Driving the plunger with oil pan reciprocating plunger is a small cylinder reciprocating piston pump make the suction pump oil movement is relative sliding of the plunger and plunger sleeve to change the volume to achieve the suction and discharge of oil hydraulic motor repairs , ending in a two-way valve motors installed between the plug and the sleeve by viscosity and oil to seal the gap. Piston axial piston pumps and radial piston pumps. Piston axial piston pumps and radial piston pumps. Remedy: rotate the intake air: pump and pump cover is added between paper pad; pump with a diamond abrasive on the plate, so that the pump and pump cover vertical error of not more than 0.005mm, pump and pump cover fastening coupling hydraulic motors, without leakage. Cause: (14) pump and the motor drive shaft coupling misalignment of the hydraulic motor repair, with a twist of friction: 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. Hydraulic motor sales _ crystal create a hydraulic (Online) _ 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.