TM 5-3825-225-14&P
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
5. OIL PRESSURE IS LOST.
Disassemble the engine and check for worn main bearings and camshaft bearings, worn oil pump, worn or
plugged oil suction tube, plugged oil strainer, pressure oil pump relief valve sticking open, or broken oil pump
relief valve spring.
Replace any of the above parts as necessary.
6. ENGINE OVERHEATS.
Step 1. Check the fuel injector pump (see Malfunction 2, step 1).
Step 2. Check injector nozzles (see Malfunction 2, step 3).
Step 3. Check fuel injector pump and valve timing and correct as necessary (see paragraph 5-20).
Step 4. Check cylinder compression (see Malfunction 2, step 5).
Step 5. Check the water pump.
Replace the water pump as necessary.
Step 6. Disassemble the engine and check for clogged water jacket or clogged radiator.
If the problems above cannot be repaired, replace the engine.
7. WATER DISTRIBUTOR PUMP WILL NOT PRIME.
Check the pump shaft seal (22, Appendix F, Figure 82).
Replace the pump shaft seal as necessary (see paragraph 5-23).
8. WATER LEAKS AROUND PUMP SHAFT
Check for worn pump shaft seal (22, Appendix F, Figure 82).
Replace the pump shaft seal as necessary (see paragraph 523).
9. PUMP HAS LOW OPERATING PRESSURE AND WEAK SPRAY.
Check pump impeller (21, Appendix F, Figure 82) for wear.
Replace the pump impeller as necessary (see paragraph 5-23).
10. PUMP WILL NOT HOLD A PRIME.
Check for damaged check valve (5, Appendix F, Figure 82).
Replace the check valve as necessary (see paragraph 5-23).
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