Abstract: A method for forming hydraulic oil passages for hydraulic actuators according to an aspect of the present invention includes: forming a valve block mount surface including first and second regions on an outer surface of a housing; collecting valves for hydraulic actuators belonging to a main function group to a main function valve block that is mountable directly or indirectly on the first region; collecting valves for hydraulic actuators belonging to an additional function group to an additional function valve block that is mountable directly or indirectly on the second region; and mounting the valve blocks on corresponding regions of the valve block mount surface, and thereby, the hydraulic actuators to be mounted are fluidly connected to each other so that the hydraulic actuators are operable by using hydraulic oil from a common oil source.

Abstract: A working vehicle having a main transaxle casing supporting a first PTO shaft and a center-pivot transaxle casing supporting second PTO shaft, improved in a transmission system for the second PTO shaft. Particularly, the center-pivot transaxle casing is provided at the portion thereof lower than its pivot with the second PTO shaft. The output power of the first PTO shaft is transmitted to the second PTO shaft by a propeller shaft and universal joints. If a working machine to be driven by the first PTO shaft is disposed between the both transaxle casings, the output power of the first PTO shaft is transmitted to the working machine, and afterward to the second PTO shaft.