Audi A4, S4
since 2000 release
Repair and operation of the car
Audi A4, S4
+ Governing bodies and methods of safe operation
+ Current leaving and service
+ Cooling systems, heating and air conditioner
+ Power supply systems, release and decrease in toxicity of the fulfilled gases
+ Systems of electric equipment of the engine
+ Manual box of gear shifting
+ Automatic transmission
- Coupling, power shafts and differential
+ Power shafts of wheels
- Models with the full drive of wheels
+ Brake system
+ Suspension bracket and steering
+ Onboard electric equipment
Models with the full drive of wheels
The AUDI A4 quattro car has the constant full drive. Are in addition applied to the drive of back wheels: driveshaft, differential of a back axis, two power shafts of back wheels, and also interaxal differential of Torsen.
The driveshaft transfers a torque from a check point of a forward axis to differential of a back axis. From differential of a back axis two power shafts transfer the movement to back wheels. For compensation of various turns of wheels and distribution of a torque between forward and back axes, depending on traffic conditions, on models with the full drive the self-locking interaxal differential of Torsen which can transfer a variable torque on lobbies and back wheels is in addition established.
Features of towage
Models with the full drive can be towed with the lifted lobbies or back wheels.
Thus, however, the car cannot be towed on distance more than 50 km and the speed of towage should not exceed 50 km/h. The car has to be towed on the special conveyor.