Abstract: The mechanism allows the bin to be manually moved from a stowed position to a loading position, and requires support arms which are mounted with self-aligning bearings for proper operation. The bearing has three parts: an interior bin mounted needle bearing axle unit; an exterior bin mounted nut; and an axle retainer unit in the arm. Installation and repair are accomplished from the interior of the bin by the turning of the bearing axle bolt which is threaded unto the arm, and upon disconnection from the arm is automatically gripped by a retainer washer for retention inside of the needle housing while the bin is in its loading position and momentarily arrested by a pin connecting both arms. Self-aligning and linear control is accomplished by the substantially wide needle bearing housing providing full support to the solidly mounted axle bolt.