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.
.png)
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.
.png)
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.
.png)
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:
System Components
Components of the Central Locking System
Footwell Module
The footwell module is installed at the left-hand A-pillar. It evaluates the
status of the door contacts and reads in
the Hall sensor signals of the lock barrel in the driver's door and transfers
the information via the K-CAN2 to
the junctio
Seat Heating In The Rear Basic Seat
System Circuit Diagram, Rear Seat Heating
Fig. 108: Rear Seat Heating System Circuit Diagram
COMPONENTS DESCRIPTION CHART
Seat-heating buttons, driver's side, with function indicator, rear
Seat-heating buttons, front-passenger's side, with function indicator,
rear
Junction box electronics (
