REPLACE ENGINE FUEL PUMP (M548A1) -- Continued
Before replacing engine fuel pump, do the fuel pump flow test (WP 0147 00).
Place suitable container under inlet hose (1) and outlet hose (2) to catch fuel.
Disconnect inlet hose (1) and outlet hose (2) from engine fuel pump (3) and place in container.
Remove three cap screws (4), washers (5), shield (6), gasket (7), and engine fuel pump (3) from engine. Discard gasket.
If new engine fuel pump will be installed, do Step 4.
Remove two hose fittings (8) from old engine fuel pump (3) and save for installation on new engine fuel pump.
Replace engine fuel pump if any of the following defects are found:
Fuel pump inlet or outlet ports are blocked and blockage cannot be removed.
Fuel pump housing is cracked or mounting flange is warped.
Fuel pump shaft is bent or twisted.