Attention! If the brake discs are being finalized, then it is necessary to change to new and brake linings.
Removing
1. Mark with paint the position of the wheels relative to the hub. This will allow the assembly to set the balanced wheel in its original position.
2. Loosen the wheel bolts. The vehicle must be on wheels during this operation.
3. Place the vehicle on jack stands and remove the wheels.
Attention! There is a risk of injury when jacking up the vehicle and placing it on jackstands. Read the precautions in chapter «car jacking».
4. Remove the brake pads, see relevant chapter.
5. Remove the brake caliper, see relevant chapter.
Attention! The brake hose does not need to be disconnected from the caliper.
6. Secure the caliper with the connected brake hose to the body so that the hose is not twisted or under tension.
7. Fix the piston of the brake cylinder in the caliper with a wooden block so that it does not slip out during work.
8. Unscrew the bolt 1 of the brake disc 2 on the hub and remove the disc from the hub (see illustration).
Attention! If the brake disc is firmly seated on the hub, it can be knocked off with a light tap with a plastic mallet or removed using a conventional puller available from spare parts stores.
Installation
9. Remove rust, if any, from the brake disc flange and hub with a wire brush or sandpaper.
10. New brake disc. Remove the protective lacquer coating with a rag soaked in solvent.
11. Install the brake disc on the hub and secure it with a new self-locking bolt, tightening it to 10 Nm.
12. Install the caliper, see relevant chapter.
13. Install the brake pads, see relevant chapter.
14. Establish wheels according to the marks put at removal. Before doing this, lubricate the centering seat of the wheel disc on the hub with a thin layer of bearing grease. Do not grease wheel bolts. Replace rusted bolts with new ones.
15. Screw in bolts of fastening of wheels and lower the car.
Attention! Make sure that the brake hoses of the brake mechanisms of the front wheels will not be pinched and frayed when the steering wheel is turned.
16. Tighten the wheel bolts in a cross pattern to 110 Nm.
Attention! Squeeze out a few times a brake pedal against the stop, the strong resistance to pressing is not felt yet. When this action is performed, the brake pads are centered and they self-adjust to the working position.
17. Carefully run in new brake pads. To do this, slow down several times, bringing the speed from about 80 km / h to 40 km / h, and slightly pressing the brake pedal. Let the brakes cool down in between.
Attention! During the first 200 km of driving with new brake pads, avoid unnecessary braking until the car comes to a complete stop. Run in new brake pads carefully, taking into account the traffic situation.
Attention! Brake linings must not be disposed of with normal waste, as the dust that forms on them is hazardous to health. They need to be disposed of only at special points.
Attention! Make sure that:
- A) brake hoses are securely connected;
- b) the brake hose is fixed in the holder;
- V) fittings for bleeding the brake actuator are wrapped;
- G) there is enough brake fluid in the expansion tank.
18. Carry out a leak test of the brake system with the engine running.
To do this, depress the brake pedal with a force of 200-300 N (20-30 kg) for approximately 10 seconds. The pressure in the system and, accordingly, the resistance of the brake pedal, should not decrease.
Check all connections for tightness.