Audi 80/Avant
+ The description
+ Engines
+ System of release of the fulfilled gases
+ Cooling system
+ Fuel tank and the fuel pump
+ The air filter and воздухозаборные channels
+ Injection system
+ Coupling
+ Transmission and transmission
+ Suspension bracket and steering
- Brake system
Check of brake mechanisms
Brake liquid
Check of level of a brake liquid
Check of tightness of brake system
Replacement of a brake liquid
Disk brake mechanisms
Measurement of a thickness колодок the disk mechanism
The control of a condition of brake disks
Replacement колодок disk brake mechanisms
The drum-type brake mechanism
Measurement brake колодок the drum-type mechanism
Check of a course of a pedal of a brake
The disk brake mechanism of back wheels
Measurement of a thickness колодок back disk brakes
Check of a free wheeling of the lever of a lay brake
The main brake cylinder
The amplifier of brakes
Check of the amplifier of brakes
Regulator of brake forces
Repair of a hydraulic drive of brakes
Prorolling of brake system
The list of malfunctions
+ Antiblocking system of brakes
+ Wheels and tyres
+ Kuzovnaja electrosystem
+ Ignition system
+ Illumination
+ Signalling devices
+ Devices and auxiliary devices
+ Heating and ventilation
+ Body elements
+ Search of malfunctions
+ Specifications
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Check of the amplifier of brakes
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The engine should be muffled.
To press a pedal of a brake of 10 times.
To hold a brake pedal now completely squeezed out and to get the engine.
At the serviceable amplifier of a brake drive the pedal should move a little during this moment. If it does not occur, means, strengthening of a brake drive is faulty.
Most likely it is necessary to search for malfunction in vacuum system: not tight vacuum hose from an inlet collector to the amplifier of brakes, faulty the return valve in a vacuum hose near the amplifier, a rubber ring between the main brake cylinder and the amplifier or an amplifier membrane.
For the control of the return valve to disconnect a vacuum hose from the amplifier of brakes.
The purge, but not всасывание should be possible.
The return valve can be got only together with a corresponding vacuum hose.
For replacement of the damaged rubber ring between the main brake cylinder and the amplifier it is necessary to dismantle the cylinder.
The faulty amplifier of brakes is not subject to repair. To replace.
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Removal of the amplifier of a brake drive
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To remove the main brake cylinder.
To remove a vacuum hose.
To remove a shelf at the left under the instrument panel (has undressed Salon).
To remove шарнирный a finger in a head of a plug of draught of management of the amplifier of brakes.
To turn out самоконтрящиеся nuts, fastenings of the amplifier of brakes in car salon.
Then to remove both nuts of fastening of the amplifier of brakes in a motor compartment.
To remove the amplifier of brakes through a motor compartment.
If the new amplifier is established, it is necessary to adjust length of its draught of management the removed condition:
The distance between the middle of an aperture of a head of a plug and a basic surface with four hairpins should make 271 mm (the admission of 0,5 mm).
After adjustment thoroughly to tighten a counternut.
Before installation to grease шарнирный a bolt консистентной with greasing.
To use only a new clamp for шарнирного a finger and new самоконтрящиеся nuts. To establish a new sealing ring between the amplifier of a brake drive and the main brake cylinder.
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