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Driveshaft wobble


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#1 Tractor attractor 770 OFFLINE  

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Posted January 24, 2016 - 04:59 PM

So I was blowing snow today with the 1250 and I felt a vibration under the seat. Then the driveshaft starting to hit the steering column. I found the rear yoke loose! I pulled the trans and the driveshaft only to find the keyway messed up. I did have the engine out to replace motor mounts a little bit ago but I don't see how that affected the shaft. Anyone have this happen?

#2 WrenchinOnIt OFFLINE  

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Posted January 24, 2016 - 06:03 PM

http://gardentractor...bolens-1886-01/

Check out this post, your 1250 has the same Eaton pump in it, Rock Farmer did a nice repair, Ricks Bolens Tractors parts ( one of our sponsors ) had a good used pump, may contact him if the need arises.
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#3 Tractor attractor 770 OFFLINE  

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Posted January 24, 2016 - 08:48 PM

http://gardentractor...bolens-1886-01/

Check out this post, your 1250 has the same Eaton pump in it, Rock Farmer did a nice repair, Ricks Bolens Tractors parts ( one of our sponsors ) had a good used pump, may contact him if the need arises.



#4 Tractor attractor 770 OFFLINE  

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Posted January 24, 2016 - 08:51 PM

Thanks for the info. This 1250 was a $75 barn find so I'll keep going with it. I may try removing the front yoke bolt for now and see if that works

#5 blackjackjakexxix ONLINE  

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Posted January 24, 2016 - 10:07 PM

You remove that front bolt,you need to make sure it's on the input shaft tight,the driveshaft will move,inspect the input shaft before you do anything
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#6 blackjackjakexxix ONLINE  

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Posted January 24, 2016 - 10:08 PM

You remove that front bolt,you need to make sure it's on the input shaft tight,the driveshaft will move,inspect the input shaft on the hydro pump before you do anything,
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#7 Tractor attractor 770 OFFLINE  

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Posted January 25, 2016 - 01:54 PM

I thought about all of that today and I'm thinking about milling the engine mount plates to allow the engine to move closer to the transmission, making the driveshaft " adjustable"

#8 blackjackjakexxix ONLINE  

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Posted January 25, 2016 - 03:10 PM

If you move the engine back your going to have an issue with your pto belts lining up
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#9 Tractor attractor 770 OFFLINE  

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Posted January 25, 2016 - 03:29 PM

Yup you're right and that creates a whole lotta work. I guess I can either replace the input shaft and/or extend the driveshaft.

#10 Tractor attractor 770 OFFLINE  

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Posted January 25, 2016 - 04:10 PM

Just a thought- I have an '85 1668 I was going to break up for parts. According to tractor data it also uses an eaton 11 hydro. The case is different from the 1250. Would anyone know for sure if the input shafts are the same?

#11 ClassicBolens ONLINE  

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Posted January 25, 2016 - 06:02 PM

Just a thought- I have an '85 1668 I was going to break up for parts. According to tractor data it also uses an eaton 11 hydro. The case is different from the 1250. Would anyone know for sure if the input shafts are the same?


The 1250 has the Eaton 12, the 1668 has the Eaton 11. No parts will interchange between them.
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