The pressure switch can control the hydraulic pump motor to stop working. Therefore, when it fails, the hydraulic pump motor will continue to work when the discharge door is closed in place or the pressure exceeds 300bar, so as to heat the hydraulic oil, damage the seal and oil pump, and seriously burn the motor.<br>3.9.6.4 check the overflow valve and pressure switch of the hydraulic system<br>Inspection steps:<br>Loosen the fastening control bolt (countersunk hexagon socket bolt) nut located on the diverter valve of the hydraulic pump.
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