TM 10-320-310-14
Table 5-1.
Direct Support Troubleshooting
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1.
ENGINE CRANKS BUT FAILS TO START
Step 1.
Check for faulty fuel lift pump.
Repair fuel lift pump (para 5-6).
Step 2.
Check for faulty injector. Remove and test injector (para 5-7).
Repair or replace faulty injector (para 5-7).
Step 3.
Check that compression is 280 psi minimum.
Replace engine (para 5-5).
Step 4.
Check for loose cylinder head.
If loose, tighten four hexagon nuts to 37 foot-pounds (6.5 m-kg) (para 5-10).
2.
ENGINE STARTS BUT RUNS UNEVENLY, STALLS, OR SURGES
Step 1.
Check for air in the fuel system.
Service injector (para 5-7).
Step 2.
Check for faulty injector. Remove and test injector (para 5-7).
Repair or replace faulty injector (para 5-7).
3.
ENGINE STOPS RUNNING OR PRODUCES BLACK, WHITE, OR GRAY SMOKE
Step 1.
Check for faulty fuel lift pump.
Repair fuel lift pump (para 5-6).
Step 2.
Check for faulty injector. Remove and test injector (para 5-7).
Repair or replace faulty injector (para 5-7).
4.
ENGINE CONSUMES EXCESS LUBE OIL
Step 1.
Check for oil leaks on bottom of engine.
Tighten screws on cover located on bottom of engine.
5-2
