The fuel pump consists of: a fuel level sensor, a fuel filter and the electric pump itself
All these elements are installed in the bracket and the fuel pump housing.
The main faults of the fuel pump:
- – failure or incorrect operation of the fuel level indicator sensor;
- – clogging or damage to the fuel filter of the pump;
- – failure of the electric pump.
In most cases, a malfunction of the fuel level sensor is caused by contamination or oxidation of its contact group.
Removal of the fuel module was discussed in the article - "Replacing the fuel pump Niva Chevrolet"
Remove the retaining ring from the axis of the sensor rheostat slider, prying it with a pointed tool, remove the slider from the axis together with the float lever and the contact plate.
Wash the contacts of the rheostat and the slider plates with gasoline, and then wipe with a lint-free cloth soaked in alcohol.
To replace the slider, use round-nose pliers with long jaws to move the slider from the shoulder of the float lever, remove the slider
To replace the rheostat plate, use a pointed tool to press the upper lock of its mount, remove the plate from under the slider.
To remove the plate, unsolder the wires from its terminals.
Install the plate and slider in the reverse order of removal.
To clean or replace the fuel filter, pry its base with a pointed tool and remove it from the pump body, overcoming the resistance of the spring lock washer.
Before reinstalling the filter, remove the lock washer, straighten it with pliers and install it in the filter.
Install the filter in the reverse order of removal.
To replace the electric pump, disconnect the wiring harness block from the intermediate block
Overcoming the force of the spring, press the pump body down along the guides, remove the locking cotter pin
Remove the housing together with the electric motor from the bracket guides.
Disconnect the wiring harness block from the electric motor
After squeezing the spring retainer, remove it, remove the electric pump from the housing
Disconnect the electric pump hose from the bracket branch pipe
Install the electric pump and all removed parts in the reverse order of removal.