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Home >> Mini >> 2021 >> Cooper Countryman Base >> Repair and Diagnosis (Single Page) >> Brakes >> Traction Control >> Brakes -- Repair Cooper Countryman (F60) >> 34 31 Foot Brake/Tandem Brake Master Cylinder >> 34 31 500 Removing and installing/replacing tandem brake master cylinder (Countryman 2017-2023, except PHEV)

34 31 500 Removing and installing/replacing tandem brake master cylinder (Countryman 2017-2023, except PHEV)

Special tools required  :

Preliminary work needed  :

IMPORTANT: Before beginning repair work, fully press the brake pedal several times to reduce the vacuum pressure in the brake booster.
IMPORTANT: Do not bend brake lines.
Close off brake lines and tandem brake master cylinder with seal plugs 32 1 270  .

Unfasten brake lines (1).

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

G11648471Courtesy of BMW

Installation  :

Replace sealing ring (1).

Check rubber plugs (2) and replace if necessary.

G11648472Courtesy of BMW

When inserting the tandem brake master cylinder (1) into the brake booster, make sure the anti-roll bar link of the brake booster and the tandem brake master cylinder meet each other on one level.

G11648473Courtesy of BMW

Insert nuts (2) and tighten.

Replace self-locking nuts.

Tightening torque 34 31 1AZ .

Insert brake lines (1) and tighten down.

Tightening torque 34 32 1AZ .

G11648471Courtesy of BMW

Required follow-up work  :