Air Supply Unit

Air Supply Unit

Special tools, testers and auxiliary items required

• Torque Wrench (V.A.G 1783)

Removing

- Remove the bracket and air supply unit. Refer to => [ Air Supply Unit Bracket ] Air Supply Unit Bracket.

• Make sure no dirt gets into the pressure air system.

• Clean the area before removing connecting pieces for the air pipe lines or other components of the pressured air system.

• Seal off any open air lines and connections in the pressure system immediately with plugs or cover them.

- Loosen the air line and electric wire out of the clip - 1 -.






- Remove the threaded sleeve - arrows - and the air supply unit - 2 -.

Installing

Install in reverse order of removal. Note the following:

• The vehicle may be removed from the vehicle hoist only after the air springs have been filled again. Refer to => [ Raising and Lowering ] Description and Operation.

• Make sure the positioning pin on the air spring is installed correctly inside the body before filling the air suspension system. The air spring must be locked secure inside the wheel bearing housing at the same time. Refer to => [ Air Spring Installed Position ] Air Spring Overview.

Tightening specifications, refer to => [ Air Supply Unit Overview ] Air Supply Unit Overview.

Tightening specifications, refer to => [ Air Line Connecting Pieces Tightening Specification ] Air Line Connecting Pieces Tightening Specification.

If the air supply unit was replaced, then the level control system compressor relay (J403) must also be replaced.