CAT Loader Arm repair

[michaelschulz]

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.

[light-iflk]

As a mechanical engineer your CAD joke was top tier! Made my morning! Thank you.

[dirtfarmer]

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

[buynsell]

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

[RetroRhith]

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

[kawasakiwhiptwo]

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.

[rbwoodwork]

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.

[billcovert]

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!

[SuperRoutman]

As a carpenter, I love watching how quick and useful a tack weld is. Wish woodworking had an equivalent.

[redpost]

For your children's and your sake consider a $1500 3M respirator. Even with the fan, the residual fumes are not mountain air... You are an exceptional welder

[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.

[sackvilleweldingservices]

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

[jackabubba]

Chainblock on the fork will save friendships 🤣🤣🤣

[MrMitchellw]

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

[johnw]

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.

[ThirdEchelon]

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

Great video.

[johnw]

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.

[maroonsr]

Gotta love that CAD system! (Cardboard Aided Design)

[vicchiapetta]

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

[cardiacpa]

You are an artist. That is not going to break again. When you put the plate over the hole I said "uh oh, where is the sensor going to go?" But you figured it out. Very nice and your CAD was spot on