34 21 745 Removing and installing/replacing left or right rear brake caliper

Necessary preliminary tasks: 

• Remove WHEEL
• Read and comply with GENERAL INFORMATION  .

After completing repair work: BLEED BRAKE SYSTEM .

Press clutch pedal down to floor and secure with pedal support.

This prevents brake fluid from emerging from the expansion tank and air from entering the system when the brake lines are opened.

Fig 1: Pressing Clutch Pedal Down

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Disconnect brake hose from brake line (1).

Installation note: 

Tightening torque 34 32 1AZ .

Fig 2: Identifying Brake Hose And Brake Line

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Detach brake hose (1) from brake caliper.

Installation note: 

Tightening torque 34 32 3AZ .

Fig 3: Identifying Brake Hose

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If necessary, remove BRAKE PAD WEAR SENSOR  .

Lift out retaining spring (1).

Fig 4: Identifying Retaining Spring

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Remove cover plug (1).

Fig 5: Identifying Cover Plug

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Unscrew guide bolts (1).

Withdraw brake caliper backwards.

Installation note: 

Tightening torque 34 21 4AZ .

Clean guide screws only; do not grease.

Check threads.

Replace all guide screws which are not in perfect condition.

Fig 6: Identifying Guide Bolts

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In the event of one-sided brake pad wear, do not change brake pads round.

Remove brake pads in direction of arrow.

If necessary, clean BRAKE CALIPER AND PADS .

Fig 7: Removing Brake Pads

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