34 31 505 Removing And Installing / Replacing Master Brake Cylinder For DSC

WARNING: This page is about a different car, the 2008 BMW Alpina and 2007 BMW Alpina. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

32 1 270

Necessary preliminary tasks:

Read and comply with General Information . See 34 00 ... GENERAL INFORMATION .
Remove expansion tank.

Observe safety instructions on raising the vehicle. See 00 ... ... LIFTING VEHICLE WITH A LIFTING PLATFORM .

After completing tasks, bleed brake system . See 34 00 050 BLEEDING BRAKE SYSTEM WITH DSC .

Unfasten brake lines.

Installation:

Tightening torque. See BRAKES - TIGHTENING TORQUES -- ALPINA .

Seal off brake lines and brake master cylinder with special tool 32 1 270 (plug).

Fig 1: Locating Brake Lines

Courtesy of BMW OF NORTH AMERICA, INC.

Release nuts and withdraw brake master cylinder from brake booster.

Installation:

Replace self-locking nuts.

Tightening torque. See BRAKES - TIGHTENING TORQUES -- ALPINA .

Fig 2: Locating Nuts

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Replace O-ring.

Fig 3: Locating O-Ring

Courtesy of BMW OF NORTH AMERICA, INC.

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.

Fig 4: Identifying Brake Master Cylinder And Brake Booster

Courtesy of BMW OF NORTH AMERICA, INC.