34 31 500 Removing and Installing/Replacing Brake Master Cylinder

34 31 500 Removing and Installing/Replacing Brake Master Cylinder

Caution:
Note "General Data" Service Precautions
After completing work, bleed brake system. Brake Bleeding
Remove expansion tank 34 31 181 Removing and Installing/Replacing Expansion Tank For Hydraulic Brake Actuation





Unfasten brake lines (1/2).
1. Circuit, front axle "V"
2. Circuit, rear axle "H"

Release hexagon nuts (3) and remove master brake cylinder from brake booster.

Installation:
Replace self-locking nuts.
26 Nm





Installation:
Do not tension flexible lines (1/2) between master brake cylinder and hydraulic unit as this causes noises.





Installation:
Replace O-ring (1).





Installation:
When inserting master brake cylinder into brake booster, make sure pressure rod of brake booster and pressure rod of master brake cylinder are in one plane.