Abstract: A wood splitting device for mounting on a vehicle, including a hydraulically operated log splitter. The wood splitter is capable of being pivoted from a horizontal position along one side of the vehicle to a vertical position at the rear of the vehicle or to any angular position therebetween, and is operational in any of these positions. The pivoting movement of the log splitter is powered by a hydraulic cylinder which moves guide and support arms pivotally connected to the splitter for supporting the splitter on the vehicle. The cylinder and the log splitter may be connected to the same hydraulic system, driven by an engine through a hydraulic pump and reservoir.