34 21 320 Removing and installing/replacing both brake discs (2' Series coupe and convertible, 2017-2021)
Special tools required:
- 34 1 280
Necessary preliminary work:
- Remove and clean brake pads. Refer to REMOVING AND INSTALLING/REPLACING BRAKE PADS ON BOTH REAR DISC BRAKES (BREMBO) .
Check minimum brake disc thickness:
- Position special tool 34 1 280 at three measuring points in area (1) and measure.
- Compare measuring result and lowest value with setpoint value.
If the brake discs are replaced, you must also fit new brake pads.
Always replace brake discs in pairs.
Attention!
New brake pads may only be installed if the brake disk thickness is greater than the minimum brake disc thickness.
Release bolts (1) and detach caliper carrier.
Installation note:
Replace screws.
Tightening torque 34 21 2AZ .
Attention!
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.
Clean contact surface of brake disc at wheel hub thoroughly and remove traces of corrosion.
Unevenness on contact surface may result in distortion of brake disc!
Release screw (1) and remove brake disc (2).
Installation note:
Replace screw.
Tightening torque 34 21 1AZ .
After installation:
- Adjusting PARKING BRAKE .
- Read and comply with NOTES ON BRAKING IN NEW BRAKE DISCS/BRAKE PADS .