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Causes of automatic fall of loader bucket and elimination method

Jul 18, 2018

The operating mechanism of the sliding valve operated by the moving arm is improperly adjusted, so that the sliding valve of the moving arm cannot be completely in the middle position. Please check whether the operating mechanism is adjusted in the middle.


Either damaged piston seal ring or damaged cylinder cylinder cylinder cylinder cylinder cylinder cylinder cylinder cylinder cylinder, resulting in serious internal leakage of the cylinder, the sealing element should be replaced or the boom cylinder should be replaced.


Radial distribution valve operating arm slide valve stem excessive wear, seal lax, should be replaced distribution valve.


The valve on the valve is damaged, causing internal leakage.


Judgment is distributing valve or the oil cylinder of movable arm automatically drop method is: will move the arm up to the highest position, to be addressed to the movable arm stem from the median, listen to the movable arm cylinder in presence of noise, if there is the sound of "peng, peng", distributing valve is faulty, if there is no noise, may be the problem of oil cylinder, should overhaul cylinder.