Rear Knuckle: Service and Repair: Overview

Front Wheel Drive (FWD)

Wheel Bearing Housing and Trailing Arm Assembly Overview





1 Cover

2 Mounting Bracket

3 Coupling Rod

• Connects stabilizer to trailing link/wheel bearing housing.

4 Bolt

• Follow the tightening sequence

• M12 x 1.5 x 40

• 90 Nm + 45° turn

• Always replace after removal.

5 Trailing Arm

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

• Removing and installing. Refer to => [ Trailing Arm with Mounting Bracket ] Front Wheel Drive (FWD).

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

• 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 Bolt

• M6 x 16

• 8 Nm

7 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).

8 Wheel Bearing Housing

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

9 Bonded Rubber Bearing

• Replacing, refer to => [ Wheel Bearing Housing Bonded Rubber Bushing ] Front Wheel Drive (FWD).

10 Washer

• The washer chamfer must face outward.

11 Nut

• 45 Nm

• Always replace after removal.

12 Brake Disc

13 Bolt

• 4 Nm

14 Dust Cap

• Always replace after removal.

• Pressing off and driving in. Refer to => [ Wheel Bearing and Wheel Hub ] Front Wheel Drive (FWD).

• An appropriate seal can only be achieved with a new dust cap.

15 Bolt

• Loosen and tighten using bit XZN 18 (T10162).

• M16 x 1.5 x 70

• 200 Nm + 180° turn

• Always replace after removal.

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 ] Front Wheel Drive (FWD).

Wheel bearing and wheel hub are installed together.

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

17 Bolt

• M6 x 10

• 12 Nm

18 Cover Plate

19 Bolt

• M12 x 1.5 x 80

• 90 Nm + 90° turn

• Always replace after removal.

20 Bonded Rubber Bearing

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

21 Bolt

• M10 x 35

• 50 Nm + 45° turn

• Always replace after removal.