9.8.4. Replacement of a brake disk

In the presence on a working surface of a disk of zadir, deep рисок and other defects increasing wear of blocks and reducing efficiency of braking and also in case of the raised side beating of the disk causing vibrations when braking, replace a disk. In specialized workshops such disk can be pierced and proshlifovat on both sides on identical depth, but after processing thickness of a disk has to be not less minimum admissible.
Minimum admissible thickness of a brake disk is 20,4 mm. If thickness of one of disks is less than specified value, replace both disks. When replacing brake disks surely replace brake shoes with a new set.
You will need the screw-driver with a flat edge.
1. Remove the left wheel.
2. Remove the block of cylinders of the brake mechanism (see. "Replacement of the block of cylinders of the brake mechanism of a forward wheel"), without disconnecting from it a brake hose …
3. … also fix by a wire, without allowing twisting or a tension of a hose.
4. Remove a support of the brake mechanism (see. "Replacement of a support of the brake mechanism of a forward wheel").
5. Turn out three screws of fastening of a brake disk to a wheel nave.

Good advice
For a reversing of screws of fastening of a brake disk use an impact driver.

6. Remove a brake disk from a wheel nave.
7. Establish details as it should be, the return to removal.

Note
Before installation of a disk carefully clear privalochny surfaces of a nave and a disk of a rust and scale as even the smallest particle clamped between privalochny surfaces will cause a beating of a disk and vibration when braking.

Good advice
If you establish a former disk, remove with a file the fillets on working surfaces of a disk formed from both of its parties as a result of wear.

8. Similarly replace a brake disk of the brake mechanism of the right wheel.