What the heck 8N with transmission problems

So I finally got around to messing with the 8N ford that has/had an input to output shaft bearing lock up. Got he backhoe unhooked and figured what the heck I'll see if it will pull it's self forward and away from the backhoe. I had to feather the clutch a bit and then all at once it would not move any more like it had been doing for a long time. Figured what the heck I'll put it in first and see if it will go. Sure enough it took off just like it is suppose to do. Not sure why all at once the input/output shaft bearing has freed up but it seem to have done so. So now it is one of those do I pull the loader off and split it or do I just take the transmission top cover off and have a look see as to what is going on. I'm leaning to the open it up and replace the bearing but to do so is a lot of work and it would be nice to have the back hoe right now to dig out the pond since it is mostly dry

Maybe your problem was as simple as frozen brakes. Low gear freed them.
Loren

I had an intermediate bearing on an old GM 3 speed lock up as I shifted into High gear I didn't know it happened till I went to shift to second (not good) it had to be taken apart to repair it. Jim

NO. This thing was such that to run it you had to have the clutch pedal blocked down or the rear wheel when you had the rear end lifted working the backhoe would spin up so fast that the whole rear of the machine would sort of bunch around. If you tried to put it in to any gear and let up on the clutch the engine would die. When this first happened I pull the top of the transmission and watch what was going on and the input shaft spun but the out[put shaft also spun at the same speed which is not suppose to happen in an 8N transmission. While the bearing was locked up it would try to pull it self forward when not in gear but it did not have the power to do so with the backhoe and loader on it. I had posted about this a month or so ago trying to figure out how I was going to go about getting it to my shop since it had the transmission problem

That is what gets me on this 8N. It does not have a direct drive set up but with the input to output shaft bearing locked up it tried to have a direct drive. I do know the transmission is way over full right now so maybe I got some water in it while it sat a few month and the oil floated up to and around the bearing so it has maybe soaked in oil for a while which maybe why it freed up but it sure would have been nice if it had done that before I took the backhoe off

Hi Old
Sometimes bearings can be a funny thing when they give problems, It could be something simple like it got a spot of rust in it and it bound up solid, now that rust spot has got oiled when the machine was used and it freed it's self . I've had bearings so tight a machine won't turn and smoke the belt but after removing them and playing with them in my hands they free off to.

I don't work on those tractors so have no idea what the trans is like, either you take it apart and see nothing as it's now not a fault, or it comes back as a random or permanent fault later. It's like a tractor a customer had it would blow start system fuses. I'd get a call go out put new fuses in. For an hour it would start every time and not blow fuses when I was there, then the guy would tow it or bump it on a hill to start it when the fuses blew again.

You couldn't see or find anything obvious as to why this happened a week later it blew all the fuses again. finally something else messed up in the starter and it had to come apart, We found the problem with the fuses. There was a screw on the brushes would vibrate in and out after the machine started, then ground on the case and blow the fuses. you could see the spark marks and the loose screw in the starter real easy when it was apart. I think thats possibly the kinda problem you have to try find now with a bearing or something else that messes up in the wrong spot sometimes.

Regards Robert

That's a tough decision.

IIRC, that is a roller bearing, the rollers running directly on the inside of the input shaft, directly on the outside of the main shaft.

Hard to believe rust would have been enough to seize it that bad and then let go. I suspect the cage failed, wedged under the rollers and welded it. Either way, most likely both shafts are now ruined.

So, if it still works... You could probably get away with running it the way it is.

But, if there is major slop in the bearing now, it will allow the main shaft mounted gears to move away from the counter shaft gears, stressing the teeth, possibly breaking a gear or causing further damage.

You might give it a try, see what happens. But I would keep my ears on it, if things start getting worse, time to go in.

I think but cannot be sure this started happening a few years back. I had it at a friend place doing some backhoe work for him and the transmission stated acting odd. I was close to finishing up any how so did and hauled it home. I parked it and did not get back to it till this past summer when I was using it to dig out a spring area in hopes of finding a bigger cave entrance. That is when the transmission seemed to go into direct drive. So it has been sitting say couple month with the top cover on but none of the blots very tight as in I could take them out with my fingers. Then today since it was nice out I figured I would mess with it and this is what happened. I do at least plan to back it into the shop and then pull the top cover off and at least have a look/feel see and then go form there