A clutch lever shaft like the Crown lever shaft is the internal structure that controls the clutch. It should not be confused with the external gear shift lever on the center of the car cockpit. The clutch lever shaft is the component that gives mechanical advantage in pushing the clutch plate onto the flywheel. Like a simple lever, the clutch lever shaft multiples the input force several times. Force multiplication or mechanical advantage is necessary to securely couple the clutch with the rotating flywheel. The clutch lever shaft has at least two pivots the central pivot act as the fulcrum. The retractable clutch is the load or resistance that the clutch lever shaft must overcome. Like a simple lever, the clutch lever shaft mechanical advantage depends on the position of the fulcrum in relation to the resistance and force.
Clutch lever shafts can be found both in hydraulically-operated clutch mechanism and mechanically-operated clutch. Most automobile utilize hydraulics in controlling the clutch. In a hydraulically-operated clutch, the clutch lever shaft is directly controlled by the slave cylinder pistons to push the clutch. When you step on clutch pedal of your vehicle, pressure is sent to the hydraulic oil reservoir by the pistons attached to the pedal. A second cylinder-piston mechanism is triggered. The second piston pushes hydraulic fluid through the hydraulic transmission hose. The force exerted by your leg muscle is thus multiplied several times though the pressure relay.
The main hydraulic cylinder with reservoir is called the master cylinder. Pressure force originates from the master cylinder. Pressure steadily builds up as the hydraulic fluid enters the slave cylinders. In the process, the initial input force is multiplied several times. The force is further increased by the clutch lever shaft. The clutch lever shaft then pushes the clutch against the rotating flywheel. Parts Train offers reliable aftermarket clutch lever shafts at very reasonable price.
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