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Harry Ferguson Tractors Discussion Forum
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Furnace brazing

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albert b

11-26-2005 14:29:16




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In Furnace Brazing do you treat it the same as regular Brazing rod or is it a different process, Thanks Albert.....




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Paul in AZ

12-01-2005 12:39:18




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 Re: Furnace brazing in reply to albert b, 11-26-2005 14:29:16  
Mac Tractor Parts (1-800-882-4742) has sold these oven-baked blocks for many years. They sell them for exchange or outright. My understanding is that these refurbished blocks give excellent service. Ask for Johnny or Danny.



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Matt L

11-30-2005 21:44:32




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 Re: Furnace brazing in reply to albert b, 11-26-2005 14:29:16  
Im gonna braze my ferguson head monday- should turn out good. Id tig weld it but Id have to send it out to be remachined.



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Jerry/MT

11-27-2005 21:00:57




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 Re: Furnace brazing in reply to albert b, 11-26-2005 14:29:16  
It's a totally different process and was developed for the aerospace industry. I don't know all the details but maybe someone more knowlwdgable about it than I will reply. Regarding block repair, the block is cleaned the cracks are somehow packed with a powered brazing/flux material than placed in an oven. The powered material melts and is draw in to the cracks. There is an added benefit in the the casting is stress relieved by the process. The block is then re-machined and reassembled. I put a remanufactured short block in my '54 TO-30 in 2001 that used this process and I have had no problems with it. Mine is not a show machine. Its a working machine on my ranch. Somebody reported finding a remanufactured block for about $650 just a few weeks ago in this forum.

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albert b

11-28-2005 04:12:19




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 Re: Furnace brazing in reply to Jerry/MT, 11-27-2005 21:00:57  
Jerry,Thanks...That pretty well explains it,,,I wonder if the shop mechanic could go through that process using a small gas brazing torch? Might be able to give it a try if the brazing solution doesn't cost that muck,,,,thanks again,,,,, Albert



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Jerry/MT

11-29-2005 13:40:17




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 Re: Furnace brazing in reply to albert b, 11-28-2005 04:12:19  
You'll have to talk to someone more knowledgable about brazing than I am to answer that question.I have seen pictures in this forum of someone's repair of a rear axle bearing housing using torch brazing so I'm sure it can be done by someone wth experience. Whether it really holds up I couldn't say.



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gerard

11-28-2005 09:19:18




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 Re: Furnace brazing in reply to albert b, 11-28-2005 04:12:19  
"fraid you can"t do it with any kind of torch - such a repair would crack as soon as it cooled. Whole block needs to be taken up to red heat (and then controlled cooled).



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