Abstract: Passive rotary wheelchair lift that is retrofittable in transit vehicles on either the forward or rearward edge of a side double-door step well. The lift employs in its preferred embodiment a double slide tube having a box frame with a cross header. A hydraulic cylinder actuates a pair of chains, one descending down each lift tube to operate the vertical lift. A manual hand pump is provided in the case of power failure. Secured to the bottom of inner telescoping lift tubes is a plate carrying a power actuator for rotating the lift platform from a deployed horizontal position to a vertical stowed position. In the stowed position the platform is approximately 26 inches in length and 36 inches in width. The platform has one or more slide-mounted extension sections which permit the platform to extend out to a full 51 inches. Manual or power-actuated wheel stops are provided at the rear entry and the forward end, for either one way or two way entry/exit onto the platform.