VW Sharan repair

. Diesel engines: 1,9 l of TDI.
+ 1. Introduction
+ 2. VR6 engine
+ 3. Two-liter engine (ADY)
+ 4. System of greasing of the engine
+ 5. Cooling system
+ 6. System of injection of fuel of the VR6 engine
+ 7. Simos system of injection of fuel of the 2,0-liter engine
+ 8. Ignition system
+ 9. Coupling
+ 10. Mechanical 5-step transmission
+ 11. Shaft of a drive of wheels
+ 12. Hydraulic booster of a steering
+ 13. Forward suspension bracket
+ 14. Back suspension bracket
- 15. Brake system
   + 15.1. Adjustment of brake system
   + 15.2. Disk brakes of forward wheels
   - 15.3. Brakes of back wheels
      15.3.1. Check of thickness of overlays of brake shoes
      15.3.2. Replacement of brake shoes
      15.3.3. Dismantling and assembly of the brake mechanism of a back wheel
   15.4. Processing of brake disks
   + 15.5. Main brake cylinder
   15.6. Check of the vacuum amplifier of a brake drive
   15.7. Pumping of brakes
   + 15.8. Parking brake
   + 15.9. ABS system (anti-blocking brake system)
+ 16. Electric equipment
+ 17. Diesel engine
+ 18. System of greasing of the diesel engine
+ 19. System of cooling of the diesel engine
+ 20. Power supply system of the diesel engine and turbokompressor
+ maintenance Card
+ Specifications and characteristics
+ Elektroskhema




Repair Sharan/Sharan Volkswagen>> Brake system>> Brakes of back wheels>> Replacement of brake shoes
Note
If it is planned to establish old brake shoes, before their removal mark with paint (a marker, a core) a relative positioning of brake shoes in relation to supports that at installation not to mix internal and external brake shoes, and also a wheel on which they were established.

Removal of brake shoes of back wheels carry out in the following order:
- slightly release bolts of fastening of back wheels;
- mark with paint (marker) a relative positioning of wheels, brake disks and naves of wheels;
- lift a back part of the car, put it on a support, unscrew bolts of fastening and remove back wheels;
- remove the car from the parking brake. Disconnect a cable of the parking brake from a brake support;

Fig. 322. The locations of bolts of fastening of a support are shown by shooters





- turn out the top and bottom bolts of fastening (fig. 322) of a brake support a face six-sided key, holding thus from a provorachivaniye with a thin rozhkovy key directing finger for its six-sided part;
- remove a support, having moved it up and back, and tie up a wire to a spring of a back suspension bracket. A brake hose do not disconnect, do not overwind and leave in the tense condition;
- remove brake shoes, previously having put on them labels (if they are used again).

Prevention
It is forbidden to press a brake pedal as it will lead to piston loss from the brake cylinder, to an effluence of brake liquid and system depressurization at the removed brake shoes.

Check of a technical condition of the brake mechanism carry out before installation of back brake shoes in the following order:
- clear all details and attentively check their condition;
- check a condition of a surface of the piston and the cylinder. At their wear, damage or a strong korrodirovaniye replace the cylinder and the piston. From the cylinder case corrosion remove with a wire brush;
- carefully clear directing surfaces and installation sites of blocks in an aperture of the case a soft metal brush and wipe the rags moistened in alcohol (gasoline it is impossible to use). Do not use thus maslosoderzhashchy solutions or sharp tools;

Prevention
All works on cleaning of brake mechanisms carry out in means of protection of respiratory organs — respirators as the dust from the brake shoes, being allocated as a result of functioning of brake mechanisms, is unhealthy.

- check protective caps of directing fingers. The hardened and torn protective caps replace;
- remove from working surfaces of brake disks oil and dirt. On working surfaces teases are not allowed, the buckling, deep risks and other damages from which wear of slips increases or decreases efficiency of braking. Polishing or a disk pro-point at the same time from two parties is allowed, but thus both parties should be processed on identical depth, and the thickness of a back brake disk should not be less admissible;

Prevention
Brake disks with a korrodirovanny brake surface are subject to replacement.

- measure real thickness of back brake disks and overlays of brake shoes. Brake disks with a dark blue or gray raid before installation of new blocks clear;
- check, whether there are no cracks on a dustproof cap of the piston of the brake cylinder. The damaged dustproof cap replace, as the getting dust quickly will lead to leakage of brake liquid.
Installation of brake shoes of back wheels
On the modern Volkswagen models pistons of the brake cylinder are upgraded and now for return of the being self-unscrewed piston (because of operation of the adjusting mechanism) in the brake cylinder it is necessary to have a special key of VW3272. In the piston there are two grooves, located opposite to each other in which the special key is established. If such key is not present, instead of it it is possible to use a steel strip in the width equal to diameter of the piston and thickness, equal thickness of grooves for screwing up.

Prevention
Unlike forward brakes to press pistons into brake cylinders by means of a clamp or the handle of a hammer it is impossible, as thus it is possible to damage the adjusting mechanism (the mechanism of an eyeliner of brake shoes).

Installation - brake shoes carry out in the following order:

Fig. 323. A reversing and a piston vvorachivaniye in the brake cylinder a special key of VW3272. In a place shown by an arrow A, it is possible to put on and a wrench «13 mm»





- by means of a special key of VW3272 (fig. 323) screw the piston in the brake cylinder clockwise.

Note
Before a vvertyvaniye of the piston pump out from a tank a siphon pear a part of liquid not to allow its vypleskivaniye from a tank.

Prevention
Brake liquid is poisonous, destroys a paint and varnish covering and accelerates processes of corrosion of metals! At all do not pump out brake liquid a mouth through a hose, and use for this purpose a siphon pear. Brake liquid merge in a bottle which should be used only for brake liquid.

- establish brake shoes. Probably, thus it is necessary to screw the piston on big size;

Note
Before support installation into position, check correctness of installation of brake shoes.

- establish a support on a brake disk, into position, fix it new being self-stopped bolts and wrap them the moment of an inhaling of 35 N · m. If new bolts are attached to a repair kit of Volkswagen, use them;
- connect a cable of the parking brake to a brake support and adjust the parking brake (see item 15.1.2);
- several times strongly press a brake pedal, yet will not feel strong counteraction. Thus brake shoes will occupy the working situation and will provide a good prileganiye to a brake disk;
- pump over brake system if it is necessary;
- establish and temporarily fix (by hand) bolts of fastening of wheels;
- lower the car and tighten bolts of fastening of wheels cross-wise;
- check connections on tightness. Podtekaniye of liquid is not allowed;
- check level of brake liquid in a compensatory tank and restore it to demanded level;
- check tightness of brake system on the working engine. For what press several times a pedal of a brake and hold it within several seconds. The pedal thus should not просаживаться.