Fuel gauge sender unit — removal and refitting (Peugeot 106)

Note: Refer to the warning note in Section 1 before proceeding.

Removal

1. Disconnect the battery negative terminal (refer to "Disconnecting the battery").

2. For access to the sender unit, fold the rear seat cushion forwards.

3. Using a screwdriver, carefully prise the plastic access cover from the floor to expose the sender unit. It is located under the lefthand cover (see illustration).



4. Disconnect the wiring connector from the sender unit and tape the connector to the vehicle body to prevent it from disappearing behind the tank (see illustration).





5. Mark the hoses for identification purposes, then slacken the feed and return hose retaining clips. Where the crimped-type hose clips are fitted, cut the clips and discard them; use worm-drive hose clips on refitting. Disconnect both hoses from the top of the sender unit and plug the hose ends.

6. On some models, quick-release fittings may be fitted to the fuel hoses; these are released by depressing their metal collars with a small flat-bladed screwdriver.

7. Noting the alignment marks on the tank, sender unit and the locking ring, unscrew the ring and remove it from the tank. This is best accomplished by using a screwdriver on the raised ribs of the locking ring. Carefully tap the screwdriver to turn the ring anti-clockwise until it can be unscrewed by hand (see illustrations).







8. Carefully lift the sender unit from the top of the fuel tank, taking great care not to bend the sender unit float arm, or to spill fuel onto the interior of the vehicle. Recover the rubber sealing ring and discard it - a new one must be used on refitting (see illustrations).

Refitting

9. Refitting is a reversal of the removal procedure, noting the following points:

• a) Prior to refitting, fit a new rubber sealing ring to the sender unit.
• b) Refit the sender unit to the tank, aligning its arrow with the centre of the three alignment marks on the fuel tank. Secure the sender in position with the locking ring and check that the locking ring, sender unit and fuel tank marks are all correctly aligned.
• c) Ensure the feed and return hoses are correctly reconnected and securely retained by their clips.