Abstract: An engine cooling system for the internal combustion engine of a motor vehicle, such as a construction machine or the like which operates on uneven or sloped terrain, comprises a radiator having a lower core section and an elongated upper section or top tank separated from the core section by a sealed baffle and extending transversely to the longitudinal axis of the vehicle. The cooling system further comprises fluid conducting passages connected between the radiator and the engine, including a radiator supply line and a radiator return line connected between the core section and the engine. The cooling system also comprises a pair of fluid outlet ports located near the bottom of the top tank and spaced apart from each other in a direction transverse to the longitudinal axis of the vehicle.

Abstract: The power train of a crawler tractor comprises a hydraulically operated modulating main clutch (operated by a clutch control valve) for transmitting motive power from the tractor engine to a hydraulically operated reversible multi-speed range power shift transmission (operated by a shift selector valve) for varying the speed at the output shaft of the transmission. A control lever assembly at the tractor operator's station comprises a manually operable gear selector lever and a manually operable safety lever. The gear selector lever is pivotally mounted on an oscillatable shaft and movable laterally in opposite directions from a centered neutral position to rotate the oscillatable shaft and thereby operate the shift selector valve (connected to the oscillatable shaft) and shift the transmission to either first or second speed ranges in either forward or reverse direction.