Pump mechanical noise emitted ⑴ main parts of the pump shaft and engine damage took place. ⑵ bearing at the pump. The pump shaft and the engine output shaft misalignment or dieback roller hydraulic repair quote, elastic coupling and coupling block broken loose bolts will produce noise. If the bearing is damaged sound will send continuous buzzing sound. With the roller pump speed increase hydraulic maintenance, noise also followed increases. Bearing damage, the pump will be trembling. Pump has a mechanical noise is the employer and ears to hear, the best method is to pump low speed, industrial stethoscope or screwdriver through clinics in various parts of the pump to listen, slit slit leak leak hydraulic system has two main species, fixed seal (static joints) seal leakage and motion (dynamic binding surface) leak. Fixed seal leak sites including cylinder head and cylinder junction and the like; movement between the seal comprises a main hydraulic cylinder piston and cylinder wall, piston and cylinder head guide sleeve. Leakage gap size and the pressure difference, the gap and other factors. Roller hydraulic maintenance, Xi'an Chengtong hydraulic maintenance, Xi'an roller hydraulic maintenance provided by the Xi'an Chengtong hydraulic maintenance Limited. Xi'an-hydraulic-repair Ltd. (www.huosu360.com) is Xi'an, industrial maintenance, installation of leaders, over the years, the company implement the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Xi'an Chengtong hydraulic service leadership with the staff warmly welcome all inquiries negotiations to create Xi'an Chengtong hydraulic service better future.