How to clean the fuel tank of a small excavator

Owners who have experience in repairing small excavators know that the fuel tank should be cleaned first when adding or replacing oil,and the residual oil and impurities should be discharged.So,regarding the cleaning method of impurities in the fuel tank of a small excavator,the editor would like to talk to you about the three most common cleaning methods.

1.Blowing method

The small excavator retains the residual oil at the bottom of the fuel tank.Take a plastic tube to pass 19.6~29.4KPa compressed air into the bottom of the fuel tank to make the oil in the tank roll.During this process,the end position of the air pipe should be continuously moved to fully flush the entire fuel tank.When the flushing is completed,the small excavator should immediately discharge the oil in the fuel tank.Usually,the above action should be repeated two to three times until the oil discharged from the fuel tank is clear.

2.Steam method

Drain the oil in the fuel tank of the small excavator,disassemble the fuel tank and fill it with half a tank of clean water.Then,take a tube and extend it into the fuel tank along the refueling port,and let the steam enter the fuel tank through the tube to make the water in the fuel tank boil.After keeping the water in the fuel tank boiling for about an hour,pull out the steam tube and drain the water in the small excavator fuel tank.Because the water can wash the colloid and oil impurities attached to the inside of the fuel tank and float on the water surface when it encounters high temperature boiling,the dirt will be taken away as the water is drained.Same as the"blowing method",repeat this action two or three times until the water discharged from the fuel tank is clean,then the fuel tank is considered to be cleaned.

3.Solvent method

Clean the inside of the fuel tank with hot water,and then blow it dry with compressed air.The purpose of this action is to eliminate the oil vapor in the small excavator fuel tank.When the steam is eliminated,take a 10%sodium hydroxide aqueous solution to thoroughly clean the inside of the fuel tank,and then rinse it with clean water.When the inside and outside of the small excavator fuel tank are clean,it is considered to be cleaned.