Before installation and operation of hydraulic jacks why should be cleaned before installing hydraulic jacks and operation must be carried out strictly cleaning, cleaning purpose is to remove the hydraulic jack inside the welding slag, metal powder, fragments of the sealing material, and fully maintained within the external jack clean, you can make hydraulic jacks to work, reduce unnecessary trouble, that hydraulic jacks cleaning work, several steps it is worthy of our consideration of the issue, the following, we will work on the hydraulic jacks to preliminary look clean. After the first wash hydraulic jack is pre-installed (try fitting tube) 500t jacks, remove the tubing all the disintegration conducted. The first cleaning should ensure that the obvious, it may be washed and powdered metal burrs 1000t jack, sand dust, paint, iron oxide, oil, cotton, rubber and dirt all carefully cleaned a lot of clean, otherwise does not allow for the first installation of hydraulic jacks. Cleaning time with the first hydraulic jack size, the degree of contamination of the desired filtration precision, and the hydraulic jacks may be. Generally 1 to 2 days and nights. After reaching a predetermined cleaning time, according to the various types and quantity of the impurity filter in the filter, and then determine whether the end of the cleaning work. Crawling under low speed hydraulic jack appears to be how to do? We use a hydraulic jack, there is always encounter this or that kind of symptom, today small is to introduce hydraulic jacks appear on creeping phenomenon in the case of low-speed solution. In the face of low-speed crawling under a hydraulic jack, jack 600t in order to solve this problem, it is necessary from these aspects: the pressure valve pressure instability, when the block through the orifice when the pressure runout large, or adjust the working pressure too low; the throttle valve is unstable, and in excess of the minimum steady flow valve; pump output flow pulsation large, uneven oil; hydraulic cylinder piston rod and the table aspheric deputy connections, especially long cylinders Do not crawl because fresh produce hydraulic cylinders sealed at both ends adjusted too tight, high friction; hydraulic cylinder, outside a large leak, causing the cylinder pressure pulsation changes; lubricants stabilizer failure, resulting in an unstable jack rail lubricants, sometimes stop. Friction and failed to form a 0. 005- 0. 008mm thick film (experience with full-length guide fingers scraping the surface, such as a dripping attached to the hands of the oil does not drop, the oil film thickness appropriate); lubrication pressure is too low and Workbench also heavy; pipe resonance; hydraulic jacks imported throttle mode and because no back pressure or back pressure regulating mechanism, although a back pressure regulator or agency, but a back pressure regulator is too low, so in some low-speed zone most prone to crawl inside. 500t jacks, Zhangjiajie jacks, hydraulic power provided by the Texas Lu Lu force hydraulic machinery plant. Texas Lu force hydraulic machinery plant (www.luliyeya.com) strong, credible, in Dezhou hydraulic machinery and components industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Lu Hydraulic and you work into the brilliant, for a better future!