Confirm that the main controller and Liugong excavator actuator controller are not faulty, and the 888# line has voltage input, and the actuator still does not operate, you can check and confirm according to the following methods.
Check the actuator with the multimeter resistance file 2009 file measurement, check the actuator plug, when the actuator push rod is not in the limit position (receiving the head or reaching the head).
If the actuator does not meet the above measurement results, you need to check whether the pin at the plug is loose. For the open or occasional pin, you need to touch the wire by hand to see if it is broken by an external force (wire Break, the insulation is intact), if the above pin is not loose and the wire is not crushed by external force, it can be regarded as an actuator failure.
Precautions: Please note that in the content of serial number 3, if the total resistance is 20K actuator, it may be different. In addition, please note that the color of the wire in the figure may change. The plug to the position shall prevail.
