Removing And Installing Spring Strut, Rear: Notes

The rear spring strut can only be removed and installed together with the wheel carrier. 

1. Remove brake-disc air guide.

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   Brake air spoiler mounting

   1. 1.1 Unscrew screws -1-  .
   2. 1.2 Move brake-disc air guide in direction of travel -Arrow A-  and remove by pulling downwards -Arrow B-  .

   Information 

   • The rear brake calliper must be removed so that the brake hose does not become strained or damaged on wheel suspension parts during assembly work. 
   • Do not open the brake hydraulic system (brake line remains connected). 

   Information 

   Never use power tools (impact bolter) for loosening and securing the brake calliper on the wheel bearing housing.

2. Removing brake calliper rear with line bracket.

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   Bracket on wheel carrier

   1. 2.1 Release and disconnect electric plug connection for electric parking brake (EPB) -1-  and unclip if from the cable retainer -2-  .
   2. 2.2 Release and pull off electric plug connection for rpm sensor -3-  .
   3. 2.3 Release and disconnect electric plug connection for PASM -4-  and unclip cable retainer -5-  from holder -7-  .
   4. 2.4 Unscrew screws -6-  securing holder to wheel bearing housing.
   5. 2.5 Evenly set back brake pads a little using water pump pliers.
   6. 2.6 Unscrew screws on brake calliper -Arrows-  . Replace damaged bolts.

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      Brake calliper screws

   7. 2.7 Remove the brake calliper together with the holder from the wheel bearing housing and hang it at a suitable position in the wheel housing using a tie-wrap or a piece of wire. Make sure that the brake pressure line is not strained.
3. Detach toe control arm and rear trailing arm.
   1. 3.1 Unscrew collar nut -1-  .

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      Detaching toe control arm and trailing arm

   2. 3.2 Pull off toe control arm -2-  using puller > 9560 - Press-out tool-3-  on the wheel carrier.
   3. 3.3 Remove screw -4-  from trailing arm -5-  .
4. Loosen anti-roll bar.

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   Connecting link to anti-roll bar

   1. 4.1 Unscrew collar nut -1-  and pull off connecting link -2-  on the anti-roll bar.
5. Loosen drive shaft at wheel carrier.

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   Drive shaft extractor

   1. 5.1 Carefully press out the drive shaft peg using a > Nr.87-1 Pos.1 - puller set  until you can move the shaft with your hand.

   Fit a protective tube on the drive shaft to prevent damage to the drive shaft.

6. Loosen and remove upper spring strut. Support the drive shaft when taking it out of the wheel carrier and tie immediately to a suitable location. Get another person to help you with this.
   1. 6.1 Unscrew three collar nuts -1-  on the spring-strut mount at the top.

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      Collar nuts on upper spring strut

   2. 6.2 Lower the spring strut and the wheel carrier out of the vehicle.

   On vehicles with PCCB brake discs, make sure not to damage the brake disc during removal.

   > 465402 Checking rear PCCB brake discs (wear assessment) - section on  "CHECKING ".

   After removing the drive shaft from the wheel carrier, tie it immediately to a suitable location.

7. Loosen clamped connection between spring strut/wheel carrier. Pull spring strut out of wheel carrier.

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Spring strut in wheel carrier

1. 7.1 Screw off collar nut -5-  and pull out connecting link (suspension/stabilizer) -3-  .

   Counter at the hexagon wrench face of the connecting link -Arrow-  when loosening the fastening nut.

2. 7.2 Unscrew collar nut -6-  , pull out clamping screw -2-  and pull spring strut -1-  out of the wheel carrier -4-  .