Abstract: A hydraulic control apparatus for controlling a hydraulic cylinder for an implement selectively mounted to a work vehicle. The apparatus includes a hydraulic power source, a four-position changeover control valve disposed between the hydraulic cylinder and the hydraulic power source, and an operational mechanism for operating the four-position changeover control valve. The four-position changeover control valve has a first position for moving a rod of the hydraulic cylinder in one direction, a second position for stopping the rod of the hydraulic cylinder, a third position for moving the hydraulic cylinder rod at a high speed in the other direction with using a function of a regenerative circuit and a fourth position for moving the hydraulic cylinder rod in the other direction at a standard speed without using the function of the regenerative circuit, in the mentioned order.

Abstract: A hydraulic control apparatus for controlling a hydraulic cylinder for an implement selectively mounted to a work vehicle. The apparatus includes a hydraulic power source, a four-position changeover control valve disposed between the hydraulic cylinder and the hydraulic power source, and an operational mechanism for operating the four-position changeover control valve. The four-position changeover control valve has a first position for moving a rod of the hydraulic cylinder in one direction, a second position for stopping the rod of the hydraulic cylinder, a third position for moving the hydraulic cylinder rod at a high speed in the other direction with using a function of a regenerative circuit and a fourth position for moving the hydraulic cylinder rod in the other direction at a standard speed without using the function of the regenerative circuit, in the mentioned order.