34 21 200 Removing and Installing/Replacing Brake Linings On Both Rear Disc Brakes (Teves Floating Caliper)

Special tools required: 

• 34 1 050. See 34 1 050 FIXTURE
• 34 1 280. See 34 1 280 SLIDING CALIPER

Necessary preliminary tasks: 

• Remove wheels. See 36 10 300 REMOVING OR INSTALLING FRONT OR REAR WHEEL
• Remove brake pad wear sensor. See 34 35 513 Replacing a Brake Pad Sensor (Rear) 

Fig 1: Identifying Cover Plug

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Lift out retaining spring (1).

Remove cover plug (1).

Fig 2: Lifting Out Retaining Spring

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Unscrew guide screws (2).

Withdraw brake caliper backwards.

Installation: 

Tightening torque 34 21 4AZ. See 34 21 REAR BRAKE .

Clean guide screws only; do not grease.

Check threads.

Replace all guide screws which are not in perfect condition.

Fig 3: Identifying Plastic Plugs And Guide Screws

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Turn piston fully back with special tool 34 1 050. See 34 1 050 FIXTURE

Fig 4: Identifying Special Tool (34 1 050)

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Remove outer brake pad.

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

Clean brake pads.

Do not grease backs of brake linings sleeve.

Fig 5: Removing Outer Brake Lining

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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 21 REAR BRAKE DISCS 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). See 34 21 REAR BRAKE DISCS E70

Fig 6: Identifying Special Tool (34 1 280)

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Check dust sleeve (1) for damage and replace if necessary.

Clean contact face (2) of brake piston and apply a thin coating of anti-squeak compound.

Fig 7: Identifying Dust Sleeve

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Clean contact surfaces (1...2) of brake lining hammer heads/brake caliper housing and coat with anti-squeak compound.

Fig 8: Identifying Contact Faces Of Brake Lining Hammer Heads

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Clean contact surface (3) of brake caliper and apply a thin coating of anti-squeak compound.

Fig 9: Identifying Contact Face Of Brake Caliper

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Clean brake caliper mounting bracket at hammer head guides and apply a thin coating of anti-squeak compound.

Fig 10: Locating Brake Caliper Mounting Bracket

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