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 415 of 1313
EXCESSIVE EXHAUST NOISE - Continued
STEP
1.
IS MUFFLER IN GOOD OPERATING CONDITION?
a.
Make sure engine is turned OFF.
T0486DAA
Figure 1.
Muffler.
WARNING
Do not touch hot exhaust system components with bare hands. Failure to comply may
result in injury or death to personnel.
b.
Visually inspect muffler for wear and damage.
CONDITION/INDICATION
IS MUFFLER IN GOOD OPERATING CONDITION?
DECISION
YES - Go to Step (2).
NO - Replace muffler (Volume 2, WP
0274). Go to Step (3) to verify problem is solved.
TM 9-2320-272-23-1
0025
0025-2
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