Note. See the warnings in Section General information and precautions.
Avoid getting fuel on exposed skin - wear protective gloves. Work only in a well ventilated area.
General information
The fuel pump is integrated with the fuel flow sensor into a single assembly mounted on top of the fuel tank. Access to the assembly is provided by removing the cover of a specially provided hatch in the floor panel in the luggage compartment of the car. The assembly is lowered inside the fuel tank, and therefore its removal is associated with the ingress of the volatile phase of the tank contents into the atmosphere.
Removing
1. Relieve residual pressure in the supply system (see Section Release of residual pressure in the power system).
2. Make sure the car is parked on level ground, then disconnect the negative cable from the battery.
3. Fold forward the rear seat of the vehicle and remove the decorative floor panel cover.
4. Loosen the mounting screws and remove the fuel pump/fuel flow sensor assembly access cover in the floor panel.
5. Disconnect the wiring connector at the top of the assembly.
6. Cover the fuel supply and return hose fittings with a rag, then loosen the clamps and disconnect the hoses from the top of the assembly. Do not forget to mark the hoses in the order they are connected - special marks are provided on the fittings in the form of arrows indicating the direction of flow.
7. Turn away a plastic ring of fastening of assembly in an aperture of a fuel tank.
8. To release the bayonet lock, turn the assembly to the left, then remove it from the tank...
... after waiting for the remaining fuel to drain into it. Remove the rubber seal.
Note. The release of the plastic retaining ring can be done with the help of extendable plumbing tongs.
9. Remove the pump/sensor assembly from the vehicle and place it on a piece of absorbent cardboard or a rag spread out. Check the float at the end of the sensor arm for punctures and signs of fuel intrusion - a damaged float must be replaced.
10. The assembly is equipped with a spring loaded fuel pickup which is designed to ensure that fuel can be drawn into the pump from the lowest point of the tank. Check the freedom of movement of the fuel pickup
11. Inspect the rubber seal in the fuel tank access port for signs of damage. Replace if necessary.
12. Clean the surfaces of the slider and track of the working element of the sensor from dirt deposits and check the components for cracks.
Installation
Installation is in the reverse order. Pay attention to the following points:
- a) Try not to bend the sensor float arm when installing;
- b) When properly installed, the float arm should be perpendicular to the centerline of the vehicle;
- c) Lubricate the mounting rubber gasket with clean fuel before installation;
- d) The marks in the form of arrows on the top cover of the assembly and the edge of the hatch opening in the tank should be aligned;
- e) Follow the correct order of connection to the assembly of the fuel supply and return hoses (in accordance with the marking applied during dismantling).