Audi A4, S4
since 2000 of release
Repair and car operation
Audi A4, S4
+ Governing bodies and receptions of safe operation
+ Current leaving and service
+ Systems of cooling, 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
Removal, installation and coupling check
Removal and bearing installation
Air removal from hydrosystem of a drive of coupling
+ Power shafts of wheels
+ Models with a full drive of wheels
+ Brake system
+ Suspension bracket and steering
+ Onboard electric equipment
Flywheel, basket and coupling disk
On considered models one-disk dry coupling with a diafragmenny spring is established.
Coupling consists of a basket with the press disk, a conducted disk, the bearing of switching off of coupling and a hydraulic drive.
The basket of coupling is connected by bolts to a flywheel which is in turn fixed on cranked to an engine shaft. Between a press disk and a flywheel there is a conducted disk of coupling which nestles on a flywheel a press disk. The conducted disk of coupling is connected through shlitsevy connection with primary shaft of a transmission.
By pressing of a pedal of coupling with the help of a hydraulic actuator the bearing of switching off of coupling presses a spring of a press disk. Press the disk and a conducted disk thus unloads does not nestle any more on a flywheel. Power communication between the engine and transmission interrupts.
Coupling of all models with RKPP has a hydraulic drive. Working liquid is brake liquid which arrives from the general tank of brake liquid.
At each inclusion and coupling switching off owing to a friction there is a wear of frictional overlays of a conducted disk. The conducted disk is a wearing-out element of coupling. Its average service life makes over 100 000 km. Speed of wear depends on loading (movement with the trailer) and management style the car. Coupling does not demand service, since it being self-established.
The majority of engines is equipped with a two-mass flywheel. Such flywheel has spring демпфирующую the system, allowing to extinguish the krutilny fluctuations arising at operation of the engine. Besides, the noise level on low turns thus decreases. The coupling disk at such flywheel consists of a nave, a conducted payment and frictional slips. Springs are not established to Dempfiruyushchiye.