Abstract: A parts washer for cleaning individual parts is disclosed having a compartmentalized washing enclosure housing individual washing and drying chamber which are separated by slideable partitions which open to admit parts, close to isolate parts during a particular washing operation, and open to release parts to a subsequent chamber. The partitions are operated in a predetermined sequence by pivoting arms which are acted on by positive motion cams mounted on a motor driven camshaft. The wash chambers have nozzles connected to a cleaning medium supply for directing cleaner such as hot water or steam onto the part to be cleaned in a predetermined pattern for optimized cleaning and, similarly, the drying chambers utilize nozzles connected to a source of dried, compressed air to dry the heated parts. A feed track moves the parts to be cleaned from the parts source, such as a manufacturing machine, to and through the parts washer.