Removing
1. Install the car in "Service mode" (only on vehicles with air suspension). Press button 1 on the bottom for about 2 seconds before lifting.
2. Raise and secure the vehicle. Pneumatic chambers must be free.
3. Unscrew the bolts 5 fastening the pneumatic chamber 7 (see fig.7.17).
Pic. 7.17. Air chamber (vehicles 638.0/1 and 638.2 with rear air suspension):
1. Service button,
2. Adjusting lever,
3. Rise height sensor,
4. Lower arm,
5. Bolts,
6. Injection tube,
7. Pneumatic chamber.
4. Disconnect the injection tube 6 from the pneumatic chamber 7.