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

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2016 BMW 328i xDrive, 2016 BMW 328d xDrive, 2015 BMW 328i xDrive, 2015 BMW 328d xDrive, and 2014 BMW 328i xDrive. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

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

IMPORTANT:

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!

To prevent any damage to the surface coating, where 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 no.: 83 19 2 154 780 and light coating of 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:

Remove WHEELS .
Remove BRAKE PAD WEAR SENSOR

Drive out retaining pins (1).

Remove expanding spring (2).

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

IMPORTANT: Mark any worn brake pads.
In the event of one-sided brake pad wear, do not change brake pads round.

Fig 1: Identifying Brake Pads, Expanding Spring And Retaining Pins

Courtesy of BMW OF NORTH AMERICA, INC.

Clean brake pads.

Do not grease backs of brake pads sleeve.

IMPORTANT: When pressing down piston, note brake fluid level in expansion tank.
Overflowing brake fluid will damage the paintwork.

Fig 2: Turning Piston With Special Tool (2 352 960)

Courtesy of BMW OF NORTH AMERICA, INC.

Turn piston back fully with special tool 2 352 960 .

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 .

Fig 3: Checking Minimum Brake Disc Thickness
Courtesy of BMW OF NORTH AMERICA, INC.

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

Check dust boot for damage and renew if necessary.

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.

Fig 4: Identifying Brake Pads Guide Surfaces

Courtesy of BMW OF NORTH AMERICA, INC.

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

Fig 5: Identifying Brake Pad Paste Applying Area

Courtesy of BMW OF NORTH AMERICA, INC.

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

Fig 6: Identifying Brake Pad Contact Surface Paste Applying Area

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: After completing 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 .
When replacing pads, reset CBS display in accordance with factory specification.