T M 5 - 6 1 1 5 - 5 8 5 - 1 2
NAVFAC P-8-262-12
T O - 3 5 C 2 - 3 - 4 5 5 -1
TM-05684C-12
Table 4-2. Troubleshooting (Cont)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
3.
4.
5.
6.
7.
8.
ENGINE CRANKS NORMALLY BUT FAILS TO START (Cont).
Step 7. Inspect and test glow plug assemblies (paragraph 4-48).
Replace bad glow plugs.
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.
P e r f o r m c o r r e c t i v e a c t i o n a s n e c e s s a r y.
Step 2. Check valve to rocker arm clearance (paragraph 4-46).
A d j u s t c l e a r a n c e i f n e c e s s a r y.
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.
P e r f o r m c o r r e c t i v e a c t i o n s a s n e c e s s a r y.
Step 2. Check air cleaner assembly for obstructions (paragraph 4-41).
R e m o v e o b s t r u c t i o n s.
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.
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.
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
