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TM 10-4320-351-14
TABLE 4-2. TROUBLESHOOTING (Continued)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
3. Engine starts but lacks power or will not run.
Step 1. Check for clogged air intake.
a.
Remove filter element from air filter.
b.
Check for blockage at air intake.
c.
Inspect filter element for clogging; replace if necessary. Refer to paragraph 4.9.3
Step 2. Check for clogged fuel filter.
a.
Drain and check fuel filter. Replace if clogged. Refer to paragraph 4.9.1
b.
Refer to Direct Support Maintenance.
FUEL TRANSFER PUMP
1. Pump will not prime
Check discharge check valve for proper seating.
a.
Check for debris or damage that prevents check valve from seating fully. Clean valve seat and surface.
b.
Replace check valve. Refer to paragraph 4.12.3
2. Pump leaks at inlet
Check inlet mounting screws.
Verify that all inlet mounting screws are evenly tightened
3. Emergency Shutoff Valve leaks.
Inspect to determine area of leak.
a. If leak is at face of unisex coupling, replace face seal. Refer to paragraph 3.3.
b. Replace emergency shutoff valve.
c. Refer valve to Direct Support Maintenance for repair.
4-8
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