Removing and installing/replacing both front brake discs (X6 M)
Special tools required:
- 34 1 280
- 83 30 2 459 458
Attention!
Brake discs must only be replaced in pairs (per axle).
Fit new brake discs only together with new brake pads.
Attention!
If required, washers for increasing the coefficient of friction (1) can be installed in some vehicles between wheel hub/brake disc and between brake disc/wheel rim (also see applicable BMW parts catalogue)!
These washers must be reinstalled or replaced in case of damage!
Center disc for increasing the coefficient of friction (1) using special tool 83 30 2 459 458 (3 centering pins) on wheel hub and install!
Necessary preliminary work:
Removal:
Attention!
When removing the brake disc: Do not under any circumstances strike friction ring with a hammer or similar! If necessary, carefully tap with a rubber mallet against the brake disc chamber.
Release screws (1) and remove brake disc (2).
Installation:
Check minimum brake disc thickness:
- Position special tool 34 1 280 at three measuring points in area (1) and measure.
- Compare measuring result and also compare the lowest value.
Attention!
New brake pads may only be installed if the brake disk thickness is greater than the MINIMUM BRAKE DISC THICKNESS .
Clean contact surface of wheel hub thoroughly and remove any traces of rust if necessary.
Irregularities in the contact surface can cause distortion in the brake disc!
Install brake disc (2).
Insert screws (1) and tighten.
Tightening torque 34 11 1AZ .
Replace screws (1).
Parts: Bolts
Required follow-up work:
- After completing the repair observe the notes on BEDDING IN NEW BRAKE DISCS/BRAKE PADS .
- Install front BRAKE PADS .