Z3050 rocker drilling and drilling hydraulic system control valve failure and maintenance
(1) The control valve is not flexible, mainly due to the embrittlement of the valve body and the valve core and the jamming of foreign objects. It should be removed, cleaned and installed, and can be easily rotated.
(2) Displacement of the valve core and the valve body can make the hydraulic system malfunction and cannot work normally. The correct positioning of the valve core on the valve body should be stopped by the set screw.
(3) The leakage is serious because the gap between the valve body and the valve core is too large, and the valve body or the valve core should be replaced.
(4) The valve oil circuit is blocked, the oil circuit is not smooth, the pressure oil can not enter the action cylinder, so that the hydraulic system can not work normally. The valve body should be disassembled, the valve core should be cleaned with kerosene and reinstalled.
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