Opel Vectra B

since 1995 release

Repair and operation of the car



Vektr's Opel of B
+ 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 the hydraulic brake system
   8.4. Brake pipelines and hoses
   8.5. Replacement of front brake shoes
   8.6. Replacement of back brake shoes on disk brakes
   8.7. Replacement of back brake shoes on drum brakes
   8.8. Replacement of brake shoes of the emergency 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 emergency brake
   8.21. Lever of the emergency brake
   8.22. Cable of the emergency 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



8.18. Vacuum amplifier of brakes

Check

Press a brake pedal several times at not working engine to create the identical pressure close to atmospheric in cavities of the vacuum amplifier. At the same time determine by the effort enclosed to a pedal whether there is no jamming of the case of the valve. Stop a brake pedal in the middle of its course and start the engine. At the serviceable vacuum amplifier the brake pedal after start of the engine has to leave forward. If the pedal does not leave forward, check fastening of a tip of a hose, a condition of fastening of a flange of a tip in the amplifier, a condition of a hose and the union. On cars with diesel engines check operability of the vacuum pump.

Removal

PERFORMANCE ORDER
1. Remove the lower finishing of the dashboard.
2. Working under the panel from the driver, disconnect a pedal pusher from the piston of the vacuum amplifier.
3. Remove rubber consolidation from the top part of a partition of a motor compartment.
4. Remove the main brake cylinder.
5. Remove a plait of wires over the vacuum amplifier of brakes.
6. Remove the hydraulic modulator of the ABS system and the control unit.
7. Using the lever, take the unilateral valve from the vacuum amplifier of brakes.
8. Unscrew nuts and remove the vacuum amplifier of brakes from a motor compartment up.

Installation

PERFORMANCE ORDER
1. Before installation of the vacuum amplifier of brakes measure distance from the end of a pusher of the vacuum amplifier to the interfaced surface of the main brake cylinder which has to make 149.5 mm.
2. If adjustment is necessary, weaken a lock-nut (2) and, turning a pusher (1), establish the required distance.
3. Establish the vacuum amplifier on a partition of a motor compartment, combining with a pedal pusher, and fix by nuts.
4. Install the unilateral valve in the condensing ring of the vacuum amplifier of brakes.
5. Install the hydraulic modulator of the ABS system and the control unit.
6. Establish into place a plait of wires.
7. Install the main brake cylinder.
8. Establish rubber consolidation on the top part of a partition of a motor compartment.
9. Connect a brake pedal to a pusher.
10. Establish finishing of the lower part of the dashboard.