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Farmall & IHC Tractors Discussion Forum
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PTO Gear Removal Question - Farmall A, B, C tractors

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RTR

07-22-2020 19:10:59




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Im working on a PTO unit out of a Farmall C tractor and I think these are very similar to the Farmall A, B, Super A, 100, 140, 200, and 230 PTO units. How does this large gear come off? I removed the center bolt and thick spacer washer. Ive been pulling on it with this gear puller but it wont budge. Am I missing something?


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RTR

07-29-2020 18:00:20




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 Re: PTO Gear Removal Question - Farmall A, B, C tractor in reply to RTR, 07-22-2020 19:10:59  
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Ive put about 4 full pulls on it and it hasnt budged. Soaked in pb blaster overnight. Should I heat it with pressure on it?




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RTR

07-29-2020 13:49:28




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 Re: PTO Gear Removal Question - Farmall A, B, C tractor in reply to RTR, 07-22-2020 19:10:59  
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I put it in my press last night and left pressure on it overnight with some PB Blaster on it. I can't get it to budge



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560dennis

07-25-2020 17:57:43




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 Re: PTO Gear Removal Question - Farmall A, B, C tractors in reply to RTR, 07-22-2020 19:10:59  
I tried heat from torch. Yep mine was a beast. Three jaw nearly broached out the gear . Can you take it to somebody that has a hydraulic press?



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Davebn

07-23-2020 07:53:52




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 Re: PTO Gear Removal Question - Farmall A, B, C tractors in reply to RTR, 07-22-2020 19:10:59  
Those gears are very difficult to get off and they come off hard the whole way so clean what you can before you get it to move. Heat and patience are your only hope. I wouldn't be surprised if you break it before it moves. I use a spare bolt and drill a pilot in it for my puller.
Dave



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RTR

07-23-2020 07:37:52




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 Re: PTO Gear Removal Question - Farmall A, B, C tractor in reply to RTR, 07-22-2020 19:10:59  
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It was a working unit when removed. Ive got to have that hear for a part. Im sure it just needs heat I wanted to make sure I wasnt missing anything else before proceeding



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Ken Hansen

07-23-2020 07:27:42




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 Re: PTO Gear Removal Question - Farmall A, B, C tractor in reply to RTR, 07-22-2020 19:10:59  
I know it is tempting to use an impact on a puller like that but unless it is a puller specifically designed to be used with impact tools it will destroy the threads on the puller.

If that gear and shaft are the same as on the A and B tractors it should be a straight shaft with a key in it. I'd be looking close to see if the keyway in the gear are lined up with the key in shaft.

There is a chance that the key has failed and shaft turned in the gear causing things to bind up tight. I might try wedging some soft metal like copper or aluminum between the two gears and then try turning the PTO shaft with say a pipe wrench one way or another to see it that gets something to move.

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Janicholson

07-22-2020 19:43:40




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 Re: PTO Gear Removal Question - Farmall A, B, C tractors in reply to RTR, 07-22-2020 19:10:59  
It appears that it should come off the way you are doing it. I would add heat to the hub of the gear, no more than 400 degrees to prevent changing the heat treatment. Cooling the shaft also helps Jim

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