Valve plate face wear, pull the valve plate with grooves using hydraulic roller hydraulic motor repair company, such as JMDG type, NHM type, etc., when the valve plate face wear, especially when pulling a deeper trench, internal leakage increases, so speed is not enough; how about another roller hydraulic repair, pressure compensating clearance mechanism failure also caused this phenomenon. You should grinding or polishing the end face of the port plate. After the damaged piston ring on the plunger seal is damaged, resulting in failure of the seal between the piston and the cylinder bore, internal leakage increases. Time to replace the seals. Roller hydraulic repair factory when the cam is rotated to drop parts of the curve, the spring forces the plunger downwardly, a certain degree of vacuum, the oil tank into the sealed volume under the effect of atmospheric pressure. Cam constantly lift the plunger seal periodically decrease and increase the volume of the pump suction and discharge of oil have continued. Diesel contains a variety of minerals and impurities, if precipitation filtration and purification, will affect the work of the plunger and the injector head, causing oil uneven, poor fuel atomization and other phenomena, the engine power down, increased fuel consumption. Therefore roller hydraulic repair, it is recommended Chai Youjing first set period of time, so that the impurity precipitation, refueling will add the filter funnel filtered out. Then there are regular cleaning or replacement of filters to purify the purpose. Hydraulic roller repair phone | Xi'an Chengtong hydraulic repair | Yulin roller hydraulic repair 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.