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 409 of 1313
EXHAUST COLOR BLACK DURING NORMAL OPERATION AND IDLE - Continued
STEP
1.
IS FUEL CONTAMINATED?
T1010DAA
Figure 1.
Fuel Filter.
NOTE
Fuel is contaminated if container is 1/4 full of water or contains dirt.
Open drain valves at fuel filter and drain approximately 1 pt (0.473 L) of fuel into glass container.
CONDITION/INDICATION
IS FUEL CONTAMINATED?
DECISION
YES - Go to Step (2).
NO - Go to Step (4).
TM 9-2320-272-23-1
0024
0024-2
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