Abstract: Disclosed is a method and apparatus for cleaning a conveyor belt. The invention comprises locating a support bar under the return side of a conveyor belt and positioning it transverse to the direction of travel of the conveyor belt. The support bar has mounted on it several individual piston-cylinder apparatus which have pneumatic or hydraulic connections to a manifold assembly. Support plates are connected to the extensible end of the piston-cylinder apparatus and cleaner blades are removeably attached to the support plates. The cleaner blades and piston-cylinder apparatus are arranged adjacently with one another along the length of the support bar, and the blade assemblies have side edges with tongue and groove connections so that each adjacent cleaning blade has a sliding engagement with one another. Connecting to the manifold assembly on the support bar are pneumatic supply and return lines that emanate from a pressure source having a regulator and a two way valve.