TM 5-4310-354-14
Table 4-2. Organizational Troubleshooting - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
ENGINE - continued
5. ENGINE KNOCKS, DEVELOPS EXCESSIVE NOISE, OR VIBRATES - continued.
Step 4. Inspect valves for sticking and correct clearance.
Adjust the rocker arms (para 4-50).
Step 5. Any other cause.
Notify Direct Support or General Support.
6. ENGINE HAS LOW OIL PRESSURE.
Step 1. Engine oil level too low or wrong grade of oil used.
Refer to LO 5-4310-354-12, figure 3-1.
Step 2. Defective engine oil pressure gauge.
Replace the engine oil pressure gauge (para 4-57).
Step 3. Defective engine oil pressure switch.
Replace the oil pressure switch (para 4-67).
Step 4. Any other cause.
Notify Direct Support or General Support Maintenance.
7. ENGINE OVERHEATING.
Step 1. Check drive belt for slipping.
Adjust drive belt tension (figure 4-5).
Step 2. Check for restriction in exhaust system.
Remove any restriction or refer to para 4-47 for exhaust manifold maintenance.
Step 3. Inspect for damaged cooling fan, leakage at water pump, and for defective thermostat.
Refer to para 4-45 for maintenance of the cooling fan, water pump, and thermostat.
Step 4. Inspect radiator for leakage and for damaged hoses.
See para 4-29 for maintenance of radiator and oil cooler group and figure 4-3 for radiator hose
service.
4-15
