(Continued a) 8, the first to use the excavator hydraulic oil must be clean, in line with the use of the label when the season, to ensure the smooth flow of oil into the pipeline, are not allowed into the air, regular cleaning nets or replace the filter, hydraulic oil allowed moisture content Taian excavator schools Which is good, according to the season to replace the hydraulic oil, replace the oil pump refuel power source should be in loose exhaust bolts, exhaust air. Cylinder piston rod hydraulic oil leakage reasons ① trauma - hard object collisions, extrusion and rolling friction or other injuries slump matter; ② surface erosion - chemical substances (chlorides, sulfides, acid, gas, etc.) contaminated In the plating surface, Tai'an excavators school address, appear white spots; ③ paint - so dust ring with a U-shaped sealing edge bite occurs; ④ bending - improper operation or abnormal use due; ⑤ stretch - Operation improper or abnormal use, excavators school, resulting in a tapered rod screw into place. Even nuts off. ⑥ welding sparks --1 Direct Indirect welding sparks flying sparks caused by welding; ⑦ shock spark - wire strike; ⑧ dust - not a long time, they did not carry out proper maintenance, the piston rod surface stickiness due to stolen goods (prior to use and not cleaning or washing is not clean, a working longer). Taian school address excavator, excavators school, Kerry and excavators school (view) provided by 泰安嘉 and Heavy Machinery Co., Ltd .. Taian Jia and Heavy Machinery Co., Ltd. (www.tajhzg.com/) is Tai'an, mining machinery leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Heavy leader in Kerry and the staff warmly welcome all inquiries negotiations to create Kerry and heavy industry a better future.