Table 4-2. Organizational Troubleshooting - Continued
TEST OR INSPECTION
ENGINE - continued
5. ENGINE KNOCKS, DEVELOPS EXCESSIVE NOISE, OR VIBRATES - continued.
Step 4. Inspect valves for sticking and correct clearance.
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.
Step 2. Defective engine oil pressure gauge.
Step 3. Defective engine oil pressure switch.
Step 4. Any other cause.
Notify Direct Support or General Support Maintenance.
7. ENGINE OVERHEATING.
Step 1. Check drive belt for slipping.
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