一、加藤 NK 160汽车起重机吊臂杆变幅油缸自动下沉故障的判断在我们使用的日本进口加藤 NK160液压汽车起重机上,臂杆变幅油缸自动下沉存在如下两种情况:平衡阀工作不良和油缸内部泄漏。为了进一步判断是哪种情况导致自动下沉可按如下办法检查:①置起重机臂杆于任一工作角度,使发 I. Judgment on Automatic Sinking Failure of Gantry NK 160 Truck Crane Crane We have used the imported Kato NK160 hydraulic truck crane. There are two situations in which the boom cylinder is automatically sinking: the balancing valve is not working properly. And the internal leakage of the cylinder. In order to further determine which of the conditions lead to automatic sinking can be checked as follows: 1 crane arm boom at any working angle, so that