34 11 000 Removing and installing/replacing brake pads on both front disc brakes (1 piston caliper) (X6 2015-2019)

Special tools required: 

• 34 1 050
• 34 1 080 
• 34 1 280 

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 Tl. number 8319 2154 780 and apply a thin coating of break pad paste BMW Tl. number 8319 2 158 851 (3 gr.) or 8319 2 158 852 (100 gr.). 

Spread brake pad paste onto the marked surfaces using a brush! 

Observe GUIDELINE FOR APPLYING BRAKE PAD PASTE ON BRAKE PADS AND CALIPER CARRIER !

Necessary preliminary tasks: 

• Remove FRONT WHEELS .
• Remove BRAKE PAD WEAR SENSOR .

Lever out retaining spring (1) in direction of arrow towards rear.

Installation note: 

Attach retaining spring (1) first at top and bottom on brake caliper and then allow to engage in recesses of brake caliper housing.

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Remove plastic plugs (1).

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Release guide screws (1) with special tool 34 1 080. Withdraw brake caliper backwards.

Attention! 

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

Installation note: 

Only clean guide bolts; do not grease.

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Check thread.

Replace all guide screws which are not in perfect condition.

Tightening torque 34 11 4AZ .

Attention! 

Mark any worn brake pads.

Remove outer brake pad (1) in direction of arrow.

Force inner brake pad (2) in direction of arrow off piston and remove.

The inner brake pad is seated with a spring in the piston or in the brake caliper housing.

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 apply grease to brake lining backplate.

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Installation note: 

When putting on the brake caliper, it is absolutely necessary to make sure that the T-head (1) of the outer brake pad is seated correctly on the contact surface (2).

Attention! 

With brake pads that are already partially worn, pay particular attention that the position of the outer brake pad in relation to the contact surface (2) is ensured!

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Attention! 

When forcing piston back:

• Pay attention to brake fluid level in expansion tank; brake fluid that spills over will damage paintwork.

Press back brake pads and piston with special tool 34 1 050.

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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 measurement result and lowest value with setpoint value.

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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).

These procedures applies for all the following described brake systems.

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Check dust boot (2) for damage and replace if necessary.

Attention! 

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

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

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Clean contact surfaces (1) and (2) with brake cleaner and apply a thin coating of brake pad paste.

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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.

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Clean guide surfaces (1) with BRAKE CLEANER and apply a thin coating of brake pad paste.

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

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If possible, do not mechanically clean the brake pad guides (1) to not damage the surface coating. Clean guide surfaces (1 and 2) with BRAKE CLEANER and apply a thin coating of brake pad paste.

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If possible, do not mechanically clean the brake pad guides (1) to not damage the surface coating.

Clean guide surfaces (1 and 2) with BRAKE CLEANER and apply a thin coating of brake pad paste.

Courtesy of BMW OF NORTH AMERICA, INC.