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1台NK-200型汽车起重机行驶过程中,无论是向左转向还是向右转向均沉重,只得停车检修。经分析认为,液压油质量不良、转向阀与转向助力缸卡滞、转向泵泵油不良以及辅助件磨损等,均会造成上述故障。排查过程如下所述。1.检查液压油质量若液压油变质,将使转向泵间隙的泄漏量增大,进而将导致系统压力过低。打开油箱检查,液压油品质正常,油量充足。
A Taiwan NK-200 truck crane during driving, whether it is turning left or right are heavy, only parking maintenance. The analysis shows that the poor quality of hydraulic oil, steering and steering booster block, poor pump oil pump and auxiliary wear, etc., will cause the above failures. The investigation process is as follows. 1. Check the quality of hydraulic oil If the deterioration of hydraulic oil, the steering pump will increase the leakage gap, which will result in system pressure is too low. Open the tank check, hydraulic oil quality is normal, adequate oil.