Opel Vectra B

since 1995 of release

Repair and car operation

Vektr B. Opel
+ 1.1. Governing bodies and control devices
+ 2. Maintenance
+ 3. Engines
+ 4. Heating, ventilation
+ 5. Fuel system
+ 6. Systems of start, ignition
+ 7. Transmission
- 8. Brake system
   8.1. Introduction
   8.2. Technical characteristics
   8.3. Pumping of hydraulic brake system
   8.4. Brake pipelines and hoses
   8.5. Replacement of forward brake shoes
   8.6. Replacement of back brake shoes on disk brakes
   8.7. Replacement of back brake shoes on drum-type brakes
   8.8. Replacement of brake shoes of the hand brake
   8.9. Lobbies and back brake disks
   8.10. Forward brake disk
   8.11. Back brake disk
   8.12. Back brake drum
   8.13. Forward support
   8.14. Back support
   8.15. Back working brake cylinder
   8.16. Main brake cylinder
   8.17. Brake pedal
   8.18. Vacuum amplifier of brakes
   8.19. Unilateral valve of the vacuum amplifier of brakes
   8.20. Adjustment of the hand brake
   8.21. Lever of the hand brake
   8.22. Cable of the hand brake
   8.23. Anti-blocking system of brakes (ABS)
   + 8.24. Elements of anti-blocking system of brakes
+ 9. Running gear
+ 10. Body
+ 11. Electric equipment
+ 12. Main malfunctions


8.3. Pumping of hydraulic brake system


Pumping of a hydraulic actuator of brakes is necessary for removal of air which considerably reduces efficiency of braking. Air can get to a hydraulic actuator owing to system depressurization at repair, replacement of separate knots or brake liquid. To availability of air in a drive point the increased course of a pedal of a brake and its "softness". Before removal of air check tightness of all knots of a drive of brakes and their connections.

Carry out pumping of all system of a drive of brakes in the following sequence:

  – left back wheel;
  – right forward wheel;
  – right back wheel;
  – left forward wheel.

1. Remove a dustproof cap (shooter) from the union of pumping of the wheel cylinder, clear it and dress on it the pure transparent hose which other end lower in the capacity which has been partially filled with brake liquid. The capacity should be at least on 300 mm above the pumping union. Thanks to it air hit in the cylinder through a carving of the union of pumping is prevented.
2. Sharply press a pedal of a brake of 3-5 times with an interval of 2-3 seconds, unscrew on a half of turn the pumping union at the pressed pedal.
3. Continuing to press a pedal, force out the liquid which was in system together with air through a hose in capacity. After the pedal will reach extreme forward situation and the liquid effluence through a hose will stop, screw the pumping union home. Repeat these operations the air outlet from a hose will not stop yet.
4. Remove fastening of a brake hose.
5. Holding a pedal in the pressed situation, screw up the pumping union against the stop and remove a hose.
6. Wipe the union of pumping and establish a protective cap.
7. Repeat these operations for other wheels.


At air removal constantly watch availability of brake liquid in a tank, without allowing an exposure of its bottom since thus air again will get to system.

8. At absence the pedal should pass about a half of the course in system of brakes of air. To exclude influence of the vacuum amplifier on pumping of brakes, removal of air make at the idle engine.