34 11 000 Removing and Installing/Replacing Brake Linings On Both Front Disc Brakes (1 Piston)

Special tools required: 

• 34 1 050
• 34 1 080
• 34 1 280

Necessary preliminary tasks: 

• Remove wheels
• Remove brake pad wear sensor

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

Installation: 

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

Fig 1: Removing Retaining Spring

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Remove plastic plugs (1).

If necessary, when replacing linings, reset CBS display in accordance with factory specification.

Release guide screws (2) with special tool 34 1 080. See 34 1 080 BIT INSERT . Withdraw brake caliper backwards.

Fig 2: Identifying Plastic Plugs

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Left:

Pull brake lining wear sensor (1) towards rear out of lining.

If necessary, replace brake lining wear sensor.

Installation: 

Only clean guide screws; do not grease.

Check threads.

Replace all guide screws which are not in perfect condition.

Tightening torque 34 11 4AZ. See 34 11 FRONT BRAKE

Fig 3: Pulling Brake Lining Wear Sensor

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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 lining wear, do not change brake linings round.

Observe minimum thickness of brake pads. See 34 11 FRONT BRAKE E70

Clean brake linings.

Do not apply grease to brake pad backplate.

Fig 4: Removing Outer Brake Pad

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Check minimum brake disc thickness:

• Position special tool 34 1 280 at three measuring points in area (1) and measure. See 34 1 280 SLIDING CALIPER
• Compare measurement result and lowest value with setpoint value. See 34 11 FRONT BRAKE E70

New brake linings may only be installed if the brake disc thickness is greater than or equal to the minimum brake disc thickness (MIN TH). See34 11 FRONT BRAKE E70 .

Fig 6: Identifying Special Tool (34 1 280)

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

Clean contact face (1) of brake piston and apply a thin coating of anti-squeak compound  .

Fig 7: Identifying Dust Sleeve

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Clean mounting faces (1) and (2) of brake lining hammer heads/brake caliper housing and coat with Plastilube.

Fig 8: Identifying Mounting Faces And Brake Lining Hammer Heads

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Clean mounting face (1) of brake caliper and apply a thin coating of Plastilube.

Fig 9: Identifying Mounting Face Of Brake Caliper

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Clean hammerhead guides (1) and apply a thin coating of Plastilube.

Fig 10: Identifying Hammerhead Guides

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