Removing and Installing/Replacing Master Brake Cylinder for DSC

34 31 505 - Removing and installing / replacing master brake cylinder for DSC





Special tools required:
- 32 1 270 32 1 270 Plugs (Set)





Necessary preliminary tasks:
- Remove expansion tank Removing and Installing/Replacing Expansion Tank for Hydraulic Brake Actuation.
- Remove footwell trim 51 45 185 Removing and Installing/Replacing Panel For Pedals.
- Read and comply with General Information Service and Repair.

After completing tasks, bleed brake system with DSC Bleeding Brake System with DSC.





Remove locking clip (1) and disengage and pull out locking pin.

Slacken nuts (2).

Installation:
Replace self-locking nuts.

Tightening torque 35 11 1AZ 35 11 Pedal Assembly Console.





Unfasten brake lines (1).

Detach brake lines at junction (2) and remove short sections.

Seal off brake lines and brake master cylinder with plugs 32 1 270 32 1 270 Plugs (Set).

Installation Note:
Fit lines at both connection points and then tighten down.

Tightening torque 34 32 1AZ 34 32 Brake Lines.

Release nuts (3) and feed brake master cylinder out of brake booster.

Installation Note:
Replace self-locking nuts.

Tightening torque 34 31 1AZ 34 31 Brake Master Cylinder.





Installation Note:
Replace sealing ring.





Important!
Brake booster (1) must be loosely screwed into place so as not to jam brake master cylinder (2) during installation.

Installation:
When inserting the brake master cylinder (2) into the brake booster (1), make sure the pressure rod of the brake booster and that of the brake master cylinder meet each other on one level.