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

Special tools required:

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 TI. number 83 19 2 154 780 and apply a thin coating of break pad paste BMW TI. 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

Lift out retaining spring (1).

Fig 1: Lifting Out Retaining Spring

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Remove plastic plugs (1).

Fig 2: Identifying Plastic Plugs

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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.

Fig 3: Lifting Out Brake Caliper

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Attention!

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

Remove outer brake pad.

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

Attention!

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

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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!
Installing brake pad sets of equipment specification (A) with retaining spring continues to be permitted.

Fig 5: Identifying Brake Pads With/Without Retaining Spring

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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 .

Fig 6: Checking Minimum Brake Disc Thickness

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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).

Fig 7: Locating Bevel Edges

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These procedures applies for all the following described brake systems.

Attention!

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 8: Turning Piston Using Special Tool (34 1 050)

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

Fig 9: Identifying Dust Boot And Brake Piston Contact Surface

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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.

Attention!

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

Fig 10: Identifying Brake Piston Contact Surface

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

Fig 11: Identifying Contact Surfaces Of T-Heads/Brake Caliper Housing

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

Fig 12: Identifying Contact Surface Of Brake Caliper

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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 13: Identifying Guide Surfaces For Brake Pads On Brake Caliper Mounting Bracket

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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 14: Identifying Guide Surfaces For Brake Pads On Brake Caliper Mounting Bracket

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

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

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

Fig 16: Coating T-Head Of Outer Brake Pad With Brake Pad Paste

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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 exchanging brake pads, reset CBS display in accordance with factory specification.