Removing Front Wheel Bearing Housing

Information 

• If assembly work was performed or parts were replaced that affect the vehicle height, complete suspension alignment is necessary. 
• Protect electric lines when removing and installing the spring strut on vehicles with PASM. 
• Do not lift/transport the spring strut/vibration damper at the electric line. 
• The ignition must be switched off before disconnecting the plug connection (PASM) for the spring strut. 
• The spring strut and wheel bearing housing are removed from the vehicle together. 
• A helper is needed in order to take out the spring strut/wheel bearing housing. 

1. Remove front brake calliper with line bracket.

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   Holder on wheel carrier

   1. 1.1 Release and disconnect electric plug connection for rpm sensor -1-  .
   2. 1.2 Release and disconnect electric plug connection for PASM -2-  .
   3. 1.3 Unscrew screws -3-  securing holder to wheel bearing housing.
   4. 1.4 Evenly set back brake pads a little using water pump pliers.
   5. 1.5 Unscrew and remove screws -Arrows-  .

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      Brake calliper screws (shown as an example)

   6. 1.6 Remove brake calliper together with the holder from the wheel bearing housing and hang it at a suitable position in the wheel housing using a piece of wire, for example. Make sure that the brake pressure line is not strained.
2. Unscrew screws -Arrows-  and remove brake disc.

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   Brake disc screws

3. Remove connecting link -1-  from wheel bearing housing.

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   Spring strut to wheel bearing housing

   1. 3.1 Unscrew collar nut -2-  and pull out connecting link -1-  .

      Counter at the hexagon wrench face of the connecting link -arrow-  when loosening the collar nut.

4. Loosen collar nut on the tie-rod ball -1-  at the wheel bearing housing and press off ball joint using special tool > 9560 - press-out tool  .

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   Removing ball joint

5. Remove lower trailing arm -5-  at the wheel carrier.

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   Mounting for lower trailing arm

   1. 5.1 Remove level sensor linkage at the holder -1-  .
      1. 5.1.1 Unscrew nut and counter at the square part of the ball joint while doing this.
      2. 5.1.2 Pull linkage out of the holder.
   2. 5.2 Unscrew screw -2-  .
6. Mark installation position of the spring-strut mount (position of the collar nuts -1-2-3-  ). Loosen lock nuts on the spring-strut mount.

   Secure the wheel bearing housing to prevent it from falling down! 

   Fig 1: Spring-Strut Mount Nuts Loosening Sequence

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   Installation position of spring-strut mount

7. Pull out/remove spring strut with wheel bearing housing.
8. Loosen clamped connection between spring strut and wheel bearing housing.

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Spring strut to wheel bearing housing

1. 8.1 Unscrew screw -3-  .
2. 8.2 Pull spring strut out of the wheel carrier.