Radial piston pump works: the drive torque transmitted to the drive shaft of the hydraulic cylinder rotor star by cross coupling, scheduled from other lateral forces. Turn on mounted with the flow axis. Located in the rotor radially arranged piston variable pump repair phone, by hydrostatic balance slipper close to the eccentric line 程定子. Slipper piston and ball joints connected by retainer locks. Two retaining ring on the line card will Slipper 程定子. Axial piston pump is a reciprocating direction of the central axis of the piston and the cylinder parallel piston or plunger. If you walk inside the main valve spring soft or broken, or the valve is stuck variable pump, are likely to lead to lower oil pressure, appear to walk deviation. Check, walking the main valve to measure the oil pressure, normal if 32.5Mpa. If you walk the main valve is damaged, replace or repair. My unit PC200 excavator has twice appeared to walk deviation variable pump maintenance, are due to damage caused by walking the main valve. Therefore, the variable pump refinement, in the event of failure to walk deviation should first consider whether to walk the main valve is damaged, avoid detours. Variable pump sales, variable pump, hydraulic from 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 continuous improvement to create innovative ideas will lead crystal hydraulic and you hand into the brilliant, for a better future!