先导阀与压力选择阀属于先导操纵装载机液压系统最为主要的液压元件,且这些元件的故障会导致整个装载机的故障问题。本文分析了装载机先导液压系统最常见故障问题,指出了相应的解决措施,指出了原装载机先导液压系统的改进设计方法,以有效避免故障问题。 The pilot and pressure selector valves are the most important hydraulic components of the pilot-operated loader hydraulic system and the failure of these components can cause problems with the entire loader. This paper analyzes the most common problems of the loader pilot hydraulic system, points out the corresponding solutions, and points out the improved design method of the pilot hydraulic system of the original loader, in order to effectively avoid the problem of failure.