Replacing rear air spring

If the rear air spring is replaced, pay particular attention to the following points: 

Depending on the condition of the VOSS threaded joint (air line connection to air spring) fitted on the vehicle, the VOSS threaded joint can either be used again or replaced.

Using the same VOSS threaded joint on the vehicle: 

Information 

If you intend to re-use the VOSS threaded joint fitted on the vehicle, the VOSS threaded joint (including stopper and cutting ring) that comes pre-fitted on the new air spring must first be removed.

1. Pull stopper -1-  out of the new air spring.
2. Unscrew VOSS threaded joint -2-  on the new air spring.

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3. Remove cutting ring -1-  .

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4. Install new rear air spring (see "Installing rear air spring ").

Replacing VOSS threaded joint on the vehicle: 

1. Loosen the cutting ring -1-  on the air line -3-  using a suitable tool.
2. Pull VOSS threaded joint -2-  off the air line -3-  .

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   Information 

   Sharp edges at the end of the air line or at the point where the cutting ring is fitted can damage the newly fitted O-ring.

   For this reason, always de-burr the end of the air line.

   If there is also a sharp edge at the point where the cutting ring is fitted, the air line must be repaired.

   → 438541 REPAIRING AIR LINE 

3. Check air line for damage/leaks.

   Repair the air line if it is damaged → 438541 REPAIRING AIR LINE .

4. Pull stopper -1-  out of the new air spring.

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   Information 

   Before installation, the following parts must be pre-fitted on the air connection of the new air spring:

   • Cutting ring -1- 
     • VOSS threaded joint -2- 

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   Pull the air line briefly against the insertion direction. If it cannot be pulled out, the air line is fitted correctly.

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5. Install new rear air spring (see "Installing rear air spring ").

   Pay particular attention to the following when fitting the air line on the air spring: 

   • Insert air line as far as it will go.
   • To check that the air line is fitted correctly, pull it briefly against the insertion direction. If it cannot be pulled out or can only be pulled out with considerable effort, the air line is fitted correctly.