Audi 100

1982-1990 of release

Repair and operation of the car

Audi 100
+ 1.1. Governing bodies and devices
+ 2. Technical characteristics
+ 3. Engines
+ 4. Cooling system
+ 5. Exhaust system
+ 6. Power supply system
+ 7. Transmission
+ 8. Running gear
+ 9. Steering
- 10. Brake system
   10.1. Technical characteristics
   10.2. Adjustment of provision of a pedal of a brake
   10.3. Main cylinder of a brake
   10.4. Brake mechanism of a forward wheel of the Teves brand
   10.5. Brake mechanism of a forward wheel of the GIRLING brand
   10.6. Brake disk
   10.7. Case of a bracket and piston
   10.8. Drum brake mechanism of a back wheel
   10.9. Brake drum
   10.10. Wheel brake cylinder
   10.11. Disk brake mechanism of a back wheel
   10.12. Pressure regulator
   + 10.13. Parking brake
   10.14. Anti-blocking system of brakes (ABS)
   10.15. Pumping of brake system
+ 11. Body
+ 12. Electric equipment

10.3. Main cylinder of a brake


Main brake cylinder

1 – case;

2 – sealing plug;

3 – union;

4 – tank;

5 – filter;

6 – sealing ring;

7 – cover;

8 – rubber sealant;

9 – pipeline;

10 – bolt


1. To disconnect a wire from the "minus" plug of the battery.
2. To clear of dirt of a place of connection of pipelines to the main cylinder.
3. To disconnect wires from plugs of the sensor of the level of brake fluid established in a cover of a tank of the main cylinder and to uncover.
4. To turn off nuts of fastening and to disconnect pipelines from the case of the main cylinder of a brake. To muffle openings of pipelines.
5. To turn off two bolts of fastening of the main cylinder to the vacuum amplifier and to remove the main cylinder of a brake with a tank. Thus to watch that the rubber sealant of the cylinder did not drop out.
6. To turn the main cylinder and to merge in capacity brake fluid from a tank. Then several times to press the piston of the main cylinder, having removed with that of it liquid.


The main cylinder as it should be, the return to removal is installed. After installation it is necessary to pump over brake system (see subsection 10.15).