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Rear-wheel sensors

Rear-wheel sensors

To remove



1. Raise the car and remove the wheel.

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

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


4. Undo the caliper assembly securing bolts and hang the assembly in a cable tie.

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


6. Remove the bolt securing the brake disc and remove the brake disc.


7. Unplug the ABS sensor.

8. Remove the four wheel-hub nuts.

9. Lift off 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. Insert the hub inside 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.

Tightening torque 10 Nm (7.4 lbf ft)

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

Tightening torque 80 Nm (59 lbf ft)


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

7. Turn the handbrake adjuster (accessible through the hole in the disc) until the shoes prevent the disc from turning.


8. Back off the adjuster until the disc can be spun freely.

9. Fit the wheel. Refer to Wheels . The wheel must hang freely when the wheel bolts are being tightened.

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 handbrake cable, see “Handbrake system”.