For a hydraulic system of a work vehicle, a fixed connector part fixedly arranged thereon. A fixed connector part has a plurality of hydraulic couplings. A hydraulic work system of a work equipment has hydraulic couplings which are either a movable part having a plurality of hydraulic couplings or a plurality of individual hydraulic connections, each having a hydraulic coupling. The movable connector part is connectable to the fixed connector part by a locking device. The hydraulic couplings of the fixed connector part are constructed to be hydraulically coupled to the hydraulic couplings of the movable connector part and alternatively to the hydraulic couplings of the plurality of individual hydraulic couplings.
