Abstract: With the extension of service period of Shanshan-Lanzhou Oil Pipeline, Ruhrp pumps needed overhauling, for which the guidance of specific technical requirements would be required. According to the structural characteristics of Ruhr pumps, the key points and basis of overhaul of each structure were analyzed. Based on the structural characteristics of Ruhr pump rotor, the structural and technical requirements of the mechanical seal and structural parameters of the bearing, etc., the contents and technical requirements for overhaul of Ruhr pumps were summarized, the adjustment methods and technical requirements of impeller, mechanical seal, axial displacement, etc. as well as other points of focus in overhaul operation were specified. The application results show that after overhaul, the vibration of Ruhr pump is effectively reduced, and the operation parameters are obviously improved compared with those before the overhaul. It is supposed to provide some reference for the overhaul of Ruhr pump units and the centrifugal pump units.