Hydraulic cylinders are hydraulic energy into mechanical energy, make a linear reciprocating motion (or swing movement) of the hydraulic actuators. Simple structure, reliable work. Use it to achieve reciprocating motion, can be removed from deceleration devices, and no transmission gap, smooth movement, and therefore widely used in various mechanical hydraulic system. Hydraulic cylinder output force and the effective area of ??the piston and the pressure is proportional to both sides; consisting essentially of hydraulic cylinders and cylinder head, piston and piston rod, seals, cushioning device component and exhaust. Cushioning device and the exhaust depending on the specific application may be, the other devices are essential hydraulic hydraulic oil appears dirty or rusty reason mixed with water while a hydraulic oil appears dirty or rusty while checking water mixed with water ① whether the system while the oil cylinder, if so, that the push mechanism V-ring may be damaged. Time to replace the V-ring. ② Check the fuel tank filler neck is not covered, and other contaminants into the water. If it is then filtered to remove water and hydraulic oil and fuel tank filler cover. ③ Check the hydraulic system components ministries, whether because they are caused by oil pollution damage. Second, the master cylinder piston rod vibration due to work ① check whether the oil level is too low, the pump suction air caused by hydraulic cylinder piston crawl. At this point the need to refuel the specified oil level. ② Check the main pump inlet system for leaks. ③ Check whether the push bodies V-ring compression tight three, high oil temperature ① Check the main relief valve is faulty and often overflow. ② Check the auxiliary electro-hydraulic valves, unloading valves are especially fault. Because they make the dispensing valve pumps unloading time is shortened, often in high load operation is faulty. Then the need to exclude its two valve failure. ③ replaced hydraulic oil as hydraulic engineering rod rust and viscosity need to check the oil drain plug is too low double-acting hydraulic cylinder design, the pump internal leakage consumption too. Fourth, the two movements are not synchronized push piston hydraulic cylinder piston push two movements are not synchronized in the suction stroke of the piston speed, the first to reach the end of stroke hydraulic cylinder manufacturer in Shandong, hit the cylinder phenomenon sometimes occurs, you can hear the piston hydraulic cylinder head crash, this is generally due to the closure of memory in the air and cause the oil. Double-acting hydraulic cylinder oil plug design, Shangrao cylinders, 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 hand into the brilliant, for a better future!