Audi 80/Avant (B4)

Since 1991-1995 of release

Repair and car operation


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

Check of a free wheeling of the lever of a lay brake

 PERFORMANCE ORDER

  1. Action of a lay brake should begin with the third lock groove of the lever.
  2. At the fixed fourth tooth back wheels should be blocked.
  3. On models with disk brake mechanisms on back wheels the free wheeling directly depends on functioning of the automatic adjusting device.
  4. In general: if the course of the lever is longer usual, it specifies on worn out brake Pads on back wheels or the extended cables of a brake drive. This certificate of that the lay brake was strongly tightened at each parking.
  5. Adjustment of a lay brake usually happens is necessary only after replacement of a cable of a brake drive or колодок disk brake mechanisms of back wheels.

Replacement of a cable of a brake drive

 PERFORMANCE ORDER

  1. To raise the car behind and to fix.
  2. To remove the car from a lay brake.
  3. To weaken an adjusting nut on коромысле until a cable it is not becomes appreciable sagged.
  4. To remove a brake drum, to remove brake Pads and to take out the back end of a cable from the lever of inclusion of system of a lay drive.
  5. If on your car on back wheels there are disk brake mechanisms, it is necessary to hook spring скобу on the end of a cover of a cable and to take out a tip of a cable of a brake drive from the drive lever.
  6. To hang out and remove a cable of a drive from various крепежей on a back axis and on the car bottom.
  7. At assemblage to establish a clamp on the forward end of a cover тросового a drive.
  8. Навешивание a cable of a lay brake on приводном the lever of the drum-type brake mechanism can be connected with problems. Therefore it is necessary to remove a spiral spring on a cable kusachkami-bokorezami and to prevent its slipping, softly having clamped бокорезы on a cable. Now to hang a cable in the lever.
  9. At models with disk brake mechanisms on back wheels it is necessary to spend adjustment!
  10. At all cars it is necessary to adjust system of a lay brake.

Regulation of system of a lay brake

At the left: regulation of a lay brake. By rotation of an adjusting nut (1) on a carving site (2) cables of a brake drive are made a tension of cables of a brake drive to wheels. The illustration shows about the middle of the bottom of the car.

On the right: the lay brake is adjusted correctly if приводной the lever of a brake (2) slightly rises from an emphasis (1).

Thanks to the automatic adjusting devices which are available for models both with drum-type, and with disk brake mechanisms on back wheels, the system of a lay brake needs to be regulated only after works on mechanics of system of a lay brake or after replacement brake колодок.

 PERFORMANCE ORDER

  1. To raise the car behind from both parties and to fix.
  2. Models with back drum-type brake mechanisms: to remove the car from a lay brake.
  3. To turn out an adjusting nut till the end of a carving bar.
  4. Once strongly to press a brake pedal.
  5. To lift the lever of a lay brake on two lock grooves (two clicks).
  6. To tighten an adjusting nut so strongly that both wheels could be turned a hand with great difficulty.
  7. To remove the car from a lay brake and to check up a free wheeling of wheels.
  8. Models with back disk brake mechanisms: to spend adjustment.
  9. To tighten an adjusting nut so strongly that both drivers the lever of a lay brake at supports of brake mechanisms on the right and at the left have slightly risen from an emphasis. The assistant should check it.
  10. Now to weaken an adjusting nut on two turns.
  11. For the control to press the lever of inclusion of system of a lay brake to supports of brake mechanisms on the right and at the left by turns to corresponding emphasis. If the lever of a support of other wheel as moves, means, cables of a brake drive are tense too strongly.
  12. In this case to weaken an adjusting nut of cables of a brake drive so that both levers were near an emphasis.
  13. To tighten and again to weaken a lay brake; to check up a free wheeling of back wheels.

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