I bought a John Deere 5210 and changed the power steering filter and fluid. After that, the steering and lifting arms stopped working. How can such a malfunction be eliminated?
I believe that changing the oil and filter is the cause of the malfunction. You have incorrectly replaced and air has entered the system. Because of this, the indicated units do not work. It is necessary to remove air from the system. Or you are using non-original spare parts. Try replacing the old filter and see the difference.