If the superstructure is crossways, make sure that the foot section is not lying on the track groups or the outrigger struts of the auxilliary support (if required, props up the boom to a higher level).

• 如果上车为十字交叉型的，则务必确保臂杆根部没有接触到履带组或辅助支承上的支腿压杆（如够必要，可把臂杆垫得更高些）。