34 31 500 Removing and installing/replacing brake master cylinder

WARNING: This page is about a different variant/trim than selected.

Necessary preliminary tasks

Remove EXPANSION TANK .
Read and comply with GENERAL INFORMATION .

After completing tasks, bleed BRAKE SYSTEM WITH DSC .

IMPORTANT: Do not bend brake lines.
Close off brake lines and brake master cylinder with plugs 32 1 270 .

Unfasten brake lines (1).

Installation:

Tightening torque 34 32 1AZ .

Fig 1: Removing Brake Master Cylinder Out Of Brake Booster

Courtesy of BMW OF NORTH AMERICA, INC.

Release nuts (2) and feed brake master cylinder out of brake booster.

Installation:

Replace self-locking nuts.

Tightening torque 34 31 1AZ .

Installation:

Replace sealing ring (1).

Check rubber plugs (2) and replace if necessary.

Fig 2: Identifying Sealing Ring And Rubber Plugs

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

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

Fig 3: Identifying Brake Master Cylinder

Courtesy of BMW OF NORTH AMERICA, INC.