It is to rely on a few of the plunger piston in the cylinder reciprocating sliding process, complete suction - drain process. When the drain, the plunger moves forward, this action driven by the swash plate. When the oil absorption, the rearward movement of the plunger Liyuan Hydraulic motors, this action is to return the disc to complete. Rear cylinder has a spring, a spring pushes the ball of the sleeve, the sleeve push return plate. There are 7 or 9 of the plunger hole hydraulic motors on return plate, press and hold the plunger slipper. In the semi-circle rotation of the suction, return plate inclined rotating shoe pushed to the back of the hydraulic motor is installed, the plunger suction action can be done. As long as the inner wall surface with sand paper slip and check eddy leaves [or gear] whether there are cracks in the hydraulic motor inspection, any necessary replacement parts. Secondly also check whether the shaft deformation [curl]. If necessary the lathe Feasible it would be best all bearing [or Carbon and copper] replacement. [remember each position during assembly should add a little oil up, waiting for inspection] last assembled by hand [or public with] the rotation axis Whether it will be easier and smoother smoothly when general water pump running, 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 mounting. hydraulic motors, hydraulic preferred by the Jinan Jing Jing Chong 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!