When air enters the hydraulic system of electric forklift, it will cause many faults, such as cavitation , which will make the hydraulic components work unsmoothly and produce noise, seriously affecting the work progress.
In general, in the no-load state of electric forklift repeatedly lift, drop, forward, backward and other actions, so that the air in the system can be discharged back to the tank. But we should pay attention to add enough oil in time, so that the oil level is often not lower than the oil mark indicating line.
When the lifting cylinder uses the plunger cylinder, it can be loosened at the same time as the plunger rises to deflate. When the piston cylinder is used in the lifting cylinder, the loose inlet pipe joint can be discharged when the piston drops near the lowest point with no load. Regardless of the brand of electric forklift truck, tighten the plug or inlet joint immediately after removing the presence of oil without bubbles.
How to prevent air from entering the hydraulic system of electric forklift truck? In the process of using and maintaining electric forklift, First, we should often check the oil level height of hydraulic oil, so that it can always stay on the oil marking line. In a variety of working conditions, so that the pump suction port is always below the liquid level.
Second, we should try our best to prevent the pressure in the hydraulic system from being lower than the atmospheric pressure. At the same time, we should use a good sealing device, replace it in time when it fails, tighten the nut at the tubing joint and each joint surface, and clean the filter at the pump entrance in time.
Third, the cylinder with the exhaust valve should be opened in time according to the situation, but it should be tightened after releasing the gas. Fourth, no matter what the brand of electric forklift is, when conditions are possible, you can add defoaming in the oil or set up defoaming net in the tank to facilitate the suspension and bursting of bubbles in the oil.
The above is the way to discharge the air in the hydraulic system of electric forklift truck, and the preventive measures we can take.
Post time: Apr-01-2023