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H tranny problems

H

hvacpro85

Member
I drained the trans. fluid from the H. I stuck a magnet in the drain port and pulled out 2 pieces of what appears to be a ball bearing. Would have been about 1/2" round. The tractor shifts/ runs out fine in all the gears.

Any ideas on where this would have busted off from? (1942 Farmall H)

Thanks in advance -Steve
 
Most likely an axle bearing but also possibly from a bull pinion or carrier. Could be left over pieces from a failure that was field repaired. I have found stuff like that before while cleaning out rear cases.

I don't know for sure on an H but on an M you can change axle bearings through the PTO opening. Not something you want to have do but can be done.

Are the pieces shiny or dark? If they are dark, especially the fracture itself, then they have been in there a while and probably left over. If they are shiny and the fracture looks clean and bright then, you may want to at least check your axle bearings in case you have one that's starting to go.
 
I think the bearings on the pinion shafts coughed up most of them on my H. It ran and worked fine. A leaky grease seal lead me to a wobbly pinion shaft... The gears are very tough, one of the bull gears has the impression of a ball in the face of one of the teeth.

If you dig into the transmission be sure to measure the clearance in the differential so you can set it back to where it was. Otherwise it will take several years for the gears to quiet down.

Greg
 
They do look clean and shiny. I will add the rear tire sizes are different mabey the root cause of the problem? Is it easier to pull the big top plate off to get at everything?
 
(quoted from post at 20:30:39 12/01/11) They do look clean and shiny. I will add the rear tire sizes are different mabey the root cause of the problem? Is it easier to pull the big top plate off to get at everything?
Click to expand...

It is a time consuming, but easy thing to take the rear cover off. Going through the pto opening will save you time if you are lucky.

I think it is an axle bearing. Jack it up and spin the tires. You might hear the bearings clicking.

Different tires sizes aren't a major problem. It is no different than turning.
 
Ok so when I remove the pto shaft, What am i looking for? on the parts breakdown pics it looks like the axle bearing has a cover?
 
The difference in tire size doesn't matter, the bearings just wear out over time. Maybe your H spent some time under a corn picker or did some other heavy work. Who knows.

It is most definately easier to fix with the top plate off and it's not that hard to do. That will also allow you to clean everything out real well.
That cover is heavy though. Two people could handle it, but I find that a cherry picker is much easier if you have one! You'll be able to check everything in the rear and transmission. When going back, I use RTV to seal the cover back on.
 
Forgot to add that sometimes the parts diagrams make things look more complicated than they are. The transmission and rear are really quite simple and once you have the cover off and the oil drained you can easily see how things go together.
 
(quoted from post at 20:57:50 12/01/11) Ok so when I remove the pto shaft, What am i looking for? on the parts breakdown pics it looks like the axle bearing has a cover?
Click to expand...

You won't be able to see anything if you are doing it through the pto hole. It is all going to be by feel.
 
If you're going to pull the top cover, I'd first drain the tranny, pour in a gallons of diesel and drive it down the road and back (slowly, and paying close attention ot tranny sounds.. you may have a problem in there and flushing out the oil might make it more apparent)
Cleaning the tranny out first makes it MUCH nice to work on..
 
If you haven't replaced the seals it's probably going to leak out. Mine did just sitting. The gear oil ran out on the floor.
Put in new seals and new lube. Tranny was still very noisy. Tore it all the way down and replaced all bearings, seals, cleaned and greased the shifter. Very nice now. Quiet, shifts good and doesn't leak. But, I took the long way around.
 
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