No, the gearbox includes the gears; the clutch is a independent element that connects the engine on the transmission. The manual valve is just what the change lever hooks around. Dependant upon which gear is selected, the manual valve feeds hydraulic circuits that inhibit selected gears. For instance, In case https://judahxddcz.59bloggers.com/34593279/the-smart-trick-of-gearbox-auto-that-nobody-is-discussing