Hello to everyone from Colorado Springs, Co. Well call me crazy { and my wife does } but I just bought 2 case 580 cks and a equipment trailer that has 2 10,000 lb. dually axles underneath the gooseneck. The question my wife has asked me is what I am going to do with them,,,,,, and my reply was I don't know, but it makes me happy when I look at them. All joking aside the one is in good shape and the other one does not go forward or reverse, so I hope I can find help here. The hyd. oil looks like coffee with alot of creamer. Water contaminant, and was told that might be why it does not move? I am working on cleaning it right now, it was sitting for a long time and needs alot of TLC. Well, I need to get back out there and roll around in the mud and grease again. nice to meet you all !!! Later Lovmyhoe