I'm not confused - but do get a little disgusted with the overcomplication that exists in newer equipment. For my purposes, and many others, it's hard to beat simplicity. I'll take an open center tractor with a gear pump and many generic parts anytime than some rig with proprietary and expensive parts.
In regard to the terms "open center" and "closed center" - in general, they refer to the type of hydraulic function control valve used - regardless if on a tractor, a press, log splitter, steering system, etc. If the valve when in neutral lets all oil pass - then it has an open center. If it blocks all flow of oil, then it is a closed center. It's as simple as that. But, many tractors and other machines are, more-or-less hybrids with no proper or discrete label.
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Today's Featured Article - Upgrading an Oliver Super 55 Electrical System - by Dennis Hawkins. My old Oliver Super 55 has been just sitting and rusting for several years now. I really hate to see a good tractor being treated that way, but not being able to start it without a 30 minute point filing ritual every time contributed to its demise. If it would just start when I turn the key, then I would use it more often. In addition to a bad case of old age, most of the tractor's original electrical system was simply too unreliable to keep. The main focus of this page is to show how I upgr
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