The 1080 and 1085 hydraulics are open center, 1100 series are all closed center, very similar to JD. The 1100 series uses an inlet screen before the charging pump, and a five micron filter between the charging and radial pumps. First models had a bypass valve in the five micron filter that would open and let unfiltered oil through when tractor was not serviced properly. There's a service bulletin to DISABLE that valve to force that final filter change when needed. Dad's 1100 hydraulics have never been apart in over 7000 hours use. IF the inlet screen is serviced as it should be, I doubt there would be trouble as some claim to have. Several 1100 series still in use were I live.
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Today's Featured Article - Restoration Story: Fordson Major - by Anthony West. George bought his Fordson Major from a an implement sale about 18 years ago for £200.00 (UK). There is no known history regarding its origins or what service it had done, but the following work was undertaken alone to bring it up to show standard. From the engine number, it was found that this Major was produced late 1946. It was almost complete but had various parts that would definitely need replacing.
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