The correct way to replace hydraulic oil for small cranes


Hydraulic oil is the main energy source of power for small cranes, and it plays the roles of energy transmission, anti-wear, system lubrication, anti-corrosion, anti-rust and cooling in the hydraulic system. When the hydraulic oil has been used for a long time, it needs to be replaced in time. When replacing, it is not only necessary to fill the oil tank with oil, but also to clean up a lot of old hydraulic oil remaining in the oil cylinder and hydraulic control valve, because the old and new hydraulic oil in the hydraulic oil tank is mixed, which will cause problems. Speed up the deterioration of new oil. So do you know how to correctly replace the hydraulic oil for a small crane? Let's learn about it together:

First, let off the hydraulic oil in the hydraulic oil tank, clean the oil tank and add new hydraulic oil, then disassemble the hydraulic oil circuit main pipe, start the engine to run at low speed, make the oil pump work, operate each mechanism separately, and then disassemble the oil return pipe of each working oil cylinder The road relies on hydraulic oil to discharge the old oil in the circuit one by one until new oil flows out of the oil return main pipe. Finally, connect the oil return main pipe to the oil tank, and add new hydraulic oil to the oil tank of the small crane to the specified position.