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Rear-wheel sensors

Rear-wheel sensors

To remove



1. Raise the car and remove the wheel.

2. Press back the brake pistons using a pair of slip-joint pliers.

3. Remove the brake-pipe bracket from the longitudinal link.


4. Undo the caliper securing bolts and suspend the caliper with a cable tie.

5. Back off the adjustment for the handbrake shoes. It is accessible through a hole in the brake disc.


6. Undo the retaining screw and remove the disc.


7. Unplug the connector for the ABS sensor.

8. Remove the four wheel-hub nuts.

9. Remove the hub complete with backplate. Leave the disc backplate and handbrake assembly hanging on the cable.


To fit


1. Clean the contact surfaces using a wire brush.


2. Position the hub in the disc backplate and fit it to the longitudinal link. Use new nuts and tighten them alternately in opposite pairs.

Tightening torque 50 Nm +30° (37 lbf ft +30°)

3. Plug the connector into the ABS sensor.

4. Fit the brake disc onto the hub, apply thread-locking fluid and tighten the screw.

5. Fit the brake caliper, apply thread-locking fluid and tighten the bolts.


6. Fit the brake-pipe bracket to the longitudinal link.

7. Turn the handbrake adjuster until the shoes prevent the disc from turning. Accessible through the hole in the disc.


8. Now back off the adjuster until the disc can be rotated.

9. Fit the wheel. See Wheels .

Tightening torques

aluminium wheel 110 Nm (81 lbf ft)

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

10. Lower the car.

11. Pump the brake pedal to extend the pistons in the calipers.

12. Adjust the parking brake cable, see Adjusting the parking brake cable .