Note: Brake discs cannot be ground. If they are significantly worn or have deep scratches, they must be replaced.
When replacing brake discs, also replace the brake pads.
Place the car on a lift.
Unlock the steering wheel. Remove the front wheels.
Remove the two mounting bolts (1) of the brake shoe guide.
Hang the caliper assembly with the pad guide.
Measuring the thickness of the brake disc
Install the micrometer (1) to measure the thickness of the brake disc. Measure the thickness of the brake disc in order at the four points shown in the figure around the circumference (at 90°).
Standard thickness of front brake discs: 24-26 mm (depending on the disc diameter).
If the thickness is less than specified, replace the discs.
Remove the brake shoe guide.
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Source is located on the website www.renaultbook.ru
Remove the two screws (1) securing the brake disc.
Remove the brake disc.
Examination
Check the inner cylinder walls for corrosion, wear and damage. Replace the cylinder body if necessary. Minor defects caused by corrosion or foreign particles can be removed by sanding the surface with fine emery cloth. Replace the cylinder body if necessary. Check for wear, cracks and damage. Replace the component if necessary. Check the piston surface for corrosion, wear and damage. Replace the component if necessary. Check the guide pin and guide pin boot for corrosion, wear and damage. Replace the component if necessary. Check the brake disc surface for uneven wear, cracks and serious damage.
Installation
Clean the brake pad guides and calipers.
Installation is carried out in the reverse order of removal.
Tighten to the specified torque:
- brake disc mounting screws (15 Nm);
- shoe guide mounting bolts (105 Nm).
Before installation, apply FRENEBLOC to the threads of the shoe guide mounting bolts (or its equivalent).
Install the wheels.