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 355 of 1313
POOR ACCELERATION AND/OR LACK OF POWER - Continued
STEP
13.
DOES TURBOCHARGER OPERATE PROPERLY?
a.
Remove air intake tube from turbocharger inlet (Volume 2, WP
0249).
T0380DAA
Turbocharger
Exhaust
Manifold
Aftercooler
Figure 13.
Turbocharger.
WARNING
Turbocharger intake fans are extremely sharp and turn at very high RPMs. Keep hands
and loose items away from intake opening. Failure to do so may cause injury to
personnel.
b.
Start engine (TM 9-2320-272-10).
c.
Check if turbo fan rotates freely.
CONDITION/INDICATION
DOES TURBOCHARGER OPERATE PROPERLY?
DECISION
YES - Notify supervisor. It is possible that another troubleshooting work package applies.
NO - Replace turbocharger (Volume 2, WP
0249). Go to Step (14) to verify problem is solved.
TM 9-2320-272-23-1
0014
0014-14
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