Leak Detection Pump: Service and Repair

WM 204819 Removing and installing leakage diagnosis pump

Preliminary work

-> 20251900 Removing and installing carbon canister - section on "Removing" Service and Repair

Removal

Removing leakage diagnosis pump

1. Unclip sheetmetal clips on carbon canister -1- 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 Torx screw -1- and pull off air filter.





Air filter for leakage diagnosis pump

5. Unscrew three 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. Position leakage diagnosis pump.
2. Screw in three Torx screws -1- used to secure the leakage diagnosis pump -3-.
Fit hose and secure the clamp -2-.





Leakage diagnosis pump mounting

3. Fit air filter and tighten Torx screw -1-.





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

-> 20251900 Removing and installing carbon canister - section on "Installing" Service and Repair