1. Open the service side door of the machine;

2. Loosen the connecting of the tube to the minimum pressure valve;

3. Loosen the pipeline on the cover of the air-oil separation tank, and ensure it can be installed correctly;

4. Loosen the fastening bolts on the air-oil separation tank;

5. Lift the cover, clean the oil return pipe;

6. Take out the air-oil separator;

7. Replace with new air-oil separator and gasket.

8. Follow the reverse steps to install, pay attention to check the length of the oil return pipe.

9. Use a torque wrench to tighten the bolts on the cover of the air-oil separation tank