ARMY TM 9-6115-604-12
NAVY NAVFAC P-8-633-12
Table 4-3. Unit Troubleshooting (Continued)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
6.
ENGINE EXHAUST EXCESSIVELY BLACK (CONTINUED).
Step 6. Check turbochargers for proper operation.
Replace turbochargers.
Step 7. Check valve adjustment and Injector timing.
Adjust valves and/or Injector timing as necessary Refer to paragraph 4-81.
7. ENGINE EXHAUST WHITE OR BLUE.
Step 1. If problem occurs after an ether start, check ether Installation for defects resulting an applications of
excessive ether to engine.
Repair as necessary.
Step 2..Low coolant temperature may be the problem.
Adjust radiator shutters.
Step 3. Check for faulty (stuck open) thermostat.
Replace.
Step 4. Check turbocharger seals.
Replace a defective turbocharger.
8. GENERATOR OUTPUT FREQUENCYNOLTAGE CANNOT BE MAINTAINED.
Perform an operational checkout in accordance with paragraph 4-2, step k
Adjust circuits as specified.
9. LOW POWER OR LOSS OF POWER.
Step 1. Perform all tests and Inspections listed for malfunctions 5 through 7, above.
Correct as specified.
Step 2. Oil level may be too high Check
Drain excess oil.
10. ENGINE CANNOT REACH GOVERNED RPM.
Step 1. Load sharing panel A104 may be set too low.
Perform operational checkout, paragraph 4-2, step k.
Step 2. Check fuel quality. Drain a sample from the fuel tank into a clear container.
Change fuel If cloudy If fuel has water in it, change fuel filters.
Step 3. Check for cracked or broken fuel lines.
Replace damaged fuel lines as necessary.
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