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Serious noise

Oil sucking filter blockage

Cleaning filter

Low viscosity of oil

Replacement of hydraulic oil with suitable viscosity

Low oil surface in oil tank

Add oil to the upper limit of the oil mark

Oil suction pipe joint leakage

Tighten the joint or replace the O ring of the oil sucking flange

Coupling loosening

Repair or replace a coupling

Wear or damage of oil pump

Repair or replace an oil pump

Piping vibration

Screw the screw to tighten the connecting line

Down vibration and loud noise of the main cylinder

The pressure of the balance valve is too large

Reduce the pressure of the support valve to the medium plate without falling

Lack of pressure or pressure

Overheating of oil pump

Reduce oil temperature or repair oil pump

Wear or damage of oil pump

Repair or replace an oil pump

Low viscosity of oil

Use the recommended hydraulic oil

Damage or failure of pressure regulating valve

Cleaning, repair or replacement of pressure regulating valve

Damage of piston seal

Replacement of piston seals

Main cylinder slide

Upside pressure relief valve has dirty card

Cleaning, repairing or replacing the overflow valve

Damage of fast cylinder seal

Replacement of fast cylinder seal

The downlink of the main cylinder can not go down after slow down

Failure or damage of the filling valve

Repair or replace a fluid filling valve

There is no fast or no slow down speed in the main cylinder

Quick turn slow solenoid valve malfunction

Cleaning, repairing, or replacing a solenoid valve

The main cylinder is slow or can't go up

The high upward pressure is the failure of the filling valve

Repair or replace a fluid filling valve

Low uplink pressure is insufficient for uplink pressure or damage of fast cylinder seal

High pressure or replacement of fast cylinder seal