ARMY TM 9-6115-464-34
AIR FORCE 35C2-3-445-2
NAVY NAVFAC P-8-624-34
Table 2-2. TROUBLESHOOTING (CONTINUED)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 4. Oil pump defective.
Repair or replace oil pump (para. 3-39).
9. ENGINE KNOCKS.
Step 1. Fuel injection nozzle sticking (figure 3-25).
Clean, repair or replace fuel injection nozzles (para. 3-23).
Step 2. Fuel injection pump timing advanced (figure 3-21).
Adjust fuel injection pump timing (para. 3-22).
Step 3. Main bearings worn (figure 3-52).
Replace main bearings (para. 3-56).
Step 4. Connecting rod bearings or wrist pins worn (figure 3-52).
Replace connecting rod bearings or wrist pins (para. 3-56).
Step 5. Worn timing gear train (figure 3-44)
Replace timing gears (para. 3-51).
Step 6. Loose flywheel (figure 3-42).
Tighten flywheel mounting hardware (para. 3-51).
Step 7. Loose generator coupling.
Tighten generator coupling (para. 2-6).
Step 8. Incorrect valve adjustment.
Check valve adjustment. (Operator/Crew and Unit Maintenance Manual).
10. ENGINE EXHAUST SMOKE IS EXCESSIVE.
Step 1. Fuel injection nozzle holders out of adjustment, dirty, or defective (figure 3-25).
Clean, adjust, or replace fuel injection nozzles (para. 3-23).
Step 2. Worn, broken or stuck piston rings (20, figure 3-52).
Replace piston rings (para. 3-56).
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