Remedy: inhalation rotating air: pump and pump cover is added between paper pad; pump on a plate with a diamond abrasive hydraulic motor is installed so pump and pump cover vertical error of not more than 0.005mm, securing pump and pump cover coupling, without leakage. Cause: (14) pump and the motor drive shaft coupling misalignment, friction with a twist: Remedy: Adjust the concentricity of the pump and motor coupling so that error is less than 0.2mm. Cause: (15) meshing precision gear pump is not enough: Remedy: reach for research gear gear precision. Cause: (16) off the pump shaft seal skeleton, the body is not sealed: Remedy: replace the pump shaft seal qualification. Second, the main performance parameters of the hydraulic pump 1, the pressure (1) working pressure of the hydraulic pump output pressure when the actual work is called work pressure. Working pressure depends on the size of the external load pressure and the discharge pipe of the hydraulic motor loss, regardless of the flow rate of the hydraulic pump. (2) Rated pressure pump under normal operating conditions of the hydraulic motor maintenance, according to test standard specifies a maximum pressure of continuous operation called hydraulic pump rated pressure. (3) The maximum allowable pressure in excess of the rated pressure conditions, according to the test standards, to allow the pump to run short of the maximum pressure plant, known as the maximum allowable pressure of the hydraulic pump motor parts | hydraulic motors | hydraulic preferred crystal Year from Jinan Jing Chong Hydraulic Machinery Limited. Jinan Jing Chong Hydraulic Machinery Co., Ltd. (www.jnjcyy.com) (www.jnjcyy.com) strong, credible, in Jinan, Shandong mining machinery industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead crystal create hydraulic and you hand into the brilliant, for a better future!