Clutch Master Cylinder: Service and Repair

21 52 500 - Removing and installing/replacing clutch master cylinder





Note:
After completing work, bleed clutch hydraulic system Service and Repair.





Necessary preliminary tasks:
- Remove trim panel 51 45 185 Removing and Installing/Replacing Panel For Pedals for pedal assembly.
- Remove microfilter housing Removing and Installing/Replacing Left or Right Microfilter Housing Lower Section on left.
- Remove light module Service and Repair.





Draw off brake fluid up to supply hose of clutch hydraulic system (1). For this purpose, use only a vacuum pipe that is exclusively used for removing brake fluid.
Detach supply hose (1) from expansion tank.





Disconnect spring (1).

Note:
Illustration shows component removed.





Remove retainer (1) using screwdriver and press out pin.





Detach retainer (1) with a screwdriver (2).

Note:
Do not foul carpet with brake fluid.

Detach hydraulic line from clutch master cylinder.





Remove lock (1) from pin with aid of screwdriver (2).
Lever out pin (3) with aid of screwdriver.
Remove clutch master cylinder.

Installation Note:
Replace pin.
Press in pin until lock (1) can be seen to snap into place.





Detach supply hose (1) from clutch master cylinder.

Important!
Do not pull supply hose completely into interior.





Lever out shift element (1) from clutch master cylinder (2) with screwdriver.
Release plug connection (3) and disconnect plug (4) from shift element (1).





Installation Note:
Shift element is secured against incorrect installation.
Shift element must snap audibly into place.