Trailing Arm: Service and Repair: Overview

All Wheel Drive (AWD)

Wheel Bearing Housing and Trailing Arm Assembly Overview

The - arrow - points in driving direction.





1 Cover

2 Mounting Bracket

3 Coupling Rod

• Connects stabilizer to trailing link/wheel bearing housing.

4 Bolt

• 90 Nm + 45° turn

• Observe tightening sequence. Refer to => [ Position: Threaded Connection
of Trailing Link/Wheel Bearing Housing ] All Wheel Drive (AWD).

• Always replace after removal.

5 Trailing Arm

• Different versions. Refer to => [ Trailing Arm Characteristics ] Application and ID.

• Removing and installing, refer to => [ Trailing Arm with Mounting Bracket ] All Wheel Drive (AWD).

• Servicing, refer to => [ Trailing Arm Bonded Rubber Bushing ] All Wheel Drive (AWD).

• Note the tie rod allocation when replacing them. Refer to => [ Note the allocation of the
tie rods for the trailing arms ] Application and ID.

6 Drive Axle

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

• Removing and installing, refer to => [ Drive Axle ] All Wheel Drive (AWD).

7 Bolt

• M14 x 1.5 x 45

• 70 Nm + 90° turn

• Always replace after removal.

8 Wheel Bearing Housing

• Removing and installing, refer to => [ Wheel Bearing Housing ] All Wheel Drive (AWD).

9 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).

10 Bolt

• M6 x 16

• 8 Nm

11 Bonded Rubber Bearing

• Replace, refer to => [ Wheel Bearing Housing Bonded Rubber Bushing ] All Wheel Drive (AWD).

12 Nut

• M12 x 25

• 45 Nm

• Self-locking.

• Always replace after removal.

13 Brake Disc

14 Bolt

• 4 Nm

15 Bolt

• Always replace after removal.

• Loosening and tightening the hex bolt, refer to => [ Drive Axle Hex Bolt Connection, Loosening and Tightening ].

• Loosening and tightening the twelve-point bolt, refer to => [ Drive Axle Twelve-Point Bolt, Loosening and Tightening ].

16 Wheel Hub with Wheel Bearing

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

• Removing and installing, refer to => [ Wheel Bearing and Wheel Hub ] All Wheel Drive (AWD).

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

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

17 Bolt

• M6 x 12

• 12 Nm

18 Cover Plate

19 Bolt

• M12 x 1.5 x 80

• 90 Nm + 90° turn

• Always replace after removal.

20 Bonded Rubber Bushing

• Replacing, refer to => [ Trailing Arm Bonded Rubber Bushing ] All Wheel Drive (AWD).

21 Bolt

• M10 x 35

• 50 Nm + 45° turn

• Always replace after removal.