The safest and most reasonable method for replacing hydraulic oil in marine cranes

Marine cranes need to replace hydraulic oil after long period of use, and the replacement requires certain skills.

When replacing hydraulic oil for marine cranes, we can use chemical cleaning agents to clean the oil tank and oil filter once, dry them again, and finally add new hydraulic oil.

Is that all? Prior to this, while the engine is running at low speed, the old oil should be gradually drained, and attention should be paid to constantly replenishing new oil to the oil tank to prevent the oil pump from emptying. The discharged old oil should not flow into the hydraulic oil tank. At this time, new hydraulic oil should be used to draining the old oil in the system circuit gradually until new oil flows out of the oil pipe outlet before stopping the hydraulic pump rotation.