34 11 000 Removing and installing/replacing brake pads on both front disc brakes

Special tools required:

34 1 050
34 1 280
2 352 960

CAUTION:

Do not mechanically clean the guide surfaces for brake pads to prevent damage to the surface coating. Clean the guide surfaces using brake cleaner, BMW part number 83 19 2 154 780. Carefully clean highly contaminated guide surfaces with a suitable tool (e.g. brass wire brush, nylon brush). 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.).
Spread brake pad paste onto the marked surfaces using a brush!

Observe REGULATION ON APPLYING BRAKE PAD PASTE TO BRAKE PADS AND BRAKE ANCHOR PLATES !
Retaining pin and expanding spring: for vehicles older than 48 months it is recommended to replace the retaining spring!
Brake pad wear sensor: After removal it must be replaced (brake pad wear sensor loses its retention capability in the break pad).
A CBS reset must be done after every brake pad exchange.
- With a sanded brake pad wear sensor (display in CBS menu): CBS reset possible in vehicle.
- With a non -sanded brake pad wear sensor: CBS reset only possible via diagnosis system.

Necessary preliminary work:

Remove the FRONT WHEELS .
Remove the BRAKE PAD WEAR SENSOR .

Removal:

Release guide screw (1).

If necessary, grip at hexagon head (2).

Tilt brake caliper (3) upwards.

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Remove brake pads (1) in direction of arrow from caliper carrier.

CAUTION: 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.

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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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Installation:

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

Press back brake pads and piston with special tool 2 352 960.

CAUTION: When forcing piston back:

Pay attention to brake fluid level in expansion tank; brake fluid that spills over will damage paintwork.

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Check dust boot for damage and replace if necessary.

Clean contact surface (1) of brake piston with brake cleaner and apply a thin coating of brake pad paste.

CAUTION: Dust boot must not come into contact with brake pad paste as this may cause the dust boot to swell.

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Clean contact surface (1) of brake caliper with brake cleaner and apply a thin coating of brake pad paste.

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Do not mechanically clean the guide surfaces (1) for brake pads to prevent damage to the surface coating. Clean the guide surfaces using brake cleaner, BMW part number 83 19 2 154 780.

Carefully clean highly contaminated guide surfaces (1) with a suitable tool (e.g. brass wire brush, nylon brush).

Then thinly coat the guide surfaces (1) with brake pad paste, BMW part number 83 19 2 158 851 (3 gr.) or 83 19 2 158 852 (100 gr.).

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Apply a thin coating of brake pad paste to both sides of T-head of brake pad in area (1).

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CAUTION: Brake pad with bulge (1) is intended for accommodating the brake pad wear sensor and must be fitted on the piston side.

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

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Tilt brake caliper (3) down.

Insert guide bolt (1) and tighten.

If necessary, grip at hexagon head (2).

Installation note:

Replace guide screw.

Tightening torque, refer to: 34 11 3AZ .

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Required follow-up work:

Install the BRAKE PAD WEAR SENSOR .
Mounting the FRONT WHEELS .

NOTE: After completing repair work:

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 .