It must have been abused pretty good. Maybe something could be fabricated.
Yes, it was abused badly. The prior owner broke it, and attempted a horrifyingly inadequate attempt at a "weld" with what looks like a 110v Harbor Freight hobby MIG. I'm sure it works fine for him for the small structural steel he blobs together, but with a casting this size it never stood a chance. They attempted the weld repair, which was laughably inadequate, and the weld leg go as soon as they put ANY strain on it. I'm actually surprised it held at all, as he said that it managed to even support the weight of the boom and stick alone. Anyway, not looking for welding advise here. I appreciate the thoughts, but that's not the path I'm attempting here and really just need some leads on bone yards that are likely to have parts for an 80-something Massey Ferguson MF60 Industrial Tractor. I can find MF boneyards, but they all seem to cater only to farm tractors and don't have any industrial machines. The one MF60 I did find was a MF60H and no good for my needs. There were some leads on everything I could find with 3 days of searching on Google. What I'm trying to find now is some horder who's got a ranch filled with older equipment and a horrible website / zero marketing and isn't making the list on the first 15-20 pages of a google search. In otherwords, I'm sorta grasping at straws currently.
With the age of machines as they get sold from one to the next to the next, the operators experience goes down and down and down. The prior owner might have had SOME experience in a loader, but clearly zero with a hoe. Not that -MY- experience is better. I have zero time in the seat of an industrial tractor, but at least am prepared to deal with machining parts if needed and it's not like I'll be running this thing 14 hours a day, day after day. This is for my personal use here on the ranch and it'll probably only get fired up 3-5 times a year. If that. There are certain things which having the loader would be invaluable (what I bought it for) and having the hoe will make a few of my dreams for work on the ranch possible... so that's why I opted for a tractor with a broken hoe swingframe. It's a bonus. If I can get it working, terrific. If not, well... I'll finish taking it off and put together a weldment later this year when business slows down in the late fall.
Fabrication of a new swing frame out of a weldment made for machined plate is plan B. For now, I'd like to find something OEM to replace it. I'm a machinist, who can also weld. I'm not a "welder" however. I'm confident I could do it, but I also know it would take a LOT of time and for now, I just want to throw a credit card at the problem and get an OEM part and swap it out while I'm also rebuilding all of the hydraulic cylinders and repairing or restoring other parts of the tractor while I'm at it. This needs enough work that if I can reduce it enough so that I have a functional backhoe sooner than later, it would make my life MUCH easier.