TM 5-6115-584-34
NAVFAC
Table 2-3. Troubleshooting (Cont)
MALFUNCTION
TESTORINSPECTION
CORRECTIVE ACTION
.
—
8 .
Check for worn oil pump (paragraph 7-11).
Replace pump.
Check
(paragraph 7-17).
Replace worn bearings.
9. HIGH OIL PRESSURE
Step 1. Check to see if oil by-pass is stuck closed (paragraph 7-13).
Clean or replace oil by-pass valve and spring.
Step 2. Check for clogged
passages.
Clean all oil lines and passages.
10. EXCESSIVE OIL CONSUMPTION.
Step 1. Check for worn valve guides (paragraph 7-9).
Replace guides, valves, and seals.
Step 2. Check for worn or sticking piston rings (paragraph 7-10).
Replace rings if necessary.
Step 3. Check for air leaks to crankcase.
Replace gaskets and seals as necessary.
BLACK
EXHAUST
EXCESSIVE FUEL CONSUMPTION
Step 1. Check for incorrect timing
7-
18).
Adjust injection timing if necessary.
Step 2. Check for faulty injection pump or nozzles (paragraphs 7-18 and 7-20).
Repair, overhaul, rebuild, or repiace pump and nozzles as necessary.
3. Check valve condition (paragraph
Replace worn valves.
12. TAPPING OR C LICKING SOUND FROM CYLINDER HEAD.
Step 1. Check for too great a valve clearance (paragraph 7-9).
Adjust clearance.
Step 2. Check for broken valve spring (paragraph 7-9).
Replace broken springs.
2-8
