Concrete pump truck malfunction:
When the concrete pump truck is working, the first boom automatically falls down.
Phenomenon and reasons:
During normal operation of the concrete pump truck, if the boom cannot be supported, the first boom oil cylinder may automatically fall, which affects construction safety.
Emergency elimination methods:
Retract all the booms and place them on the main support of the concrete pump truck. For the concrete pump truck equipped with a Wiggers balance valve, simply swap the rod chamber and rodless chamber of the oil cylinder balance valve core up and down; The balance valve produced in Italy requires the overall replacement of the balance valve block between the rod chamber and the rodless chamber of the oil cylinder.
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