1. Hydraulic motors generally require rotating, so the internal structure should have symmetry, while the hydraulic motor repair pump generally rotates in one direction, no such requirement. 2. In order to reduce oil absorption resistance, reduced radial force Liyuan Hydraulic motors, general pump suction port is larger than the size of the oil port. The low pressure chamber of the hydraulic motor pressure slightly higher than atmospheric pressure of the hydraulic motor, so that there is no such requirement. 3. The hydraulic motor requirements can work in a wide speed range, therefore, it should be used hydraulic bearings or hydrostatic bearings. Because when the motor speed is low, the use of a dynamic pressure bearing hydraulic motor maintenance, it is not easy to form a lubricating synovial. As long as the inner wall surface with sand paper slip and check eddy leaves [or gear] whether there are cracks, any necessary replacement parts. Secondly also check whether the shaft deformation [curl]. If necessary the lathe. Feasible preferably all bearing [or Carbon and copper] replacement. [remember each position during assembly should add a little oil up, waiting for inspection] finally assembled by hand [or public with] the rotation shaft is smooth. Usually the pump rotation will be easier and smooth, but the pump will be more difficult [when it feels like when tight not tight] # Important: After assembly is not smooth as it must again double-checked the hydraulic motor repair _ crystal create hydraulic (certification) _ hydraulic motor is provided by Jinan Jing Chong Hydraulic Machinery Co., Jinan Jing Chong Hydraulic Machinery Co., Ltd. (www.jnjcyy.com) (www.jnjcyy.com) Shandong Jinan, mining machinery leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum meet customer needs. In the crystal creating hydraulic leadership with the staff warmly welcome all inquiries negotiations to create the crystal creating hydraulic better future.