WE HAVE THIS OLD MODEL H THAT HAS DEVELOPED A 3 INCH CRACK IN THE BOTTOM OF DIFFERENTIAL HOUSING AS A RESULT OF FREEZING WATER IN THE CASE. WE CAN NOT SEEM TO FIND ANYONE WHO IS WILLING TO TRY TO WELD THIS. ARE THERE ANY ADDITIVE PRODUCTS WE MIGHT TRY TO STOP THIS LEAK? THE LEAK IS VERY SLIGHT. ANY ADVICE WOULD BE APPRECIATED. THANKS.
- Thread starter VOLIN
- Start date
You'll have to drain the case, and clean out the area around the crack regardless of what you do. If you weld it or not, take a small diameter drill bit and drill a hole all the way through the case at each end of the crack to keep it from running. Then V it out the length of the crack. From there, JB weld, Devcon, or some other brand of two part epoxy should take care of the problem. I've fixed a couple of cracked water jackets this way, and if it will work on that, it shouldn't have any problem working in your situation too.
Find a machine shop that will drill, tap and plug the cracks. They start at one end of the crack and then half lap the next plug until they get to the other end of the crack. We had our JD block repaired that way when a sand hold opened up in one cylinder; it's held for 65 years now. May be able to just take the tractor to them and they will repair the crack without taking the tractor all apart.
Steve@Advance
Well-known Member
I'll second the JB Weld.
V it out and clean,clean, clean! Spray carb or brake cleaner and compressed air to push the grease away. If it's exactly on bottom. as in the lowest point of the case, going to have to get it up somehow, either tip the tractor on it's side or raise the rear so the draining oil doesn't continue to seep through the crack. It could take months for all the oil to stop dripping.
Since this was an unusual event, the freezing water, there will normally be no stress or pressure there, epoxy will probably be better than brazing or welding. At least if I tried it would be!
V it out and clean,clean, clean! Spray carb or brake cleaner and compressed air to push the grease away. If it's exactly on bottom. as in the lowest point of the case, going to have to get it up somehow, either tip the tractor on it's side or raise the rear so the draining oil doesn't continue to seep through the crack. It could take months for all the oil to stop dripping.
Since this was an unusual event, the freezing water, there will normally be no stress or pressure there, epoxy will probably be better than brazing or welding. At least if I tried it would be!
Are you sure its freezing water and not a bad bearing. Dads H did the same thing-- a bearing had come apart, parts had gotten between the case and a gear and cracked the case. There is not enough room between the gear and case for the bearing pieces to pass. The guy dad took it to said it was not uncommon for it to happen. This was in the early 1960's. The H was traded off for a new tractor and mounted picker. On the ones he fixed the guy would strip the transmission apart and weld them from the inside, along with replacing damaged gears.
jon f mn
Well-known Member
Napa sells a 2 part epoxy that is used to patch has tanks. It can be applied while it's still leaking. I've used it and it works. Jeff just used it to deal a leak in the oil reservoir on his haybine. I would use that before jb weld. You just smear it on the bottom over the leak. The only negative is you can see it.
An old guy on the milk route had an M that he bought at Archbold. He backed that out of the toolshed one morning then started ahead with it. He had a huge streak of oil behind him by the time he got to the barn. The PTO shaft had been broken off in it at some point and they put a different one in. The front part of it laid up in the front of the rear end evidently and when he started ahead that morning,it rolled off and under the bull gear. Punched a huge hole in the bottom.
teddy52food
Well-known Member
Back in my younger days, I brazed up more than one of them. Aren't there any welders left?
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