34 21 200 Removing and installing/replacing brake pads on both rear disc brakes (CFRP brake)

Special tools required: 

• 34 1 050
• 34 1 280

It is imperative that you follow the GENERAL INFORMATION ON HANDLING THE CARBON CERAMIC BRAKE (CSIC) .

Before installing the new brake pads, CHECK THE CARBON CERAMIC BRAKE DISCS FOR WEAR . Note the tolerance sample catalogue. Refer to REFERENCE SAMPLE CATALOG FOR ASSESSING VISUAL QUALITY OF CARBON CERAMIC BRAKE DISCS IN USED CONDITION  and REFERENCE SAMPLE CATALOG FOR ASSESSING VISUAL QUALITY OF CARBON CERAMIC BRAKE DISCS IN NEW CONDITION .

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. Instead, clean with brake cleaner BMW part number 83 19 2 154 780. 

Necessary preliminary work: 

• Only remove WHEELS using a suitable wheel lift type jack / wheel fitting lever!

  Failure to comply with this stipulation may give rise to damage to the brake disc or brake caliper!

• Remove BRAKE PAD WEAR SENSOR .

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

Remove retaining spring (2).

Installation note: 

When inserting the retaining pin, the brake pad must be pressed against the spring force of the retaining spring! 

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Attention! 

Never undo screws (1) on brake caliper. 

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Remove brake pads (1) from the brake caliper.

Attention! 

When installing the brake pads:

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.

Installation note: 

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Clean brake pads, brake caliper and guide pins.

Do not grease backs of brake pads sleeve.

Press brake piston fully back with special tool 34 1 050.

Attention! 

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

Overflowing brake fluid will damage the paintwork.

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Check dust boot (1) for damage and replace if necessary.

Attention! 

Do not grease contact surfaces (2) with brake shoe paste. 

Do not spray carbon ceramic brake discs with brake cleaner. 

To clean the brake caliper with brake cleaner, cover the brake discs and remove brake caliper if necessary. 

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Clean brake caliper channels (2) with brake cleaner.