Removing and installing/replacing brake pads on both front disc brakes (Brembo) (X6 M)

Special tools required:

34 1 050
34 1 280
2 352 960

CAUTION:

Brake pad wear sensor: After removal it must be replaced (brake pad wear sensor loses its retention capability in the break pad).
Retaining pins and expanding spring: for vehicles older than 48 months it is recommended to replace the retaining spring!

So as not to damage the surface coating, if possible do not mechanically clean the guide surfaces for the brake pads on the brake caliper mounting bracket. Instead, clean surfaces with brake cleaner BMW part number 83 19 2 154 780. Then thinly coat with brake pad paste BMW part number 83 19 2 158 851 (3 gr.) or 83 19 2 158 852 (100 gr.).

Necessary preliminary work:

REMOVING FRONT WHEELS .
Remove BRAKE PAD WEAR SENSOR .

Removal:

Drive out retaining pins (1) in direction of arrow.

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Push brake piston back over the brake pad (1) with special tool 2 352 960.

CAUTION: When pressing piston back, note brake fluid level in expansion tank.Overflowing brake fluid will damage the paint. The brake pistons must be pressed back to the limit position!

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CAUTION: Screws (1) must not be opened under any circumstances!

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Release the screws (1) and remove the brake caliper (2) in direction of arrow.

CAUTION: Do not allow the brake caliper (2) to hang from the brake hose; attach the brake caliper upwards!

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Remove the brake pads (1) in direction of arrow.

CAUTION: Mark any worn brake pads. In the event of one-sided brake pad wear, do not swap the brake pads! The brake pads may have been bonded to the brake pistons. Bonded brake pads must not be reinstalled!

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Preparation for 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 lowest value with SETPOINT VALUE .

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CAUTION: New brake pads may only be installed if the brake disk thickness is greater than the minimum BRAKE DISC THICKNESS .

CAUTION: If new brake pads are mounted on a brake disc, the following must be observed:

Bevel edges in the area (1) slightly (dimension A must not exceed maximum 1 mm).

These procedures applies for all the following described brake systems.

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CAUTION: Do not grease brake pads and brake pistons with brake pad paste.

Clean contact surface (1) of the inner and outer brake pistons (6 units) with brake cleaner.

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Clean contact surface (1) of brake pistons with brake cleaner.

Coat contact surface (1) thinly with brake pad paste.

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Installation:

If necessary, pull off the protective film of the adhesive layer (1) from the brake pads.

CAUTION: Do not touch the adhesive layer!

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Install brake pad (1) in direction of arrow into the brake caliper.

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Install the brake caliper (1) in direction of arrow.

Parts: Replace screws (2).

Insert screws (2) and tighten.

Tightening torque: 34 11 5AZ .

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Drive in the retaining pins (1) in direction of arrow.

CAUTION: Only for brake pads with adhesive film! When inserting the retaining pin, the brake pad must be pressed against the spring force of the retaining spring! The brake pads must be bonded with the brake caliper immediately following the installation: Step on the brake pedal to the floor and hold the pressure for one minute. This causes the brake pads to adhere to the brake pistons.

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Required follow-up work:

Installing the BRAKE PAD WEAR SENSOR .
Mounting the front WHEELS .

NOTE: After completing repair:

Fully depress brake pedal several times so that brake pads contact brake discs.
When installing new brake pads at front and rear axles, the brake fluid level must be brought up to the "maximum" mark.
Read and comply with notes on BREAKING IN NEW BRAKE DISCS/BRAKE PADS .
If necessary, when replacing brake pads, RESET CBS display as per factory specification.