TM 10-4520-259-13&P
Table 4-2. Unit Troubleshooting Procedure
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
4.
NOISY FUEL PUMP
Step 1.
Check suction hose for leaks.
Tighten suction hose connections. Replace suction hose if cracked or leaking.
Step 2.
Inspect fuel pump strainer for clogging.
Clean or replace fuel pump strainer.
Step 3.
Inspect fuel filter for dirt or clogging.
Clean or replace fuel filter if necessary.
Step 4.
Inspect fuel pump for overheating.
Replace fuel pump if necessary.
Step 5.
Check fuel pump for proper priming.
Prime fuel pump if necessary.
5.
PRESSURE GAGE INDICATES PULSATING,PRESSURE
Step 1.
Inspect suction hose for leaks.
Tighten suction hose connections.
Step 2.
Inspect strainer cover for loose hardware.
Tighten cover screws.
Step 3.
Inspect fuel pump strainer for clogging.
Clean or replace fuel pump strainer.
Step 4.
Inspect fuel filter for dirt or clogging.
Replace fuel filter if necessary.
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