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Message: <blockquote data-quote="jerry" data-source="post: 7167" data-attributes="member: 931"><p>Thanks Ken for the info, next week I will have to spend a day studying that 853 and the books so I know more about it. It seems to me that in one of your past posts you mentioned running a Serco loader which is coincidental because I just retired as a machinist from Serco. 41 years machining , 22 at Serco the last 10 on CNC. I have been reading the thread from Sterclan on the groany 630, my 632 I got last fall groans a lot on turns, less with high rpm tho. When I got it I changed the hydraulic filter and found it was collapsed inside, bobcat brand too. I then changed the bronze filter and found not much of the brassy particles but dirt and very fine wire bits which I hope were part of the filter. Is it the nature of these old ones to groan since they are driven directly from the motor to the chain or are there problems I should be looking at. The machine is just used around home a few hours a week. One thing tho when I am coming off the trailer with fairly steep ramps it does not gain speed on its own which I think it would if there were much wear in the drive motors. jerry</p></blockquote><p></p>