Share maintenance methods for repairing excavator hydraulic oil
Posted: Oct 24th, '24, 04:09
The hydraulic oil in most excavator hydraulic tanks is exactly 1/2 of the total oil in the hydraulic system of the whole machine, and the remaining hydraulic oil is stored in the hydraulic pump, motor, multiway valve, hydraulic cylinder and the pipelines of various parts. During the oil change. If only the hydraulic oil in the tank is replaced, instead of replacing all the hydraulic oil in the hydraulic system of the vehicle, this method only mixes the old oil with the new oil.
Therefore, to fundamentally deal with the cleaning problem of the hydraulic system, it is impossible to dispose of the oil in the hydraulic tank by changing the oil, because even if the oil in the hydraulic system tank is drained, there are still many old oil in the hydraulic system, and when the new oil is written, it must be polluted by the old oil remaining in the system, and then greatly reduce the cleaning degree of the hydraulic oil. Therefore, this oil change method can not deal with the problem of oil quality cleaning degree, as long as the old oil in the hydraulic system is circulated together with the operation of the vacuum filtration system, the cleaning degree of hydraulic oil can be fundamentally improved.
1. According to the oil specification of construction machinery, the pollution degree of general hydraulic oil should be controlled at NAS≤8 level, and the filtration accuracy of new hydraulic oil is required to be 1 to 3 microns when filling the tank in the oil station.
2. According to the hydraulic design specifications of the hydraulic oil circuit of construction machinery, the filtration accuracy of the hydraulic oil filter can only be limited to a minimum of ≥10 microns, and even the filtration accuracy of some loaders will be greater. If it is less than 10 microns, it will affect the oil return flow rate and the working speed of the car, and even the filter element is bad!
The most commonly used selection of hydraulic oil filter element is: the filtration accuracy is 10μm50%, the pressure scale is 1,4 ~ 3,5 MPa, the additional flow rate is 40 ~ 400L/min, and the recommended replacement time is 1000h.
3. The service life of hydraulic oil is generally 4000-5000h, which is about two years.、
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Therefore, to fundamentally deal with the cleaning problem of the hydraulic system, it is impossible to dispose of the oil in the hydraulic tank by changing the oil, because even if the oil in the hydraulic system tank is drained, there are still many old oil in the hydraulic system, and when the new oil is written, it must be polluted by the old oil remaining in the system, and then greatly reduce the cleaning degree of the hydraulic oil. Therefore, this oil change method can not deal with the problem of oil quality cleaning degree, as long as the old oil in the hydraulic system is circulated together with the operation of the vacuum filtration system, the cleaning degree of hydraulic oil can be fundamentally improved.
1. According to the oil specification of construction machinery, the pollution degree of general hydraulic oil should be controlled at NAS≤8 level, and the filtration accuracy of new hydraulic oil is required to be 1 to 3 microns when filling the tank in the oil station.
2. According to the hydraulic design specifications of the hydraulic oil circuit of construction machinery, the filtration accuracy of the hydraulic oil filter can only be limited to a minimum of ≥10 microns, and even the filtration accuracy of some loaders will be greater. If it is less than 10 microns, it will affect the oil return flow rate and the working speed of the car, and even the filter element is bad!
The most commonly used selection of hydraulic oil filter element is: the filtration accuracy is 10μm50%, the pressure scale is 1,4 ~ 3,5 MPa, the additional flow rate is 40 ~ 400L/min, and the recommended replacement time is 1000h.
3. The service life of hydraulic oil is generally 4000-5000h, which is about two years.、
Choose DIG-DOG for high-quality, customizable brush cutters for skid steers with fast delivery. Contact us today to discover how our superior products can enhance your land management tasks!
for more info just visit our website at www.dig-dog.com
contact # : +86 158 6218 2088
email : sales@bonovogroup.com