Piston pump bearing shaft is the most important part to support member, if in bearing clearance is not guaranteed portion of pumped fluid permits three normal friction pair gap, but also a bad break deputy rub each static Hydraulic bearing oil film thickness, reducing the plunger so that the bearing shaft pump with life. According to information provided by the manufacturer of the pump are flat bearing axis, the service life of 10000h, this change more than the value of the new port will be required. To the axis of the discharge under split bearings, no professional testing equipment is unable to detect the bearing axis gap swim out, but to use visual, such as found in the roller table marked with complexion changed or marks, it must be replaced. In more should, when bearing axis change note bearing the letters of the alphabet and the original model, columns are large bearing axis of the plunger with large load capacity bearings, it is best to buy the original format of the original regulation, home plant products, if the replacement of another brand, Please teach proper bearing axis of experienced staff look-up table to change the hydraulic pump repair, aimed at maintaining the like of fine grade and load capacity of the bearing axis. Pump can be considered institutions caused by poor control variable hydraulic pump repair, as foreign matter into the variable mechanism, set aside the order marks in the control piston, wear marks, scars, resulting in unstable movement of the control piston (4) Check the oil valve deputy vacuum ring worn a step or scar phenomenon A7V78DR2.0LZF00 A7V78DR2.0LZF00 A7V78DR2.0LZF00 (1) output pressure is too low when the pump is self-priming in the state, if the inlet line or system leak hydraulic cylinder, one-way valve when the valve and so have a greater leakage are cause pressure does not rise up A7V78DR2.0LZF00 A7V80LV5.1RSF00 A7V250EL5.1RSF00 A7V40SC5.1LSF00 A7V78LV2.0RPF00 A7V355LV2.0RZF00 piston work on fuel injection pump camshaft cam and under the action of the plunger spring, forcing the plunger for the upper and lower reciprocating motion, thus completing the task of pumping hydraulic test | crystal create hydraulic price (certified) | pump from Jinan Jing Chong Hydraulic Machinery Limited. 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.