Cylinder piston rod hydraulic oil leak at the reasons ① trauma - hard objects collide, extrusion and rolling friction or physical injury, such as the slump; ② surface erosion - chemical substances (chlorides, sulfides, acid, gas, etc.) contaminated In the plating surface, appear white spots; ③ paint - the dust ring and U-shaped sealing edge bite occurred; ④ bending - improper operation or due to improper use; ⑤ stretch - improper operation or abnormal use , resulting in a tapered rod screw into place. Even Tai'an excavators school address, nuts off. ⑥ welding sparks --1 direct welding sparks caused by welding sparks flying two indirect; ⑦ electric shock spark - wire strike; ⑧ dust - not a long time, they did not carry out proper maintenance, the piston rod surface stickiness caused by stolen goods (they have not been cleaned before using or cleaning is not clean, were operated for a long time). Step tensioning device to replace the track shoe ① live link pin rotary steering wheel end, from the ground to two sections; ② remove live link pin; ③ hauled tensioner assembly; ④ replace damaged tensioning device components or assemblies; ⑤ install live link pin and cotter pin plug. Taian excavators school address, Kerry and Heavy (certified), excavators schools by 泰安嘉 and Heavy Machinery Co., Ltd. Taian Jia and Heavy Machinery Co., Ltd. (www.tajhzg.com/) is Tai'an, a leader in mining machinery, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Heavy leadership in Kerry and the staff warmly welcome all inquiries negotiations to create Kerry and Heavy better future.