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 411 of 1313
EXHAUST COLOR BLACK DURING NORMAL OPERATION AND IDLE - Continued
STEP
3.
DOES BLACK SMOKE GO AWAY AFTER CLEANING FUEL SYSTEM?
a.
Drain fuel tank (Volume 2, WP
0250).
T1009DAA
Fuel Tank
Figure 3.
Fuel Tank.
WARNING
Eyeshields must be worn when cleaning with compressed air. Compressed air source
will not exceed 30 psi (207 kPa). Failure to comply may result in injury or death to
personnel.
b.
Clean and flush fuel system. Dry with compressed air.
c.
Replace fuel filter (Volume 2, WP
0258).
d.
Refill tank with fuel.
e.
Prime fuel system M939/A1 (TM 9-2320-272-10), M939A2 (Volume 2, WP
0239).
f.
Start engine.
CONDITION/INDICATION
DOES BLACK SMOKE GO AWAY? START AFTER CLEANING FUEL SYSTEM.
DECISION
YES - Problem corrected.
NO - Go to Step (4).
TM 9-2320-272-23-1
0024
0024-4
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