Necessary preliminary tasks

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2012 BMW 328xi, 2012 BMW 328i, 2011 BMW 328xi, 2011 BMW 328i, and 2010 BMW 328xi. However, it is still accessible from the selected car via links, so may be relevant.

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.

Fig 1: Identifying Brake Pedal Support

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If necessary, pull brake hose out of holder (1).

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 .

Fig 2: Disconnecting Brake Hose From Brake Line

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Detach brake hose from brake caliper (4).

Installation:

Tightening torque 34 32 2AZ .

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 .

Fig 3: Locating Brake Caliper Bolts

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Pull brake pads (1) off guide pins (2) and remove.

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 .

Fig 4: Pulling Brake Pads And Guide Pins

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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.

Fig 5: Identifying Contact Faces Of Brake Pistons

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