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Front wheel hub

Front wheel hub

To remove


Important

The bearing is destroyed on removal.



1. Undo the hub centre-nut when the car is standing on all four wheels.

2. Raise the car. If a jack is used, the car must be supported on axle stands.

3. Remove the wheel.

4. Remove the hub centre-nut completely.

5. Push back the brake piston using adjustable pliers. Remove the brake caliper from the spindle housing and hang it on the spring with a piece of suitable steel wire.

6. Remove the brake disc retaining bolt and the brake disc.


7. Remove the screw securing the ABS sensor and lift up the sensor.

8. Remove the nut securing the track rod end and remove the track rod using 89 96 696 Puller .


9. Remove the bolts securing the steering swivel member to the spring strut. Put the bracket for the cable to the ABS sensor and brake hose to one side.

10. Remove the bolts securing the steering swivel member's ball joint to the steering swivel member.


11. Remove the bolts of the disc back plate through the holes in the hub and then remove the disc back plate.


12. Remove the ABS sensor holder.

13. Tap out the drive shaft from the hub using a plastic hammer.

14. Remove the steering swivel member.


15. Press out the hub with 89 96 704 Drift, front wheel bearing (with KM-500-5).

16. Remove the circlip.


17. Press out the bearing with 89 96 704 Drift, front wheel bearing (with KM-500-2 and KM-500-3).



To fit



1. Lubricate the bearing surface in the steering swivel member with 87 81 684 Universal paste and press in a new bearing with 89 96 704 Drift, front wheel bearing (with KM-500-4 and KM-500-5).

2. Fit the circlip with the opening pointing downwards.


3. Press in the hub with 89 96 704 Drift, front wheel bearing (with KM-500-3 and KM-500-5).


4. Fit the drive shaft in the hub and push it home with a new hub centre-nut.

Important

Always fit a new hub-centre nut if it has been removed because the clamping force of the lock indentations will be reduced if the old one is refitted.

Use a nut with top groove.


5. Fit the ABS sensor holder and the brake shield.


6. Fit the steering swivel member ball-joint in the steering swivel member and the bolt securing the steering swivel member to the ball-joint. Fit the nut. Make sure that the bolt fits in the recess on the steering swivel member ball-joint.


Warning

Make sure that the journal on the ball-joint is protruding above the steering swivel member mounting.


7. Press the steering swivel member into the spring strut and fit the bracket for the ABS sensor cable and brake hose in place. Press the steering swivel member inwards and tighten the bolts securing the steering swivel member to the spring strut.

Tightening torque: 100 Nm +45° (75 lbf ft +45°)

8. Tighten the bolt securing the steering swivel member to the steering swivel member ball-joint.

Tightening torque: 95 Nm (70 lbf ft)

9. Fit the track rod end to the steering swivel member and tighten the nut.

Tightening torque: 60 Nm (45 lbf ft)

10. Fit the ABS sensor.


11. Fit the brake disc in place and tighten the brake disc retaining screw.

12. Make sure that the brake piston is pressed back in the cylinder and then fit the brake caliper using 74 96 268 Thread locking adhesive on the bolts to the steering swivel member.


Tightening torque: 110 Nm (80 lbf ft)

13. Fit the wheel .

Tightening torques

aluminium rim 110 Nm (81 lbf ft)

pressed steel rim 50 Nm +2x90°, max. 110 Nm (37 lbf ft +2x90°, max. 81 lbf ft)

14. Lower the car and fit a new hub centre-nut when the car is standing on all four wheels.

Tightening torque: 170 Nm +45° (125 lbf ft +45°).

15. Depress the brake pedal to press out the pistons in the brake calipers.