Is the hydraulic system of the excavator dirty? Let me tell you what to pay attention to when cleaning

When cleaning a general hydraulic system, working hydraulic oil or test oil is mostly used. Do not use kerosene, gasoline, alcohol, steam or other liquids to prevent corrosion of hydraulic components, pipelines, oil tanks and seals, etc.

During the cleaning process, the hydraulic pump operates and the cleaning medium is heated simultaneously. When the temperature of the cleaning oil is (50-80) ℃, the rubber residue in the system is easy to remove.

During the cleaning process, a non-metallic hammer or rod can be used to strike the oil pipe. The strikes can be continuous or intermittent to facilitate the removal of adherents inside the pipeline.

4. Intermittent operation of the hydraulic pump is conducive to improving the cleaning effect, and the intermittent time is generally (10-30) minutes.

5. On the return road for cleaning the oil circuit, a filter or filter screen should be installed. At the beginning of cleaning, due to the large amount of impurities, an 80-mesh filter screen can be used. Later on, switch to a filter screen with a mesh size of 150 or more.

6. The cleaning time is generally (48-60) hours, which should be determined based on factors such as the complexity of the system, filtration accuracy requirements, and the degree of contamination.

7. To prevent rust caused by external moisture, the hydraulic pump should continue to operate until the temperature returns to normal after the cleaning is completed.

8. After cleaning, all the cleaning oil in the circuit must be drained completely.