Want this question answered?
The clutch disc is designed to absorb such things as crankshaft vibration, abrupt clutch engagement and driveline shock. Torsional coil springs allow the disc to rotate slightly in relation to the pressure plate while they absorb the torque forces, therefore reducing shock of re-engagement.
The cushion spring plays an important role in an automotive dry-clutch system. It strongly influences the clutch torque transmission from the engine to the driveline through its non-linear load–deflection curve
The cushion spring plays an important role in an automotive dry-clutch system. It strongly influences the clutch torque transmission from the engine to the driveline through its non-linear load–deflection curve
Assuming we are talking about an automotive type clutch, the spring hub in the clutch disc absorbs some of the shock helping to make a smooth transition between shifts.
The pressure plate pushes the clutch disc, sometimes called the clutch plate, against the constantly spinning engine flywheel. The clutch disc, therefore, is either stationary or rotating at the same speed as the flywheel. Friction material, similar to that found on brake pads and brake drums, causes the clutch disc to spin at the same speed as the engine flywheel. It is this friction between clutch disc and flywheel that allows the engine torque to drive the wheels. Pressure plates are, as the name implies, round, metallic devices containing springs and fingers, or levers, and controlled by the release fork connected to the shifter. All of the clutch components are enclosed in the bell housing of the transmission, between the rear of the engine and the front of the gearbox. The purpose of pressure plate fingers are as follows: When the driver steps on the clutch pedal, a number of springs in the pressure plate are compressed by multiple - most often three - fingers. This compression of the spring(s) pulls the pressure plate and the clutch disc away from the flywheel and thus prevents the clutch disc from rotating. When the clutch disc is stationary, the driver can shift into the proper gear and release the clutch pedal. When the pedal is let up, the fingers in the pressure plate release their grip and the spring(s) expand to push the pressure plate into the clutch disc, thereby engaging the flywheel. This release process is often called the "clamp load".
yes you do use a spring plate, due to the fact of the amount of fricion the disc will undertake.
The pressure plate which forces the friction disc against the flywheel by means of spring plates. Pressing the clutch pedal down forces the pressure plate away from the friction disc and power transfer from engine to transmission is broken.
hydraulic single disc clutch
clutch pedal free play decreases
If the disc is installed correctly the clutch will engage and disengage smoothly. In most cases if the disc is installed backwards the clutch disc will bind against the flywheel/crankshaft bolts and not release resulting with a clutch that doesn't disengage. More than likely if the disc was installed backwards the disc is now damaged and will need to be replaced.
You replace it. The oil is in the clutch face and if you use it, the face will come off of the disc. There is no way to clean it.
I'm assuming you mean the pressure plate on the clutch. It is a time consuming job. The transmission has to come out. Then the clutch comes out. It is about a $600 job to get this done and also put in a new clutch disc. Unless you know your way around transmissions and drive shafts I would suggest having it done.