For connection to a hydraulic power supply of a tractor, wherein the tractor comprises a plurality of hydraulic supply circuits, and wherein each hydraulic supply circuit comprises a pair of quick couplers for connecting the hydraulic supply circu it to a hydraulic device, a hydraulic motor apparatus comprises a first pair of hydraulic lines adapted for connection to the quick couplers of a first hydraulic supply circuit; a second pair of hydraulic lincs adapted for connection to the quick couplers of a second hydraulic supply circuit; and a hydraulic motor connected to both the first and second pairs of hydraulic lincs such that fluid can flow from both the first and second hydraulic supply circuits through the hydraulic motor to drive the hydraulic motor.
