I hope for his sake you are correct on your diagnosis, that being said, I have had several hydros apart, never once did I find that to be the problem. Had stuck shuttle valves, plug fell out on end of shuttle valve causing a lurch problem, several worn lever mechanisms causing drive to stop midway into range and a host of simple to complete trashed units. I would suspect something in the speed ratio cam or orfices or servo cylinders myself and would do a pressure test on the servo circuit but, there are a million things that can and do happen inside these units. For the most part, they are very reliable with good clean fluid and filters changes.
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Today's Featured Article - Grain Threshing in the Early 40's - by Jerry D. Coleman. How many of you can sit there and say that you have plowed with a mule? Well I would say not many, but maybe a few. This story is about the day my Grandfather Brown (true name) decided along with my parents to purchase a new Ford tractor. It wasn't really new except to us. The year was about 1967 and my father found a good used Ford 601 tractor to use on the farm instead of "Bob", our old mule. Now my grandfather had had this mule since the mid 40's and he was getting some age on him. S
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1965 International Harvester McCormick Farmall cub tractor 2,500. Two owner tractor. My grandfather bought new in 1966, then we inherited it. Have all the paperwork original manual and all maintenance records. It starts and moves. Comes with underbelly mower, plough, and some other attachments.
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