ARMY TM 9-6115-464-12AIR FORCE TO 35C2-3-445-1NAVY NAVFAC P-8-624-12Table 4-2. Unit Troubleshooting - ContinuedMALFUNCTIONTEST OR INSPECTIONCORRECTIVE ACTION10. LOW OIL PRESSURE.Step 1.Step 2.Step 3.Step 4.Defective oil pressure gauge.Replace oil pressure gauge (para 4-63).Defective oil pressure transmitter.Replace oil pressure transmitter (para 4-22).Clogged oil filters.Service oil filters (para 4-4).Improper viscosity of oil.Drain crankcase and refill with oil of proper viscosity (Lubrication Order para 4-4).11. ENGINE OVERHEATING.Step 1.Step 2.Step 3.Step 4.Step 5.Step 6.Step 7.Step 8.V-belt broken or out of adjustment.Adjust or replace V-belt (para 4-40).Defective thermostat.Replace thermostat (para 4-43).Defective or improperly adjusted shutter and controls.Adjust or replace shutter and control assembly (para 4-39).Rust or scale clogging radiator.Replace radiator (para 4-38).Radiator air passages dogged.Clean radiator air passages (para 4-19).Collapsed radiator hoses.Replace radiator hoses.Defective water pump.Replace water pump assembly (para 4-42).Exhaust pipe or muffler restricted.Clean or replace exhaust pipe or muffler (para 4-53).4-13
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