Commonly used in hydraulic cushioning device has an adjustable throttle and throttle are two kinds of quality changes in the fuel tank, orifice change in style was blocked by oil throttle needle between the piston and the cylinder head outflow section valve opening can be adjusted according to the load, a large initial buffering effect, as the piston travels, the buffering effect gradually weakened, so the brake stroke length, the buffer chamber pressure shock double-acting cylinder, cushioning properties affected by oil a wide range of applications. Hydraulic cylinders are generally by block, cylinder rod and seals composed by the piston inside the cylinder is divided into two parts cylinder, respectively, through a hole. Since the compression ratio of the liquid is small, so that when one hole into the oil, so that the piston will be pushed further out of the oil hole, the piston drive rod do extend (retracting) movement, and vice versa. Cause hydraulic hydraulic oil appear dirty rust or simultaneously mixed with water, a hydraulic oil appear dirty rust or simultaneously mixed with water ① check whether the water system while oil, 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 as hydraulic oil, need to check the oil viscosity is too low, so that the internal pump leakage consumption too. Fourth, the two push piston action does not synchronize the two movements push hydraulic cylinder piston cylinder manufacturers are not synchronized, in the suction stroke of the piston speed, the first to reach the end of the trip, the phenomenon sometimes occurs collision cylinder, piston and cylinder can be heard head crash, this is generally due to the closure of memory in the air and cause the oil. Double-acting cylinders, 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!