The power of hydraulics!!!

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I had a customer call me up to repair a boom arm on an excavator.   "It was cracked" i was told. Well you can be the judge.
Reply:Cracked ain't even a word for it. That thing looks split like a log.Miller Maxstar 200 SDPiperliner #10 Gold
Reply:Ah ...That's beyond ...CrackedWay beyond cracked I see a lot of re enforcing that is going to be needed and grind out and re do that end ...job security Sent from my SPH-D700 using Tapatalk 2Last edited by killdozerd11; 02-18-2014 at 10:57 PM.Backed my CATMA over your CARMA oops clusmy me  What would SATAN do ?? Miller Trailblazer 302 AirPakMiller Digital Elite  Optrel Welding HatArcair K4000Suitcase 12RC / 12 VSHypertherm PM-45Rage 3 sawRusty old Truck
Reply:Been there before......Well its got a crack in it.....shouldn't take to long to fix.......can you do it for $50.......Lyin bastiches. Liars....there all liars!!!!! I mean yes..I can do it for $50 plus mileage and a small fuel surcharge....I'd be glad to help out.Arcon Workhorse 300MSPowcon 400SMTPowcon SM400 x 2Powcon SM3001968 SA200 Redface1978 SA250 DieselMiller Super 32P FeederPre 1927 American 14" High Duty LatheK&T Milwaukee 2H Horizontal MillBryan
Reply:Yup. Looks cracked to me. Couple passes of 1/8" 6010 should fill the gap nicely..Airco Ac/Dc 300 HeliwelderMillerMatic 200 (stolen)Miller Maxstar 150STLMiller AEAD200LE (welding and generating power) Hobart MIG
Reply:Haha yup thats my favorite line!"Just need a quick weld"Well this one took a bit more than that. That is 5/16" thick wall and 3/4" bottom plate. That took some serious power to break like that. This customer is a big outfit though and wants things done right which is good because thats not a " quick weld".
Reply:please do tell how they managed to break the boom off? I also own a track hoe, and wow do they ever have hydraulic power, loaded semi full of grain burried in the mud, hook onto the front and just use the boom, pull that semi anywhere you want!
Reply:Originally Posted by blawlessBeen there before......Well its got a crack in it.....shouldn't take to long to fix.......can you do it for $50.......Lyin bastiches. Liars....there all liars!!!!! I mean yes..I can do it for $50 plus mileage and a small fuel surcharge....I'd be glad to help out.
Reply:Originally Posted by Michael.Tplease do tell how they managed to break the boom off? I also own a track hoe, and wow do they ever have hydraulic power, loaded semi full of grain burried in the mud, hook onto the front and just use the boom, pull that semi anywhere you want!
Reply:Wow, if that is "Cracked" I'd LOVE to see their definition of broken..... Dragon D-150 Arc WelderHobart Handler 175 Set up with 100% CO²WT-60 Plasma Arc Panasonic TIG Star YC-300TWX-2 Panasonic YX-0092UW Water Cooler for the TIG
Reply:Originally Posted by TMW llcI asked a few times and didn't really get a straight answer. I don't even think they new who was operating it. Apparently the Case reps came out and just kind of scratched there heads and said " we recommend ....uh .....you should get that repaired". Sounds like they where even a bit perplexed on how that could have happened.
Reply:Poor terminology , it's really a ''HAIRLINE " crack !  and yea,
Reply:We'd all like to see the finished product, maybe a step by step pics?~John
Reply:I fixed one similar to that a few years back. I cut it off completely, welded a 12" sleeve that would fit inside the boom to the sleeve, slid it inside the boom, welded up the split and fish plated it outside, only took a couple of hours LOL If I remember right the original weld wasn't so hot on the sides of the sleeve, not much penetration.....Mike
Reply:Originally Posted by mrmikeyI fixed one similar to that a few years back. I cut it off completely, welded a 12" sleeve that would fit inside the boom to the sleeve, slid it inside the boom, welded up the split and fish plated it outside, only took a couple of hours LOL If I remember right the original weld wasn't so hot on the sides of the sleeve, not much penetration.....Mike
Reply:Hard to tell from the pic. But that looks like the boom / stick connection on a offset hoe / excavator ...like a JD 70-DLooking at the bottom of the boom first picLooks like the bottom weld broke at the pivot pointLots of stress there when you dig.. The boom pushes down and the stick pulls out... Like breaking a wish boneLast pic looks like a small amount of the weld is still bonded to the pivot tube but most is still on the boom plateI hope I am right or I am going to sound like a complete idiotSent from my SPH-D700 using Tapatalk 2Backed my CATMA over your CARMA oops clusmy me  What would SATAN do ?? Miller Trailblazer 302 AirPakMiller Digital Elite  Optrel Welding HatArcair K4000Suitcase 12RC / 12 VSHypertherm PM-45Rage 3 sawRusty old Truck
Reply:OMG!No problem!I got some 5/32" 6013 and will do it for $45!HAHAHAHA!
Reply:Just use a copper backup, and fill it in with mig.The weld on the bottom of the round tube has a bunch of cold overlap, you can see it to the right of the break. Looks like that was where the problem started.Last edited by walker; 02-19-2014 at 10:49 AM.
Reply:I think they had a "crack" in the floor at that Corvette museum too.
Reply:Originally Posted by killdozerd11Hard to tell from the pic. But that looks like the boom / stick connection on a offset hoe / excavator ...like a JD 70-DLooking at the bottom of the boom first picLooks like the bottom weld broke at the pivot pointLots of stress there when you dig.. The boom pushes down and the stick pulls out... Like breaking a wish boneLast pic looks like a small amount of the weld is still bonded to the pivot tube but most is still on the boom plateI hope I am right or I am going to sound like a complete idiotSent from my SPH-D700 using Tapatalk 2
Reply:I think a crack means its still hanging on the machine . Broken is 2 or more pieces which may or may not be missing . Good luck with the project.Miller xmt304,  Miller S22 p12, Miier Maxstar SD, Miller 252 w 30A, Miller super32p12, Lincoln Ranger 9, Thermal Arc 181I with spoolgun, Hypertherm 10000 ,Smith torches. Esab 161lts miniarc.
Reply:Articulated or offset samething allows you to dig to the left or right of your tracks without turning the house I dug footings up against a retaining wall for a building its slow just moving side to side using just the offset ramInstead of swinging the houseOkay enough of thatDid you contact a case mechanic or one of the parts bots ?Sent from my SPH-D700 using Tapatalk 2Backed my CATMA over your CARMA oops clusmy me  What would SATAN do ?? Miller Trailblazer 302 AirPakMiller Digital Elite  Optrel Welding HatArcair K4000Suitcase 12RC / 12 VSHypertherm PM-45Rage 3 sawRusty old Truck
Reply:It probably was just a crack. 100 operating hours ago. When it would have been a $50 repair.Instead they kept running it until total failure!Be wary of The Numbers: Figures don't lie,. but liars can figure.Welders:2008 Lincoln 140 GMAW&FCAW2012 HF 165 'toy' GTAW&SMAW1970's Cobbled together O/A
Reply:Originally Posted by killdozerd11Articulated or offset samething allows you to dig to the left or right of your tracks without turning the house I dug footings up against a retaining wall for a building its slow just moving side to side using just the offset ramInstead of swinging the houseOkay enough of thatDid you contact a case mechanic or one of the parts bots ?Sent from my SPH-D700 using Tapatalk 2
Reply:Oh that's too funny . Heck with the way cat is re branding things Sent from my SPH-D700 using Tapatalk 2Backed my CATMA over your CARMA oops clusmy me  What would SATAN do ?? Miller Trailblazer 302 AirPakMiller Digital Elite  Optrel Welding HatArcair K4000Suitcase 12RC / 12 VSHypertherm PM-45Rage 3 sawRusty old TruckThat was a tricky one!!! All complete and ready to go. This may take a few posts. These are the " repair steps " Took a combination of dogs,wedges,come alongs, few big hammers,rosebuds and a little patients but got it damn close to straight. Welded a plate inside to reinforce it all and give a backing for the weld build up
Reply:Root pass on the top pin and fish plate fit up and root on the sides.
Reply:Welded out and ready for paint!
Reply:The small stabilizer was allot smoother sailing. Just made a new piece 5/16" to fit the profile and cut, grind and weld.
Reply:Final weld out and put on a diamond plate for reinforcement. All in all pretty happy with the end result. It pinned up (a bit tight getting it all together) but everything is working how it should.
Reply:Looks very nice. What dual shield wire are you running?
Reply:TMW,Awesome repair on all counts. I have a question if you dont mind, and please dont take this the wrong way because i dont know much at all about equipment repair like what you just us; and by all counts im a newbie...On the fish plate that you put on the boom, it looks like you have 90 degree corners down by the pin...I was under the impression that 90 degree corners on plates like this arent advisable because of the potential for cracking (That being said, the boom was just about destroyed lol). So is there a reason you did it this way? lack of options? or did you radius the corners and im just not seeing it?Ok, so thats more like three questions...Anyway, schools in session and ears are open, would love to learn why.
Reply:Originally Posted by TSCGG13Looks very nice. What dual shield wire are you running?
Reply:Originally Posted by PML304TMW,Awesome repair on all counts. I have a question if you dont mind, and please dont take this the wrong way because i dont know much at all about equipment repair like what you just us; and by all counts im a newbie...On the fish plate that you put on the boom, it looks like you have 90 degree corners down by the pin...I was under the impression that 90 degree corners on plates like this arent advisable because of the potential for cracking (That being said, the boom was just about destroyed lol). So is there a reason you did it this way? lack of options? or did you radius the corners and im just not seeing it?Ok, so thats more like three questions...Anyway, schools in session and ears are open, would love to learn why.
Reply:Originally Posted by TMW llcThanks!Thats a good observation. If the plate was a tight fit I would have gone that route. Since there was a 1/4" inch plus gap and had backing behind the joint the corners are not an issue.  We have done many plates this way and have never had an issue with it.
Reply:Great work. Should be no worries about that now. Sent from my SCH-I200 using TapatalkYeah, I know, but it'll be ok!Lincoln Square wave 255Miller Vintage mig30a spoolgunThermal Dynamics Pacmaster 100xl plasmaSmith mc torchEllis 1600 band saw
Reply:Nice job ! Now you can do the next one too .
Reply:very nice job of fitting and welding.Last edited by docwelder; 02-20-2014 at 07:11 PM.i.u.o.e. # 15queens, ny and sunny fla
Reply:Nice repair.....damn nice job!Hobart Handler 175Lincoln 225Rockwell 15-017 Drill Press
Reply:Nothin a little HF welder wouldn't fix!!!Miller trailblazer301gLincoln sa200Miller251Miller spectrum 625Victor oxy-acc2002 Chevy duramax 3500 dually 4x4
Reply:That looks fantastic, I bet the client is really happy with that restoration (much more than just a fix IMHO).Thank you very much for taking the time to snap the photos and post them here, great way for many of us newbies to have a look at things we will most likely never encounter, but we can learn from just the same.Cheers!Dragon D-150 Arc WelderHobart Handler 175 Set up with 100% CO²WT-60 Plasma Arc Panasonic TIG Star YC-300TWX-2 Panasonic YX-0092UW Water Cooler for the TIG
Reply:Nice repair. You look like you know what your doing Beer thirtySent from my SPH-D700 using Tapatalk 2Backed my CATMA over your CARMA oops clusmy me  What would SATAN do ?? Miller Trailblazer 302 AirPakMiller Digital Elite  Optrel Welding HatArcair K4000Suitcase 12RC / 12 VSHypertherm PM-45Rage 3 sawRusty old Truck
Reply:Thanks guys! Glad to post it up. I take pics of most everything we do. Primarily to document things for the customer. Also helps if there is any sticker shock. Lets people see whats involved in the so called "quick weld". Cheers!
Reply:tmw; that was an excellent job of work on that machine part. i can hear that customer saying,"all that welding for a small crack?!"i.u.o.e. # 15queens, ny and sunny fla
Reply:They definitely brought in the right guy, good job. The photo sequence is great, especially the images showing how you drew it back into place with the draw bolt and wedges. This is where the art and experience show. These are the kind of photos are what make this site great because we can all learn a new trick or two. Looks like you were able to bring this back to your shop rather than repairing onsite. That's always nice. Thanks for posting.
Reply:Originally Posted by TMW llcThanks guys! Glad to post it up. I take pics of most everything we do. Primarily to document things for the customer. Also helps if there is any sticker shock. Lets people see whats involved in the so called "quick weld". Cheers!
Reply:Nice job.Very well thought out and done.
Reply:Originally Posted by admsweldingNice job.Very well thought out and done.
Reply:Outstanding post.  I learned a lot.  Great Job.
Reply:Originally Posted by BlackbeardNothin a little HF welder wouldn't fix!!!