The viscosity of the hydraulic oil is a factor when selecting the first consideration, at the same operating pressure, the viscosity is too high the quality of high and low pressure of the electric pump, the hydraulic resistance increases member movement, heating to accelerate the self-priming pump capacity decreased line pressure drop and power loss increases, great; if the viscosity is too low, it will increase the volume loss of the hydraulic pump, high and low pressure electric pump leakage increases in the price components, thin film and the sliding member, supporting ability. The pump maintenance once a year. Clean all parts with kerosene, to protect the mating surface, one shall be arbitrarily high and low bump flashlight electric pump, after assembly, all moving parts should be flexible movement, no local jamming. High quality low voltage electric pumps, Texas aerospace hydraulic, Changchun high and low pressure electric pump provided by the Dezhou City aerospace hydraulic machinery plant. Dezhou City aerospace hydraulic machinery plant (www.sdhtyeya.com) is a leader in Dezhou, hydraulic equipment, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Texas aerospace hydraulic leadership with the staff warmly welcome all inquiries negotiations to create the Texas aerospace hydraulic better future.