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


10:12. Wheel cylinder of a back brake


Elements of the wheel cylinder of a back brake

1 – dustproof cap;
2 – pumping valve;
3 – cylinder;
4 – consolidation;
5 – piston;
6 – consolidation of the piston;
7 – spring


1. Remove the brake drum.
2. Disconnect the top returnable spring from blocks and part blocks in the parties.
3. Close hermetically polyethylene film a mouth of a tank of brake fluid.
4. Turn off a nut of connection of a brake tube and disconnect it.
5. Turn off two fixing bolts and remove the wheel cylinder.


1. Clear the wheel cylinder and remove rubber dustproof covers from the ends of the cylinder.
2. Pistons have to leave if is not present – squeeze out them compressed air.
3. Examine pistons and walls of the cylinder on existence of scratches or wear tracks. Replace the wheel cylinder if it is necessary.
4. Get the repair kit containing all elements which need to be replaced.
5. Grease consolidations of pistons with brake fluid and install them in the cylinder, having inserted between them springs.
6. Dip pistons in brake fluid and insert them into the cylinder.
7. Establish dustproof covers.


1. Install the wheel cylinder on a guard of a brake and tighten fixing bolts.
2. Connect a brake tube and tighten a connection nut.
3. Press blocks to pistons and connect the top returnable spring.
4. Install the brake drum. Adjust the brake mechanism, having squeezed out a brake pedal several times.

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