Vehicles with a diesel engine. Due to the fact that the fuel pump is driven from the camshaft, only the fuel gauge sensor is located in the fuel tank.
There must be no fuel in the tank before removing the sensor. This may be the result of using up the entire supply of fuel, or the fuel may need to be drained into a prepared container.
Make sure the workplace is well ventilated.
To do this, you can use a centrifugal fan, the electric motor of which is outside the air flow.
Attention! When dismantling the fuel pump, a small amount of fuel may escape. Avoid skin contact with fuel. Fuel vapors are poisonous and highly flammable. Avoid open flames. Keep a fire extinguisher ready and keep your work area well ventilated.
Removing
The procedure for removing the fuel gauge sensor is shown on the example of a car with a gasoline engine.
The fuel gauge sensor for vehicles with a diesel engine is removed in an identical way.
1. Disconnect the wire terminal from the negative pole of the battery «masses» (-), by turning off the ignition first.
Attention! When the battery is disconnected from the radio, the security code is deleted, as well as all automatic settings on the radio. If the code is unknown or not written down, the only way to put the radio into operation is with the assistance of a workshop or the manufacturer of the radio. Therefore, first make sure that the code is known.
2. Drain the fuel from the tank.
Attention! There is a risk of injury when jacking up and placing the vehicle on jack stands. Familiarize yourself with the safety precautions outlined in the chapter «car jacking».
3. Jack up the vehicle and place it on jack stands.
4. Remove the underbody protection.
5. Disconnect the supply and ventilation hoses from the filling pipe of the tank by loosening the fastening clamps and shifting the clamps onto the hoses. Plug the supply hose with a suitable plug or clamp it with a clamp.
6. Disconnect the hoses 1 from the fuel filter 2 and collect the fuel flowing out of them (see illustration).
7. Disconnect the fuel tank ventilation hose 3 from the canister filter 4 (see illustration 3.6).
8. Disconnect the fuel pump power plug.
9. Unscrew bolts of fastening and disconnect an arm of fastening of the muffler.
10. Support the fuel tank and unscrew the bolts that secure it to the body.
11. Press down the bottom protection near the pipes of the exhaust system and remove the fuel tank.
12. Remove the plug or remove the clamp from the supply hose and completely drain the fuel from the tank.
13. Disconnect from the giving pump fuel and ventilating hoses.
14. Unscrew the six nuts that secure the support ring of the fuel pump and fuel gauge sensor.
15. Carefully remove the fuel pump with the sensor from the fuel tank.
Installation of the fuel pump and fuel gauge sensor is carried out in the reverse order of their removal.
16. Replace, if damaged, sealing gasket.
The correct mounting position of the fuel pump and / or the fuel gauge sensor is ensured by fixing them.
17. Be sure to replace the fuel tank mounting nuts with new ones.
Tightening torques for threaded connections:
- fuel tank to the body - 30 Nm