The clutch master cylinder refers to the part that is connected to the clutch pedal and is connected to the clutch booster through the oil pipe. When the driver steps on the clutch pedal, the push rod pushes the piston of the master cylinder to increase the oil pressure, and enters the wheel pump through the hose, forcing the wheel pump rod to push the release fork and push the release bearing forward; when the driver releases the clutch pedal, The hydraulic pressure is released, the release fork gradually returns to its original position under the action of the return spring, and the clutch is in the engaged state again. There is a radial oblong through hole in the middle of the piston of the clutch master cylinder. The direction limiting screw passes through the oblong hole of the piston to prevent the piston from rotating. The oil inlet valve is installed in the axial hole at the left end of the piston, and the oil inlet valve seat is inserted through the straight hole on the piston surface. in the piston bore. For more information, please continue to pay attention to our brake valve factory. https://www.jdautoparts.net/