The clutch pressure plate is an essential part of the clutch system which is located near the clutch disc. It consists of a metal disc which has springs and fingers. Its job is to push the clutch disc against the flywheel of an engine. This clutch disc spins at the same speed as the flywheel and has an abrasive surface that allows it to create friction with the flywheel. The friction generates engine torque which drives the vehicle’s wheels. 

When the foot pedal is depressed, the fingers compress the springs and pulls the clutch pressure plate and the clutch disc away from the flywheel. This halts the clutch disc and means that the driver can adjust gears. When the foot pedal is released, the springs are no longer compressed and the clutch disc and the clutch pressure plate move back to the flywheel to create friction again. 

If there is an issue with the clutch pressure plate, it is possible that it will not be released fully when the clutch is depressed. This will cause issues with changing gears and drivers will hear a grinding noise as they attempt to change gear.