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1台ZL50型装载机行驶时转向沉重,且左、右转向都不能转到极限位置,进行原地转向试验时,无论发动机怠速还是高速,转向沉重均比较明显,初步判断为转向液压系统出现故障。1.转向液压系统组成及原理如附图所示,该转向液压系统主要由吸油滤油器1、转向泵2、IWLF型单路稳定分流阀3、三通球阀4、FLD型单路
1 ZL50 wheel loader turns heavy when driving, and the left and right steering can not turn to the limit position. During the on-the-spot steering test, no matter the engine idle speed or high speed, the steering is heavier and heavier, and the steering hydraulic system is initially judged to be faulty . 1. Steering hydraulic system composition and principle As shown in the figure, the steering hydraulic system is mainly composed of oil suction filter 1, steering pump 2, IWLF type single stable diverter valve 3, three way ball valve 4, FLD type single