Description

This bearing is one of the most common thrust bearings found on units from the 1970 s through the 1990 s

It is found on units that have upper crank assemblies. In this instance the thrust bearing is found on the whiffle tree, riding on the thrust nut.

It s also on 3000 series direct drive crank assemblies. In this instance it is located at the back of the crank.

Most power lift models also use this bearing with a thrust nut.

The action of this bearing is a front load. It takes the pressure of the roof, easing lift. If the bearing is or has failed, the roof may be very difficult to raise.