Mercedes S-class W202

1993-2000 of release

Repair and car operation

Mercedes W202
+ 1.2. The general data
+ 2. Maintenance service
+ 3. Engines
+ 4. Greasing system
+ 5. Cooling system
+ 6. Heating, ventilation
+ 7. Ignition system
+ 8. Fuel system
+ 9. Transmission
+ 10. A running gear
+ 11. A steering
- 12. Brake system
   12.2. Antiblocking system – ABS
   12.3. The additional equipment – system ASR
   12.4. Specifications of brake system
   12.5. Overlays of lobbies brake колодок
   - 12.6. Overlays of back disk brakes
      12.6.1. Check of a thickness of brake disks and their lateral palpation
   12.7. A support
   12.8. A forward brake disk
   12.9. A back brake disk
   12.10. A brake liquid
   12.11. Removal of air from brake system
   12.12. Brake pipelines / hoses
   12.13. Replacement of brake highways
   12.14. Brake колодки a lay brake
   12.15. Adjustment of a lay brake
   12.16. The stoplight switch
   12.17. Diagnostics of malfunctions of brakes
   + 12.18. Wheels and tyres
+ 13. A body
+ 14. An electric equipment
+ 14.2. Electroschemes

12.6.1. Check of a thickness of brake disks and their lateral palpation
1. Mark with a paint position of wheels concerning a nave. Thanks to it отбалансированное the wheel after removal can be put on the place that balancing was not broke. Release wheel bolts, without lifting the car, then Raise the car and remove wheels.
2. Measure a thickness of brake disks. In workshops the micrometer or a special calliper (035) as at deterioration on the brink of a disk the fillet is formed is for this purpose used. It is possible to measure a thickness of disks and a usual calliper, but in this case on each party of a brake disk it is necessary to use on a rigid lining (for example, 2 coins). To learn thus a thickness of a disk, it is necessary to subtract a thickness of linings from indications.

The prevention

At more exact measurements by means of a micrometer it is necessary to spend measurements at least in eight points of a disk. Thus the thickness should remain a constant within the admission of 0,02 mm.

3. On reaching the minimum thickness it is possible to change brake overlays once again. If the deterioration border is reached, replace brake disks.
4. Cooled brake disks with thin cracks to 25 mm of length which can arise because of high loading replace there is no necessity. At the big cracks or roughnesses 0,5 mm are deeper replace disks.
5. Repair of brake disks is inadmissible. It is necessary to replace both disks with axes.
6. If on hand there is an hour indicator, measure lateral palpation of a brake disk in the collected condition. The hour indicator of small movings put in the centre of a brake surface.

The prevention

Too big lateral palpation can be a consequence of the increased backlash in wheel bearings, therefore, first of all, it is necessary to adjust this backlash. If it has given nothing – replace a brake disk.

7. Put wheels so that the marks put before their removal have coincided. Screw wheels. Remove the car from supports and tighten wheel bolts in a crosswise order with the moment 110 Н.м.