Founding of New China to the former Soviet Union and other mapping imitation W501.W502.W1001.W1002 1930s - 1940s type mechanical shovels mainly China began excavator production history. At that time, the need of national economic construction and has established more than a dozen excavator production plant. 1967, the modern second-hand excavator market, China has independently developed a hydraulic excavator. Early successful development of products mainly include Shanghai Construction Machinery Factory of WYl00 model, W4-60 Guiyang mining machinery plant type, mining machinery plant in Hefei WY60 type excavators. Then appeared Yangtze excavator plant WYl60 type and Hangzhou of WY250 excavator and other heavy machinery. They took a very important step for the formation and development of Chinese hydraulic excavator industry. In strict accordance with the rules and driving essentials operate, Guangzhou used digging machine market, try to avoid the shift 'to fight tooth', in order to reduce the wear of gears. Strict implementation of the maintenance system, strengthen the maintenance shifting device. When should shift levers Department improperly connected timely adjustments to ensure good performance shifter. Focus on the self-locking mechanism of repair and maintenance, to positioning action to reduce or mis-aligned performance positioning ball, spring and fork shaft, should be repaired or replaced, the performance of self-locking self-locking mechanism is in good condition. Modern hand excavator market | Kim Ho used excavators | Used excavator Wuhan market provided by the Shanghai Used Construction Machinery Co., Ltd. Jin Hao. Shanghai Jin Hao Used Construction Machinery Co. (www.jinhaosh.cn) is the Shanghai Minhang District, 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. Kim Ho used excavators in leadership with the staff warmly welcome all inquiries negotiations to create jinhao used excavators better future.