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>> Replacement of a support of the back brake mechanism
Removal of a support carry out in the following order:
block forward wheels, will hang out and fix on basic racks a back part of the car;
remove the corresponding back wheel and release the parking brake;
establish a clip on a flexible hose at a support;
weaken a nut of fastening of a brake hose, but do not unscrew it at this stage;
remove brake shoes;
disconnect a support from a brake hose. Muffle a stopper of suitable diameter the hose end;
if necessary unscrew the holder of a support from a back axis.
Dismantling of a support carry out in the following order:
wipe a support from dirt and a dust;
establish a support an overlay of the piston up;
by means of the lever remove a dustproof cap of the piston;

Fig. 12.14. VW 3131 tool use for piston installation in a support

take the piston from the cylinder, using the VW 3131 tool (see fig. 12.14 );
by means of a screw-driver take a sealing ring of the piston from the support cylinder;
take a dustproof cover from the piston;
unscrew the pumping valve;
clear all details of a support alcohol or pure brake liquid and wipe them. Examine pistons and a support on wear and other damages.
Assembly of a support carry out in the following order:
put on the cylinder of a support and a cuff pure brake liquid;
establish a cuff in a cylinder flute;

Fig. 12.16. Installation of a dustproof cover in a support flute

establish a dustproof cap on the smooth end of the piston, then press the piston into a support. A screw-driver insert a dustproof cover into a support flute (fig. 12.16) ;

Fig. 12.17. Support of the back brake mechanism: 1–a directing finger; 2–protective cover; 3–holder of a support; 4–dustproof cover; 5–piston; 6–cuff; 7–support; 8–самоконтрящиеся bolts; 9–pumping valve; 10-cap

establish the piston 5 (fig. 12.17) in an opening and fix it. The dustproof cap is fixed in a flute on the external end of the piston;
for adjustment of a regulator of pressure the special equipment therefore its performance charge to specialists of specialized service station is required;
the regulator of pressure of brakes works together with self-leveling system of a back suspension bracket. The air pipe connects alignment system to a pressure regulator and if the regulator of pressure or the compressor in system of alignment has to be disconnected or act in film, it is necessary to let out the compressed air from system;
put a small amount of paste on a carving of the brake cylinder, then screw up the pumping valve in a support;
establish a new cap on the pumping valve.

Fig. 12.18. Back disk brake mechanism: 1–pipeline; 2–bolt; 3–ABS sensor; 4– arm; 5–a directing finger; 6–bolts of fastening of a support; 7–protective cover; 8–bolt; 9–support; 10-brake shoes; 11-holder of a support; 12-sealing ring; 13-sealing ring; 14-internal bearing; 15-external bearing; 16-nut; 17-шплинт; 18-cap; 19-blocking ring; 20-persistent washer; 21-bolt; 22-brake disk; 23- ABS sensor rotor; 24-bolt; 25-protective plate; 26-pin; 27-cable of the parking brake; 28-spring clip

Installation of a support carry out to sequences, return to removal. After that remove air from brake system. For this purpose it is enough to remove air from a support 9 (fig. 12.18) which acted in film. Strongly press a brake pedal to adjust back brakes.