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Restoration & Repair Tips Board

to Weld or not to Weld, that is the Question

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shawn01754

12-11-2006 14:27:54




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I have some chipped teeth on my moline big mo 500 flywheel.Can I weld and file these chipped areas to match the other teeth?(to eliminate splitting tractor) If so what rod do i want? Is there any major saftey or mechanical factors (fire ect)? thanks Shawn




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Stumpalump

12-20-2006 18:02:40




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 Re: to Weld or not to Weld, that is the Question in reply to shawn01754, 12-11-2006 14:27:54  
Google esbana university, then oxy handbook, then hard surface rebuilding. They show you how to do just that. I just bought my first real torch setup yesterday and have been studying up.
I ran across this and remembered your post. Good luck.



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michael price

12-12-2006 19:34:52




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 Re: to Weld or not to Weld, that is the Question in reply to shawn01754, 12-11-2006 14:27:54  
If you do weld it use a hard rod, 7018 I think would be good enough. Make sure its clean so you get good penetration.



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Greasey Hand

04-09-2007 14:26:08




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 Re: to Weld or not to Weld, that is the Question in reply to michael price, 12-12-2006 19:34:52  
7018 is not a hard rod.



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msb

12-11-2006 21:39:45




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 Re: to Weld or not to Weld, that is the Question in reply to shawn01754, 12-11-2006 14:27:54  
Split the tractor , put some heat on the ring gear.Take it off and give it a quarter turn after putting in your wife's oven at 500 degrees for an hour.Then it will fall right in place and will tighten back up when it cools.4 cylinder engines always stop in one of two places.6 cylinder engines-- one of three places due to the compression. Welding on the teeth is not a good option in my opinion.



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glennster

12-12-2006 10:08:37




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 Re: to Weld or not to Weld, that is the Question in reply to msb, 12-11-2006 21:39:45  
couldnt you just flip the ring gear over and use the backside? i have done that on the farmall tractors. if the gear is the same on both sides, that should work.



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msb

12-12-2006 20:07:46




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 Re: to Weld or not to Weld, that is the Question in reply to glennster, 12-12-2006 10:08:37  
Depends on how the teeth are finished on the ring.Most of the time, yes.



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Weldin man

12-11-2006 14:45:33




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 Re: to Weld or not to Weld, that is the Question in reply to shawn01754, 12-11-2006 14:27:54  
I don't know much about the tractor you are talking about or how big the teeth are on the ring gear, but I would say it would be a very difficult task. I have made a lot of gear teeth on various equipment over the years and to get a good job you have to be able to have good access to the teeth to get them worked back down to the right profile after welding. If You do try I would use Super Missle Weld. it is Imperative that you hook your ground clamp to the flywheel and not the tractor or you will trash your crankshaft and Bearings. Good Luck.

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shawn01754

12-11-2006 18:58:19




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 Re: to Weld or not to Weld, that is the Question in reply to Weldin man , 12-11-2006 14:45:33  
Wow, great points, thanks for your advise



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