Kobelco loader arm part 1

hey guys welcome back well let's see can I fix this yeah sure I fix it let take a little bit of time a little bit of thought process it doesn't appear that any of the metal itself is cracked a little bit of paint chipping away doesn't appear there's any cracks so we are going to both ears are bent this one obviously a lot worse um going to put it in this press here this is my scrapyard press found this at the scrapyard someone was scrapping it and they just gave it to me I didn't have these plates on it so I put these plates on here so I can kind of set it up how I want so we're going to set it up in here we're going to use 100 ton RAM and we're going to try to just start squeezing it and then what we're going to do is we're going to clean all this paint off and we're going to heat this whole area and get that nice and relaxed before we start pressing on it so hopefully um hopefully there's no cracks but after we get it pressed back to where I think it should be we will uh clean it really good and then uh do a a d penetrant test you can see that bottom ears just Twisted out a little bit but this will be fun all right let's uh let's get to it um we have the new PIN here we're going to be making the pin the old pin actually snapped in half um looks like there's another hold down issue I'm assuming the bolt broke off same thing that always happens bolt breaks they try to weld it that breaks immediately and yeah well yeah so don't neglect your equipment this is what happens all right well let's we're going to figure out how to get this kind of staged up in here best we can figure um and then we'll uh start pressing on it okay so what we're going to do is we're going to heat it up a little bit just to kind of burn the paint off and then it'll also uh you know get all this grease loosened up so we could wipe it off but we want to be able to get all the paint out of all those uh crevices so what I'm going to do is heat it up basically burn all the paint wire whe it the wire wheel will get in there and get all those from the casting or forging and then uh looks like it was cast kind of see a mark so we're going to do that and then uh get it cleaned up [Music] [Music] [Music] [Music] [Music] okay so we got this all wire wheeled after the heat was applied you can see it's pretty clean and you can see got some nice stress marks right there probably end up gouging that out and Welding it up and then we got this not really sure that's kind of weird how it started to rip right there like that but we can fix that when we lineb it and just cut it out a little bit further all right so we're going to heat this up with using the propane just to kind of get it hot and then uh we'll get you know the Press kind of set and then we'll probably switch over to acetylene to uh to get it a little bit warmer in this area before we start pressing on it kind of got the the Press prepped a little bit got a piece tacked on here and everything should should fit pretty pretty good here so all right we're going to get it preheated and then I get it in the Press [Music] [Laughter] that was cool it moving all right so that press jumped out of there a couple times ended up flipping it over and pressing it this way that seems to help a lot so we got it a little bit straighter so now we're going to try to get that tip bent up so we're going to stack some plates in there on this side so that when we press that deal up hopefully just that tip will kind of roll up we'll see what happens we're trying to get it hot to get it relaxed a little bit see what happens we've uh got 100 T Ram with our air hydraulic setup it's OTC pump you can get all that stuff on Amazon so let's see what uh happens here [Music] mm [Applause] all right so we got it flipped back over again so I made this piece to sit in there so I could hopefully slide that in there and then press this ear down just a little bit more be a little bit more accurate cuz that's the the inside Dimension that we're trying to get so if I can slide that in there and then this ear is also kind of bent up a little bit so I'm going to have to figure that out but I want to get this one a little bit closer before I mess with that sh [Music] [Music] [Music] all right we got it pretty close let's see [Applause] just slightly off there we'll pick it up the forklift and see what it looks like okay so I'm trying to come up the way to see if you you can see how off this side is it's it's kind of twisted up still I'm trying to come a way to push that down and I mean you can't just put put this in press and you can't just press right here holding the forklift cuz it would simply just lift the other side um so I'm thinking I'm going to like do a spacer underneath here underneath there kind of an L-shaped and then I'm going to to weld some material over this side so this side will kind of be freeh hanging we'll preheat everything and then I'll press this down and you know I don't really care what the inside looks like right now I'm trying to get the outside you know close cuz we're going to cut it all out and line board it um another thing this project um has actually been pretty challenging and I do do like this challenge this has been going on for about a week I would say I've been trying to mess with this little bit here and there each day takes about 30 minutes to heat it up with the propane torch sure there's faster ways to do it but I could just set it on there and walk away and do something else so this is not a quick repair by any means but it is challenging to me with what I have so I do like it I mean these things are 2 and A4 in thick it's not something you could just simply Bend so I'm going to come up with something luckily I had some 4in solid bar you know just laying around happened to be 4130 it's actually came from the scrapyard you've seen the shear video of me changing blades and stuff you can see where they actually tried to cut it with the sheer and it didn't really do much but so have these blocks here and we're probably going to utilize these for uh some of the pressing and uh oh something else interesting I noticed again this press was free it was from the scrapyard but I did bend it got a nice Bend in this piece now wasn't there before so time to make a bigger one maybe I'll make a video about making a super big shot press all right so we're going to get this figured out there's just a whole lot of standing here and thinking about the correct way or any way to go about this and just try error try it one way it doesn't work back and forth there's a lot of that off camera that you're not seeing so sometimes you're going to see progress without any filming it's because I st stared at it for an hour and then I tried something and it actually worked so all right we're going to um see if we can make this work here [Music] [Music] [Laughter] [Music] [Music] all right some of you might wonder about the danger of pressing there's is a real danger of Parts flying out and things I try to keep it at a very minimum and not stack a whole bunch of stuff in there if possible I do have this expanded metal that I hung up here so whenever I'm pushing that foot pedal you I try to stay right here and hopefully if anything happens it won't get me obviously safety glasses and gloves I mean whatever you could think of um so trying to straighten this side as I kind of expected just kind of pulled my welds apart but I only did one pass on the outside so we're going to weld this up a little bit better stick her back in there and see if we can't get that ear push down cuz I it looked like it was moving and then that happened so we're going to give her a try again all right about 30 minutes of that and she'll be ready to press down well [Music] all right so we have a major change of plans on this thing we are going to cut this ear off and put a new ear on it so after lots of thinking and deliber ating and talking to my friend about this and everything you know we got cracks in here we've got cracks down here I'm going to be gouging probably 90% of this out anyways and Welding it from from the inside because of all those little cracks so we're just going to cut this off and we're going to put a new one on there um I straightened this one out so it's straight to everything else it's got a couple high spots here but we'll sand that down so I had this my friend Mitch machine this year [Music] [Music] [Music] [Music] on his CNC mill does a really good job except for right there the bill got a little unhappy but it's fine won't won't hurt anything I got a 30° weld prep there uh this hole is undersized so we will only need to weld this one side when we line board it and then we'll when we you know do our final cut we'll cut this side so we're going to cut this off we're going to cut this ear off we're going to use the plasma this is 2 and 3/8 thick right here we're going to cut it back a little ways so I need to get this out of the way so I can line that hole up better to this one and then we will uh cut it you know to the correct location after I get this out of the way we're going to be using our hk12 Beetle I'm pretty sure this is the same um machine that Curtis uses on Ce we're just going to get our track set up over this make a cut so this is basically designed to be used with a oxy acetylene propane torch I made a couple modifications to it so I could run my Plasma on it I made this plate and I made a collar that sits inside there that's all and then this will clamp around my plasma I believe it go like that and I put a zip tight right here very simple easy still have all of our adjustments so okay let's get this all set up and uh see how it handles that all right we got this thing all set up [Music] here so we are going to power this off of the 800 air pack cuz seems like it runs just a little bit better off of that than even my uh phase converter so we're going to run it off of that we're going to use shop air because it will take a little bit of stress off of the machine and uh yeah let's get this thing warmed up and see what happens is so as you can see that worked out pretty well pretty pretty thick 2 and 38 okay we got this cut off I went really smooth um we have this lined up exactly where it needs to be and then us Square to tape measure and you know a little bit of educated guessing we have a new line here of where it needs to be so then from that line would be beveled like that so we're going to try to straight cut it down there and then uh check our fit fitment again I'm going to put a this big heavy wall piece of Doom we're going to pinch this in between the two when we weld it but um for fitment purposes we'll also use that to uh stick it in there and you know help hold it and line line things up or whatever but there's a lot of weld on this side so obviously it's going to want to pull so we're going to Bol this in there probably with like 1 in all thread or whatever and it will pinch that clothes real tight and it probably won't really move too much doing it that way all right let's get to it [Music] [Music] all right so we got this fitted up [Music] here we're going to clean this side so I don't think I'm going to put a bevel on this side now because we have a we got a nice B going on here we have a little gap for our Landing we're also probably going to back gouge that and and then weld it from the other side too so I think we're going to go with that going to check a couple other things and then uh tack it in place get to Welden all right so now that we've established the cut is good and everything is looking like it's going to line up really well so we're going to you know do a grinder clean up get all this me scale off here um probably hit these high spots that was the fastest way for him to do that bevel was just to step cut it down like that which is fine so we'll get all this cleaned up and then we'll get it tacked in there again one thing I am doing is our spacer piece for the center um it was just the hair long so we're facing the end so that will be nice and square it sits in there so when we pinch it together really tight everything will stay stay nice and straight for [Music] [Music] all right so we got our uh all thread in here it's the same all thread that I use for uh pushing and pulling on bushings and to install them or take them out so we got 1in B7 all thread just some you know spacers that we use for pressing and all that uh got that pinched together nice and tight we're going to get a nice preheat on this and start welding we're going to be using Lincoln 71 a75 for the uh wire and 7525 for the gas 75% argon 25% CO2 and we'll be running probably 30 or so cfh here in the shop all right let's uh get to burning some wire oh [Music] for [Applause] [Laughter] w [Music] [Music] [Music] [Laughter] okay this is coming out really nice we're uh getting just a hair to hot so we're going to let it cool down for uh 20 minutes or so and then uh we'll get back on it and finish this sucker out e [Music] [Music] all right we got it all welded out uh no I did not count weld passes but there's quite a few in there if you can see them all stacked up there looks pretty good A little inconsistent should do the job all right so plan is let this thing cool off cuz this is uh hot enough to cook a couple steaks on and then uh we will flip it over we'll unbolt this make sure nothing moves uh you know kind of clean up some stuff flip it over back gouge that crack on the inside preheat it weld it again couple beads down there and then we're going to set up the S power and get her all dialed in all right well it's uh it's about quitting time Sun's about going down so let the sucker cool off and we'll get back on it all right this thing is nice and cool now took our uh our bolt out this thing is just just perfect mooved just enough where we can get this out it's about exactly what I was thinking about what I was thinking it would do so now we're going to flip it over and then I back gouge that crack and weld that seam on the bottom so that will be 100% joint clean off our uh our tabs here and then on to the next step [Laughter] [Music] is out [Music] all right we got our run up tabs cut off now we're going to Santa down and we'll we'll blend the corners in I'm still not 100% sure if I'm going to leave the weld on on the outside we'll leave the world on the inside I'm debating on this I'm thinking probably leave it but let's do the edges and see what it looks like [Music] [Music] all right so we got this all Blended in I think came out all right okay so I'm going to make this two-part video um part two we'll be using the S power to line board this side and I know you guys have been asking a lot about s power so it's coming all right well stay tuned for part two and thank you for watching stay tuned for the next one

Channel: On Fire Welding

Views: 496,113

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Id: dcSR0-Mt7n4

Length: 46min 29sec (2789 seconds)

Published: Mon Apr 22 2024