Pontiac Release Bearing
The Pontiac release bearing also called throw out bearing, is a vehicle component
designed to reduce friction between the pressure plate and the release fork. It
is comprised of ball bearing and collar assembly lubricated and sealed as a unit
pack. A release bearing is connected on a hub sleeve and extends to the front
of the manual transaxle or the manual transmission.
The release bearing synchronizes through the process of friction reduction by
snapping over the end of the clutch fork. With the use of a set of small spring
clips, the bearing stays attached to the fork. In turn, the movements of the fork
towards either direction move the release bearing down the transmission hub sleeve.
The Pontiac release bearing is originally designed to turn forward and condense
the pressure plate levers which on the other hand uncouple the clutch system.
Today, release bearings work through various actuation schemes, and are designed
in many shapes and sizes even though they work in the same function.
A type of release bearing known as angular contact bearing is particularly designed
to stay in stable contact with the spring fingers of the clutch diaphragm operating
ion in a hydraulic system. This results into the release bearings’ utilization
of its self centering properties. Significantly, it helps that balance the misalignment
on the diameter of the diaphragm spring fingers. And with all these, the noise
reduction is improved; the heat and the bearing wear, and the life of the clutch
system is lengthened all at the same time.
The Pontiac release bearing is engineered to work conjunctively with the mechanical
actuation systems and not for constant contact application only, because the pressure
plate fingers and its thrust face is in contact only in the event of clutch actuation.
The given contact time couldn’t be the factor for any slight misalignment, for
it is just too short.
