4-44. FUEL PUMP AND FUEL LINES - INSPECT REPLACE.
This Task Covers:
Tool Kit, General Mechanic's: Automotive (Appendix B, Section III, Item 1).
Teflon Tape (Appendix E, Section II, Item 7).
Unit shut down and cool.
DO NOT smoke or use open flame when working on the fuel system. An
explosion may occur, causing severe injury or death.
Clean up spills as soon as they occur. Spills may cause falls and serious
a. Inspection. (Refer to Figure 4-44).
Inspect fuel pump (1) for cracks, damage or leakage. Make sure fuel tank has enough fuel.
Inspect to make sure that there are no obstructions in the fuel lines leading to and from the fuel pump (1).
Inspect fuel pump (1) to see if it is pumping fuel, if no fuel is pumping, but the electric motor in the pump is heard,
then the fuel pump is faulty.
Disconnect negative battery cable (para. 4-26).
Loosen hose clamps (2) on fuel discharge line (3). Remove fuel discharge line (3) from hose barbs (4).
Loosen female swivel (5) and remove fuel supply line (6) from elbow (7).
Disconnect power wire connector (8).
Remove three self-tapping screws (9) from heater control box (10). Let heater control box (10) hang away from
heater cover (11). Loosen screw (12) 1/4 turn on heater cover (13). Remove cover (11) together with attached
Remove two bolts (13) and two flanged locknuts (14) and remove fuel pump (1) from heater cover (11).
Remove elbows (7 and 15) from fuel pump (1).