34 33 505 Removing and Installing/Replacing Brake Booster

34 33 505 Removing and installing or replacing brake booster





Necessary preliminary tasks:
^ Read and comply with General Information.
^ Remove rear left dome cross-brace
^ Remove left footwell trim
^ On vehicles with coolant expansion tank in side panel, front left: Remove coolant filler neck

After completing tasks, bleed brake system with DSC.





Extract brake fluid out of expansion tank.

Unfasten brake lines (1).

Installation note:
Tightening torque 34 32 1AZ.

Disconnect vacuum line (2).

Installation note:
Check seal (3), replace if necessary.





Detach retaining clip (1) on brake pedal.

Pull out locking pin.

Unscrew nuts (2).

Installation note:
Replace self-locking nuts.

Tightening torque 35 11 1AZ.





Important!
Do not use any force when removing and installing the brake unit; the brake unit can be damaged under certain circumstances.
Brake lines must not be bent.

Carefully pull brake booster (1) out of bulkhead and tilt out.

Installation note:
Make sure seal (2) is present and correctly seated.

Replacement:
Modify tandem brake master cylinder.





F04 only:
When the repair work is complete, the following service function must be performed:
^ Brake pedal travel sensor adjustment.