34 11 220 Removing And Installing/Replacing Both Front Brake Discs

WARNING: This page is about a different car, the 2008 BMW Alpina and 2007 BMW Alpina. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

34 1 280

Necessary preliminary tasks:

Remove wheels
If necessary, remove and clean brake linings

After completing work, read and comply with notes on braking in new brake discs / brake pads . See 34 00 ... GENERAL INFORMATION ON BRAKING IN NEW BRAKE DISCS / BRAKE PADS .

Observe safety instructions on raising the vehicle. See 00 ... ... LIFTING VEHICLE WITH A LIFTING PLATFORM .

Check minimum brake disc thickness:

Position special tool 34 1 280 at three measuring points in area (1) and measure.
Compare measurement result and lowest value with setpoint value . See BRAKES - TECHNICAL DATA .

New brake linings may only be installed if the brake disc thickness is greater than or equal to the minimum brake disc thickness (MIN TH) . See BRAKES - TECHNICAL DATA .

Always replace brake discs in pairs.

If the brake discs are replaced, you must also fit new brake linings.

Fig 1: Checking Minimum Brake Disc Thickness Using Special Tool (34 1 280)

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1), remove brake caliper and tie up.

Installation:

Tightening torque. See BRAKES - TIGHTENING TORQUES -- ALPINA .

NOTE: Brake hose remains connected.
If the brake hose was pulled from the mounting fixture during removal, make sure it is positively attached when installed!

Fig 2: Identifying Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Unscrew bolts and take off brake disc.

Installation:

Tightening torque. See BRAKES - TIGHTENING TORQUES -- ALPINA .

Clean contact surface of brake disc at wheel hub thoroughly and remove traces of corrosion if necessary. Unevenness on contact surface may result in distortion of brake disc!

IMPORTANT: To release brake disc: Do not under any circumstances strike friction ring with a hammer or similar! If necessary, carefully tap on base of brake disc chamber with a rubber mallet.

Fig 3: Removing Bolts And Take Off Brake Disc

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Internally ventilated brake discs are balanced.
Never remove or reposition balance clips.

Fig 4: Locating Balance Clips

Courtesy of BMW OF NORTH AMERICA, INC.