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Clutch actuator unit with master cylinder

Clutch actuator unit with master cylinder

Dismantling



1. Turn the ignition switch to the OFF position and remove the battery.

2. Remove the pressure pipe between the charge air cooler and throttle body and seal the hose to prevent dirt from entering it.

3. Lift up the power steering fluid reservoir and turn it to one side.

4. Unplug the three sensor connectors.

5. Press the connectors out of the holder.

6. Undo the three bolts and lift out the holder.

7. Unplug the CA unit's connector.

8. Unscrew the bolts securing the battery tray.


9. Remove the remaining bolts securing the CA unit.

10. Undo the maxifuse fuse box and move it aside.

11. Remove the cap on the CA unit and check that the CA unit's worm gear is in the engaged position (position E). If it is not, rotate it to the engaged position using a torque wrench set for 20 Nm.

12. Drain the hydraulic system, using tool 88 19 096.


13. Undo the master cylinder's pressure pipe and collect the two sealing washers.


14. Disconnect the master cylinder's feed hose.

15. Remove the clip securing the pressure pipe to the CA unit's holder.

16. Lift out the CA unit.



To refit



1. Correctly position the clutch actuator unit and fit the clip securing the delivery pipe to the actuator unit's holder.

2. Reconnect the master cylinder's feed hose.

3. Connect the master cylinder's delivery pipe and fit the rubber dust excluder.

4. Fit the maxifuse fuse box back in place.


5. Tighten the screws securing the clutch actuator unit.

6. Fit the bolts securing the battery tray.

7. Plug in the CA unit's connector.

8. Fit the wiring harness in place, press the connectors into the holder and tighten the holder's three retaining screws.


9. Plug in the three sensor connectors.

10. Refit the power steering fluid reservoir.

11. Bleed the system, see .

12. Fit the delivery pipe between charge air cooler and the throttle body.

13. Put the battery back in place and connect its cables.

14. Drive the car on test and adapt the slip point, see .

Important

After work has been carried out on the clutch actuator unit, hydraulic system, clutch, etc., the clutch may exhibit a tendency to snatch. This should normally disappear after adaptation of the slip point.