34 11 000 Removing and installing or replacing brake pads on both front disc brakes (Teves floating caliper)

Special tools required:

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!

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 no. 83 19 2 154 780 and apply a thin coating of brake pad paste BMW part no. 83 19 2 158 851 (3 g) or 83 19 2 158 852 (100 g).
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

Lift out retaining spring (1).

Fig 1: Identifying Retaining Spring

Courtesy of BMW OF NORTH AMERICA, INC.

Remove plastic plugs (1).

Fig 2: Identifying Plastic Plugs

Courtesy of BMW OF NORTH AMERICA, INC.

Unfasten guide bolts (1) and lift out brake caliper towards rear of vehicle.

Installation note:

Tightening torque 34 11 4AZ .

Clean guide screws only; do not grease.

Check threads.

Replace all guide screws which are not in perfect condition.

IMPORTANT: Tie brake caliper back and do not allow to hang from brake hose.

Fig 3: Identifying Guide Bolts

Courtesy of BMW OF NORTH AMERICA, INC.

Remove outer brake pad.

Inner brake pad is located with its spring in the piston.

IMPORTANT: 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 .

Clean brake pads.

Do not grease backs of brake pads sleeve.

Fig 4: Removing Outer Brake Pad

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: The outer brake pads gradually need to be changed as well.

The previous version (A) with retaining spring (1) is replaced by brake pads of version (B) without retaining spring!

The use of pad sets of version (A) with retaining spring continues to be permissible!

Fig 5: Identifying Outer Brake Pad Retaining Spring

Courtesy of BMW OF NORTH AMERICA, INC.

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

IMPORTANT: New brake pads may only be fitted if the brake disc thickness is greater than the MINIMUM BRAKE DISC THICKNESS (MIN TH).

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

Turn piston back fully with special tool 34 1 050 .

Fig 7: Turning Piston Back Fully With Special Tool 34 1 050

Courtesy of BMW OF NORTH AMERICA, INC.

Clean contact surface (2) of brake piston and apply a thin coating of brake pad paste.

Fig 8: Identifying Contact Surface Of Brake Piston

Courtesy of BMW OF NORTH AMERICA, INC.

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.

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

Fig 9: Identifying Brake Cleaner Contact Surface Area

Courtesy of BMW OF NORTH AMERICA, INC.

Clean contact surfaces (1) of T-heads/brake caliper housing with brake cleaner and apply a thin coating of brake pad paste.

Fig 10: Cleaning Contact Surfaces Of T-Heads/Brake Caliper Housing With Brake Cleaner

Courtesy of BMW OF NORTH AMERICA, INC.

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

Fig 11: Identifying Contact Surface Of Brake Caliper

Courtesy of BMW OF NORTH AMERICA, INC.

So as not to damage the surface coating, if possible do not mechanically clean the guide surfaces (1) for the brake pads on the brake caliper mounting bracket. Clean guide surfaces (1) with brake cleaner and apply a thin coating of brake pad paste.

Fig 12: Identifying Brake Pad Guide Surfaces On Brake Caliper Mounting Bracket

Courtesy of BMW OF NORTH AMERICA, INC.

So as not to damage the surface coating, if possible do not mechanically clean the guide surfaces (1 and 2) for the brake pads on the brake caliper mounting bracket. Clean guide surfaces (1 and 2) with brake cleaner and apply a thin coating of brake pad paste.

Fig 13: Identifying Guide Surfaces For Brake Pads On Brake Caliper

Courtesy of BMW OF NORTH AMERICA, INC.

Lightly coat the T-head of the inner brake pad with brake pad paste in area (1 and 2).

Fig 14: Coating T-Head Of Inner Brake Pad With Brake Pad Paste

Courtesy of BMW OF NORTH AMERICA, INC.

Lightly coat the T-head of the outer brake pad with brake pad paste in area (1 and 2).

Fig 15: Coating T-Head Of Outer Brake Pad With Brake Pad Paste

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: After completing work:

When installing new brake pads at front and rear axles, brake fluid level must be brought up to "MAX" mark.
Fully depress brake pedal several times so that brake pads contact brake discs.
Read and comply with notes on BREAKING IN NEW BRAKE DISCS/BRAKE PADS .
When replacing pads, reset CBS display in accordance with factory specification.