A spray cleaning device for cleaning the interior of a vessel or the like through an access opening in an underside thereof. The cleaning device includes a wheeled carriage positionable in selected relation to a vessel to be cleaned, an elongated frame having a central drive shaft extending along its length, and a rotatable spray head supported in an upstanding relation to a downstream end of said elongated housing for rotation about multiple axes. The elongated frame is pivotably supported by said wheeled carriage for selective positioning of the spray head within the vessel to be cleaned, and the spray head has a liquid supply which communicates with a liquid inlet to an upstanding support thereof downstream of the central drive shaft so said liquid is not transmitted along the drive shaft.