The the S-O-S was released prematurely and against the advice of engineering. I was a design engineer for various companies, including GM for many years, and can relate to this pressure.
The engineer mostly responsible for design of the Ford S-O-S, was recruited away from Ford by JD to design JD's power shift transmission. That, in itself, should say something about JD's opinion of the technology and the design.
Yes, the S-O-S was improved over the years, significantly in 1963, and again in 1965 (added remotely accessible oil filter in inlet circuit to replace afterthought not externally accessible filter in discharge circuit and needed oil cooler), as are most designs. Ford recalled the problematic early tractors and retrofitted them with the 63 designs, which are quite reliable, given even irregular maintenance. The 65 later versions are just about bullet proof. I've owned both.
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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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