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Fault phenomena
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Fault cause
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Solution
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Serious noise
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Oil sucking filter blockage
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Cleaning filter
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Low viscosity of oil
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Replacement of hydraulic oil with suitable viscosity
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Low oil surface in oil tank
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Add oil to the upper limit of the oil mark
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Oil suction pipe joint leakage
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Tighten the joint or replace the O ring of the oil sucking flange
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Coupling loosening
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Repair or replace a coupling
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Wear or damage of oil pump
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Repair or replace an oil pump
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Piping vibration
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Screw the screw to tighten the connecting line
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Down vibration and loud noise of the main cylinder
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The pressure of the balance valve is too large
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Reduce the pressure of the support valve to the medium plate without falling
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Lack of pressure or pressure
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Overheating of oil pump
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Reduce oil temperature or repair oil pump
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Wear or damage of oil pump
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Repair or replace an oil pump
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Low viscosity of oil
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Use the recommended hydraulic oil
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Damage or failure of pressure regulating valve
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Cleaning, repair or replacement of pressure regulating valve
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Damage of piston seal
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Replacement of piston seals
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Main cylinder slide
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Upside pressure relief valve has dirty card
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Cleaning, repairing or replacing the overflow valve
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Damage of fast cylinder seal
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Replacement of fast cylinder seal
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The downlink of the main cylinder can not go down after slow down
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Failure or damage of the filling valve
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Repair or replace a fluid filling valve
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There is no fast or no slow down speed in the main cylinder
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Quick turn slow solenoid valve malfunction
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Cleaning, repairing, or replacing a solenoid valve
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The main cylinder is slow or can't go up
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The high upward pressure is the failure of the filling valve
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Repair or replace a fluid filling valve
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Low uplink pressure is insufficient for uplink pressure or damage of fast cylinder seal
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High pressure or replacement of fast cylinder seal
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