ARMY TM 9-6115-464-12
AIR FORCE TO 35C2-3-445-1
NAVY NAVFAC P-8-624-12
Table 4-2. Unit Troubleshooting - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
8. BLACK SMOKE IN EXHAUST.
Step 1.
Step 2.
Step 3.
Step 4.
Improper grade of fuel.
Drain main fuel tank (para 3-45), fuel filters (para 3-22, 3-39) and day tank (para 3-21). Service
system with clean fuel (para 3-45).
Dirty injector nozzles.
Clean or replace injector nozzles (para 4-32).
Dirty air cleaner.
Service air cleaner (para 4-52).
Generator set overloaded.
Reduce load to rated level.
9. BLUE OR WHITE SMOKE IN EXHAUST.
Step 1.
Step 2.
Step 3.
Step 4.
Step 5.
4-12
Improper grade of fuel.
Drain main fuel tank (para 3-45), fuel filters (para 3-22, 3-39) and day tank (para 3-21). Service
system with clean fuel (para 3-45).
Engine operating temperature too low due to defective thermostat.
Replace thermostat (para 4-43).
Crankcase oil level too high.
Drain crankcase and refill to proper level (para 4-4).
Defective nozzle holder assembly.
Replace nozzle holder assembly (para 4-32).
Improper valve tappet clearance.
Adjust valve tappet clearence (para 4-60).
