TM-9-2320-361-24-1

2-1/2 TON, 6X6, M44A2 SERIES TRUCKS

TECHNICAL MANUAL; FIELD AND SUSTAINMENT MAINTENANCE PART 1 OF 2

AUGUST 2006
TM-9-2320-361-24-1

  TM-9-2320-361-24-1 - Page 104 of 1176

MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
2. EXHAUST COLOR WHITE
DURING NORMAL
OPERATION AND IDLE
CAUTION
Thick white smoke indicates
coolant in engine combustion
chambers. When this condition is
evident, shut the engine down
immediately and determine cause.
Continued engine operation may
result in permanent engine
damage.
Check engine temperature. Ensure
engine temperature is at specified
level (TM 9-2320-361-10).
If engine temperature is above
correct operating level. See
(WP 0006 00, table 4,
malfunction 1).
3. EXCESSIVE EXHAUST
NOISE
1. Inspect turbocharger for secure
mounting and exhaust leaks.
2. Inspect exhaust pipes for secure
connections, cracks, breaks, and
excessive rust.
3. Inspect exhaust stack for secure
connections, cracks, and breaks.
4. Inspect exhaust manifold for
damage or loose bolts
(WP 0073 00). (For M50A3 series
vehicles, refer to WP 0074 00).
If turbocharger mountings are
loose, tighten 23–27 lb-ft
(31–37 N•m).
Replace damaged parts
(WP 0073 00). (For M50A3 series
vehicles, refer to WP 0074 00.)
Replace damaged parts
(WP 0073 00). (For M50A3 series
vehicles, refer to WP 0074 00.) If
excessive exhaust noise still exists,
it may be necessary to install an
exhaust insulator kit 12300664.
Repair or replace exhaust system
(WP 0073 00). (For M50A3 series
vehicles, refer to WP 0074 00).
.
4. EXHAUST FUMES IN CAB
1. Inspect exhaust manifold,
turbocharger, exhaust pipes, and
connections for leaks.
Replace damaged parts
(WP 0073 00). (For M50A3 series
vehicles, refer to WP 0074 00.)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
ENGINE CRANKS BUT WILL
NOT START IN COLD
WEATHER (FUEL SYSTEM
OPERATING PROPERLY)
1. Check manifold heater system
electrical circuit (WP 0015 00,
table 1, malfunction 1).
2. Check fuel pump, supply lines,
and filter for leaks, bends, kinks,
and restrictions. If vehicle is
equipped with alcohol
evaporator, check for proper
operation as required
(TM 9-2320-361-10).
Repair or replace electrical circuit.
Repair or replace damaged fuel
components.
TM 9-2320-361-24-1
0006 00
0006 00-8
MECHANICAL SYSTEMS TROUBLESHOOTING - UNIT (Contd)
Table 2. Exhaust System Troubleshooting Procedures (Contd).
Table 3. Manifold Heater System Troubleshooting Procedures.


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