GF25.20-P-5101-03A Hydraulic Clutch Release Mechanism: Operation

Hydraulic clutch release mechanism: operation





Operation
The pressure plunger (13g) is operated hydraulically and pushed forward on the sleeve (13h). The thrust ring (13b) pushes against the disk spring of the clutch and actuates it.

The internal seal is provided by a collar seal (13f).

The boot (13d) is designed to protect the running surface of the central clutch operator from dirt. The pretension spring (13e) ensures, when the clutch is not operated, that the thrust bearing is subjected always only to a minimal load in order to avoid bearing noises.





Function with clutch open
The automated manual transmission control module (N15/6) actuates the automated manual transmission clutch solenoid valve (Y90) in the valve block (B).

The solenoid valve directs the hydraulic pressure (p) into pressure chamber I of the hydraulic central clutch operator (A). The pressure piston (A2) is pushed forward toward the disk spring. The thrust ring pushes against the disk spring of the clutch and opens it.





Function with clutch closed
The automated manual transmission clutch solenoid valve (Y90) in the valve block (B) is not energized. The return spring holds the solenoid valve in the basic position.

Consequently, pressure chamber I in the hydraulic central clutch operator (A) is pressureless and a link exists to the oil outlet in the oil reservoir (O).