So not to mislead you, I have never worked on the machine you have nor am I familiar with how it is assembled. Since I am now getting in this conversation over my head I just looked at some online parts diagrams for it. I see it is a bit different because it looks like the torque converter is a separate unit from the transmission. It looks like there may be a driveshaft in between the converter and the trans. When put it in gear you say you could see the converter output turning but the machine was not moving, in most cases being able to see that is impossible because that shaft would be completely enclosed. That would indicate as you said the problem is in the transmission and not the converter. So in this case the actual hydraulic pump that runs the blade cylinders may also provide hydraulic flow for the shifting in the transmission. Because in this case when the machine is working properly while it is stopped and in a gear the for mentioned driveshaft will be stopped and the converter in ..stall.. So if nothing is turning in the trans it cannot turn a pump to provide hydraulic flow. I am providing a link to parts diagram. This is an alternative parts site to the official CNHI site which is apparently receiving a huge update so it seems to be a little uncooperative. The name of the parts site is avspare, just beware of the adds they like to sneak in. Here is a copy paste of more instructions for using it.. To view more parts sections of your machine go to the small blue print at the top that shows the model you are searching usually by number 4. If you click that it opens the unit parts section just as if you searched for your model in the CNHI page. The diagrams may be fuzzy but if you click them they open like a photo and are clearer. In the part description if you click on the part number it will open up the application list for it. There are a lot of adds on it so beware of those. I also have never tried to buy parts through that site, if you go that way I have found they ask you to email for a quote. That makes me apprehensive. If you are going to do more diagnosis to this machine or try to repair it, the manuals are a must have. Also if you have more direct questions when you get into it there is a ..Crawler and Dozer.. topic section here as well.
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Today's Featured Article - When Push Comes to Shove - by Dave Patterson. When I was a “kid” (still am to a deree) about two I guess, my parents couldn’t find me one day. They were horrified (we lived by the railroad), my mother thought the worst: "He’s been run over by a train, he’s gone forever!" Where did they find me? Perched up on the seat of the tractor. I’d probably plowed about 3000 acres (in my head anyway) by the time they found me. This is where my love for tractors started and has only gotten worse in my tender 50 yrs on this “green planet”. I’m par
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