Modifying BIG Suspension Strut Rod! | CAT 785 Mining Haul Truck

Published 2024-02-29
We'll take you through the entire process to tackle this beast of a job - modifying a massive suspension strut rod from a Caterpillar 784 to fit a 785 mining haul truck! We start with drilling and tapping the holes to extend the bolt pattern, and tapping 12 one inch bolts by hand gives Kurtis a serious work out! We then get the strut rod set up in our lathe and dial in the compound to perfectly match the existing taper on the rods end. We'll then machine off 100mm and machine the finishing touches to accommodate a blanking plug, before machining the taper to length. We finish it all off by tapping those hefty 1-inch bolt holes to their final depth. So, if you're curious about how we tackle these larger-than-life engineering challenges, buckle up and get ready to see some serious metal magic in action!

In this video we are using:
- Hafco TM-26120G Centre Lathe

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All Comments (21)
  • Do you reckon you would be able to tap all those one inch bolt holes by hand!? 😯Kurtis is a machine! 💪 We can say this job involved blood, sweat and tears (by Karen having to do so many takes) 😭🤣 We really enjoyed videoing this one and would love to know what your favourite part of the job was, leave a comment below!
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  • @johnmangan6240
    Unless you have actually Tapped out loads of 25mm threads by hand in a day.... Your comment "That was a helluva workout" is just such a huge understatement!
  • @hananc
    My father, born 1930, was a machinist. A very good one. I wish I could have shown him your channel. He would have enjoyed it very much.
  • @radardoug
    I love how I'm never tempted to fast forward through a repetitive operation on this channel. As soon as Kurtis has to do something more than twice Karen's supreme editing skills kick in and save the day!
  • @thecastros9104
    The companies that use Kurtis to do their parts fixing are very lucky to have him do their repairs.
  • @papaburf7275
    OK, someone owes me for a new keyboard. I spit my coffee out all over it when Karen said "I'll do my magic, you just continue to struggle"! That line was epic! Thanks for all the amazing work Kurtis. My favorite parts are typically how the order of operations lead to the completion of these jobs followed very closely by all the machining work that Kurtis does, shots of Homeless doing his thing, feeding the birds, Karen's editing and on and on.
    Thanks for sharing!
  • @unixnut
    Shop Made Tool for the win! The look of pride on Kurtis' face was gold. 😊
  • @teeslunk
    Why do we work all week. But still watch people work at the weekend. 😂😂😂
  • @user-lh5tx7jy7i
    Hi man , i am an italian boys, sorry for my bad english, but here we study franch, i am an electric engineer but my parent have a farm...my week and are only machining with tractor and truck, and so for me your work is so very good because for me is my normal life. Thanks for lern some things that are some helpfull for my weekand job! Good work
  • When a "little heavy handed man" says...it was a workout I know for sure that is was BRUTAL! Deep respect for your stamina and flawless machining! Greetings from the Netherlands💪💪💪
  • @danielpullum1907
    I saw at least two of these spindles everyday for over six months. I was building the front struts for the the 130 and 170 ton capacity trucks. I was scared to death I'd forget to put the anti seize compound on the taper before installing the wheel spindle block. It took twenty-two rounds on the bolts with a 1" air impact, to "draw/hold" the wheel spindle block to the piece you are going to shorten. A pair of 170 struts weighed 10,000# and 130's were a few hundred #'s less strapped to a pallet.
    That Kurtis is one brave dude@!!! I was plum rigid when he cut thru that shaft. I didn't know where that piece was going to go.
    It's weird watching the hole pattern when the lathe is running. It looks like the part is turning backwards.
    Karen, that was a real neat view in the threaded hole.
  • @chosig
    According to my employment contract I'm a "machine operator", but I'm a 99% CNC operator, give me a couple of hours and some drawings and I can do beautiful things by just punching numbers, but "manual" lathes/mills is beyond me... I can do some basic stuff, but that's it.
    People that say that CNC machines are more exact, I don't think they know what they are talking about, but for repeating tasks CNC machines is a god send.
    Like for next week I have to lathe out some grooves in some rods, 960 to be exact, without the CNC and my trusty ABB robot to do the loading I'd be crying...

    Keep up the great work!
  • @mk84ldb
    ''And I just happened to have a fixture plate made up.'' Love it!!
  • @danielwalker2459
    It’s good to know that if this whole being an amazing machinist and fabricator doesn’t work out, you could use that mag drill for cracking safes. And once again, hats off to Karen for doing amazing photography and video editing, I love how she manages to keep it interesting and informative and speeding up the parts that are repetitive it keeps you watching every second right to the end
  • @ICA17887
    Thank you to the whole CEE team for this beautiful video of reconditioning a part for a customer instead of him ordering it new for 60,000 Australian dollars I think it's great👍Congratulations to Karen for her debut in muscular tapping 💪 😂this is excellent. Sans-abri is truly an adorable and well-behaved dog, well done to all three, see you soon, a long-time fan of France🇫🇷
  • @Ty-bz7zx
    The superhuman patience to drill out those holes..... ugh... Always a blast here with Homie & the birds! Karen .... absolutely killing the edits!! =)) TYVM CEE !
    "You do your thing, let me do mine!" brutal! And the only proper response is "yes dear, my bad." =))
  • @Walkera22e
    Kurtis is a bleeping machine.. My arms fell off just watching him tap those holes :)
    Excellent work as always.
  • @robinhadley
    My Dad would have loved your channel. He was a turner in what was at the time Rosyth Royal Dockyard in Fife Scotland. 🏴󠁧󠁢󠁳󠁣󠁴󠁿
    We used to pop in and see him sometimes when we were kids, and there was always some massive rod or prop shaft he was working on.
  • @matrix54190
    I am always amazed at the finesse, professionalism and sensitivity with which YOUR wife puts together/cuts the videos.
    😂😂👍👍
    Greetings from🥖🇫🇷👋
  • @andrewbailey1057
    I’ve been stressed out with work, and your outtakes really made me laugh. First time in a while. Thank you Karen and Kurtis for bringing edutainment and joy to the world!!!!! ❤❤