Opel Astra A

1991-1998 of release

Repair and operation of the car

Opel Astra A
+ 1. Maintenance instruction
+ 2. Maintenance
+ 3. Engines
+ 4. Ventilation and heating
+ 5. Power supply system
+ 6. System of decrease in toxicity
+ 7. Coupling
+ 8. Transmissions
+ 9. Half shafts
- 10. Brake system
   10.1. Technical characteristics
   10.2. System of anti-blocking of brakes (ABS)
   10.3. Protivobuksovochny system
   10.4. Hydraulic system
   10.5. Hydraulic tubes and hoses
   10.6. Brake overlays of forward brakes
   10.7. Support of a forward brake
   10.8. Brake disk
   10.9. Protective guard of a forward disk brake
   10:10. Brake shoes of back brakes
   10:11. Brake drum of back brakes
   10:12. Wheel cylinder of a back brake
   10:13. Brake overlays of back brakes
   10:14. A support of a back brake (model with back disk brakes)
   10:15. Brake overlays of the emergency brake
   10:16. Guard of a back brake
   10:17. Brake pedal
   10:18. Vacuum amplifier
   10:19. Unilateral valve (servoamplifier)
   10:20. Main brake cylinder
   10:21. Emergency brake
   10:22. Lever of the emergency brake
   10:23. Ropes of the emergency brake
   10:24. The valve of restriction of pressure in a contour of back brakes
   10:25. Switch of fires of a stoplight
   10:26. Switch of alarm bulbs of the brake system
   10:27. ABS modulator
   10:28. ABS wheel sensor of a forward wheel
   10:29. Electronic control unit and ABS relay
   10:30. Case of a butterfly valve
   10:31. Vacuum diaphragm of a butterfly valve (antitowing system)
   10:32. Electronic control unit (antitowing system)
   10:33. Switch of antitowing system
+ 11. Suspension bracket and steering
+ 12. Body
+ 13. Electric equipment
+ 14. Electrical circuitries


10.3. Protivobuksovochny system


Protivobuksovochny system

1 – case of a butterfly valve;
2 – the diaphragm regulating the provision of a butterfly valve;
3 – the ABS sensor on a forward wheel;
4 – the ABS sensor on a back wheel;
5 – electronic control unit;
6 – switch;
7 – ABS hydraulic modulator;
8 – alarm bulb

The Protivobuksovochny system is installed on some models and monitors coupling of tires with the road, preventing pro-slipping of wheels.

Control of protivobuksovochny system is exercised of an electronic control unit which obtains information from control units of the engine and the ABS system. The electronic control unit changes the provision of an additional butterfly valve, thus, regulating the speed of operation of the engine and torque.

In certain cases the electronic control unit of protivobuksovochny system sends a signal to an engine electronic control unit for suspension of injection of fuel and ignition that sharply reduces torque.

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