The brake pads must be replaced in pairs, i.e. on both wheels of the same axle. Replacing the parking brake pads is described in Section Replacing the parking brake pads and their expansion mechanism.
1. Remove wheels.
Models with floating calipers (front wheels)
1. Remove retaining spring (1). Disconnect the brake pad wear sensor connector on the left, replace the sensor if necessary.
2. Remove the plastic caps (2) and remove the brake hose from the holder. Turn out the guide pins located under the caps and remove the caliper by pulling it back.
When installing, clean (but don't grease!) guide pins, check thread condition and replace pins if necessary.
3. Move the piston as far as possible inside the wheel cylinder. To do this, you can use, for example, tool No. 34 1 050.
When moving the piston, keep an eye on the level of the brake fluid and do not allow it to overflow over the edge of the reservoir.
4. Remove the outer brake shoe. In this case, the clamping spring holds the inner shoe on the piston. Mark worn pads and do not confuse them if there is one-sided wear. Clean the brake pads.
Do not apply grease to the rear pad plate.
5. Check the boot (1) for damage and replace if necessary. Clean the contact surface (2) piston of the brake cylinder and apply a thin layer of paste to it to prevent squealing of brake parts.
Do not allow the paste to come into contact with the anther, as it may swell under its influence.
6. Clean the mating surfaces of the T-shaped ends of the brake pads and the caliper body and lubricate them with a thin layer of paste that prevents squealing of the brake mechanism parts.
7. Installation is carried out in the reverse order.
8. At the end of the work, depress the brake pedal several times so that the brake pads take up their working position relative to the brake discs.
9. When installing new brake pads on the front and rear wheels, bring the brake fluid level to the mark «MAX».
10. Hold the ignition key for at least 30 seconds in the «1», without starting the engine. This clears the fault code and prevents the reactivation of the K / L wear of the brake linings.
Models with fixed calipers (front wheels)
1. Disconnect the connector (1) brake pad wear sensor, remove the guide pins (2) and remove the retaining spring (3).
2. Remove the brake pads using a puller no. 34 1 010. Mark the used pads and do not confuse them if there is one-sided wear. Clean the brake pads.
Do not allow the paste to come into contact with the anther, as it may swell under its influence.
3. If the pads are jammed, knock them out using special tool No. 34 1 000.
4. Move the piston as far as possible inside the wheel cylinder using tool no. 34 1 050.
When moving the piston, keep an eye on the level of the brake fluid and do not allow it to overflow over the edge of the reservoir.
5. Clean the caliper brake pad guides, check the anthers for damage and, if necessary, replace the anthers.
6. Installation is carried out in the reverse order.
Do not apply grease to the brake pad guides and piston contact surfaces of the Brembo aluminum caliper.
7. Follow the steps described in paragraphs with 8 by 10.
Models with floating calipers (rear wheels)
1. Remove the plastic caps (1). Disconnect the brake pad wear sensor connector on the left, replace the sensor if necessary.
2. Turn out the directing fingers located under caps.
When installing, clean (but don't grease!) guide pins, check thread condition and replace pins if necessary.
3. Remove retaining spring (3) and the caliper by pulling it back.
4. Follow the steps described in paragraphs with 3 to 10.