2. Remove the wheels and tighten the wheel nuts back into place to secure the disc to the hub (to ensure that force is applied to the disc, washers can be put on).
3. Release the handbrake.
4. On the front disc brakes, remove the pads, remove the caliper, move it to the side and secure it.
5. On the rear brakes, remove the caliper bracket by unscrewing the bolts.
6. Check the condition of the disc on both sides. If traces of deep wear are found (depth more than 1.0 mm) remove the disc and sand it.
7. Check the runout by placing a dial indicator 13 mm from the edge of the disc.
8. If the runout on the indicator exceeds the norm, remove the disk and grind it.
Attention! It is recommended to periodically remove the disk and grind it depending on the indicator readings. At least, this can be done by hand with fine sandpaper to reduce roughness.
9. After grinding, the thickness of the disc should not be less than the maximum permissible, which is cast on the disc. The value of the maximum diameter of the brake drum of the handbrake is indicated on the right.
10. Check the thickness of the disc. Measure the thickness in several places.
11. After checking, remove the hub, unscrew the bolts and remove the disc.
12. When assembling, tighten the bolts to the specified torque and adjust the bearings.
Attention! On cars before 1990 it is necessary to press out the hub studs.
13. Remove the rear disc by unscrewing the temporarily tightened nuts.
14. If the disc cannot be removed, loosen the handbrake adjusting screw and knock off the disc with a rubber hammer.
15. When assembling the front brakes, apply grease and adjust the bearings (see subsection 2.39).
16. Install the rear disc onto the studs, install the caliper bracket and tighten all fasteners to the specified torque.
17. Install the pads and noise insulation plates.
18. Install the caliper and tighten the mounting bolts.
19. After assembly, press the brake pedal several times.
20. Check the operation of the brakes.