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Message: <blockquote data-quote="Tazza" data-source="post: 67874" data-attributes="member: 82">Good lord!!!!I'm not sure lack of lubrication was the cause, but it is possible.From what i understand, if the revs aren't high enough and the charge pressure is low, it allows the shoes on the rotating group to lift off the swash plate and hammer back down as they get load on them. This will belt the crap out of the shoes of the rotating groups and pit the swash plate from the impacts. The thing is, when they do this, you can feel it in the steering levers and it's quite violent, it's a shame the previous owner didn't stop and investigate the issue....Hopefully you can get new rotating groups and swash plates at a good price. Make sure you pull both pumps just in case it got contaminated too.</blockquote>