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



15.4. Pumping of hydraulic brake system

GENERAL INFORMATION

Prevention

The brake liquid used in hydraulic system of brakes is poisonous, therefore at its hit on skin it is necessary to wash out immediately this place a plentiful quantity of water. If liquid got to eyes or in an organism, it is necessary to address immediately to the doctor. Some liquids have property easily to ignite and can light up even from contact to hot knots of the car. Besides, the liquid used in hydraulic system of brakes, dissolves paint and plastic therefore at liquid hit on a paint and varnish covering of the car wash out it a plentiful quantity of water. Also this liquid is hygroscopic, i.e. absorbs moisture from air and therefore the liquid, being stored in open ware, it is not recommended to use a long time.


Removal of a dustproof cap of the union of pumping of a back support of a disk brake on models with ventilated disks

Pumping of hydraulic system of brakes is necessary for removal of air which considerably reduces efficiency of braking. Air can get to hydraulic system owing to system depressurization at repair, replacement of separate knots or brake liquid. To availability of air in a drive points 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.

Never use brake liquid repeatedly.

At performance of operation of pumping of brake system let's to level of brake liquid fall below the tank middle.

If brake liquid left system because of leak in system, find the reason and eliminate leak before further actions.

If the hydraulic system was separated partially, and the corresponding precautions were accepted to prevent further loss of liquid, it is possible to pump over only a part of system.

Pumping can be carried out with the assistant or it is independent, a set of pumping of brake system. Always act according to the instruction. It is recommended to use a set everywhere, where probably as it very much simplifies pumping procedure. If the set for pumping is not present, it is necessary to be reserved by pure capacity and a transparent plastic tube of the corresponding length which should put on densely on the pumping union. Thus the help of other person is required.

Sequence of pumping

If only the partial rassoyedineniye of hydraulic brake system was made and the corresponding precautions were observed, it is enough to pump over only this part of system. If pumping of all hydraulic system of brakes is made, pumping of each contour begin with a forward wheel on models without anti-blocking system. On models with anti-blocking system first of all pump over a forward contour.

Pumping – the main method (two persons)

PERFORMANCE ORDER
1. Remove a dustproof cap 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. Sharply press a pedal of a brake of 3-5 times with an interval of 2-3 seconds, unscrew on a turn floor the pumping union at the pressed pedal. 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.
2. Holding a pedal in the pressed situation, screw up the pumping union against the stop and remove a hose.
3. Wipe the union of pumping and establish a protective cap.
4. Repeat these operations for other wheels.
Prevention

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


5. 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 of brakes on pumping of brakes, removal of air make at the idle engine.

Pumping – set use with the unidirectional valve

The set consists of a tube with the unidirectional valve established on it which excludes possibility of return to brake system of remote brake liquid with air vials. On some sets the transparent container in which air vials in brake liquid are well looked through is established.

PERFORMANCE ORDER
1. Remove a dustproof cap from the union of pumping of the wheel cylinder, clear it and dress on it a hose from a set. Unscrew on a turn half the pumping union. Smoothly press a brake pedal against the stop and slowly release it in a starting position. Repeat this operation until from the union of pumping there will be no brake liquid without air vials.
2. Tighten the pumping union against the stop, remove from it a tube and dress a dustproof cap.
Prevention

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


Pumping – use of a set of pumping under pressure

PERFORMANCE ORDER
1. Use of a set of pumping under pressure demands giving to it the compressed air for what it is possible to use the beefy tire of a spare wheel. Reduce pressure in the tire to the size specified in the maintenance instruction of a set.
Prevention

Opel recommends to use the compressed air submitted under the pressure of no more 2nd bar.


2. Connect the filled brake liquid the container to a popolnitelny tank of the main brake cylinder. Process of pumping begins after unscrewing of the union of pumping on a turn half. After when the effluence of brake liquid with vials of air will stop and only pure brake liquid will follow, screw up the pumping union against the stop.
3. When pumping by this method a large amount of liquid for hydrosystem is necessary to prevent air hit in the main brake cylinder in the course of pumping that often occurs, if liquid level in a tank is not supported.
4. Pumping by pressure is especially effective, when the system is difficult for pumping or when complete pumping of system is spent during usual replacement of brake liquid.

All methods

PERFORMANCE ORDER
1. After completion of process of pumping strongly press a brake pedal, thus it should pass about a half of the course. Wash away all traces of the spilled brake liquid and tighten unions of pumping the demanded moment, then establish on them dustproof caps.
2. Check level of brake liquid in a popolnitelny tank of brake system and, if necessary, add brake liquid.
3. Remote brake liquid should not be used more. Pure brake liquid should be stored in a tight vessel as it is very hygroscopic that lowers temperature of boiling and worsens technical characteristics of brake liquid.