Preparations before welding repair method: hand wheel weld crack at the original oil, paint and rust cleaned. By gouging machine will weld crack plane cut out, cut to the body side of the plane, and the cleaned base material hardened conventional welding area. After cutting plane with the angle wheel will cut polished smooth (inside interfaces polished V-shaped groove), cleaning, pink check, Used Caterpillar excavators for sale, make sure cracks have been found and removed. Prevent component volumetric efficiency drops to abnormal wear and normal wear and tear, should pay attention to. The former may take place within a very short time, Fuzhou Used Caterpillar excavators, quality inspection by the oil and binding function of the quality of the system (such as the actuator operation is normal, Used Caterpillar excavator price, the speed is decreased, etc.) to judge ; the latter should follow certain rules, it should be a comprehensive study, to take timely measures. Used Caterpillar excavator price | Kim Ho used excavators | Used Caterpillar excavator Ningbo Jin Hao from Shanghai Used Construction Machinery Co., Ltd .. 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.