Thick rubber O-rings are used a lot too on everything from Bobcats, track loaders and excavators. On excavators they help a lot to keep dirt from getting into the pin and bushing area, but the bucket pivot of on an excavator isn't usually right in the ground. They mostly just get spill over after loading the bucket. It would be interesting to see a real world test of different types of grease and pivot point designs to see if one is superior over the others. Replaceable hard bushings are a good idea but not every machine has them. A worn out pin is easy to replace, cutting the old bushings out and welding new ones on is a lot of work. Dave
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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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