CAT Loader Arm repair

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[@RetroRhith]

2:32 totally sounded like up to me also! Great work guys.

[@user-bu7hh3jd8k]

100%

[@JerroldKrenek]

me too, even went back and listened a few times.

[@a-fl-man640]

yep

[@ypaulbrown]

I went back and listened, with head phones, sure sounded like Stop.....

[@hyperluminalreality1]

@@ypaulbrown Dude did not have headphones on. He was on a running forklift in a shop. I also heard up until he emphasized STOP.

[@MrMitchellw16]

Kudos to the apprentice for keeping it cool in the eye of the storm

[@lerkzor]

Indeed. And in his defense, 'up' and 'stop' sound too much alike given the noisy environment. Should have either used pre-discussed hand signals, or used 'up' and 'whoa'. NOTE: this is just the opinion of some dude sitting comfortably in front of his computer watching other people do real work.

[@TronVila]

Whether any of my foreman throughout the years were right or comically wrong i eventually figured out the answer is always yes sir, ok sir, or understood. But you could see in his face their little spat wasn’t anything

[@ypaulbrown]

@@TronVila I agree....no sense arguing with he one who made the comment, I work for a ADHD dyslexic person who will say the opposite of what he wants and will deny it.....I try to have him write everything down due to this, but even that is fruitless so many times......

[@buynsell365]

NICE JOB !!! The "Cardboard CAD" ..........was priceless ......... never heard that one before.

[@gregorholmes1837]

You’re kidding right? Every KZbinr has been saying that for the last 10 years. It’s so old

[@Imholze]

That CAD-joke was nice. Have to remember that. 👍🏻

[@bobbruin44]

Andrew Camarata uses CAD TECHNOLOGY too

[@davidsmith-ih2kk]

Yep it was I have hever heard that even from Kurtis, CEE.

[@davidsmith-ih2kk]

​@bobbruin44 yep too true your very right here, he does use it as does Mustie 1 as does Kurtis, CEE.

[@michaelschulz4317]

I really appreciate you showing the part of the plate not going as planned, IDK if I can speak for anyone else but seeing someone else go through the same struggles helps me at least take a little pleasure off myself knowing Im not the only one lol. I dont have the experience of you, and I dont work on equipment like this but once you figure out the best way I am typically about done with the job and dont see anything like that for a long time always something new I love it thank you.

[@ypaulbrown]

well said

[@billcovert3473]

Forensic metal failure analysis. This is a basic study as to how things break. This exact failure can be seen in u-joints, leaf springs drive lines. I got my introduction into failure analysis when I worked for Cummins in the late1970's, they used to publish training manuals. So we would get a new booklet on various truck related issues, work would quit early, pizza would be served. They did things like drive line vibration, different topics. The one i remember was metal failure types and how to read them. This one as you say probably started in the unnecessary hole. I think the term that was used was "shelling" [as in sea shells] the pattern from where the crack originates leads directly to where the crack starts. The most interesting one I had was a harmonic vibration. The are ultra sonic vibrations that melt metal molecule. Those training sessions that companies used to do in the early days was great stuff!

[@bobbruin44]

Wouldn’t the place where the crack originates be the same as where the crack starts?

[@jeffreywhitmoyer860]

The failure type is often referred to as beach marks. Classic fatigue failure. 30+ years ago I worked with a Cat vendor who was producing a variety of components for Cat. As I recall a lot of their materials were low alloy steels, 8620 and 8630 in particular. They had a lot of unusual testing requirements and in some cases odd heat treatments to achieve the required strength levels. When I watch these videos I have to wonder if any of the components you repair are actually low/medium carbon steel or are alloy. It's something that could affect filler choice and 42:35 the longevity of the welds. The only way to know would be to get your hands on Cats Specs or cultivate a friend with a Porta Spec. Spark testing can also give a good indication of composition. Other than that, your welding and preparation methods are spot on. Don't mean to be a smart ass, just sharing some thoughts.

[@billcovert3473]

@@jeffreywhitmoyer860 Yes beach marks. They tell a tale of the failures originating from the crack source. I am in trucking, this knowledge is important as whether the failure is operator abuse, or perhaps a shock load at a earlier date. I don't get into the equipment welding repairs, but I have learned good tips from Greg and I C Weld as I run a service truck doing road work [45 years]but every now and then do metal work. Smart, yes. Ass, no.

[@kawasakiwhiptwo5821]

I've done a little welding in my time and have been a loader operator for 27 years. You repaired it as well as could be done for structural integrity. I'd trust it. Good job.

[@gregmarchegiani6656]

I love it when the pros make mistakes and admit it. It is refreshing to me, I constantly make huge errors, so these videos don’t hurt my self esteem too much

[@jackabubba]

If someone says they don’t make mistakes, they are either a complete liar or they don't do anything. I had an apprentice once, and he asked me how to stop making mistakes. I told him it isn’t the mistake you make; it is getting yourself out of it that matter.

[@GPz84]

This guy is a maistro when it comes to welding. I see a huge repair, and he makes it look as simple as me making a peanut butter and jam sandwich. I don't know how much that repair costs, but it's worth every penney.

[@AWDJRforYouTube]

It des not take a welding engineer to see why that member broke...That huge hole in the middle reduced 1/2 the strength of it IMHO. Super great repair job Greg.

[@nunyanina583]

Lift point, foolish but at the board meeting years ago was a young engineer who blew a lot of smoke up , well I think you get the picture. I watch CEE Channel out of Australia and I don't see many poor equipment design. Most is due to poor maintenance, pushing limits when a crack forms because of time constraints, not have the available down time. That's kinda what I think happened here. I think they saw the crack forming in my opinion. This guy could have welded the crack strait through and still put the plate on. Never seeing him work before, there is no doubt to his welds. But not replacing the Bushing and line bore to oem specs, it will end up back in the shop for just that real soon. I think anyway.

[@dirtfarmer7472]

About that 1/2 inch plate. As you know the customer is always right even if he’s wrong Thank you Sir for this video & chance to learn

[@sackvilleweldingservices]

Top work young man, including admitting to a mistake. Honesty is the best policy. Well done.

[@rbwoodwork1890]

I did a similar repair on a 966 back in the mid 70’s. I put a shaft in the lower pivots and in the broken one to square off of.

[@ThirdEchelon111]

Oh, man... That pivot arm juuuust made it, with the plate underneath it. Great video.

[@maroonsr20]

Gotta love that CAD system! (Cardboard Aided Design)

[@vicchiapetta4166]

Great job, Greg!! I sure like your approach, as always!! No one could have done a better job than you!! Thanks again, Vic!!

[@MySynthDungeon]

Saturday with On Fire Welding! Alright! Coffee on! Cheers!;-)!

[@jmckittrick1]

Your CAD joke was great timing. I commented about your excellent CAD skills this morning on your excavator wing video

[@shawnjarman9860]

Like how you show, not everything goes as planned, and can admit errors happen, great vid

[@ypaulbrown]

agree with you on that....opps, we did not figure that in, adapt and over come

[@jackabubba]

Chainblock on the fork will save friendships 🤣🤣🤣

[@MrRebar15]

*On Fire Welding* Bravo well done, thank-you sir for taking the time to bring us along. GOD Bless

[@dougobrien2840]

Love your work ,Always something different .Cheers from Australia.

[@johnw55018]

An engine hoist/cherry picker is really handy for hanging things like that. A little bit more finesse on adjustment so to speak, and it doesn't tie up the forklift. Your video reminded me i gotta get some more wire wheels and a new face shield 😂 And for the record i heard stop.

[@PrairieMechanic]

Too funny with the directions 😂 I have these moments with my apprentice all the time. Drives a guy crazy some days haha

[@sjohnson1776]

Beautiful work, and yes, the customer is always right. They want a plate, they get a plate.

[@duggandh]

Happy to see moisture in your yard. Very dry at my home NW Alta.

[@Thedudeabides803]

Excellent job man. Impressive fix.

[@brandonscarfe8803]

Great stuff as always! Thanks for sharing

[@williamthomas9463]

Bet that was exciting at the moment that broke! I appreciated the fact that you preheated it. It amazes me at how many customers have told me over the years that I was the first weldor they’ve ever seen do any preheating. Naturally, they assume, since they have never seen it or understand why, that I don’t know what I’m doing and it’s just a waste of time 🤦🏻‍♂️!

[@ypaulbrown]

everyone can tell you how to cook an egg, back up a trailer and weld........

[@JonDingle]

Some repair that young man! Have got a similar T shirt for mistakes when welding, but I had to cut off and start again. Great work and video.

[@Bradleyscience]

Very nicely done, that was a lot of effort! Cheers

[@charleswelch249]

That's a good repair. It's no wonder why it broke there between the hole in the cast steel. And the drill holes in the weekest points. I understand that it's there to protect the sensor from damage. But also greatly weekends the structure of the casting. Great repair job in the end.

[@mickbaker2483]

Hi Greg we all think we are helping out by engineering some Strath into something and find we have done to good a job to keep the costumer happy then have to go over the brilliant job we have done, I don't feel so bad now to see this can happen to a professional in his line of work I was more than surprised to see how you got that starched work back into place another fantastic job by the man who never seems fazed by the work he is given to do thank you for showing us how to get around a problem and thank's for another great and interesting video. p/s i just hope the customer is happy with the work you have done for them.

[@crbrepairmotorcycles6608]

Thanks for the welcome back always give OFW a👍 up

[@petermccuskey1832]

Really great workmanship!

[@Swimding]

its like watching cartoons on Saturday mornings! love it, enjoying your video while enjoying a coffee.

[@charlietanner6211]

you get the messes do it wright you are a true craftsman

[@rusty6666]

That was a big welding job there lots of fun lining it up to weld but i must say thats nice work...

[@Comm0ut]

The hole location for the angle sensor is wetoddid. The mistake was easy to make but the designers letting such silliness leave the factory was goofy vs. welding a shield to protect the electrics rather than burying it which no doubt someone was proud of because it looked cooler. BTW the squirt bottle trick is classic and works a treat with water-based machining coolants too.

[@snifitall]

Nice work, thank you for sharing with us. When I heard that extractor pop it hurt my feelings way over here to. Funny thing is broken taps and extractors sound about the same when they give up. As we say in the shop if your not breaking anything your not doing anything.

[@rudyrivera7426]

Wow! Cool! Repair! Thanks for sharing! Awesome job! 👌👍

[@davemaccarter64]

nice work. Like all pros, you make it look easy.

[@stevebevington9863]

I imagine it took years to gain the skills to do this work, but Damn, you have a cool job.

[@citrusfarmer]

it is so nice to watch a professional work. Good job

[@douglasweller9709]

❤the Cad system Ha Ha 😝 we had a flame cutter table with an eye and we did just what you did and trace it on Mylar paper and burn it out. Takes me back to the 90’s

[@Comm0ut]

Those tables still sell for decent money and also work with plasma cutters including handheld if you fab an adapter. I keep getting outbid but I'm cheap and retired or I'd have one.

[@tcgrizz59]

Beautiful work. The 3m Cubitron disks are amazing. I’m glad that you forgot about mounting the position sensor. Makes me feel better about my mistakes.

[@ypaulbrown]

they are actually Cubitron II [2] a new formulation....I have been using since 2017 and they are amazing.......I use the 7" and 4.5" and you will be totally amazed how fast they remove metal and also how smooth the surface will be...yes, they are more expensive, but the time saved is well worth it........PB

[@bobbruin44]

My friends wife used to call it the orbitron. Honey can you bring the orbitron home? Lol

[@donyboy73]

You do nice work, I am learning a lot from you!

[@danrabenhorst2549]

I can relate to the cad/cardboard design good job

[@bofilen-ii4fs]

There is a serious amount of work, preperation and messuring before even start welding... I would very much like that job....

[@falcon8553]

Always a pleasure to see your work. 👏👏

[@iaam117]

Great job young man. Obviously it's a stress point and more is better. Up and stop should brought out the comments.

[@gregj7916]

interesting, never ceases to amaze what breaks on earthmovers...

[@ypaulbrown]

Hey Greg, great to be back, hope you have a wonderful weekend, Paul in Orlando, Florida......

[@danielpullum1907]

Way to go Gregg!!!!! It's good to be good and even better to be lucky!!!!! I know the customer isn't always right but he's still the customer and we give them as much of what they want as practical. Good to see you back.

[@mikenixon9164]

Sounded like you said up to me too.

[@Tenright77]

It was only broken the middle part....Amazing repair...Thx OFW...

[@lemoneleven2179]

you did in fact say up, not stop lmao

[@jacobmcnaught3137]

thats what im saying

[@davidsmith-ih2kk]

I am reminded of the Star Trek pilot episode The Menagerie the aliens tell Pike, when they were putting the girl back together they had never seen a human so they did not know how to do it. So she was all deformed. But I digress, a wonderful repair job not with standing the error, your right you never saw it together, so you cannot be expected to know. Life is here to try us, it can be fixed, I still think you did a lovely job in putting this back together. Well done matey well done.

[@lucmarchand617]

This nice clean break look like oilsand fort mcmurray - 45 below zero.yes,repair this is hell job.thanks video again.😊

[@cjmaslowski1112]

WOW what job this was you knocked out amazing skills 👍👍👍

[@mikemoss9968]

I like your CAD design

[@johnw55018]

Now that i had time to finish watching the video, i had to comeback to say, my go-to on broke off bolts is to weld a washer to them, then a nut on top of washer. Then let it cool before turning the bolt out. May take a couple tries but It works almost every time. I spent way to much money on drillbits, extractors, and taps in the past.

[@dcasteaux9181]

I don’t even own a welder yet find your videos very interesting. I would’ve used lots of JB Weld 🤣

[@ypaulbrown]

41:30...love the way you think to get the job out on time......Bravo easy fix, easy repair later....cut tacks and then attack the broken bolts....

[@lefty1999]

its not a simple job if you are a perfectionist 😀

[@crbrepairmotorcycles6608]

One welding repair professionally done ❤

[@paulhammond7489]

Nice repair and that 3M disk is a grand tool... Those tapped holes for the sensor certainly appear to have contributed to the failure. Maybe the design would be strengthened if they used surface welded studs for the sensor plate mounting, rather than drilling so many holes into what must be a highly stressed part of the loader arm?

[@sparksmobilerepair4025]

those are always fun to repair. gotta wonder what it was like when it finally snapped off. never get to see the action just the aftermath.

[@ypaulbrown]

Greg, time for a beer on a well done job......PB

[@bradr8806]

You da man, cold in PNW as well, cheers

[@cyberhornthedragon]

to be fair i thought you were saying up as well as for the plate repair looks good! id put 4 studs to mount the sensor plate an called it good

[@terrminatoragain461]

Cad 😂😂😂 Cardboard assisted design 😂😂😂 Excellent job Greg Filling in those large gaps,sure sets an experienced welder apart

[@dgsantafedave1]

Kinda like watching Bob Ross paint trees and the landscape, perfection!

[@theswissvaper]

A good friend is a welder since almost 30 years.. he would complain about everything... " wrong weld here... angle not enough... no holes to weld on the support part.. yadda yadda yada.... " Completely going nuts 😂😂😂 I would not be able to weld even close to your stuff. Way to go.. GREETINGS from Switzerland...

[@gusm5128]

Nothing that some fire 🔥 can’t fix !

[@Mr20theprophet]

Need that OFW merch! Love to rock one of your hoodies around the jobsite! Ironworker here out of local 207 Youngstown! Keep up the great vids!

[@OFW]

Merch is coming. I’m working on getting top quality American made merchandise.

[@johnscott2849]

When something breaks and you really didn't abuse it, I think it's a good idea to reinforce it. It really shouldn't lift anything heavier than it is rated for. Doesn't look like a good way to do that sensor. I thought it looked like a factory lifting point was the reason for the hole.

[@x...CrankyOldMan...x]

Funny how thats exactly what i was thinking.. I didnt get the long screw hole, where the break happened. Why so long if it was just to secure the sensor...

[@PuFFerTV98368]

Great Video thanks for sharing your skills.

[@michaelmackey754]

Great video! Thanks!

[@acemarine08]

I dis this same repair for west coast sand and gravel in visalia, the new mount for the position sensor came with a new bolt pattern, it was a 950k i believe, got very lucky and didnt have to line bore afterwards, it all pinned up

[@OFW]

This was also a 950

[@aldoizaguirre3551]

it´s magic again! great job¡

[@stevenakn1]

great work bro i was wondering what that big hole was for🤣

[@kerrygleeson4409]

Great job as always very interesting 🦘

[@saxonhammer7239]

Say whoa instead of stop or learn hand signals. It’s what we did in the paper mill where it’s so loud and worked well.

[@mausermann7918]

The "stop - up - stop" part wzs hilarious.

[@bobhosler2024]

Lol, you sound just like me when I am telling my guys to go up or down and they dont listen.

[@dirtfarmer7472]

Maybe if you would make a hoist similar to Isaac, then you would have the control up or down just a little bit, of course what fun would that be.

[@bobhosler2024]

@@dirtfarmer7472 Right?

[@gregolson1824]

4:07 sometimes you just gotta stare at it, just part of getting it done

[@Joeyardmaster40155]

I enjoy watching a True crafteman that knows what he is doing, >Joe Morris Dundalk MD.

[@Asomesauc]

Great repair.

[@MyLilMule]

Sounded like "UP" to me. ;)

[@TarZan49]

It's fun to watch an experienced craftsman look at something and be able to see the solution.

[@frfrpr]

Thanks for the video.

[@DA-zi6eq]

Hey OFW quick tip here: Get the Mayhew 37345 extractor set, better than those spiral ones... Works 💯 of the time... 👍🔥👍

[@nikspanakis]

Anyone can come up with a reason for that opening, that "eye" on that forging, I'd be really interested to hear it. Anyway, that's where I'd add a shaped plate, bevel sides and 100% weld to have any hopes, friends. Elasticity on that arm only causes metal fatigue.

[@ragnarironspear1791]

Brilliant channel 👍🏻👍🏻👍🏻👍🏻🇬🇧

[@woodartist2021]

You really gave that plasma unit a workout, Greg. I like the idea of beveling the joint that way. I appreciate you sharing the repair with us! Does hardwire fill a gap better than dual shield? Just wanted to know your thinking on it. Your repair is obviously high quality!

[@OFW]

It’s better in an open root situation Like using 6010 before 7018. Not better at deposition or weld strength.

[@hectorlatorre9153]

Good job, good welding 👍

[@scotthultin7769]

First 👍's up on fire welding thank you for sharing 🤗

[@victorjeffers1993]

That took a lot of abuse before it broke ! That my opinion anyway ! Great job as always very professional looking seeing how it was brought completely off !

[@theessexhunter1305]

Nice, how did you check the hole was square both ways to the other machined holes as it must have pulled when you burnt in the wire as they always do.