Abstract: A vehicle hydraulic system includes a lube circuit, a pump supplying hydraulic fluid from sump to first and a second hydraulic control circuits and a filter circuit. The filter circuit includes a first outlet connected to the lube circuit, a sump line, and a second outlet connected to the pump. A suction filter is connected between the sump line and second outlet. A return filter is connected to the first control circuit outlet. A return line having an orifice is connected between the return filter and the first outlet. A backpressure valve has a member, an outlet connected to the second outlet, and an inlet and pilot line connected to the return filter outlet. A pressure sense line has one end connected to the return line between the orifice and the first outlet, and a second end connected to the member in opposition to the pilot line.

Abstract: The invention relates to a vehicle component configuration. There is a need for a tractor design which results both in a low operator position and a minimal foot obstruction. A vehicle includes an engine, a transmission, a driveshaft, a rear axle housing, a frame and a seat supported on the frame. The driveshaft has a front end coupled to the engine and a rear end coupled to the transmission. The transmission is positioned under the seat, rearward of a normal operator foot position and immediately adjacent to the rear axle housing. The front end of the driveshaft is lower than the rear end of the driveshaft. The driveshaft extends along a driveshaft axis which is oriented approximately 1.5 degrees with respect to a horizontal plane. The engine has an output shaft which is parallel to the driveshaft, and the transmission has an input shaft which is parallel to the driveshaft.