A collection mechanism for a side loading refuse collection vehicle that can move both horizontally and vertically to service multiple compartments designed for specific types of refuse or recyclables. A grabber assembly can move horizontally on a rail in either a lowered position or in a raised dumping position. The grabber assembly can move vertically on a mast. Preferably a sprocket wheel and a track are utilized to move the grabber assembly vertically from a street position to a dumping position.