The determine shows the vacuum clutch mechanism. This kind of clutch employs the present vacuum inside the engine manifold to work the clutch. The vacuum clutch is made of a reservoir, non-return valve, vacuum cylinder with piston, and solenoid valve.  This prevents the transmission shaft and clutch plate from tilting https://riverysvxx.blogs100.com/33506824/little-known-facts-about-clutch-kereta