TM 5-3895-354-14&P
Section E. FUEL SYSTEM
103. FUEL PUMP FAILS TO DELIVER ADEQUATE PRESSURE
Probable Cause
Possible Remedy
Fuel pump improperly adjusted
Adjust the fuel pressure (Para. 64)
Air leak in intake line
Tighten fittings in intake line or replace a defective line
Restricted intake line
Inspect tubing and valves for restrictions and damage;
replace a defective line or valve
Loose or broken coupling to blower motor
Repair a defective coupling (Fig. 48)
Wrong pump rotation
Check the pump rotation; reverse rotation of the pump
Frozen pump shaft
Replace a defective fuel pump (Para. 63)
Fuel strainers clogged
Clean fuel strainers
104. FUEL PUMP NOISY
Probable Cause
Possible Remedy
Improper coupling alignment
Reline fuel pump to coupling
Gear click on newly installed pump
Continue operation for 4 to 5 hours to eliminate noise.
Replace a defective fuel pump.
105. PULSATING FUEL PUMP PRESSURE
Probable Cause
Possible Remedy
Fuel oil strainers clogged
Service the fuel oil strainers (Para. 65)
Intake line or fuel valves leaking
Tighten all fittings. Replace a defective line or fuel
valve
Fuel oil strainer cover leaks
Tighten cover screws (Para. 65)
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