Check engine warm-up drive launched after the operation, skew side of the machine to make it stand alone track, Carter used excavators, sequential rotation were standing on both sides of the track. Note that within 30 seconds, or 60 seconds how many times such an operation can be completed, and then compared with the other track. Excavator crawler device is a built-in flow meter, if not both the same flow, used excavators, then there is doubt. Another method of detection is to control the operation of the excavator on the ground 10 meters, if running in a straight line, it is possible to know the same on both sides of mobile equipment operating condition is good. See also the same inversion ring gear and reverse bearings. Under normal circumstances, the upper part of the engine can be smoothly and accurately reverse parking, only a few or no errors. For small excavator, 215 used excavators, its reverse ring gear and reverse bearing the same machine should have the same number of long life, and therefore had to pay attention to any of this, some questions. Domestic hydraulic excavator with a large gap between foreign countries, which we have to admit, a lot of the early domestic introduction of foreign technology joint production of excavators, would like to use the market for technology, with little success. This is the same boat and China's auto industry, saying the decision height basis, I think the main reason for the gap is that our industrial base! Design and manufacture of hydraulic excavators need to have a strong industrial base as a guarantee, 230 second-hand excavators, and our industry started late because of historical reasons, basic scientific research can not keep up, resulting in China's hydraulic excavator is always a step, but the river . In addition, the hydraulic excavator manufacturing also involves special materials, complex components casting, precision machining, sintering copper surface, surface heat treatment, high-performance seals, hydraulic integration engineering and other technologies. 215 _ used excavators used excavators used excavators _ Kim Ho Jin Hao from Shanghai Used Construction Machinery Co., Ltd. Shanghai Jin Hao Used Construction Machinery Co. (www.jinhaosh.cn) strong, credible, in Shanghai Minhang District of mining machinery industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead jinhao used excavators into the brilliant and you work for a better future!