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 351 of 1313
POOR ACCELERATION AND/OR LACK OF POWER - Continued
STEP
9.
IS FUEL LEAKING FROM FUEL TRANSFER PUMP?
Check for fuel at fuel transfer pump while operating hand primer.
T0384DAA
FUEL INJECTOR
SUPPLY LINES
FUEL PRESSURE
TRANSDUCER
FUEL TRANSFER
PUMP
Figure 9.
Fuel Transfer Pump.
CONDITION/INDICATION
IS FUEL LEAKING FROM FUEL TRANSFER PUMP?
DECISION
YES - Replace fuel transfer pump (Volume 2, WP
0243). Go to Step (14) to verify problem is solved.
NO - Go to Step (10).
TM 9-2320-272-23-1
0014
0014-10
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