34 11 220 Removing and installing/replacing both front brake disks

WARNING: This page is about a different car, the 2005 BMW 645Ci and 2004 BMW 645Ci. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

Remove wheels, refer to 36 10 300 REMOVING OR INSTALLING FRONT OR REAR WHEEL .
If necessary, remove and clean brake linings, refer to 34 11 000 REMOVING AND INSTALLING/REPLACING BRAKE LININGS ON BOTH FRONT DISK BRAKES .

Observe safety instructions on raising the vehicle, refer to 00 .. ... LIFTING VEHICLE WITH A LIFTING PLATFORM .

IMPORTANT: If the thickness of the brake disks drops below the minimum brake disk thickness (MIN TH), then the brake disks must be replaced. Brake disks may only be replaced in pairs (on each axle). If the brake disks are replaced, you must also fit new brake linings.

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

Fig 1: Releasing Screw And Removing Brake Caliper

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Tightening torque, refer to 34 11 2AZ in BRAKES - TIGHTENING TORQUES - 645CI .

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!

Unscrew bolts and take off brake disk.

Fig 2: Releasing Bolts And Removing Brake Disk

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Tightening torque, refer to 34 11 1AZ in BRAKES - TIGHTENING TORQUES - 645CI .

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

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

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

Fig 3: Locating Balance Clips

Courtesy of BMW OF NORTH AMERICA, INC.