Concrete pump truck malfunction:
The solenoid valve on the side of the boom multi way valve is damaged.
Phenomenon and reasons:
The bypass solenoid valve of the multi way valve that controls the movement of the boom is damaged, causing the support legs of the boom to be unable to move.
1. The solenoid valve of the multi way valve bypass valve is damaged.
2. The coil of the arm arm arm action solenoid valve is damaged.
Emergency elimination methods:
1. Remove the bypass solenoid valve from the multi way valve, and then use fixed bypass valve screws to block the two control oil holes on the multi way valve.
2. Remove the coil of the arm arm arm action solenoid valve and replace it with a stirring reverse electromagnetic wire diagram, or directly use iron nails to fix the solenoid valve core and fix it with iron wire.
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