34 21 320 Removing and installing/replacing both brake disks

Necessary preliminary tasks:

After completing tasks, adjust handbrake, see 34 10 014 Adjusting handbrake .

IMPORTANT: The brake disks must be replaced if their thickness is below the minimum thickness, see 34 21 REAR BRAKE DISCS E83 .

Always replace brake disks in pairs.

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

Release bolts (1), pull off brake caliper towards rear and tie up.

IMPORTANT: Replace micro-encapsulated bolts.

If necessary, remove adhesive residue in nut thread with M10x1.5 tap. Then blow tapped hole out with compressed air.

Tightening torque: 34 21 3AZ, see 34 21 REAR BRAKE .

NOTE: Brake hose remains connected.

Fig 1: Brake Caliper And Bolts

Courtesy of BMW OF NORTH AMERICA, INC.

Unscrew bolts and take off brake disk.

Installation:

Replace brake disk retaining screw.

Tightening torque: 34 21 1AZ, see 34 21 REAR BRAKE .

Fig 2: Locating Brake Disk Retaining Screw

Courtesy of BMW OF NORTH AMERICA, INC.