Whether it is used for high pressure hand pump, or for use other equipment when inevitably there will be some problems in small hand-pump principle, then we need to have it serviced small manual pump works, but in the manual Failure should be noted that when the hydraulic pump repair and maintenance of the system improvements: 1, first check the power arm in the case of oil leakage chamber. The easiest way is to raise the boom to see if there is a significant free fall, if fall significantly, it should remove the seal system checks the oil chamber. 2, followed also need to check the operating valve. First clean the safety valve, check valve body wear, such as wear and tear should be replaced. If the safety valve remained unchanged after small hand-pump, and then check the control valve spool wear, the gap is generally limits the use of 0.06mm, wear should be replaced. 3. In addition, the professional manufacturer also suggested that we, in the high pressure hand pump encounter any problems, you can contact our service department, Depot maintenance and repair. Manual pump in the specific application, we should pay attention to what point the problem? This is better for everyone's ability to realize the value of manual hydraulic pump is critical, here we have for this knowledge to tell you about: Today we will highlight two points, one of which is when the hand pump connection After the hydraulic system or suction line, if not completely rule out the pipeline and pump gas, then there will be a manual pump, after pulling out of the oil Shanghai Pressure has a small hand pump and reasonable price, with or without loss of pressure before pushing oil abnormal working conditions. Another points to note is that when the manual pump concrete steps must be hit open exhaust oil handle 6, the handle 7 in the end pushed again before pulling back into place, like so repeat 5-6 times (suction pipe diameter φ8, length 1-1.5 meters) can be. In addition, we have noted that in the end we pushed the handle again before this time, close the drain handle 6, pump gas has been ruled out, then hand pump has been part of normal operation. Shanghai small manual pump price is reasonable, small hand pumps, hydraulic speed quality offered by mass-velocity Dezhou City, hydraulic machinery plant. Dezhou City, hydraulic machinery factory mass-velocity (www.dzzhisu.com) (www.dzzhisu.com) strong, credible, in Dezhou hydraulic equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improve the quality of innovative ideas will lead you hand speed hydraulic and into the brilliant, for a better future!