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Ford 841 Transmission Output Shaft


 
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KCTractors
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Joined: 16 Nov 2003
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PostPosted: Thu Oct 18, 2018 5:03 pm    Post subject: Ford 841 Transmission Output Shaft Reply to specific post Reply with quote

I am replacing a 4 speed transmission with the Sherman combination on a 821 with a loader and backhoe. I located a 4 speed from a 841 and was all set to set the transmission in place, that is when I noticed that the out-put shaft on the replacement transmission has 23 splines and the old one has ten splines. So off to a bone-yard I go. They said they never seen that on a 4 speed.
They did have a coupling from a SOS that had 23 splines, so I bought that at $125. I took the two pieces to a Machine Shop and for another $150, they will join the two together to make it 23 spline on one end and 10 spline on the other. I guess that should work. I told them that shaft had to run true and there was no room for error. I did not know that there is different splines on different 4 speed transmissions on 601 or 801 series tractors.
 
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JWA
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PostPosted: Thu Oct 18, 2018 5:16 pm    Post subject: Re: Ford 841 Transmission Output Shaft Reply to specific post Reply with quote

My 841 has the fine splined input shaft. Didn't realize there were different splined shafts until I got home with the wrong clutch.
 
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Larry NCKS
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Location: Washington, KS/Lincoln, NE

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PostPosted: Thu Oct 18, 2018 6:21 pm    Post subject: Re: Ford 841 Transmission Output Shaft Reply to specific post Reply with quote


Didn't know about the input shaft change, but the output shaft was changed somewhere in the production run of the '01 series.
 
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Sean in PA
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Location: Southeast PA

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PostPosted: Fri Oct 19, 2018 2:31 am    Post subject: Re: Ford 841 Transmission Output Shaft Reply to specific post Reply with quote

Is the output shaft still good in your original trans? Why not swap that over to the new trans?
 
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Kirk-NJ
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PostPosted: Fri Oct 19, 2018 2:37 am    Post subject: Re: Ford 841 Transmission Output Shaft Reply to specific post Reply with quote

Output shaft changed at serial #54166 X01 series.
 
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KCTractors
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PostPosted: Fri Oct 19, 2018 5:06 pm    Post subject: Re: Ford 841 Transmission Output Shaft Reply to specific post Reply with quote

Thanks everybody, especially Kirk-NJ. You hit the nail on the head. The replacement transmission is 99000 something and the one I took out was 44000 something.I learned something this week! I got the drive-line back this afternoon. Looks like the machine shop did a good job.
 
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