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John Deere Tractors Discussion Forum
:

Siezed bolt on 1939 John Deere B clutch lever

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DaveJD

01-24-2021 18:21:48




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Hi All,

My Dad left me a 1939 B that he didn't get finished. One issue is the clutch lever was loose from wear but the bolt is seized in the frame of the tractor. I've tried to press it out with a little rig but nothing. I don't want to hit it for fear of cracking the casting. Any advice? I can send pictures. Thank you!




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PJH

01-26-2021 07:32:43




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 Re: Siezed bolt on 1939 John Deere B clutch lever in reply to DaveJD, 01-24-2021 18:21:48  
I don't know about the 1939 B, but the newer tractors also have a clutch lever bushing that can be replaced. A new bolt and a new bushing together will make it like new again. Then there are the oversized pins for the operating rod that will help some more.

I'll bet you already knew this, but I'm throwing it out there just in case you didn't.
As they say - while you've got it apart. . .



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sds46a

01-26-2021 05:45:09




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 Re: Siezed bolt on 1939 John Deere B clutch lever in reply to DaveJD, 01-24-2021 18:21:48  

Steiner has a new bolt once you get it out.



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Blksmok

01-25-2021 03:32:42




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 Re: Siezed bolt on 1939 John Deere B clutch lever in reply to DaveJD, 01-24-2021 18:21:48  
Here's what I do. May or may not work for you. Heat the casting around the pivot bolt for 15 - 20 minutes with MAPP gas. While it is still warm, spray it with JB Blaster. Let it cool. Put a good pipe wrench on the head of the pivot bolt and try to get the bolt to rotate inside the casting. Once you have rotational movement you can usually get the bolt to move horizontally.



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matthies

01-25-2021 05:40:54




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 Re: Siezed bolt on 1939 John Deere B clutch lever in reply to Blksmok, 01-25-2021 03:32:42  
That bolt is lightly splined, can't see it rotating much.



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Blksmok

01-25-2021 07:39:44




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 Re: Siezed bolt on 1939 John Deere B clutch lever in reply to matthies, 01-25-2021 05:40:54  
Splines are very small and no match for the leverage of a good pipe wrench.



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DaveJD

01-25-2021 03:32:23




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 Re: Siezed bolt on 1939 John Deere B clutch lever in reply to DaveJD, 01-24-2021 18:21:48  
Quoting Removed, click Modern View to see

Thank you Ron and Dan! This is perfect - I've ordered the tool. Thanks again.



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dan_41jdh

01-24-2021 19:20:23




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 Re: Siezed bolt on 1939 John Deere B clutch lever in reply to DaveJD, 01-24-2021 18:21:48  
Sundahl's makes a C-framed pressing tool for that task.



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Resting Relics 1

01-25-2021 07:57:32




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 Re: Siezed bolt on 1939 John Deere B clutch lever in reply to dan_41jdh, 01-24-2021 19:20:23  
Agreed, I have used that tool many times. Hasn't let me down yet. I suppose if it was really tight one could always heat it a little then I'm positive it would come out.
John



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55 50 Ron

01-24-2021 19:28:45




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 Re: Siezed bolt on 1939 John Deere B clutch lever in reply to dan_41jdh, 01-24-2021 19:20:23  
That is the way to go. Thanks Dan. I had forgotten about the Sunsdahls and that tool.



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55 50 Ron

01-24-2021 19:11:05




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 Re: Siezed bolt on 1939 John Deere B clutch lever in reply to DaveJD, 01-24-2021 18:21:48  
It should come out with a press. Show a picture of your "little rig" so we can tell if it's strong enough to do the press. It will take a very strong fixture (rig) and maybe some penetrant to finally get it out. I did that on my model 50 some years ago and it had a tapered spline on that bolt and took lots of pressure from the rig to break it loose. I suspect the B has the same tapered bolt.

You are correct to not hammer on it because that can break the casting the bolt fits into.

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