BMW 7 Owners & Service Manuals

BMW 7 Series: Brake Booster

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.

Brakes - Repair
Fig. 103: Identifying Brake Lines, Vacuum Line And Seal

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.

Brakes - Repair
Fig. 104: Identifying Retaining Clip And Nuts

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.

Brakes - Repair
Fig. 105: Identifying Brake Booster And Seal

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.

    READ NEXT:

     Replacing Vacuum Hose For Brake Booster

    IMPORTANT: Before beginning work, fully press the brake pedal several times to reduce the vacuum pressure in the brake booster. This makes it easier to remove the vacuum hose. Vacuum hose and non-re

     Electrical Components Wear Indicator

    REPLACING A BRAKE PAD SENSOR (FRONT) IMPORTANT: The brake pad wear sensor must be replaced once it has been removed (brake pad wear sensor loses its retention capability in the brake pad). If an alr

     Parking Brake

    ADJUSTING PARKING BRAKE The parking brake test must be carried out on the dynamic brake analyzer as follows. Release position: Wheel circumferential force right/left < or = 300 N. Press parkin

    SEE MORE:

     Front Axle Suspension

    REMOVE AND INSTALL/REPLACE STIFFENING PLATE (ALL-WHEEL DRIVE) IMPORTANT: Observe safety instructions for raising the vehicle Driving without stiffening plate is not permissible! Necessary preliminary work Remove UNDERBODY PROTECTION in front and rear Release screws (1). Remove stiffening plate (

     Replacing Steering Shaft Sleeve

    Necessary preliminary tasks: Remove stiffening plate (all N73/S63 and F12 N63) Remove EXHAUST SYSTEM (only N63/N73/S63) Remove CATALYTIC CONVERTERS CYLINDERS 5-8 (only N63/N73/S63) Remove heat shield on bulkhead (only N63/N73/S63) Release UNIVERSAL JOINT WITH CORRUGATED TUBING on "bottom secti

    © 2019-2025 Copyright www.bmw7g11.com