Patent ID: 8839489

Claim:
An assembly for adjusting the height of a door on a transit vehicle comprising: a bearing, a support member ( 10 ) for positioning said bearing ( 12 ) adjacent a door opening, a door shaft ( 16 ) journaled in the bearing ( 12 ) and supporting a door arm assembly ( 18 ), said door shaft ( 16 ) having a lower portion hung below the bearing and an upper portion having exterior threads extending above the bearing ( 12 ), a nut ( 20 ) positioned above and supported axially by the bearing ( 12 ), said nut ( 20 ) being threaded onto the exterior threads of the door shaft ( 16 ), wherein rotation of the nut ( 20 ) relative to the door shaft ( 16 ) raises or lowers the door shaft ( 16 ) and said nut ( 20 ) is positioned above the bearing, and wherein the door shaft extends above the nut such that the nut and the door shaft are accessible to be grasped and rotated relative to each other.