Cat 657 with a big crack!!!

hey guys welcome back So today we're working on a 657 scraper one of the largest scrapers produced you can see this thing is massive my uh top of my head is right there so we've got a crack right there um I'll post uh pitcher I will post a picture I received and then I guess they had to run the machine so they just did a temporary weld over it to make a couple more days and I'm here to cut all that out and fix it with the best of my abilities I do think that the machine should be separated and the whole plate cut out and all that redone but we're just going to cut all that out and weld it back up so but for now we're gonna do what we can you can just see how massive this machine is it's very massive all right let's get to it all right we're on top of the machine see the scrapers out there working so that's what we got to deal with um I'll post a picture that I was sent in the mechanic put some weld on it try to run it a couple more days doesn't appear that it has failed again but we're gonna blow all this out and get it fixed up correctly um yeah I'll do these two bolts here probably lift these up out of the way with the crane should be able to get in there and get pretty much everything don't really have to worry about hard lines too much I just have to protect the cylinder all right we'll get these out of the way all right we've got our lines out of the way here I like to use wire just to kind of pull things up out of the way sometimes you have to use the crane in a strap to pull it if it's real heavy or paint being a pain in the butt I have drilled a hole right here and what I'm going to do is use as a starting point for my plasma we're gonna have to remove this and then we'll weld it back on and then we're just going to cut this whole all cut all these welds just cut all that out then we'll put a backing plate in there and then just weld it all up probably all I gotta see what it looks like but we'll probably cut up to here and then we might like gouge and weld that up I'm not sure we'll see what it looks like when I get deeper in there this should be about an inch I don't know inch inch and a half thick right here so the plasma out and start cutting foreign [Music] foreign foreign foreign foreign we got that cut out you can see I mean that's a big big cut stick my hand inside there now the reason the whole reason we're cutting this out see all those bubbles and whatnot in there that's all porosity and Imperfections from all the previous welding and the patch jobs and whatever and that is what you want to get out of there because it's not done correctly so I'm gonna slowly carve away at this at the plasma until I feel like it's back into good material and then I might bevel this a little bit it probably doesn't need a bevel because there's such a huge gap um and then we're we'll clean the back side get a backing plate in there start burning this sucker out probably take at least a couple hours to weld this I mean that's a decent sized crack um and then we gotta check right here it's pretty common they crack along those the lugs they weld on there to hold the the lines and stuff so yeah we'll just we'll cut away at this until all that porosity disappears all right got it cleaned up I don't see any more porosity we're gonna get it cleaned up and then we'll see what it looks like thank you foreign plates in there all right here's the first pass root pass or whatever everybody likes to see the first pass there she is all right let's uh burn a sucker out foreign [Music] foreign we're about 30 minutes in [Music] something kind of cool I mean this is essentially California desert freaking snow over there and then uh over there on those mountains you kind of can't barely see them um that's the Grapevine let's get back at it here foreign we're getting there almost got it all right not a whole lot left battery's gonna die I'm fun so I'm gonna we'll get that welded up then I'll I'll bring you back all right that's pretty close um I'm gonna have to run a couple short beads right there but as far as the long beads that's that's as much as I can get so I'll probably start sanding it down and fill in the low spots and make it look like it would never happen all right got her all Blended in we'll shoot some paint on there it's still just a little bit too hot for paint you shoot it shoot the cat paint on there too soon it'll turn more of an orange color kind of like a case yellow so hold that cool down pull our tools away and then uh come back and paint that looks pretty good kind of hard to get right there um I used a 3M cubatron disc to blend all that so those are available in my Amazon store if you guys are interested in trying them out they work fantastic [Music] foreign [Music] [Music] foreign until they break her next time should be looking good are these lines on here now there you go all back together just like that as soon as she's done right back into service [Applause] all right well that's it for this video thank you for watching stay tuned for the next one

Channel: On Fire Welding

Views: 1,169,153

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Id: iHJmxZRDONk

Length: 18min 17sec (1097 seconds)

Published: Mon Mar 20 2023