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 350 of 1313
POOR ACCELERATION AND/OR LACK OF POWER - Continued
STEP
8.
ARE THERE AIR LEAKS IN EXHAUST SYSTEM?
a.
Check cross over tube, aftercooler, turbocharger, and exhaust manifold for leaks.
T0380DAA
Turbocharger
Exhaust
Manifold
Aftercooler
Figure 8.
Exhaust System.
b.
Tighten any loose hose clamps.
CONDITION/INDICATION
ARE THERE AIR LEAKS IN EXHAUST SYSTEM?
DECISION
YES - Aftercooler leaking through gasket. Replace after cooler gasket (Volume 2, WP
0299). Go to Step (14)
to verify problem is solved.
YES - Turbocharger leaking through gasket. Replace turbocharger gasket (Volume 2, WP
0249). Go to
Step
(14) to verify problem is solved.
NO - Go to Step (9).
TM 9-2320-272-23-1
0014
0014-9
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