Wheel Bearing Housing and Trailing Arm Assembly Overview

Wheel Bearing Housing and Trailing Arm Assembly Overview

The - arrow - points in driving direction.






1 Mounting Bracket

2 Cover

3 Bolt

• 90 Nm + 90° turn

• Always replace if removed.

4 Coupling Rod

• Connects stabilizer to trailing link/wheel bearing housing.

5 Bolt

• 90 Nm + 90° turn

• Observe tightening sequence. Refer to => [ Position: Threaded Connection of Trailing Arm/Wheel Bearing Housing ] Wheel Bearing Housing.

• Always replace if removed.

6 Trailing Arm

• Removing and installing, refer to => [ Trailing Arm with Mounting Bracket ] Trailing Arm With Mounting Bracket.

• Servicing, refer to => [ Trailing Arm Bonded Rubber Bushing ] Trailing Arm Bonded Rubber Bushing.

7 Drive Axle

• Assembly overview, refer to => [ Drive Axle Assembly Overview ] Drive Axle Assembly Overview.

• Removing and installing, refer to => [ Drive Axle ] Drive Axle.

8 Bolt

• 70 Nm + 90° turn

• Always replace if removed.

9 Wheel Bearing Housing

• Removing and installing, refer to => [ Wheel Bearing Housing ] Wheel Bearing Housing.

10 Right Rear ABS Wheel Speed Sensor (G44) / Left Rear ABS Wheel Speed Sensor (G46)

• Can be tested in Guided Fault Finding using the Vehicle diagnosis, testing and information system (VAS 5051).

• Before inserting sensor, clean inner surface of mounting hole and coat with Polycarbamide grease (G 000 650).

11 Bolt

• 8 Nm

12 Bonded Rubber Bushing

• Replacing, refer to => [ Wheel Bearing Housing Bonded Rubber Bushing ] Wheel Bearing Housing Bonded Rubber Bushing.

13 Nut

• 45 Nm

• Self-locking

• Always replace if removed.

14 Bolt

• 50 Nm + 90° turn

• Always replace if removed.

15 Bolt

• 4 Nm

16 Brake Disc

17 Bolt

• Various versions.

• For the correct allocation, refer to the Electronic Parts Catalog (ETKA).


• There are 2 types of twelve-point bolts, with and without ribs.

• When installing a twelve-point bolt, always check what type of twelve-point bolt is to be used.

• Use the correct tightening specification for the specific bolt.

• The tightening specification for a twelve-point bolt with ribs is 70 Nm + 90° turn. For loosening and tightening specifications, refer to => [ Drive Axle Twelve-Point Bolt with Ribs, Loosening and Tightening ] Drive Axle Twelve-Point Bolt With Ribs, Loosening and Tightening.

• The tightening specification for a twelve-point bolt without ribs is 200 Nm + 180° turn. For loosening and tightening specifications, refer to => [ Drive Axle Twelve-Point Bolt with Ribs, Loosening and Tightening ] Drive Axle Twelve-Point Bolt With Ribs, Loosening and Tightening.

• Always replace if removed.

18 Wheel Hub with Wheel Bearing

• The ABS sensor ring is installed in the wheel bearing.

• Removing and installing, refer to => [ Wheel Bearing Housing ] Wheel Bearing Housing.

• The wheel bearing and wheel hub are installed together in a housing.

• This wheel bearing/hub unit is maintenance and adjustment free. Adjusting or servicing is not possible!

19 Bolt

• 12 Nm

20 Cover Plate

Differences Between a Twelve-Point Bolt with Ribs and a Twelve-Point Bolt without Ribs






The contact surfaces - arrow A - and - arrow B - are different on the two-point bolts.

I Twelve-point bolt with ribs - arrow A -
II Twelve-point bolt without ribs - arrow B -