When a driver wants to change gears, a manual gearbox system will disengage the clutch using a type of bearing called a hydraulic throwout bearing. When the clutch pedal is depressed, the throwout bearing, which is attached to it, engages. The throwout bearings returns to its initial position after the pedal is removed, reengaging the clutch and permitting regular operation of the transmission.
A little amount of hydraulic fluid is used to actuate a piston that moves the bearing in the hydraulic throwout bearing. The fluid is driven via a narrow path when the clutch pedal is depressed, moving the piston and engaging the throwout bearing. As a result, the driver can effortlessly and smoothly change ratios without having to manually disengage the clutch.