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Massey Harris & Massey Ferguson Tractors Discussion Forum
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202 loader frame cracking

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gregmmmm

10-09-2006 03:43:05




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have a massey 202, and the loader is just starting to crack along the bottom front of the thick cross memeber as it mets the loader arms. the cracks are about 1 inch and only noticed becuase the paint cracked there. I can weld no problems just know these cracked a lot and maybe someone knows the best way to fix this so it will last.




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used to be Iowa Dave

10-10-2006 12:09:44




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 Re: 202 loader frame cracking in reply to gregmmmm, 10-09-2006 03:43:05  
I have the manual for that loader at home, seems to me there was a section in it that specified materials/procedures for welding repairs. I'll look tonight.



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greg mm

10-10-2006 13:56:11




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 Re: 202 loader frame cracking in reply to used to be Iowa Dave, 10-10-2006 12:09:44  
ok thanks



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135 Fan

10-09-2006 20:15:28




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 Re: 202 loader frame cracking in reply to gregmmmm, 10-09-2006 03:43:05  
Just wanted to mention that if a fish plate wouldn't work, you could put triangular gussets in the corners which would add a lot of strength. Good Luck Dave



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135 Fan

10-09-2006 20:09:28




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 Re: 202 loader frame cracking in reply to gregmmmm, 10-09-2006 03:43:05  
I have never heard of crack arrestor holes except in plastic or cast aluminum. Do like David P said so you can get as much penetration as possible. Grind a little past the crack. Make sure to clean all around the area to be welded and use low hydrogen electrodes [7018] for maximum strength. 6013 or 7014 electrodes are not suitable. If there is room, you could repair the crack, grind it flat and weld a fish plate over it. IE: A piece of 1/4 flat bar that is put over the repair and welded on both sides of the repair. This would be an easy job for an experienced welder but could crack again if not done properly. Hope this helps, welder Dave

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greg mmm

10-10-2006 08:47:17




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 Re: 202 loader frame cracking in reply to 135 Fan, 10-09-2006 20:09:28  
is there a low hydrogen wire for mig welders that would work??



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135 Fan

10-10-2006 10:15:57




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 Re: 202 loader frame cracking in reply to greg mmm, 10-10-2006 08:47:17  
Mig welding is similar to low hydrogen when used with a shielding gas. Don't use self shielding flux core wire that doesn't use CO2 or Argon CO2 shielding gas. Stick welding is stronger though. If Mig welding isn't done properly it is very common to have cold lap or lack of fusion where the weld doesn't penetrate fully in to the base metal. Cold starts are common because it takes a half a second for the puddle to get hot enough for complete fusion. That said Mig welding would still work. It is even more imperative to make sure you have nice clean steel to prevent porosity. Start your weld a little before your V you ground out and weave the puddle back and forth slowly as you weld watching to make sure the edges fuse. Set your welder to burn a little hotter. It's ok if you have to use a couple passes. Just grind a little in between them to make sure they are clean. If you add gussets you shouldn't have any more problems. Good luck. Dave

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greg mmm

10-11-2006 09:25:42




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 Re: 202 loader frame cracking in reply to 135 Fan, 10-10-2006 10:15:57  
so when it comes to fixxing cracks and breaks on heavy equipment the prefered weld method is stick and the rod is 7018?

I am just a back yard welder, but always looking to do things better. for me the 7018 was hard to weld with, always going out, tried different amp settings.



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135 Fan

10-11-2006 09:56:42




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 Re: 202 loader frame cracking in reply to greg mmm, 10-11-2006 09:25:42  
It sounds like you just have an AC welder. You can buy special AC 7018 rods. They are quite common now and are easier to strike and hold an arc. Yes 7018 are the strongest rods to use when you want maximum strength. There are stronger rods but you only need them for special applications. 7018 is used for welding pressure vessels and piping. They are good for cold weather strength as well. Most shops keep them in a rod oven. You don't need an oven but make sure to keep them dry. If they get any moisture in the coating it will weaken the weld and probably cause porosity. If you need to weld something and aren't sure what rod to use, use 7018 if it's steel. They are good for hard to weld steels. They are much easier to use with a DC welder on reverse polarity but will work with a buzz box [AC]. Happy welding. Dave

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John Wood

10-09-2006 06:06:17




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 Re: 202 loader frame cracking in reply to gregmmmm, 10-09-2006 03:43:05  
As you are probably aware crack arrestor holes are usually drilled at the end of the cracks to prevent the cracks travelling any further.Then fill in the holes (weld) and weld the prepared cracks up as previously mentioned.

HTH

J



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DavidP, South Wales

10-09-2006 04:57:37




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 Re: 202 loader frame cracking in reply to gregmmmm, 10-09-2006 03:43:05  
If the cracks are accessible, make sure you 'V' them out fully with an angle grinder and weld up with a small over-weld out onto the parent metal.
DavidP



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