TM 5-4310-354-14
Table 5-1. Direct Support and General Support Troubleshooting - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
ENGINE - continued
4. ENGINE LACKS POWER - continued.
Step 2.
Check fuel injection pump timing.
Time the injection pump (para 7-8).
Step 3.
Check for low compression (para 1-10b).
Replace defective piston rings, pistons, or connecting rods (para 7-24).
Step 4.
Check for failure of main bearings, connecting rod bearings, or camshaft bearings.
Repair or replace, as necessary (para 7-26, 7-24, and 7-22).
5. ENGINE KNOCKS, DEVELOPS EXCESSIVE NOISE, OR VIBRATES.
Step 1.
Check valve clearance.
Adjust valve clearance (para 4-50).
Step 2.
Check fuel injection pump timing.
Time the injection pump (para 7-8).
Step 3.
Check for bent or broken pushrods.
Replace defective pushrods (para 7-12).
Step 4.
Inspect for clogged oil pump inlet screen and a defective pressure regulator.
Clean the oil pump inlet screen. Replace a defective pressure regulator (para 7-15 and 7-16)
Step 5.
Replace defective parts (para 7-24).
Step 6.
Check for failure of main bearing, connecting rod bearings, and camshaft bearings.
Repair or replace, as necessary (para 7-26, 7-24, and 7-22).
6. ENGINE HAS LOW OIL PRESSURE.
Step 1.
Check oil pump inlet screen for clogging and for defective pressure regulator.
Clean a clogged inlet screen and replace a defective regulator (para 7-15 and 7-16).
5-4 Change 2
