VOLKSWAGEN GOLF IV

since 1997 of release

Repair and car operation



Foltsvagen Golf 4
+ 1. Maintenance instruction
+ 2. Engine
+ 3. Cooling system
+ 4. Fuel system
+ 5. Exhaust system
+ 6. Ventilation and heating system
+ 7. Coupling
+ 8. Transmission
+ 9. Suspension brackets and power shafts
+ 10. Steering
+ 11. Wheels and tires
- 12. Brake system
   12.1. Technical characteristics
   + 12.2. ABS/EBV/EDS/ASR/MSR
   + 12.3. Replacement of forward brake shoes on FS-III support
   + 12.4. Replacement of brake shoes on FN-3 support
   + 12.5. Replacement of back brake shoes on disk brakes
   - 12.6. Brake disk
      12.6.1. Check of a brake disk
      12.6.2. Removal and installation
   12.7. Adjustment of the hand brake
   + 12.8. Replacement of back brake shoes on drum-type brakes
   12.9. Removal and installation of the back working brake cylinder
   + 12.10. Pumping of hydraulic brake system
   12.11. Brake pipelines and hoses
   12.12. Check of the vacuum amplifier of brakes
   12.13. Removal, installation and adjustment of the switch of a stoplight
   12.14. Removal and installation of cables of the hand brake
   12.15. Main malfunctions of brakes
+ 13. Body
+ 14. Electric equipment and electroschemes






12.6. Brake disk

12.6.1. Check of a brake disk

GENERAL INFORMATION

Prevention

At work of brake shoes the brake dust which contains asbestos, unhealthy forms. Therefore when cleaning brake shoes do not use the compressed air and do not inhale a dust.

In need of replacement of a brake disk it is also necessary to replace and the second brake disk for ensuring uniformity of braking. At replacement of brake disks it is also necessary to replace brake shoes.


PERFORMANCE ORDER
1. Tighten the hand brake, then lift a forward part of the car and fix on supports.
2. Remove the corresponding forward wheel.
3. Establish on a bolt of fastening of a wheel a washer in thickness of 10 mm and screw in a fastening bolt in an opening of a brake disk.
4. Slowly turn a brake disk so that it could be considered from two parties. Wear of a brake disk from blocks should be in admissible limits. If there are cracks on a disk, the disk is subject to replacement.
5. The indicator of hour type check palpation of a brake disk. The indicator of hour type fix in any convenient place and, turning a brake disk, define its palpation at distance of 10 mm from external edge.
6. Before check of palpation of a brake disk be convinced that the bearing of a nave is in a good condition.
7. Check a brake disk on existence of cracks, especially round openings under bolts of fastening of a wheel, and also on existence of wear or mechanical damages and, if necessary, replace it.
8. Measure thickness of a brake disk (shooters specified measurement places).
9. Because on perimeter of a brake disk there is a step, at measurement of thickness of a brake disk with use of a calliper enclose under calliper sponges two coins. For determination of true thickness of a brake disk subtract from calliper indications thickness of two coins.
10. Most conveniently also it is precisely possible to measure thickness of a brake disk with micrometer use.

Prevention

It is necessary to measure thickness of a brake disk in several points on a circle of a brake disk. It is necessary to take smallest of the measured values for true thickness of a brake disk.


11. In the presence of scratches or cracks a brake disk it is necessary to replace more than 0,5 mm with depth.