Work tank level should remain at the center of the oil the subject line, to prevent the pump suction air. When refueling, use 120 mesh grease filter impurities in filtered fresh oil. When regular use, jack, oil filter cleaned once every two months, hollow jack, half a tank cleaning, manual jacks, and replace with new oil. Hydraulic actuator is used to perform hydraulic pump provides hydraulic energy into mechanical energy The device, Lu power jacks, including hydraulic cylinders and hydraulic motors. The hydraulic motor is the hydraulic pump means work to do the opposite, that is, the energy conversion is called hydraulic mechanical energy, whereby external work. Hydraulic control components for controlling the direction of fluid flow, pressure, level and flow rate to be expected size of controls to meet specific job requirements. It is because of the flexibility of the hydraulic control components, making the hydraulic control system to perform different activities. Hydraulic control components can be divided according to use pressure control valves, flow control valves, directional control valves. According to the operation mode can be divided into human control valve, mechanically operated method, electrically operated valve. Hollow jack | Lu Hydraulic (Online) | jack provided by the Texas Lu hydraulic equipment factory. Texas Lu force hydraulic machinery plant (www.luliyeya.com) is an industry leader in Shandong Dezhou, hydraulic machinery and parts, over the years, the company implement the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Lu Hydraulic leadership with the staff warmly welcome all inquiries negotiations to create Lu Hydraulic better future.