Fuel pump

PROCEDURE

Fuel Pump 1 – fuel filter; 2 – O-ring; 3 – strainer; 4 – pump reservoir; 5 – tube from fuel accumulator to fuel filter; 6 – tube from pump to fuel accumulator; 7 – fuel accumulator; 8 – drain tube from fuel distributor; 9 – fuel return tube to fuel tank; 10 – fuel supply tube from fuel tank; 11 – pump bracket; 12 – rubber cushion; 13 – special nut; 14 – fuel filter bracket; 15 – fuel filter mounting bolt; 16 – bolt for pump-to-accumulator tube; 17 – shock absorber; 18 – plate; 19 – check valve; 20 – O-ring; 21 – pump retaining ring; 22 – fuel pump; 23 – fuel line mounting bolt; 24 – sealing washer; 25 – fuel line to fuel distributor

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The fuel pump is installed together with the fuel filter and fuel accumulator under the vehicle underbody, in front of the fuel tank. PROCEDURE 1. Disconnect the wire from the negative battery terminal. 2. Raise the vehicle over an inspection pit or lift the rear of the vehicle. 3. Disconnect the wiring connector from the pump. 4. Unscrew shock absorber 17. 5. Unscrew bolt 16 and disconnect tube 6 from the pump. 6. Unscrew the nuts and remove plate 18. 7. Unscrew the three screws and remove ring 21. 8. Remove pump 22, O-ring 2 and filter 3. Install the pump in reverse order, noting the following: – replace O-ring 2 and lubricate it with gasoline before installation; – when installing ring 21, the projections on the pump must engage the recesses in the ring; – if check valve 19 is removed, replace O-ring 20 and tighten the valve to a torque of 20 N·m; – replace the sealing washers of tube 6; – tighten shock absorber 17 to a torque of 20 N·m; – start the engine and check for fuel leaks. Warning Do not operate the fuel pump without fuel, as fuel serves as a lubricating and cooling medium for the fuel pump. If the pump is run without fuel, it may fail and even catch fire.