I had this problem when I set up my hydraulic press.

Just topped up the tank and ran the thing back and forth a few times.

Then it was fine.

I would assume that the compressed air "dissolves" in the oil
and once it gets back to the tank, it just kind of bubbles off.

DOC



"habbi" wrote in message
...
Is there a way to actually bleed the air from a hydraulic system which
uses
cylinders? If not does the trapped air in the cylinder just get compressed
to the working pressure and add a cushion effect?