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

  TM-9-2320-272-23-1 - Page 408 of 1313

FIELD MAINTENANCE
EXHAUST COLOR BLACK DURING NORMAL OPERATION AND IDLE
INITIAL SETUP:
Tools and Special Tools
Tool Kit, General Mechanic's: Automotive
(Volume 5, WP
0826, Table 1, Item 56)
Personnel Required
(2)
References
Point to Point Schematics
References (cont.)
TM 9-2320-272-10
Volume 2, WP
0239
Volume 2, WP
0251
Volume 2, WP
0258
Equipment Condition
Vehicle parked and engine shut down.
(TM
9-2320-272-10)
TROUBLESHOOTING PROCEDURE
EXHAUST COLOR BLACK DURING NORMAL OPERATION AND IDLE
NOTE
Conduct these malfunction tests if there is black exhaust smoke at idle. This procedure will
check for fuel contamination or a restricted air filter.
TM 9-2320-272-23-1
0024
0024-1


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