Hydraulic Power Lift Controls and Power Utilization for Larger Tractors 710685

The paper predicts that the hydraulic power lift (HPL) will continue to serve as the basic mechanism through which control of mounted and semimounted agricultural tractor equipment is accomplished. The evolution of the HPL is reviewed, hitching theory and operating characteristics are summarized and some factors that will be required in future HPL systems are discussed. Finally, an analysis is provided of advanced systems that can potentially furnish types of control that will make feasible fuller power utilization in larger tractors.


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