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1948 John deere 'B'

D

David Oregon 97063

New User
I was hoping to get a diagnosis from someone experienced with older John Deeres. I had my daughter using a tiller on my field and she did great except for a certain patch where I can see she tilled too deep and had the tiller bouncing pretty good. Could tell by the furrowed dirt. It would die under load and when I got it going, there was a definite gear grinding noise in the transmission. It still drives and so I took the tiller back, dropped it off and drove the tractor into my shop...a total of maybe 200 yards. The PTO shift lever no longer disengages the pto, I can tell it spins free. I am assuming the main transmission is fine, but the woodruff key or some other part related to that shifter has sheared due to the jerking of the tiller. I am hoping that the "gear growling" is just that the pto is not fully engaged.

What do you think?
What would it take to fix. I have a manual and it seems I got some gear pulling to do.

thanks for any help
 
OK. I drained the case and 6 ball bearings and part of the bearing case dropped out. It seems this may be what's left of the bevel gear bearing...hoping.
Ran magnet through the fluid and only a minute bit of metal shaving was picked up....hopefully this is good......plugging on.
 

Something similar happened on our "51 A. We had to remove the rear rockshaft housing and replace the splined coupling in the PTO shaft.
 
The PTO bevel/drive gears are the first ones assembled when the transmission is put together. Meaning that everything else has to come out to get to them. It's not a terrible job , but ity does take awhile. Also a good time to check all the other gears, beasrings, shafts, & seals while you have it apart. Since you found pieces of bearing I wouldn't chance trying anything without a complete disassembly, too much chance of pieces gettingb into something else. That's what I found on my '44 B when I bought it(yes, I knew the PTO was bad).
 
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