Leak Detection Pump: Service and Repair

WM 204819 Removing and installing leakage diagnosis pump

Preliminary work

1. Remove carbon canister. -> 202519 Removing and installing carbon canister - section on "Removing" Service and Repair.

Removal

Removing leakage diagnosis pump

1. Unclip sheetmetal clips -1- on carbon canister with a screwdriver.





Sheetmetal clips on carbon canister

2. Carefully open the carbon canister using a rigid spatula or a wide screwdriver. -arrows-





Opening carbon canister

3. Remove active carbon unit and lid.
4. Unscrew internal Torx screw -1- and pull off air filter.





Air filter for leakage diagnosis pump

5. Unscrew three internal Torx screws -1- used to secure the leakage diagnosis pump -3-.
Open the clamp -2- and pull off the hose.





Leakage diagnosis pump mounting

6. Pull off cable plug for leakage diagnosis pump and remove carbon canister lid.
7. Remove leakage diagnosis pump.

Installation

Installing leakage diagnosis pump

1. Install leakage diagnosis pump.
2. Fit three internal Torx screws -1- used to secure the leakage diagnosis pump -3- and tighten hand-tight.
2.1. Fit hose and secure the clamp -2-.





Leakage diagnosis pump mounting

3. Fit air filter and tighten internal Torx screw -1- by hand.





Air filter for leakage diagnosis pump

4. Plug in cable plug for leakage diagnosis pump and position carbon canister lid.
5. Insert active carbon unit into the canister and lock the lid.
6. Clip in sheetmetal clips -1- used to lock the carbon canister.





Sheetmetal clips on carbon canister

Subsequent work

1. Install carbon canister. -> 202519 Removing and installing carbon canister - section on "Installing" Service and Repair.