Audi 100/A6

1990-1997 of release

Repair and car operation

Audi 100/A6
+ 1. Maintenance instruction
+ 2. Maintenance
+ 3. Engines
+ 3.2. Diesel engines
+ 3.3. Removal and partition of engines
+ 4. Cooling system
+ 5. Heating and ventilation
+ 6. Fuel system
+ 7. Exhaust system
+ 8. Systems of start, ignition
+ 9. Transmission
- 10. Brake system
   + 10.1.2. Shock-absorbers
   + 10.2. Technical characteristics
   10.3. Pumping of hydraulic system
   10.4. Hydraulic tubes and hoses
   10.5. Brake overlays of forward brakes
   10.6. Brake overlays of back wheels
   10.7. Brake shoes of back brakes
   10.8. Brake disk of a forward wheel
   10.9. Brake disk of a back wheel
   10.10. Brake drum of a back brake
   10.11. Support of a forward brake
   10.12. Support of a back brake
   10.13. Wheel cylinder of a back brake
   10.14. Main brake cylinder
   10.15. Brake pedal
   10.16. Vaakuumny amplifier
   10.17. Vacuum valve of a servoamplifier
   10.18. Rope of the hand brake
   10.19. Lever of the hand brake
   10.20. The valve of adjustment of pressure in a contour of back brakes (to 96 g of century)
   10.21. Switch of fires of a stoplight
   10.22. General description of system of anti-blocking of brakes (ABS)
   10.23. ABS system elements
   10.24. Vacuum pump (diesel and petrol engines in volume of 2,3 l)
+ 11. Suspension brackets, steering
+ 12. Body
+ 13. Electric equipment
+ 14. Good advice


10.16. Vaakuumny amplifier


1. Squeeze out a brake pedal several times and start the engine. The pedal should fall a little. Let's to the engine work some minutes and muffle it. Press a brake pedal, it should have normal rigidity. After several pressing the pedal should become much more rigid.
2. If the vacuum amplifier does not work how was described above, check the vacuum valve and if it is necessary the vacuum pump.
3. If the vacuum valve and the pump as it should be, replace the vacuum amplifier.


1. Remove the main brake cylinder.
2. Disconnect a vacuum hose.
3. Disconnect a pusher of the vacuum amplifier from a brake pedal.
4. Turn off fixing nuts and remove the vacuum amplifier.


1. Before installation check, that the distance from the opening center in a pusher fork to a surface of the amplifier was 230±0,5 mm ("and"). Tighten up a pusher fork if it is necessary.
2. Installation is carried out upside-down removals.