TM 9-6115-604-34
NAVFAC P-8-633-34
Table 2-3. Engine Troubleshooting (Continued)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
6.
ENGINE EXHAUST EXCESSIVELY WHITE OR BLUE (CONTINUED).
Step 5.
Check aftercooler for internal cracks or defects in coolant passages and test in accordance with
paragraph 9-42.
Repair or replace as necessary.
7.
GENERATOR OUTPUT FREQUENCY CANNOT BE MAINTAINED.
Check electronic speed control for proper adjustment.
Adjust as necessary.
8.
HARD STARTING
Step 1.
Check intake and exhaust manifolds for possible seal leaks in accordance with the Operator and
Organizational Maintenance Manual.
Replace seals.
Step 2.
Check fuel pump operation in accordance with paragraph 6-8.
Repair or replace as necessary.
Step 3.
Check injector operation in accordance with paragraph 6-17.
Repair or replace as necessary.
Step 4.
Check injector lobes on camshaft in accordance with paragraph 9-15.
If lobes are worn, replace camshaft.
Step 5.
If oil consumption is high, check for worn rings or liners by removing the exhaust manifolds and
checking for oily or carboned parts in accordance with paragraph 9-12.
Repair as necessary.
9.
LOW POWER OR LOSS OF POWER.
Perform all tests and inspections listed for MALFUNCTIONS 2, 5, 6, 7, and 9 of this manual.
Correct as specified.
10. CANNOT REACH GOVERNED RPM.
Step 1.
Fuel pump may not be properly calibrated. Check in accordance with paragraph 6-11.
Calibrate.
Step 2.
Check and test injector flow in accordance with paragraph 6-17.
Adjust.
Step 3.
Check cylinder head pressure for possibility of gasket blow-by.
Replace gasket if necessary.
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