FUEL PUMP (MECHANICAL)
Tools and Special Tools
Engine Shut Down
91B, Light Wheel Vehicle Mechanic (2)
Visually inspect fuel pump and hose clamps for mount security, leaks or any damage affecting serviceability.
END OF TASK
Test the fuel system in a well-ventilated and open place. Fuel vapors create ire and explosion
hazards, which will result in severe personal injury or death. Do not allow any open lame,
smoking materials, or other potential igniter near fuel or the fuel system. Always keep spilled
Remove electrical connector from the fuel solenoid (WP 0066).
Place a drip pan under the fuel pump.
This test is performed with the fuel system serviced, no loose connections and no fuel system
Loosen fuel pump input line clamp (Figure 1, Item 3).
Remove fuel line (Figure 1, Item 4).
Push primer button on fuel water separator (WP 0065) until fuel output is steady (no air).
Connect fuel line (Figure 1, Item 4).
Tighten fuel pump input line clamp (Figure 1, Item 3).
Release tension and slide clamp (Figure 1, Item 1) up the fuel hose.
Remove fuel pump output fuel line (Figure 1, Item 2).
Crank engine (WP 0005) and observe that fuel is being discharged from the fuel pump.
Replace fuel pump this work package if test fails.
Install fuel pump output fuel line (Figure 1, Item 2).
Release tension and slide clamp (Figure 1, Item 1) over the fuel hose.
Test complete, perform shop cleanup.