TM 5-6115-584-12
NAVFAC P-8-622-12
TO-35C2-3-456-1
TM-05682C-12
Table 4-2. Troubleshooting (Cont)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
3. ENGINE CRANKS NORMALLY BUT FAILS TO START (Cont).
Step7. Inspect and test glow plug assemblies (paragraph 4-48).
Replace bad glow plugs.
4. ENGINE STARTS BUT DOES NOT RUN SMOOTHLY (MISFIRES, KNOCKS, OR MAKES UNUSUAL
NOISES).
Step 1. Check steps 1, 2, 3, 4 and 5 under ENGINE CRANKS NORMALLY BUT FAILS TO
START above.
Perform corrective action as necessary.
Step 2. Check valve to rocker arm clearance (paragraph 4-46).
Adjust clearance if necessary.
5. LOW ENGINE POWER ESPECIALLY UNDER HEAVY LOAD.
Step 1. Check steps 1, 2, 3, 4 and 5 under ENGINE CRANKS NORMALLY BUT FAILS TO
START above.
Perform corrective actions as necessary.
Step 2. Check air cleaner assembly for obstructions (paragraph 4-41).
Remove obstructions.
6. ENGINE HAS EXCESSIVE OIL CONSUMPTION.
Step 1. Check air cleaner element.
Clean or replace element if necessary.
Step 2. Check breather pipe (paragraph 4-45).
Clean or replace breather pipe.
7. LOW OIL PRESSURE.
Step 1. Check oil level (paragraph 4-51).
Add oil if required,
Step 2. Check oil pressure gauge (paragraph 4-33).
Replace a bad gauge.
8. HIGH OIL PRESSURE.
Step 1. Check oil.
Add proper grade of oil.
Step 2. Check oil pressure gauge (paragraph 4-33).
Replace gauge if necessary.
4-8
