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 343 of 1313
POOR ACCELERATION AND/OR LACK OF POWER - Continued
STEP
1.
IS AIR CLEANER INDICATOR IN RED ZONE?
a.
Check air cleaner indicator for fresh air restriction indication.
T0878DAA
A
Air Cleaner Indicator
A
Figure 1.
Air Cleaner Indicator.
b.
Inspect air intake stack for restrictions.
CONDITION/INDICATION
IS AIR CLEANER INDICATOR IN RED ZONE?
DECISION
YES - Perform air cleaner servicing (TM 9-2320-272-10). Go to Step (14) to verify problem is solved.
NO - Go to Step (3) for M939A2. Go to Step (2) for M939/A1.
STEP
2.
IS FUEL SYSTEM IN GOOD OPERATING CONDITION?
WARNING
Diesel fuel is highly flammable. Do not perform fuel system procedures near open flame.
Failure to comply may result in injury or death to personnel.
a.
Check fuel shut off solenoid and circuitry.
TM 9-2320-272-23-1
0014
0014-2
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