transfer pump
is not operating properly.
b.
Check for fuel at fuel transfer pump while operating hand primer.
CONDITION/INDICATION
IS FUEL TRANSFER PUMP OPERATING PROPERLY?
DECISION
YES - Go to Step (8).
NO - Replace fuel transfer pump (Volume 2, WP
0243). Go to Step (22) to verify problem is solved.
TM 9-2320-272-23-1
0007
0007-7
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