Air Line: Description and Operation

Air Line, Servicing

Special tools, testers and auxiliary items required

• Air Hose Pliers (VAS 6228)

• Torque Wrench (V.A.G 1783)

• Standard socket open end 12 mm

Defective air lines do not have to be completely replaced. Partial replacement of the air line is possible using a connector.

Allocation air pipe line/connector, refer to the Parts Catalog.

If the connection leaks, air line can be shortened by 10 mm and a new connecting piece installed. Refer to => [ Connecting Piece, Replacing ] Description and Operation.

• The air line between the air supply unit and the solenoid valve block is replaced completely with original line.

• The other air lines can be serviced with original lines. Original line should be shortened to appropriate lengths for this using (VAS 6228).

• Repair area must be protected from splash water, for example in vehicle interior or between wheel housing liner and wheel housing.

• The connector must be secured to the body or to a wiring conduit with cable ties.

• Clean separation point area before disconnecting air line connector.

• Contaminants entering the lines can lead to system malfunction.

- Clean connector piece area and corresponding separation point.

- Remove connector piece and air line.

- Then mark ends of air line in vehicle and both ends of new air line with a waterproof pen.






With 17 mm or 22 mm markings, check whether connector piece is inserted far enough in the air line.

- Install new line connector.

• Connector pieces in line connector are already tightened to proper torque. Air lines only have to be connected.

- Remove transport protection cap.

- Slide old air line through gaskets - 1 and 2 -.






- Then slide air line with some force through edges - 3 and 4 - of cutting rings as far as stop - 5 - in line connector.

- Repeat procedure with new air line.

- Connecting piece, replacing, refer to => [ Connecting Piece, Replacing ] Description and Operation.