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我单位一辆ＮＫ１６０型全液压起重机在使用过程中，司机一直反映起升过程工作无力，重载时尤为明显，而其它功能正常。根据其工作原理和先易后难的原则，我们制定以下检修方案。 （１）用压力表检查上车操作控制阀压力为２４．５ ＭＰａ，略低于规定压力 ２５ ＭＰａ。调整后
I unit a NK160 full hydraulic crane in use, the driver has been reflected in the lifting process work weakness, especially when heavy load, while the other functions are normal. According to its principle of work and the principle of easy first, we develop the following maintenance programs. (1) check with the pressure gauge on the car operation control valve pressure of 24.5 MPa, slightly lower than the required pressure of 25 MPa. adjusted