here is what I found last night. Front tires were at 15# & 18# so I filled them up to 40 (enough to allow for loss while sitting in the cold weather). Later driving showed this didn't help very much.
I found the pressure relief valve in the control/pilot valve and screwed it in one turn and didn't seem to help much, screwed it in another turn which was the maximum and it seemed like the additional pressure helped a little.
I found the power steering lockout on the flow divider valve to be open most of the way except a half turn. I screwed it the half turn out without any help in the steering. I screwed it all the way in and that didn't seem to make any difference. So I screwed it back out and left it.
I did the steering tests with the wheels up(loader bucker down), with wheels on the ground, and while driving. It is basically hard steering all the way left or right like there is no power steering in all three test modes.
I checked the hy-tran fluid with it running and it was full enough that I lost a pint when I pulled the plug before I got it back in. Since I was feeling a little vibration on the larger hose coming from the pump, I went ahead and added 3 more gallons just to be sure. That didn't help the steering any.
I was wrong about one thing though. I did a manual steering test with the engine off and with the wheels both on and off the ground and the steering wheel just turns fairly freely without out turning the wheels. But the IT book states it could be the any of the parts that cause that. There is another post a page or two later than this one with a 656 Diesel that the steering wheel spins that same way. I will post there but the hand pump may be first thing to pull apart and R & R. I just hate to repair every part of the hydraulic system one part at a time in order to fix it(plus spend the money and wait a week for parts to be ordered from Case/IH after I have identifed what parts I want and do this every time). I hope to narrow it down to a specific part.
One other thing I found which I want to ask about. Along side of the loader frame is some type of round oil filter type canister that goes to and from the backhoe. I don't think this helps with the steering but I wanted to ask Bob with the 580C backhoe before I pull it open. Thanks.
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Today's Featured Article - The Fordson F Ignition System - by Anthony West. A fellow restorer contacted me earlier this year asking for some help and advice on a model F that he was restoring. He had over a period of months spent a fair amount of his hard earned cash on replacement parts for the old "trembler" ignition. Sadly though all his efforts seemed to be a waste of time and money as he still couldn''t get the temperamental old thing to run correctly!! If i said that this was a little frustrating for him that would be "conservative" in fact the problem had reduce
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