Raptors, the authorized dealer of Cummins (China), established in 2015 by Mr. Jordan Wang who worked in Cummins (China) for 8 years, Jordan had been responsible for mine market for 4 years during working in Cummins china, so we have big advantages for almost all genuine Cummins generators, engine assembly and spare parts, especially for NTA855, KTA19, KTA38, KTA50, QSK60, QSX15 etc...
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Because the engine valve needs to be worn, and there is a problem of thermal expansion and contraction, if the mechanical transmission is used, it is easy to cause the valve to be poorly sealed or the valve sound is abnormal (loud), which will affect the engine power. The pressure of the oil to open the valve has a lot to do with the viscosity and temperature of the oil. Generally, when the engine is just started, the temperature of the oil has not reached the normal value, which makes the viscosity unsuitable for the normal operation of the hydraulic tappet. value, the tightness of the hydraulic tappet is reduced, resulting in large valve clearance and sound. After the engine reaches the normal working temperature, the valve sound will be reduced until there is no voice