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

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Necessary preliminary tasks: 

IMPORTANT: The brake discs must be replaced if their thickness is below the minimum thickness (MIN TH).

Brake discs may only be replaced in pairs (for each axle).

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

The brake discs of M models are tied to the direction of travel:

The uneven part number denotes the left brake disc, the even part number the right brake disc!

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 .

Unfasten screws (1), remove brake caliper and fasten up.

NOTE: Brake hose remains connected.

Installation: 

Tightening torque: 34 11 2AZ, see 34 11 FRONT BRAKE .

Fig 1: Brake Caliper And Screw
G04749382Courtesy of BMW OF NORTH AMERICA, INC.

Unscrew bolts and take off 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 2: Releasing Brake Disc
G04749383Courtesy of BMW OF NORTH AMERICA, INC.

Installation: 

Replace brake disc retaining screw.

Thoroughly clean contact surface of wheel hub and remove traces of corrosion if necessary.

Unevenness on contact surface may result in distortion of brake disc!

Tightening torque: 34 11 1AZ, see 34 11 FRONT BRAKE .

IMPORTANT: Internally ventilated brake discs are balanced.

Never remove or reposition balance clips.

Fig 3: Locating Brake Discs Contact Surface
G04749384Courtesy of BMW OF NORTH AMERICA, INC.