Posted by Mike / Wi on February 08, 2008 at 08:22:57 from (216.56.8.66):
I have a MF 220 Backhoe. I am rebuilding the boom swing cylinder. There are 4 o-rings that seal the 3"OD stainless steel rod. The max pressure is 2200psi. I have my choice of a 70 durometer or a 90 durometer o-ring. The 90 seems to be harder material. There are no specifications available from MF on what kind of o-ring to use. The size is a 3/16 X 3"ID. Any ideas on which one would be better for my application would be appreciated. Thanks in advance for your help.
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Today's Featured Article - 12-Volt Conversions for 4-Cylinder Ford 2000 & 4000 Tractors - by Tommy Duvall. After two summers of having to park my old 1964 model 4000 gas 4 cyl. on a hill just in case the 6 volt system, for whatever reason, would not crank her, I decided to try the 12 volt conversion. After some research of convert or not, I decided to go ahead, the main reason being that this tractor was a working tractor, not a show tractor (yet). I did keep everything I replaced for the day I do want to restore her to showroom condition.
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