Audi A4, S4

Since 2000 of release

Repair and car operation

Audi A4, S4
+ Introduction
+ Controls and receptions of safe operation
+ Current leaving and service
+ The engine
+ Systems of cooling, heating and the air conditioner
+ Power supply systems, release and decrease in toxicity of the fulfilled gases
+ Systems of an electric equipment of the engine
+ Manual box of a gear change
+ Automatic transmission
+ Coupling, power shafts and differential
- Brake system
   Removal of air from brake system
   Removal and installation of lobbies brake колодок
   Removal and installation колодок brake mechanisms of back wheels
   Check of a thickness of a brake disk
   Removal and installation of a brake disk/support
   Adjustment of a lay brake
   Removal and installation of the switch of a stoplight
   Removal and installation of a brake hose
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment

Check of a thickness of a brake disk


  1. Mark with an arrow a direction of rotation of a wheel. Turn away bolts of fastening of wheels. Lift and establish the car on supports.
  1. Measure a thickness of a brake disk necessarily in the most thin place (an arrow on an accompanying illustration). On HUNDRED for this purpose there is a special calliper or micrometric скоба since deterioration of a disk has an edge. It is possible to measure a thickness of a disk by means of a usual calliper. In this case on each party of a brake disk it is necessary to put a lining of a certain thickness (for example, a small coin). In this case it is necessary to subtract a thickness of two coins From the received result of measurement.

It is necessary to make measurement in several points of a brake disk.

  1. The sizes of a brake disk are resulted in Specifications.
  1. If a limit of deterioration of a disk will reach, it is necessary to replace necessarily both disks of one axis.
  1. In the presence of the big cracks or flutes, more a brake disk it is necessary to replace than 0.5 mm with depth.
  1. Observing a rotation direction, establish a wheel and fix it. Lower the car on wheels and only after that tighten bolts of fastening of a wheel cross-wise the moment 120Нм.