Air Spring Damper, Filling

Air Spring Damper, Filling

Special tools, testers and auxiliary items required

• Adapter (T10157)

• Air suspension strut charger (VAS 6231)

• Steel gas bottle filled with argon or corgon

• Air spring dampers are supplied as replacement parts with a minimum pressure. By sitting in storage for extended periods this pressure can diminish (just like a tire). This minimum pressure must be checked and if necessary restored by recharging before the air spring damper is removed from the packaging. If the air spring damper is removed from the packaging without this checking/recharging, this may cause indentations or kinks to form in the dust boot before it reaches its normal shape. These folds can cause damage and premature failure of the air spring.

- Remove the cover from the packaging.

- Remove the union bolt - arrow - from the residual pressure holding valve.





- Close the valve on the steel gas bottle.

- Become familiar with the relevant rules for the prevention of accidents for pressurized containers and technical gases.

- Connect the (VAS 6231) and the (T10157) as shown in the illustration.





1. Air spring shock absorber in packaging

2. Steel gas bottle for argon, or corgon with gauges

3. (VAS 6231)

4. (T10157)

• The air spring damper (air suspension) can only be filled with the gases listed so that no "unfiltered" air can get into the air suspension system.

- Set the flow rate limiter gauge to 2.0 L/min - arrow -.





- Now fill the air spring damper with the gas using several individual pressure bursts.

The display only shows a correct pressure if the back pressure of the residual pressure retaining valve is overcome. The back pressure is at approximately 3.5 bar. The air spring damper is filled with enough gas when the pressure reaches 3.5 to 4.5 bar.





- Make sure the pressure does not exceed 4.5 bar when filling.

- Disconnect the (VAS 6231) from the (T10157), gas escapes at a pressure above 3.5 bar.

Minimum pressure is now reestablished. You can remove the air spring damper from the packaging.

- After installation, drive the vehicle at high ride height and then at normal ride height. Repeat this sequence once more.

By moving the ride height settings twice, the majority of the gas is exchanged with filtered air from the air supply motor.

- Install the air spring damper. Refer to => [ Installing ] Air Spring Damper.