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TM 5-4320-306-24
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
6. ENGINE OIL PRESSURE IS LOW
Step 1 Check for clogged lube oil cooler inspect lube oil cooler (para 3-8).
Replace a clogged or otherwise faulty lube oil cooler (para 3-8).
Step 2. Check for partially clogged oil suction pipe inlet screen inspect oil suction pipe inlet
screen.
Replace an oil suction pipe that is damaged or cannot be cleaned adequately
(para 3-11).
Step 3. Check for air leak in oil suction pipe. Inspect oil suction pipe.
Replace a faulty oil suction pipe (para 3-11).
Step 4. Check for worn or damaged lube oil pump inspect lube oil pump.
Repair or replace a faulty lube oil pump (para 3-11).
7. PUMP DOES NOT DISCHARGE OR HAS LOW DISCHARGE PRESSURE
Step 1. Check for broken impeller Disassemble pump (para 3-4) inspect impeller.
Replace impeller if necessary (para 3-4).
8. PUMP MAKES EXCESSIVE NOISE
Step 1. Check for foreign matter in pump. Disassemble pump (para 3-4) Inspect for foreign
matter.
Remove foreign matter.
3-5
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