Excavator in use among the general failure is digging machine running deviation, the reasons may be assigned to walk seal damage, two hydraulic pumps flow sample sizes, while walking motor problems. Quick discharged hydraulic cylinder as a safety relief valve may be closed lax, Kim Ho-hand digging machine business, or serious damage to cylinder seals and so on. So whether it is new or routine maintenance excavator used excavators have seriously used digging machine business, in order to prevent the excavator's failure, in the course of daily use requires careful attention to the maintenance of the excavator. The use of diesel oil is essential, mainly from the lubrication, cooling, cleaning and so on. Therefore, many drivers will pay attention to check the oil in the oil, according to the standard Add, but it ignores the check the oil quality and oil change has changed, the sale of second-hand digging machine businesses, causing some of the engine's moving parts Total It is in poor lubrication environment operation, thus speeding up the various mechanical wear and tear. Under normal circumstances, the loss of oil is not large, but very easily contaminated, thus losing a role in protecting the diesel engine. Used excavator business sale | Kim Ho used excavators (certified) | Used excavator businessmen from 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.