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Heating a JD needle to straighten


 
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david1
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PostPosted: Mon Nov 11, 2013 3:22 pm    Post subject: Heating a JD needle to straighten Reply to specific post Reply with quote

I have a 14 T needle that's bent badly. Not sure why it did not break. I figure if I try to straighten it cold its bound to break. Not sure if they are cast , steel, or iron. Would it be best to heat it up and then bury it in a bucket of ashes to let it cool slowly , like maybe to anneal it or release the stress and then bend it back into shape cold. Or can I beat it up like dull cherry red in the forge and bend it. Thanks
 
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Lyle Noland
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PostPosted: Mon Nov 11, 2013 6:13 pm    Post subject: Re: Heating a JD needle to straighten Reply to specific post Reply with quote

best luck I have had is to do it cold no kinks then put in press and not take all the way do it in a press and leave there giveing a little over couple of days
 
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ArleninOr
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PostPosted: Mon Nov 11, 2013 8:53 pm    Post subject: Re: Heating a JD needle to straighten Reply to specific post Reply with quote

David, check the plunger and the plunger pin. The pin could be trying to walk out. Have seen it happen on a lot of JD balers.
 
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Bob
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PostPosted: Mon Nov 11, 2013 10:00 pm    Post subject: Re: Heating a JD needle to straighten Reply to specific post Reply with quote

They are cast steel or nodular iron, or whatever, but NOT cast iron. Heat 'em up, and straighten, and NO need for slow cooling.
 
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Dick2
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PostPosted: Tue Nov 12, 2013 12:19 am    Post subject: Re: Heating a JD needle to straighten Reply to specific post Reply with quote

The needles on our 14T were made of maleable iron, designed to be straightened cold in a press. That was their primary means to adjust the needles for the required clearances.

We used a new needle for a pattern and straightened used needles to follow the same contour - no need to heat them.
 
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Tx Jim
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PostPosted: Tue Nov 12, 2013 3:38 am    Post subject: Re: Heating a JD needle to straighten Reply to specific post Reply with quote

Dick2 wrote:
(quoted from post at 03:19:56 11/12/13) designed to be straightened cold in a press. That was their primary means to adjust the needles for the required clearances.


Dick2
When ever I repair a sq baler that has needle adjustment problems I use the 2 bots and slots in needle frame to change needle to knotter relationship. I've never read in baler manual where it stated bend needles to align with knotters.
 


Last edited by Tx Jim on Tue Nov 12, 2013 3:40 am; edited 1 time in total
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Dick2
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PostPosted: Tue Nov 12, 2013 5:29 am    Post subject: Re: Heating a JD needle to straighten Reply to specific post Reply with quote

The slots provided where the needles bolted could only accomplish certain adjustments.

My Dad was an old binder man so he recognized that the needles were made with maleable iron the same as on the old binders. Bending the needles accomplished the job of "fine tuning" where the needles had to travel to get the twine to the right place on the knotters (which are also basically the same as on a binder).
 
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Tx Jim
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PostPosted: Tue Nov 12, 2013 6:40 am    Post subject: Re: Heating a JD needle to straighten Reply to specific post Reply with quote

Dick2 wrote:
(quoted from post at 08:29:55 11/12/13) The slots provided where the needles bolted could only accomplish certain adjustments..


If needles can't be adjusted correctly without bending then the needle frame is bent.
 
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randy hall
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PostPosted: Tue Nov 12, 2013 12:49 pm    Post subject: Re: Heating a JD needle to straighten Reply to specific post Reply with quote

malleable cast iron. you can bend them back into shape cold.
 
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