Audi A3

since 1997 of release

Repair and car operation

Audi A3
+ Maintenance instruction
+ Current leaving and service
+ Engine
+ Systems of cooling, heating
+ the Power supply system and production of the fulfilled gases
+ engine Electric equipment
+ Manual box of gear shifting
+ Automatic transmission and models with a full drive
+ Coupling and power shafts
- Brake system
   Replacement of forward brake shoes
   Removal and installation of disk brake mechanisms of back wheels
   Check of thickness of a brake disk
   Removal and installation of a brake disk/support
   Adjustment of the parking brake
   Brake liquid
   Air removal from brake system
   Removal and installation of a brake hose
   Check of the amplifier of a brake
   Removal, installation and adjustment of the switch of a stoplight
   Removal and installation of the lever and cable of the parking brake
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment
+ Elektroskhema


Check of thickness of a brake disk


1. Mark paint the provision of wheels concerning a nave. It will allow to establish at assembly an otbalansirovanny wheel in its former situation. Weaken bolts of fastening of a wheel on the car standing on the earth. Lift the car and establish it on supports. Remove wheels.
2. It is necessary to measure thickness of a brake disk always in the thinnest place. HUNDRED apply for this purpose a special calliper or a micrometric bracket as as a result of wear of a brake disk the fillet is formed. It is possible to measure thickness of a brake disk by means of a usual calliper. For this purpose on each party of a disk it is necessary to enclose the corresponding thickness a lining (for example, a coin). Then it is necessary to subtract thickness of linings from the value received as a result of measurement.


It is necessary to measure thickness of a disk in several points.

3. The sizes of brake disks are specified in Specifications.
4. At achievement of a limit of wear it is necessary to replace a disk.
5. In the presence of big cracks or задиров a disk it is necessary to replace more than 0.5 mm with depth.
6. Establish wheels so that the markings put at removal of wheels coincided. Wrap bolts of fastening of wheels. Lower the car on wheels. Tighten fastening bolts cross-wise the moment of 120 N • m. To grease bolts of fastening of wheels does not follow.