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Farmall & IHC Tractors Discussion Forum
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Differential Pinion Gear Adjustment

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Roger46

12-18-2005 19:23:17




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I am working on a Farmall Cub and had to replace the transmission case because the original one was broken. I am trying to get the ring and pinion gear adjusted per the service manual, because this case is slightly different than the original (I suppose just because of machining tolerences). I seem to be chasing my self as I have had the thing apart more than a dozen times trying to get the right backlash and get the gears to mesh at the right spot on the gear face. Does anyone have a good way to align these gears. I did it on my MD several years ago, but there I only had to realign the gears in one direction. Roger

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Janicholson

12-19-2005 08:28:48




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 Re: Differential Pinion Gear Adjustment in reply to Roger46, 12-18-2005 19:23:17  
Check below (transmission noise for a bit more info.
JimN



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Marv

12-18-2005 19:57:04




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 Re: Differential Pinion Gear Adjustment in reply to Roger46, 12-18-2005 19:23:17  
This can be a very challenging task. The gears in my SMTA were worn so I could not decide if the noise was coming from the wear pattern or the backlash adjustment. After trial and error, I set the tolerance at 30 thousands and got rid of most of the rear end noise. The manual recommends a closer setting. Good luck.



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the tractor vet

12-18-2005 19:45:21




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 Re: Differential Pinion Gear Adjustment in reply to Roger46, 12-18-2005 19:23:17  
If i have to switch cases i try and get one from one of my friends and get the shims that came out of it if i can and if not then ya got to start from begining and i get a shim kit and start micen and doing the set up Some red lead or white lead helps myself i like the red as i can see the pattern better the it is just a matter of getting the backlash set and yes you will have it apart several times . A mic and a depth mic and a dial indicator is a must have .

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Roger46

12-19-2005 18:01:46




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 Re: Differential Pinion Gear Adjustment in reply to the tractor vet, 12-18-2005 19:45:21  
I have been using a dial indicator and mic's. Where do you get red lead as that is what they recommend in the manual? That is one of my problems as I have been using a felt tip marker and that doesn't produce a very good mark when the teeth mesh. Roger



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