34 21 200 Removing and installing/replacing brake pads on both rear disc brakes (Brembo) (2' Series coupe and convertible, 2017-2021)

Special tools required: 

• 34 1 000 
• 34 1 050
• 34 1 280 
• 2 352 960 

Attention! 

• 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, but rather clean with brake cleaner BMW part number: 83 19 2 154 780 and 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 !

Necessary preliminary tasks: 

• Refer to REMOVING WHEELS .
• Refer to REMOVING BRAKE PAD WEAR SENSOR .

Drive out retaining pins (1).

Remove expanding spring (2).

Pull out brake pads (3) with special tool 34 1 000  .

Attention! 

Mark any worn brake pads.

In the event of one-sided brake pad wear, do not change brake pads round.

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Clean brake pads.

Do not grease backs of brake pads sleeve.

Attention! 

When pressing down piston, note brake fluid level in expansion tank.

Overflowing brake fluid will damage the paintwork.

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Turn piston back fully with special tool 2 352 960  .

Check minimum brake disc thickness:

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• Position special tool 34 1 280  at three measuring points in area (1) and measure.
• Compare measuring result and lowest value with setpoint value.

Attention! 

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

Attention! 

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).

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These procedures applies for all the following described brake systems.

Check dust boot for damage and replace if necessary.

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

So as not to damage the surface coating, if possible do not mechanically clean  the guide surfaces (2) for the brake pads on the brake caliper mounting bracket. Clean guide surface (2) with brake cleaner and apply a thin coating of brake pad paste.

Clean both inner and outer guide surfaces (2) and apply a thin coating of brake pad paste.

Lightly coat both sides of the contact surface in area (1 and 2) with brake pad paste.

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Lightly coat the brake pad contact surface on both sides in area (1) with brake pad paste.

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