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Tractor Talk Discussion Forum

New 3 point arm end

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cj3b_jeep

04-17-2007 07:41:32




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One of the 3 point lift arms on my '64 David Brown is beginning to show it's age, the ball is nearly coming out of the socket. I've seen new ones at TSC and other places, two styles in fact, that can be welded on to replace it. One is just the socket and ball, the other is a socket, ball and small piece of arm. Has anyone ever done this job? Any advice on which one to go with?

One can be found here:
http://www2.northerntool.com/product-1/200315757.htm

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Janicholson

04-17-2007 18:43:22




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 Re: New 3 point arm end in reply to cj3b_jeep, 04-17-2007 07:41:32  
I've built/rebuilt several, Either way the preparation for the weld must be very well done.
The arm should be taken off (for flat weld position) and the old socket removed after marking for the needed cut. The cut should then be ground to match the new component.
I like the socket/ball better than the one with a piece of arm, for the reason that the bending moment (sorry for the high fallooten term) applied to the location of the weld will be far less when the weld is closer to the ball hole. This doesn't mean a poor weld is OK, it just means the weld will be under less stress. It will also be better looking. Groove the weld point to about 1/3 material thickness, make short passes (1"), and let it cool for three or more minutes between passes. Go for it. (I like E-7014) JimN

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Janicholson

04-17-2007 18:46:38




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 Added fact in reply to Janicholson, 04-17-2007 18:43:22  
I also own a CJ3b 1957 with IH K series truck cab spliced into the body for that controversial look. Appreciated by everyone except ones wife. JimN



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cj3b_jeep

04-19-2007 09:47:01




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 Re: Added fact in reply to Janicholson, 04-17-2007 18:46:38  
I think I've seen that truck on the cj3b page. My welder, a neighbor who is a welder/fabricator, wanted me to buy the kind with the little bit of arm on it, I liked the idea of just the ball socket, but he thought the other kind would easier to weld.



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souNdguy

04-17-2007 10:51:52




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 Re: New 3 point arm end in reply to cj3b_jeep, 04-17-2007 07:41:32  
The weld on ends work just fine.

For those of us that are cheak, we sometimes fimd a bit of scrap metal or really large washer and simply weld that over the ball to help hold it in. then grind to dress it up a bit.

Soundguy



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