Lishui used excavators, Komatsu 220 used excavators, used excavators recovered by Kim Ho Jin Hao Shanghai Used Construction Machinery Co., Ltd .. Shanghai Jin Hao Used Construction Machinery Co., Ltd. (www.jinhaosh.cn) is specialized in the "Komatsu excavators, Used Hitachi excavator, used Caterpillar excavators, used Kobelco mining" of the enterprise, the company adhering to the "honesty, hard service" concept, to provide you with the highest quality products and services. Welcome to inquire! Contact: Mr. seats. What is the excavator? Excavator, also known mining machinery Komatsu 450 Excavators, with bucket digging machine material above or below the bearing surface, and transport vehicles loaded or unloaded to the stockyard of earthmoving machinery. Excavators digging the soil material mainly, coal, sand and pine after pre soil and rock. In recent years, development of construction machinery, the development of relatively fast excavators, excavators, construction has become one of the most important construction machinery. Excavators three most important parameters: Operating weight (mass), engine power and bucket bucket capacity. See the commonly used digging machine errors, some maintenance personnel can not accurately determine the fault location, with "probably, almost" blind ideological dismantling of mechanical unloading large, the result is not only the original fault is not excluded, but the emergence of new problems. 1 Nissan Komatsu bulldozer Komatsu 78US used excavators, diesel power shortage occurs, the fault is not working machinery, maintenance personnel disassemble the PT fuel pump and injectors did not find the cause of the fault, replace a fuel pump test 400 Used Komatsu Mining machine, the fault persists. Finally, check the fault is due to the diesel internal impurities, caused by too much water, and this has led to the demolition PT fuel pump performance decreased, insufficient engine power. When mechanical failure, to be detected by the testing equipment to determine the most likely site of failure. In determining engineering mechanical failure, commonly used "exclusion" and "Comparative Law" Excavators, in order from simple to complex, interior after the first appearance, the first order and then part of the assembly were, should not "do not ask indiscriminate, blind Great dismantling unloading. " Mistakes also a personal habit, as long as attention, according to the normal method of operation on it.