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Tractor Talk Discussion Forum

Welding upside down?!?

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dds-inc

05-26-2007 18:26:03




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My JD 48 loader has a crack in it underneath the main frame rail which is made of formed 3/16" steel. It opens up when lifting a load, so this needs to be fixed ASAP.

I was wondering if it's possible to weld underneath something?? I would have the loader off, and I would also need to weld a flat 1/4" plate for reinforcement. My guess is that it's going to be deathly hard to do unless I flop the loader over somehow!!

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Jerry/MT

05-27-2007 14:07:59




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 Re: Welding upside down?!? in reply to dds-inc, 05-26-2007 18:26:03  
Respectfully, if you have to ask that question, you probably ought to have a pro do it for you.



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Funny Guy

05-27-2007 06:29:12




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 Re: Welding upside down?!? in reply to dds-inc, 05-26-2007 18:26:03  
Any time I weld upside down, my face gets red and my eyes bug out and I get a real headache. Something to do with the blood staying inside my skull. I prefer to weld upright myself.



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Kevin (FL)

05-27-2007 05:12:47




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 Re: Welding upside down?!? in reply to dds-inc, 05-26-2007 18:26:03  
Please don't take offense to my advice but if you have to ask whether something can be welded overhead, I wouldn't advise that you perform the welding--especially on a highly stressed part on a loader frame. Find a local pro to do the job and you'll be better off. I learned to weld in the shipyards about 30 years ago and I still don't consider myself a "welder". Yes I know how to weld all positions but when you do it for a living, the on-the-job training makes for a quality weld. When I found a crack on my gooseneck stinger, I hired a local welder to do the job.

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Oldcraneguy

05-27-2007 05:09:47




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 Re: Welding upside down?!? in reply to dds-inc, 05-26-2007 18:26:03  
Any decent welder can run overhead just fine, heck I can even lay a passable bead, its vertical thats more difficult, mine usually hold ok but theyre not what you would call a "roll-o-dimes".lol...prep it good and get your heat right so you dont blow big holes and give it a try...good luck.



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gene bender

05-26-2007 20:22:41




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 Re: Welding upside down?!? in reply to dds-inc, 05-26-2007 18:26:03  
take the loader off turn it upside down so you can do it rite the best way to weld it without taking off would be to use a mig welder but just take it off turn over then you can use what you have and do a better job



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Davis In SC

05-26-2007 20:03:35




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 Re: Welding upside down?!? in reply to dds-inc, 05-26-2007 18:26:03  
Anytime you are overhead welding, wear ear plugs. A ball of hot slag can roll down your ear canal and do a lot of damage, even destroying an eardrum..



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David Snipes

05-28-2007 07:30:37




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 Re: Welding upside down?!? in reply to Davis In SC, 05-26-2007 20:03:35  
I second that; years ago I had an eardrum punctured by a small bit of hot slag. Fortunatly it didn't cause me any problems and the drum healed.



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135 Fan

05-26-2007 22:53:15




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 Re: Welding upside down?!? in reply to Davis In SC, 05-26-2007 20:03:35  
That's one of the reasons welders wear the funny backwards caps. The brim is angled and can be turned to cover the ear or back of the neck. Ear plugs are a good idea for overhead welding or anytime there could be a lot of sparks or slag flying around from grinding or welding. Dave



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Howard H.

05-26-2007 19:47:26




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 Re: Welding upside down?!? in reply to dds-inc, 05-26-2007 18:26:03  

I"m no pro welder, but most things I"ve welded have held just fine. I"ve used 6011 rod quite a lot for overhead welding and it has worked fine - you may have to play with the heat settings since that is much more critical.

I like to wear my leather jacket, brace up under the structure where I can see very well, but am not under the main drop of the spatter and brace where you can control the rod very precisely. A shorter arc will be easier to control. As with any welding, grind out the crack first, especially if it is dirty around it.

Howard

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Gary from Muleshoe

05-26-2007 19:05:20




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 Re: Welding upside down?!? in reply to dds-inc, 05-26-2007 18:26:03  
Welding upside down can be done but it is tricky. When you weld upside down you have to keep constant heat while you go in and out with the rod to keep from dripping. If you are inexperienced like me it is better to flip it over if you can. If that isn't possible I would suggest getting an experienced welder to it for you.



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135 Fan

05-26-2007 22:47:50




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 Overhead Welding in reply to Gary from Muleshoe, 05-26-2007 19:05:20  
That's very good advice. Actually welding upside down would be tricky with all the blood rushing to your head. Overhead welding still takes some practice but is done all the time when pieces can't be flipped over. Pipelines are one example. If you can take it off and flip it so the weld could be done in the flat position would be a lot easier. Being that it's a stressed component 7018 would be the rod of choice with perhaps a 6011 or 6010 root pass (first pass to fill the V groove you ground out). After it's welded you could grind the weld flat and put a strengthening plate over the repair. Hope this helps. Dave

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