5.18.6. Repair of the fuel pump

The fuel level sensor, the fuel filter, actually the electric pump and the regulator of pressure are a part of the fuel pump. All these elements are installed in an arm and the case of the fuel pump (in the module of the fuel pump).
Main malfunctions of the fuel pump:
– refusal or misoperation of the sensor of the index of level of fuel;
– contamination or damage of the fuel filter of the pump;
– failure of the electric pump;
– failure of the regulator of pressure.
In most cases violation of operation of the fuel level sensor is caused by pollution or oxidation of its contact group.
It will be required to you: the screw-driver with a flat edge, passatizh.
1. Disconnect a drain tube from the pump module case, having hooked it the screw-driver.
2. Overcoming effort of a spring, move the module case up guides a little and, having hooked the screw-driver, remove a lock ring from one of guides. After that the case of the module can be taken away a little from an arm.
3. Disconnect a tip of a "mass" wire from the fuel pressure regulator.
4. Wring out the screw-driver a clamp of a block of a plait of wires …
5. … also disconnect it from an intermediate block.
6. Disconnect a block of a plait of wires from the electric pump.
7. Unclench two clamps of the fuel level sensor and, moving it up grooves of the case of the fuel pump …
8. … remove the sensor from the case.
9. Wash out contacts of a rheostat of the sensor and a plate of his toddler gasoline, and then wipe with the rags which are not leaving fibers moistened in alcohol.
10. Having hooked the screw-driver a spring clamp of the regulator of pressure of fuel …
11. … take a clamp from an arm …
12. … also remove the regulator.
13. Examine sealing rings of the regulator of pressure. Replace strongly pressed out, hardened or torn rings for what remove them, having hooked the screw-driver.

Note
Grease sealing rings of the regulator of pressure of fuel before installation with a thin layer of jellied lubricant or engine oil.

14. Wring out plastic clamps …
15. … also remove the lower part of the case of the fuel pump from arm guides.
16. For replacement or cleaning of the fuel filter hook its basis the pointed tool …
17. … also remove the filter from a pump housing, overcoming resistance of a spring lock washer.
18. Before the return installation of the filter take a lock washer, correct its passatizham and install in the filter case.
19. Install the filter as it should be, the return to removal.
20. For replacement of the electric pump wring out a plastic clamp …
21. … also take the electric pump from the case.
22. Collect the fuel pump as it should be, the return to dismantling.