The work is devoted to the solution of the actual problem of hydraulic engineering - to increase the efficiency of the design process of axial piston hydraulic machines with end distribution of liquid. Based on the results of theoretical and experimental studies, a methodology for constructing a rational process for designing hydraulic machines of this type is proposed, which provides the possibility of high-quality formation of optimal APGM structures with specified operating characteristics. Can be useful for specialists engaged in the development and research of hydraulic drives and their elements, as well as students of technical universities studying volumetric hydraulic machines and transmissions