12.6.1. Check

Cleaning of a working surface of a brake disk with a small emery paper

The minimum thickness of a brake disk is beaten out on an internal surface of a brake disk.

Measurement of thickness of a brake disk

1. Lift respectively a forward or back part of the car and record on supports. Remove the corresponding wheel.
2. Remove a support and, using a soft wire, tie it to a rack, without disconnecting from it a brake hose. Establish under nuts of fastening of a wheel of a washer 10 mm thick and screw nuts of fastening of a wheel. Unscrew two bolts and remove the holder of a support.
3. Slowly turn a brake disk so that it could be considered from two parties. Wear of a brake disk from blocks has to be in admissible limits. If wear exceeds an admissible limit, or there are cracks on a disk, the disk is subject to replacement.
4. The indicator of hour type check a beating of a brake disk. Fix the indicator of hour type in any convenient place and, turning a disk, define its beating at distance of 10 mm from the outer edge.