Removing Rear Shock Absorber

Information 

Always use an intermediate layer (e.g. hard rubber) when using the jack!

1. Support wheel bearing housing using > VAS 6931 - Transmission and Engine Jack  .
2. Loosen holder for level sensor -2-  from the trailing arm.

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   Mounting for level sensor holder

   1. 2.1 Unscrew screw -1-  .
3. Loosen rear upper control arm -1-  on the wheel bearing housing.

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   Mounting for rear upper control arm on wheel bearing housing

   1. 3.1 Remove threaded joint -2-  .
4. Loosen threaded joints for trailing arm on rear axle housing (do not remove).

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   Mounting for trailing arm on rear axle housing

   1. 4.1 Mark the position of the eccentric screw -1-  .
   2. 4.2 Loosen eccentric threaded joint -1-  .

      Information 

      • Loosen or fit nut on the trailing arm using the specified tools. 
   3. 4.3 Loosen threaded joint -2-  .
5. Remove shock absorber -1-  on the body.

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   Mounting for shock absorber on body

   1. 5.1 Unscrew and remove screws -2-  .
6. Remove electric plug connection for PASM -1-  on the shock absorber -2-  .

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   Electric plug connection for PASM on shock absorber

   1. 6.1 > VAS 6931 - Transmission and Engine Jack  must be lowered slowly. Carefully guide the PASM line at the same time.
   2. 6.2 Release and disconnect electric plug connection for PASM.
   WARNING: Improper handling of fluid-carrying lines 

   • Escaping fluid 
   • System malfunction 
   • Risk of escaping fluid catching fire 

     → Do not kink, crush or twist the line

     → Avoid torsion and shearing

     → Fit the line carefully

7. > VAS 6931 - Transmission and Engine Jack  must be lowered further. Do not pull brake hose too tightly while doing so. Carefully guide shock absorber out of the wheel housing.

Installing rear shock absorber 

Information 

Recommendation for workshops replacing shock absorbers/spring dampers:

• 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. 

1. Place shock absorber in installation position.
2. Connect and lock electric plug connection for PASM -1-  on the shock absorber -2-  .

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   Electric plug connection for PASM on shock absorber

3. Fit shock absorber -1-  on the body.

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   Mounting for shock absorber on body

   1. 3.1 Tighten screws -2-  > Tightening torque 50 Nm (36.9 ftlb.) 
4. Tighten threaded joints in zero position.
   WARNING: Wheel bearing housing raised incorrectly 

   • Risk of crushing 
   • Risk of damage to components 

     → Wear personal protective gear.

     → Do not raise the wheel suspension higher than the normal vehicle position (vehicle resting on wheels).

   Information 

   Threaded joints must only be tightened in zero position to prevent warping in the bearings.

   1. 4.1 Lift the wheel bearing housing as far as required using > VAS 6931 - Transmission and Engine Jack  until the lower trailing arm is horizontal > Zero position 

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      Zero position

      Information 

      • Loosen or fit nut on the trailing arm using the specified tools. 
   2. 4.2 Tighten threaded joint securing trailing arm to rear axle housing -2-  > Initial tightening 70 Nm (52 ftlb.)  > Final tightening torque angle + 180° 

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      Mounting for trailing arm on rear axle housing

   3. 4.3 Tighten eccentric threaded joint securing trailing arm to rear axle housing -1-  > Tightening torque 160 Nm (118 ftlb.) 

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      Mounting for trailing arm on rear axle housing

   4. 4.4 Tighten threaded joint -2-  for upper control arm > Initial tightening 70 Nm (52 ftlb.)  > Final tightening torque angle + 90° 

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   Mounting for rear upper control arm on wheel bearing housing

5. Secure holder for level sensor -2-  to the trailing arm.

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   Mounting for level sensor holder

   1. 5.1 Tighten screw -1-  > Initial tightening 3 Nm (2 ftlb.)  > Final tightening + 45°