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TM 10-4320-324-14
Table 5-1. Troubleshooting - CONT.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
PUMP ASSEMBLY (CONT)
2.
PUMP STOPS OR FAILS TO DELIVER RATED FLOW OR PRESSURE.
Step 1. Inspect for faulty seal or pump gasket.
Refer to paragraph 5-24 and replace seal.
Step 2. Check for clogged impeller.
Refer to paragraph 5-24 and free impeller.
Step 3. Inspect for broken impeller or wear plate.
Refer to paragraph 5-24 and replace impeller or wear plate.
Step 4. Check that pump is not driven too slowly.
Check engine speed.
3.
PUMP NOISY.
Step 1. Check for proper bearing lubrication.
Refer to paragraph 5-24 and replace bearings.
Step 2. Check for bent impeller shaft.
Refer to paragraph 5-24 and replace impeller shaft.
Step 3. Inspect for worn bearings.
Refer to paragraph 5-24 and replace bearings.
Step 4. Check for binding, broken, or loose rotating parts.
Refer to paragraph 5-24 and replace parts as required.
Step 5. Check for cavitation.
Refer to paragraph 5-24 and replace parts causing cavitation.
5-5
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