TM 5-3805-262-203-5. FUEL SYSTEM TROUBLESHOOTING (CONT)MALFUNCTIONTEST OR INSPECTIONCORRECTIVE ACTION1. LOW FUEL PRESSURE (Cont).Step 7. Bleed air from fuel system (page 4-40).Tell assistant to crank engine for 30 seconds while you watch pres-sure gage in tee installed in fuel injection pump feed pump port.Pressure gage should indicate 20 to 30 psi.a .b .If pressure gage indicates 20 to 30 psi, troubleshooting is com-pleted; problem was in fuel element or fuel bowl.Loosen clamps and disconnect hose from barb fittings installedin filter head and fuel injection pump feed pump.Disconnect pressure gage from tee.Remove barb hose connectors and tee installed in filter head andfuel injection pump feed pump.Reinstall elbows in filter head and fuel injection pump feedpump.Using compressed air, clear any blockage from tube.Reconnect tube fittings to elbows and tighten securely.Reinstall engine right side panels (page 9-17).If pressure gage does not indicate 20 to 30 psi, notify nexthigher maintenance level to replace fuel injection pump feedpump.Step 8. Disconnect opposite end of fuel supply hose at fuel tank and removefuel supply hose.Remove elbow from electric fuelpump.Install 1/8 NPTF male to 1/4NPTF female elbow in electricfuel pump port.Install zero to 25 psi pressuregage in elbow (elbow is 1/4NPTF) .T e l l a s s i s t a n t t o t u r n i g n i t i onkey switch to on position.Pressure gage should indicate3.2 to 9 psi.T e l l a s s i s t a n t t o t u r n i g n i t i onkey switch to off position.3-47
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