W203 since 2000 of release
Repair and car operation
+ Mercedes-Benz Cars of a class C (W-203)
+ Operation manual
+ Routine maintenance
+ cooling and heating Systems
+ Power supply system and release
+ engine Electric equipment
+ Manual transmission
+ Automatic transmission
- Coupling and power shafts
Removal, installation and coupling check
Air removal from a coupling drive. Replacement of hydraulic liquid
+ Power shafts of wheels
+ Brake system
+ Suspension bracket and steering
+ Onboard electric equipment
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General informationFlywheel, 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 centered 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 has a hydraulic drive of coupling. Working liquid on models from RKPP is brake liquid which arrives from the general tank of brake liquid. On models with automated by a check point the hydraulic contour of coupling is a part of hydrosystem of a drive of management of a transmission.
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 plug-and-play.
Engines are 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.