Currently, the mechanical engineering industry has accumulated quite a lot of experience in producing elements of distribution systems of gear and axial-piston positive displacement hydraulic machines. This experience cannot be used in producing planetary hydraulic machines due to the specific features of their distribution systems, which are designed to create a rotating hydraulic field of the working fluid. The precision of manufacturing of the elements of the liquid system distribution determines the uniformity of the working fluid supply. It has been established that the issues of monitoring the accuracy of manufacturing elements of distribution systems remain open, and the development of measures to control the accuracy of manufacturing distributors is an urgent task. As a result of the research, the controlled parameters of the elements of the contact surfaces of the distributors were substantiated, and a calculation scheme for determining the flow section area was developed. The influence of the accuracy of the location of the holes of the movable distributor on the amplitude and frequency of pulsation of the working fluid in the distribution system has been studied this makes it possible to ensure the stability of the functioning of the hydraulic motor planetary type even at the design stage. A reasonable tolerance of ±10’ on the angular arrangement of the working holes of the movable distributor makes it possible, with a constant pulsation frequency of the flow area, to limit the increase in its amplitude to 1.3 times.