Contents: Removal ↡ Installation ↡
Warning: When handling parts of the power supply system, observe the precautions outlined in paragraph 1. The following operation must be carried out in a well-ventilated area.
Removal
1. If the gas tank is full, to avoid spilling gasoline, before starting work, it is necessary to drain at least 8 liters of gasoline. This is especially important when the sensor is faulty and you are not sure how much gasoline is in the gas tank. It is best to carry out this operation when the gas tank is empty.
2. Disconnect the negative battery terminal.
3. Remove the luggage compartment carpet, then release the retaining clips and open the fuel filler flap - for more information, refer to Chapter 11.
4. Disconnect the connector from the top of the sensor assembly (see fig. 5.4). Secure the plug with rope or wire to prevent it from sliding down behind the gas tank.
(Material created based on the website: «www.mercedesman.ru»)
Fig. 5.4. Fuel level sensor unit
A Plug
In Fastening nut
5. Loosen the large mounting nut and lift the sensor out of the gas tank - allow the gas to drain into the tank for a few seconds before removing the sensor completely.
6. Remove the sealing rings from the gas tank opening and discard them - new ones must be used during installation.
Installation
7. Installation is carried out in reverse order, taking into account the following points:
- a) If installing a new sensor, remove the protective tape and remove the retainer before installing the unit to the fuel tank.
- b) Replace the gas tank hole sealing rings.
- c) Tighten the sensor assembly mounting nut securely.
- d) Check that the sensor wire plug is connected securely.
- d) Before installing the decorative panels and mat, check with a test drive that there are no gasoline leaks around the sensor area.