TM 9-2320-302-34
0006 00-1
ENGINE TROUBLESHOOTING
0006 00
.
Table 1. Engine Troubleshooting Procedures.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. Engine Fails to Crank.
Using accessory drive, attempt to
rotate engine.
If engine cannot be rotated,
internal
damage
is
indicated.
Remove engine (WP 0010 00).
2. Engine Cranks, But Does Not Start.
1. Inspect engine gear train for
correct timing mark alignment.
Remove gear case cover and
confirm timing mark alignment
(WP 0019 00).
2. Inspect engine gear train for
damaged or missing gear teeth.
Replace
damaged
gear
train
components (WP 0035 00)
3. Engine Runs Erratically.
1. Inspect engine gear train for
correct timing mark alignment.
Remove gear case cover and
confirm timing mark alignment
(WP 0019 00).
2. Inspect engine gear train for
damaged or missing gear teeth.
Replace
damaged
gear
train
components (WP 0035 00).
4. High Oil Consumption.
1. Clean and inspect engine for
signs of external oil leaks.
If no oil leaks are identified,
internal
damage
is
indicated.
Remove engine (WP 0010 00).
2. Inspect rear of engine for signs
of leaking oil.
If oil leaks are found, inspect and
replace crankshaft rear oil seal
(WP 0023 00).
3. Inspect front of engine for signs
of leaking oil.
If oil leaks are found, inspect and
replace crankshaft front oil seal
(WP 0031 00).
4. Inspect turbocharger for signs
of leaking oil.
If oil leaks are found, replace or
repair turbocharger (WP 0042 00
or WP 0043 00).
5. Inspect oil pan for signs of
leaking oil.
If oil leaks are found, replace oil
pan gasket (WP 0028 00).
