Installing Front Air-Spring Strut

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 

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Air-spring strut holder

• Never carry the spring strut by the holder -1-  . If the holder is bent, there is a risk of collision while driving. 

Information 

The help of another person is required for this work.

1. Installation is performed in reverse order. Pay particular attention to the following:
   Fig 1: Body Mounting Saddle Screws Tightening Sequence

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   Tightening sequence for mounting saddle to body

   1. 1.1 Tighten nuts securing air-spring strut to mounting saddle.

      > Tightening - torque 30 Nm (22 ftlb.) 

   2. 1.2 Replace screws securing mounting saddle to the body -1 to 4-  .
   3. 1.3 Tighten screws securing mounting saddle to the body in the sequence -1 to 4-  .

      > Initial - tightening 40 Nm (30 ftlb.) 

      > Final tightening + 90° 

   4. 1.4 Tighten air line on air-spring strut.

      > Tightening - torque 3 Nm (2 ftlb.) 

   5. 1.5 Only for removing the right air-spring strut: 

      Tighten nuts on air inlet housing cover.

      > Tightening - torque 3.5 Nm (2.5 ftlb.) 

2. Position DME control unit -1-  and secure with retaining lugs -2-  .

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   DME control unit