When the cam portion is rotated to decrease 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 hydraulic oil uneven paver repair factory, poor fuel atomization and other phenomena, the engine power down, increased fuel consumption. So paver hydraulic repair, it is recommended Chai Youjing first set period of time, so that the impurity precipitation paver hydraulic repair company, refueling will add the filter funnel filter out. Then there are regular cleaning or replacement of filters to purify the purpose. Typically, the failure of the hydraulic pump is divided into two stages: First, the performance of the output flow of hydraulic paver inadequate maintenance of telephone, volumetric efficiency decreases (less than 70%), resulting in a slow mechanical action; then, the performance of the output pressure drops, resulting in mechanical action weakness. In both cases, the hydraulic system is not working properly. Through the damaged pumps and hydraulic motors were dismantling found, affecting its normal work because of the following aspects: Paver hydraulic repair company, Xi'an Chengtong hydraulic repair, hydraulic repair paver Weinan Xi'an Chengtong Hydraulic Maintenance 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.