TM 9-2330-356-14
Table 5-4. Troubleshooting - Direct Support (Con`t).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
ENGINE (Con't)
7.
ENGINE MISFIRES (Con't).
Step 3.
Repair, overhaul, rebuild, or replace pump and nozzles as necessary.
Step 4.
Replace broken springs.
Step 5.
Check cylinder head assembly for build-up of carbon (para 4-73).
Clean carbon from cylinder head assembly.
LOW ENGINE POWER.
8.
Step 1.
Check for poor compression.
See Malfunction 15, LOW ENGINE COMPRESSION.
Step 2.
Check for incorrect timing.
9. LOW OIL PRESSURE.
Step 1.
Clean or replace oil bypass valve and spring.
Step 2.
Replace oil pump.
Step 3.
Notify general support maintenance personnel.
10. HIGH OIL PRESSURE.
Step 1.
Check to see if oil bypass valve is stuck closed (para 7-74).
Clean or replace oil bypass valve and spring.
Step 2.
Check for clogged oil passages.
Clean all oil lines and passages.
11. EXCESSIVE OIL CONSUMPTION.
Suspect worn valve guides, bad seals in crankcase, sticking or worn piston rings. Notify
general support maintenance personnel.
5-6