Installing Air Bellows

NOTIFICATION 

Air springs can become kinked/fall out 

• Risk of damage to air springs 

  → Deactivate the levelling system before raising the vehicle.

  → Check the bellows before lowering the vehicle.

Information 

Recommendation for workshops replacing shock absorbers for workshops:

• Dampers can be replaced separately up to a mileage of 30, 000 km or 3 years. 
• If the mileage is > 30, 000 km or the components are more than 3 years old, we recommend replacing them in pairs. 

Information 

Check the following before installing the air line:

• Check that the cutting ring -1-  and Voss threaded joint -2-  are on the air line -3-  (not relevant if the air spring bellows was replaced and the Voss threaded joint that is pre-fitted on the air spring bellows is used).
• Check that the air line is fitted correctly.

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Checking air line

Only one marking -1-  on the air line should be visible.

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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Checking that air line is fitted correctly

Information 

To prevent damage to the air suspension bellows, pay particular attention to the following points when handling air suspension bellows:

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Length l of air suspension bellows

• The air spring bellows must never be bled completely. This applies to both installed and removed air spring bellows. 
• Air spring bellows must only be bled as described under 

  > 430117 - BLEEDING AND FILLING THE LEVELLING SYSTEM 

• An air suspension bellows is depressurised if the pressure is less than 1.5 bar. 
• The air suspension bellows must not be pulled apart. 
• The air suspension bellows must not be bent. 
• The air suspension bellows must not be carried at the insertion pin. 
• The air suspension bellows must not be squeezed together to a length l less than 220 mm. 
• The vehicle must never be lowered when the levelling system is empty. 
• Air suspension bellows must be installed in the vehicle within one year. 

1. Installation is performed in reverse order. Pay particular attention to the following:
   1. 1.1 Ensure correct seating -Arrow-  of the air bellows -1-  in the supports.

      Air bellows must not be bent or twisted! 

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      Seating of air bellows

   2. 1.2 Tighten union nut securing air line -2-  to air bellows.

      > Tightening - torque 3 Nm (2 ftlb.) 

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      Air line for air bellows