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







10:18. Vacuum amplifier

GENERAL INFORMATION

MODELS WITH RIGHT-HAND MANAGEMENT

Cap of a fixing bolt of a servoamplifier

The cap of a fixing bolt of a servoamplifier is removed for receiving access to a bolt.

Check

PERFORMANCE ORDER
Squeeze out a brake pedal several times and start the engine. The pedal has to fall a little. Let's the engine work several minutes and muffle it. Press a brake pedal. You have to hear hissing of the vacuum amplifier. After several pressing it has to stop, and the pedal to become much more rigid.

Removal

PERFORMANCE ORDER
1. Disconnect a wire of the minus plug of the accumulator.
2. Remove the lower panel of finishing on the party of the driver.
3. Disconnect the connection socket from the switch of fires of a stoplight and remove it.
4. Remove a rotary pin of a pedal of a brake.
5. Remove the finishing panel before a windshield and remove the engine of screen wipers and the connecting mechanism.
6. Remove a tank of the washing liquid.
7. Disconnect a vacuum tube from a servoamplifier.
8. Turn off two fixing nuts and remove the main brake cylinder from the vacuum amplifier.
9. Remove caps from fixing bolts of a servoamplifier.
10. Turn off fixing bolts of a servoamplifier and remove it together with an arm.
11. Turn off four fixing nuts and remove an arm.

Installation

PERFORMANCE ORDER
1. Measure distance from the servoamplifier case to the center of an opening for a rotary pin on the end of a fork of a servoamplifier. It has to be 147,7 mm.
2. If adjustment is necessary, weaken a lock-nut, turn a fork for obtaining the required length and tighten a lock-nut.
3. Grease a surface of a fixing arm with sealant (Opel P/N 90485251 or similar) and establish a servoamplifier on an arm.
4. Grease a carving of fixing bolts of a servoamplifier with glue for threaded connections, then establish a servoamplifier on a back wall of a motive compartment and tighten fixing bolts.
5. Establish caps of fixing bolts.
6. Install the main brake cylinder on a servoamplifier and tighten fixing nuts till the required inhaling moment.
7. Connect a vacuum tube to a servoamplifier.
8. Install a tank of the washing liquid.
9. Install the engine of screen wipers and the connecting mechanism. Install the finishing panel.
10. Further installation is carried out upside-down removals.

MODELS WITH LEFT-SIDE MANAGEMENT

Check

Removal of a servoamplifier of models with left-side management

The servoamplifier and fixing arm are removed, shooters showed an arrangement of fixing nuts.

PERFORMANCE ORDER
Squeeze out a brake pedal several times and start the engine. The pedal has to fall a little. Let's the engine work several minutes and muffle it. Press a brake pedal. You have to hear hissing of the vacuum amplifier. After several pressing it has to stop, and the pedal to become much more rigid.

Removal

PERFORMANCE ORDER
1. Disconnect a wire of the minus plug of the accumulator.
2. Remove the lower panel of finishing on the party of the driver.
3. Disconnect the connection socket from the switch of fires of a stoplight and remove it.
4. Remove a rotary pin of a pedal of a brake.
5. Disconnect a vacuum tube from a servoamplifier.
6. Turn off two fixing nuts and remove the main brake cylinder from the vacuum amplifier.
7. Turn off four fixing nuts of an arm of a servoamplifier and remove a servoamplifier together with an arm.
8. For removal of a fixing arm turn off four fixing nuts.
9. For removal of a fork of a servoamplifier remove a fixing clip.

Installation

Measurement of distance from the servoamplifier case to the center


1 – servoamplifier fork length

PERFORMANCE ORDER
1. Measure distance from the servoamplifier case to the center of an opening for a rotary pin on the end of a fork of a servoamplifier. It has to be 255,5 mm.
2. If adjustment is necessary, weaken a lock-nut, turn a fork for obtaining the required length and tighten a lock-nut.
3. If it is necessary, install the rubber plug and establish a servoamplifier on a fixing arm. Tighten fixing nuts till the required inhaling moment.
4. Establish an arm on a back wall of a motive compartment and tighten fixing nuts till the required inhaling moment.
5. Install the main brake cylinder on a servoamplifier and tighten fixing nuts till the required inhaling moment.
6. Connect a vacuum tube to a servoamplifier.
7. Further installation is carried out upside-down removals.