34 11 220 Removing and installing/replacing both front brake discs (Brembo)
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Necessary preliminary tasks:
- Remove wheels.
- Remove and clean brake pads.
After completing work, read and comply with notes on BRAKING IN NEW BRAKE DISCS / BRAKE PADS .
Check minimum brake disc thickness:
- Position special tool 34 1 280 at three measuring points in area (1) and measure.
- Compare measurement result and lowest value with setpoint value. See BRAKES - TECHNICAL DATA - SEDAN/WAGON .
If the brake discs are replaced, you must also fit new brake pads. Brake discs may only be replaced in pairs (on each axle).
IMPORTANT:
New brake pads may only be fitted if the brake disc thickness is greater than the minimum brake disc thickness (MIN TH). See 34 11 FRONT BRAKE E90
.
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.
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: Replace screw. Tightening torque 34 11 1AZ. See FRONT BRAKES .