. Steering roller repair, not the direction, "killed", especially in the pivot turn, to leave enough margin to ensure the hydraulic steering system is in normal working condition. Hydraulic system efficiency depends mainly on the volumetric efficiency of roller pump maintenance costs, while the volumetric efficiency drops to 72%, the need for regular maintenance Roller maintenance and installation, replacement bearings and seals of aging, to be replaced or repaired outside the complex The friction pair gap, its performance is restored. When there is some leakage adhered roller repair factory adhesion between a viscous liquid and solid arm, the latter two contacts on a solid surface adhesion on a thin layer of liquid, thick film on a solid surface if, film due to mutual movement is produced seals scraping adherent leak. The basic way to prevent leakage is to control the liquid adhesion of the adhesive layer thickness. Roller maintenance production, Xi'an Chengtong hydraulic maintenance, repair by the Xi'an-Xianyang roller through 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.