4.3.26. Check of degree of wear of brake shoes, disks and drums

It be required to you: calliper or ruler.

Note If when braking the car withdraws aside or extraneous noise is audible, check a condition of brake shoes.

1. Establish the car on the lift or a jack (supports).

2. Remove a forward wheel.

3. Check through an opening in the case of a brake bracket a condition of blocks. If thickness of frictional overlays of less admissible (tab. 4.3), replace brake shoes (see. «Replacement of brake shoes of the brake mechanism of a forward wheel»).	4. Measure thickness of a brake disk. If its thickness of less admissible (see tab. 4.3), replace a brake disk (see. «Replacement of a brake disk»).

Note Minimum admissible thickness of a brake disk is specified on a flange of a brake disk.

5. For check of degree of wear of brake shoes of the back brake mechanism remove a back wheel and a brake drum (see. «Removal and installation of a brake drum»).	6. Measure thickness of a frictional slip together with the basis. If thickness of less admissible (see tab. 4.3), replace blocks (see. «Replacement of brake shoes of the brake mechanism of a back wheel»).

Note Replace blocks in the following cases: – thickness of frictional slips less than 2 mm; – the surface of slips is greasy; – slips are unsteadily connected to the basis.

7. Measure diameter of a working surface of a brake drum. If it more admissible (see tab. 4.3), replace a drum (see. «Replacement of a brake drum»).

Note The most admissible working diameter of a brake drum is specified (in inches) on its outer side.