If the excavator has water in the hydraulic tank, only replace the hydraulic oil. Because the hydraulic oil will deteriorate due to water ingress. Hydraulic oil is different from diesel oil. Water will not deteriorate diesel fuel. If the diesel enters the water, it can be used as long as the water is drained. Hydraulic oil plays a great role in the performance and service life of the machine. Many of the hydraulic components are precision parts with mutual movement. Such as reversing valve, pump plunger, motor plunger, etc. The mutual movement of these parts will cause friction. The hydraulic oil plays the role of reducing friction. If the hydraulic oil enters the water, it will affect the lubrication effect. Accelerate the wear of the hydraulic parts of the machine, thus reducing the service life of the machine.
