VW Passat repair


+ 1. Ekspluatatsiiya of the car
+ 2. Maintenance
+ 3. Engines
+ 4. Cooling system
+ 5. Power supply system
+ 6. Ignition system
+ 7. Coupling
+ 8. Transmission
+ 9. Drive of forward wheels
+ 10. Suspension brackets
+ 11. Steering
- 12. Brake system
   12.1. Technical characteristics
   12.2. General information
   + 12.3. Maintenance
   + 12.4. Replacement of forward brake shoes
   12.5. Replacement of a forward support
   12.6. Replacement of a forward brake disk
   12.7. Replacement of a brake drum and back brake shoes on brakes of drum-type type
   12.8. Wheel cylinder of the back brake mechanism
   12.9. Replacement of brake shoes on back disk brakes
   12.10. Replacement of a support of the back brake mechanism
   12.11. Pressure regulator
   12.12. Main brake cylinder
   12.13. Tubes and hoses of brake system
   12.14. Air removal from a hydraulic actuator of brake system
   + 12.15. Anti-blocking system of brakes (ABS)
   12.16. Brake pedal
   12.17. Lever of the parking brake
   12.18. Cables of the parking brake
   12.19. Adjustment of the parking brake
   12.20. Vacuum amplifier of brakes
   12.21. Stoplight switch
   12.22. Elimination of noise of brakes
+ 13. Wheels and tires
+ 14. Systems of heating, ventilation and conditioning
+ 15. Electric equipment
+ 16. Body
+ 17. Electric circuits


Repair B3-B4/Passat B3-B4 Volkswagen Passat>> Brake system>> Vacuum amplifier of brakes
Check of the vacuum amplifier
Press a pedal of a brake of 5-6 times at the idle engine to create in cavities of the vacuum amplifier the identical pressure close to the atmospheric.
By effort enclosed to a pedal determine, whether there is no jamming of the case of the valve.
Having stopped a brake pedal in the middle of its course, start up the engine. At the serviceable vacuum amplifier the brake pedal after start-up of the engine should leave forward. If it did not occur, check fastening of a tip of a hose, a condition and fastening of a flange of a tip in the amplifier, and also a condition of a hose and unions.
Check a condition of the unidirectional valve on wear and damages. If necessary replace. The valve can be checked, blowing it air in both directions. Thus the valve should pass freely air from the vacuum amplifier of brakes to a vacuum hose.

Removal of the vacuum amplifier
Removal make in the following order:
— remove the main brake cylinder;
— in car salon from the driver remove the bottom furnish of the dashboard;
— remove a lock ring and take a pin from a pusher of a pedal of a brake;
— disconnect a vacuum hose together with the unilateral vacuum valve from the vacuum amplifier of brakes;
— unscrew nuts of fastening of the hydraulic block;
— take the vacuum amplifier of brakes from a motor compartment;
— remove rubber ring consolidation and in case of need replace it.

Installation of the vacuum amplifier
Installation of the amplifier carry out to sequences, to return to removal, previously having put on a pin with a head and an opening under шплинт a drop of universal lubricant.