Withdrawal
Remove rear brake caliper. Do not unscrew the brake hose, otherwise the ambassador of the assembly from the brake system air will need to be removed.
Hang the caliper to the body using a hook made from wire. Make sure that the brake hose is not twisted.
Remove securing bolt -arrow- with a 5 mm hexagon socket wrench.
Release the parking brake completely.
Remove brake disc. If the brake disc is not removed, the parking brake pads pull off the brake drum.
Installation
In order to guarantee uniform braking on both sides of the axle, both brake discs must have the same surfaces in terms of wear pattern and roughness depth. Therefore, it is imperative to replace or grind both brake discs of the axle.
In the workshop, brake discs can be boiled for runout. The maximum measured runout value of the brake surface of the installed disc must not exceed 0.2 mm.
Measure disc thickness.
Clean new brake discs from the protective pack with a nitro thinner.
Slide the brake disc onto the rear wheel hub and secure with a socket head cap screw. First turn the brake disc so that the bolt holes in the disc and hub match.
Insert caliper with installed brake pads. In this case, the brake hose must not twist and stretch. Tighten the caliper bolts.
Attention: If the brake hose has been removed, screw on the brake hose and bleed the air from the brake system, see p. 107.
Adjust handbrake.
Screw on the rear wheels. Do not grease wheel bolts. Attach the wheels so that the parade applied by removing the uterus coincides. Lower vehicle, tighten wheel bolts crosswise to 100 Nm.
Caution: Depress the brake pedal strongly repeatedly until strong resistance is felt. In this case, the brake linings are applied to the discs and occupy a position that meets the operating conditions.
Boil the brake fluid level in the compensation tank and, if necessary, top up the level to the MAX mark.
Attention. Run a security compliance check:
- Firmly tighten the brake hoses?
- Is the brake hose in the holder?
- Are the air bleed valves tight?
- Is there enough fluid in the brake system?
- With the engine running, perform a leak test. To do this, act on the brake pedal with a force of 200 to 300 N for about 10 seconds (from 20 to 30 kg). Do not release the brake pedal. Check all connections for tightness.
Run in new brake discs in three phases.
- Phase 1: Five hard brakings at 50 km/h on an empty street.
- Phase 2: Allow the brakes to cool down.
- Phase 3: five new brakings at 50 km/h.