Routine Inspection Of Hydraulic Pumps: A Few Things 1. The hydraulic pump checks the internal leakage of the boom cylinder. The easiest way is to raise the boom to see if it can be significantly lowered calmly. If the drop is significant, check the oil cylinder of the device and replace the sealing ring if it is worn; 2. Check the control valve. First wash the safety valve and check whether the valve core is worn. If it is worn, it should be replaced. If there is no change after the safety valve device, check the valve valve for wear. The clearance is limited to 0.06mm, and the wear should be replaced if it is severely worn. 3. Measure the pressure of the hydraulic pump. If the pressure is too low, the scheduling is ended, and the pressure cannot be adjusted, which indicates that the hydraulic pump is severely worn. In the same ordinary terms, the reasons for the tension that constitutes the hydraulic pump boom cannot be lifted continuously are: a. The hydraulic pump is severely worn. Leakage inside the pump is serious during low-speed operation; pump pressure is slightly increased during high-speed operation, but because of pump wear and internal leakage, the volumetric efficiency is significantly lower and it is difficult to reach the rated pressure. The long-term work of the hydraulic pump has reduced the wear and tear, and the oil temperature has fallen, which constitutes the wear of the hydraulic components and the aging and damage of the seals, the loss of the sealing ability, the evolution of the hydraulic oil, and finally the error; b. The selection of hydraulic components is unreasonable. The specifications of the boom cylinder are 70/40 non-standard series, and the seals are also non-standard. The manufacturing cost is high and the seals are inconvenient to replace. The small cylinder diameter of the boom cylinder will surely make the system pressure high; c. The hydraulic pump system is unreasonable. The control valve is a single pump in series with the full hydraulic steering gear. The pressure setting pressure of the safety valve is 16MPa, and the rated working pressure of the hydraulic pump is 16MPa. The hydraulic pump often works under full load or long-term overload (high pressure), and the system has a hydraulic attack, the oil is not changed for a long time, the hydraulic oil is contaminated, the hydraulic pump wear is reduced, and even the hydraulic pump casing explodes. Class error). Zhejiang Yongling Hydraulic Machine Co , Ltd . is a professional China manufacturer and supplier of Hydraulic Pumps . Our products are widely used in cutting, plastic, forging, engineering, leather, pressure, metallurgy, agriculture, transportation machinery and machine tools, hydraulic stations, automatic production lines, etc. Welcome to purchase: https://www.china-vanepump.com/