Opel Vectra A

since 1988-1995 of release

Repair and car operation



Vektr A. Opel
+ 1. Maintenance instruction
+ 1.1 Maintenance
+ 2. Engine
+ 3. Repair of DOHC engines
+ 4. Repair of the diesel engine
+ 5. Cooling system
+ 6. Fuel system
+ 7. A fuel and exhaust system of models with system of injection of fuel
+ 8. Exhaust system and system of fall of toxicity of exhaust gases
+ 9. Fuel systems of the diesel engine
+ 10. Engine electrosystems
+ 11. Transmission
+ 12. Mechanical transmission
+ 13. Automatic transmission
+ 14. Power shafts
- 15. Brake system
   15.2. General information
   15.3. Anti-blocking system of brakes (ABS)
   15.4. Pumping of hydraulic brake system
   + 15.5. Replacement of forward brake shoes
   15.6. Replacement of back brake shoes on disk brakes
   + 15.7. Replacement of back brake shoes on drum-type brakes
   15.8. Replacement of brake shoes of the hand brake on back disk brakes
   15.9. Support of a forward brake
   15.10. Support of a back disk brake
   15.11. Brake disk
   15.12. Forward brake disk
   15.13. A back brake disk on models with SOHC engines
   15.14. A back brake disk on models with DOHC engines
   15.15. Brake drum
   15.16. Back working brake cylinder
   15.17. Brake board of a back brake
   15.18. Protective casing of a forward brake disk
   15.19. Main brake cylinder
   15.20. Repair of the main brake cylinder (model without ABS)
   15.21. Vacuum amplifier of brakes
   15.22. Hydraulic ABS modulator
   15.23. The ABS sensors established on wheels
   15.24. ABS control unit
   15.25. ABS relay (only ABS-2E system)
   15.26. Valves of adjustment of pressure
   15.27. Brake pipelines and hoses
   15.28. Adjustment of the hand brake
   + 15.29. Cable of the hand brake
   15.30. Lever of the hand brake
   15.31. Brake pedal
+ 16. Suspension bracket
+ 17. Body
+ 18. Electric equipment
+ 19. Check of malfunctions



15.21. Vacuum amplifier of brakes

GENERAL INFORMATION

The vacuum amplifier of brakes reduces effort on a brake pedal, facilitating thereby driving. Operation of the vacuum amplifier of brakes is based on depression use in an inlet collector. At an exit of the vacuum amplifier out of operation operability of brake system is not broken, but for pressing of a pedal of a brake it is necessary to make the bigger effort is considerable.

Check

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

In 1989 a part of cars were made with height of installation of a pedal of a brake on 15 mm above a coupling pedal. Normal installation of a pedal of a brake on 4 mm is lower than a coupling pedal. If necessary adjust height of installation of a pedal of a brake for what change length of a pusher of the vacuum amplifier of brakes, rotating a fork on a pusher.


Removal

Removal of caps for access to bolts of fastening of the vacuum amplifier of brakes

Arrangement of a bolt of fastening of the vacuum amplifier of brakes

Vyvinchivaniye of bolts of fastening of the vacuum amplifier of brakes

Removal of the vacuum amplifier of brakes from a partition of a motor compartment

PERFORMANCE ORDER
1. Remove a weight wire from the accumulator.
2. In salon of the car remove the bottom furnish of the dashboard from the driver.
3. Disconnect the electric socket from the switch of lamps of stoplights, then, rotating counter-clockwise, unscrew the switch of stoplights and remove it from an arm.
4. Remove a spring bracket on the right side of the sharnirny finger, a pusher of the vacuum amplifier of brakes fixing a fork to a brake pedal.
5. Using flat-nose pliers, remove a returnable spring from a brake pedal, then take the sharnirny finger, fixing a fork of a rod of the vacuum amplifier of brakes to a brake pedal.
6. Remove a fairing located in the lower part of a windscreen, then remove the engine and drafts of a screen wiper.
7. Remove a broad tank.
8. Disconnect a vacuum tube from the vacuum amplifier of brakes.
9. Unscrew two nuts, fixing the main brake cylinder to the vacuum amplifier of brakes. Remove the main brake cylinder from racks of the vacuum amplifier of brakes and move forward, without deforming thus brake tubes.
10. Remove two caps closing bolts of fastening of the vacuum amplifier of brakes (see fig. Removal of caps for access to bolts of fastening of the vacuum amplifier of brakes, the Arrangement of a bolt of fastening of the vacuum amplifier of brakes).
11. Using a face key, unscrew bolts and remove the vacuum amplifier from a partition of a motor compartment (see Vyvinchivaniye's fig. of bolts of fastening of the vacuum amplifier of brakes, Removal of the vacuum amplifier of brakes from a partition of a motor compartment).
12. If necessary unscrew four nuts and remove from the vacuum amplifier of brakes an arm. The arm is established on the vacuum amplifier of brakes on hermetic.
13. If the vacuum amplifier of brakes is faulty, replace it as his repair is not provided.

Installation

Distance measurement from an end face of the vacuum amplifier of brakes to the opening center in a fork

PERFORMANCE ORDER
1. Before installation of the vacuum amplifier of brakes check length of a rod with a fork.
2. Measure distance from an end face of the case of the vacuum amplifier of brakes to the opening center in a fork which should make 144,0 mm. For simplification of measurement insert into a fork opening the corresponding steel core and measure distance to a core axis (see fig. Distance measurement from an end face of the vacuum amplifier of brakes to the opening center in a fork).
3. If it is necessary to make adjustment of length of a rod with a fork, weaken a lock-nut and, rotating a fork, establish the demanded distance, then tighten a lock-nut.
4. Apply a thin film hermetic on interfaced surfaces of the vacuum amplifier of brakes and an arm, then establish an arm on the vacuum amplifier and fix nuts, having tightened them the demanded moment.
5. Put on a carving of bolts of fastening of the vacuum amplifier the means interfering their unscrewing, then establish the vacuum amplifier on a partition of a motor compartment and fix bolts.
6. Establish the caps closing bolts of fastening of the vacuum amplifier of brakes.
7. Establish on the vacuum amplifier the main brake cylinder and fix nuts, having tightened them the demanded moment.
8. Connect a vacuum tube to the vacuum amplifier of brakes.
9. Establish a broad tank.
10. Establish the engine from draft стеклоочис titel, then establish a fairing in the windscreen basis.
11. Further installation is made in sequence, return to removal. Check operation of the vacuum amplifier of brakes.