VOLKSWAGEN GOLF IV

since 1997 of release

Repair and car operation



Foltsvagen Golf 4
+ 1. Maintenance instruction
+ 2. Engine
+ 3. Cooling system
+ 4. Fuel system
+ 5. Exhaust system
+ 6. Ventilation and heating system
+ 7. Coupling
+ 8. Transmission
+ 9. Suspension brackets and power shafts
+ 10. Steering
+ 11. Wheels and tires
- 12. Brake system
   12.1. Technical characteristics
   + 12.2. ABS/EBV/EDS/ASR/MSR
   + 12.3. Replacement of forward brake shoes on FS-III support
   + 12.4. Replacement of brake shoes on FN-3 support
   + 12.5. Replacement of back brake shoes on disk brakes
   + 12.6. Brake disk
   12.7. Adjustment of the hand brake
   + 12.8. Replacement of back brake shoes on drum-type brakes
   12.9. Removal and installation of the back working brake cylinder
   - 12.10. Pumping of hydraulic brake system
      12.10.1. Pumping – the main method (two persons)
      12.10.2. Pumping – set use with the unidirectional valve
      12.10.3. Pumping – use of a set of pumping under pressure
      12.10.4. All methods
   12.11. Brake pipelines and hoses
   12.12. Check of the vacuum amplifier of brakes
   12.13. Removal, installation and adjustment of the switch of a stoplight
   12.14. Removal and installation of cables of the hand brake
   12.15. Main malfunctions of brakes
+ 13. Body
+ 14. Electric equipment and electroschemes






12.10. 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 large amount 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 large amount of water. Also this liquid is hygroscopic, i.e. absorbs moisture from air therefore the liquid, being stored in open ware, it is not recommended to use a long time.


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.