IMPORTANT:
The brake pad wear sensor must be replaced once it has been removed (brake pad wear sensor loses its retention capability in the brake pad).
Necessary preliminary tasks:
- Remove Wheels
.
- Remove front brake pad sensor.
NOTE:
Read and comply with General Information.
After completing work: Bleed braking system.
Press clutch pedal down to floor and secure with pedal support.
NOTE:
The pedal support may only be released when the brake lines are reconnected. This prevents brake fluid from emerging from the expansion tank and air from entering the system when the brake lines are opened.
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If necessary, pull brake hose out of holder (1).
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IMPORTANT:
Grip brake hose at square head (3) to prevent connecting piece from turning in retaining bracket.
Disconnect brake hose from brake line (2). Installation: Tightening torque 34 32 1AZ, see 34 32 BRAKE LINES
.
Detach brake hose from brake caliper (4). Installation: Tightening torque 34 32 2AZ, see 34 32 BRAKE LINES
.
IMPORTANT:
Never twist brake hose when installing it and avoid all contact with parts attached rigidly to the body.
NOTE:
First tighten brake hose on brake caliper. Move wheels into straight-ahead position. Insert brake hose in bracket and screw onto brake pipe.
Release bolts (1) and pull off brake caliper with brake anchor plate towards rear. Installation: Tightening torque 34 11 2AZ, see 34 11 FRONT BRAKE
.
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Pull brake pads (1) off guide pins (2) and remove.
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IMPORTANT:
Mark any worn brake pads. In the event of one-sided brake pad wear, do not change brake pads round. Observe minimum thickness of brake pads. See 34 11 FRONT BRAKE E90
.
Installation: Clean brake pads, brake caliper and guide pins. Do not grease backs of brake pads sleeve. Brake pads must be correctly seated on guide pins.
IMPORTANT:
Do not grease brake pads and guides with anti-squeak paste.
Clean contact surface (1) of brake pistons.
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