Diesel at work, there is a polymer attached valves, valve seats, fuel injectors and the top of the piston. The coke will increase fuel consumption, should be promptly removed. Mechanical overload when the job will be black smoke paver hydraulic repair, it is not sufficient fuel combustion emissions. As long as black smoke often paver hydraulic machinery repair company, will increase fuel consumption, but also shorten the life of components. Repair of pumps and motors mainly refers to the valve plate, liner, thrust plate and return plate and other common vulnerability fixes. The test showed that these parts in wear and corrosion in hydraulic repair paver manufacturers, mostly have 3 to 4 times to repair allowance, it is possible to repair it. Because of the end face of the accuracy of these parts are higher (see Figure 1) hydraulic paver maintenance organizations require a surface roughness Ra of 0.2 μm, flatness of 0.9 μm. These surface failure generally can not be repaired by metallographic abrasive paper, because grit sandpaper on metallurgical easily fall off, sand off easily mounted on the rear surface of the workpiece, thus affecting their performance. Paver hydraulic repair company, Xi'an Chengtong hydraulic repair, hydraulic repair Shangluo paver Xi'an Chengtong hydraulic repair Limited. Xi'an Chengtong Hydraulic Maintenance Co. (www.huosu360.com) is Xi'an, industrial maintenance, installation of leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In Xi'an Chengtong hydraulic service leadership with the staff warmly welcome all inquiries negotiations to create Xi'an Chengtong hydraulic repair a better future.