Fix: by welding, fill, plating, vehicles and grinding, grinding and other technology means the part of the shape, size is compensated, so that the care of the repair method and accuracy of the original sealing performance requirements in general paver hydraulic repair, manufacture new parts to repair than to spend less effort, so under the conditions of the structure or performance parts licensed paver hydraulic repair Which is good, using the repair method, in terms of time and cost is usually more economical. Hydraulic spool valve repair using the K-type electro-hydraulic valve pressure relief function shown paver hydraulic repair mechanism shown in 6-32, when 1DT energized, pressure oil through a three-way electro-hydraulic valve into the main squeeze the cylinder chamber, when the pressure rises to a predetermined pressure, pressure gauge sender 2, by the time delay relay packing. After packing paver hydraulic repair company, 1DT power failure, the valve a damper brought under its control delay switch to the neutral position, with the high-pressure oil will move, the amount of K-type valve opening by small gradually increase to large, high-pressure oil will gradually release small to large. When the valve is moved fully in place, most of the energy has been released high-pressure oil, so "gun sound" is greatly reduced. Paver hydraulic repair factory, Xi'an Chengtong hydraulic repair, hydraulic repair paver Shaanxi 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.