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In an Automobile, What is a Pressure Plate?

Long style pressure plates are mainly used for drag racing.
A car clutch, which is connected to the pressure plate.
Friction makes brake drums and pads work together.
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  • Written By: Eric Tallberg
  • Edited By: O. Wallace
  • Images By: John Heard, n/a, Tarasov_Vl
  • Last Modified Date: 01 October 2014
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The pressure plate is an integral factor in the function of an automobile’s manual transmission. It pushes the clutch disc, sometimes called the clutch plate, against the constantly spinning engine flywheel. The clutch disc is either stationary or rotating, and friction material, similar to that found on brake pads and brake drums, causes the disc to spin at the same speed as the engine flywheel. It is this friction between the 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.

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 plate and the clutch disc away from the flywheel and 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 release their grip and the spring(s) expand to push the plate into the clutch disc, thereby engaging the flywheel. This release process is often called the “clamp load.”

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There are three major types of pressure plates:

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Discuss this Article

anon957857
Post 10

Why adjusting bolts given in the pressure plate?

anon278371
Post 9

I have replaced a clutch plate and drove my srx (Hilux) 2y Engine for only two weeks. Now I cannot drive it; the gears are engaging with or without the clutch pedal even if the engine is running. What can be the problem with my hilux?

anon41981
Post 4

what causes the pressure plate to wear if the clutch is good?

anon38021
Post 3

sir what is clutch plate and its function? I need basic carification.

anon35865
Post 2

what causes a clutch pressure plate to warp?

anon32247
Post 1

What materials are generally used for the clutch pressure plate?

How to increase the wear resistance of the Pressure Plate in a dry clutch assembly used in commercial vehicles?

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