Replacing the brake disc of the rear wheel brake mechanism (Chevrolet Cruze J300)

If there are burrs, deep scratches and other defects on the working surface of the disc that increase pad wear and reduce braking efficiency, as well as in the case of increased lateral runout of the disc that causes vibrations during braking, replace the disc. In specialized workshops, such a disc can be turned and ground on both sides to the same depth, but after processing, the thickness of the disc must not be less than the minimum permissible.

The minimum permissible thickness of the brake disc of the rear wheel brake mechanism is 10 mm. If the thickness of one of the discs is less than the specified one, replace both discs. When replacing the brake discs, be sure to replace the brake pads with a new set.

You will need: TORX key, wheel nut key.

I. Remove the wheel from the side of the caliper being replaced.



2. Unscrew the bolts securing the brake shoe guide to the bracket



3. Remove the caliper assembly without disconnecting the brake hose.





4. ...and secure the support with wire, preventing the hose from twisting or being pulled.



5. While holding the hub from turning with a tire iron, adjust the screw that secures the brake disc to the rear hub...



6. ...and remove the disc from the wheel hub.

7. Install the parts in the reverse order of removal.

Note: Before installing the disc, thoroughly clean the mating surfaces of the hub and disc from rust and scale, since even the smallest particle clamped between the mating surfaces will cause disc beating and vibration during braking.

8. Press the brake pedal all the way down several times. This is necessary to eliminate the gaps in the brake mechanism that appeared after the pistons were pressed into the cylinders.

9. Install the wheel.

10. Remove the brake disc of the other wheel in the same way.