Almost forgot the most important part. Since you let the system drain overnight, you'll want to be sure you flood the pumps with oil prior to start-up. Just follow the hose from case drain filter back to the pump . Loosen at the pump end. Fill tank till oil dribbles from fittings. Do NOT come off idle for at least a minute. Wait for her to stop howling and wailing from the air. Then you can start exercising one function at a time. Start at the furthest and work your way back. Work bucket cylinder, slow and easy being sure not to reach end of travel. Do this 5-6x, then move to your arm. Check the oil level and keep going. Then when all that's done you can swing and walk slowly. Recheck oil level. The big thing is, until all the foam and air have worked their way out, don't hit the relief. You can have issues. The arm cylinder is the worst since it is the highest. Good luck.
