OK DP , I've been a machinist for 42 years , now winding up my career for the last 15 years as a tool and die maker. While this did appear a little crude to me at first , given the size of the machinery and the circumstances there was really no other choice.Given Jason's familiarity with the gages I perceive some machine shop background in there somewhere. I have bored enough welded holes over 42 years to know just how important it is to have a top notch welder doing the build up. Realizing that opinions are like belly buttons (everybody has one) the opinion of this old man with 42 years behind him is : Those two guys are TOP NOTCH. I already watched this on Jason's channel and expressed my admiration to him and Aaron. I am truly impressed. No substitute for good working men with good common sense. Lord help the next generation after you boys.
Howdy Mr. Dirt, You are a real slave driver!! 2am..4am..6am Incredible job your guys did!! Fascinating to watch! I never did anything this small. I worked on US Navy Destroyer propeller shaft bearings for 36" diameter shafts. Thumbs up!! Jim
Great job done by all , first time I have seen the hole process, cant wait to see the ol girl back together again. Thanks for the video Mike Jason and the man behind the scenes.
I've never done this but paid and watched a guy that came to me and did work for me and my daddy when he was alive and he was the best but I think Jason is doing as well as anyone I've seen. He's a certified nut but a great worker and he's a smart nut also. Y'all are doing some good work. Thanks for sharing it with us.
Ain't nothing better than good friends and those 2 are awesome to work that hard for another friend. Enjoyed it keep em coming thanks for your time sharing this with us.
I really enjoyed watching you bringing those 2 Guys on to weld build up, line boring set up, and turning them loose. This project for rebuilding machine is probably A $10,000 cost if You got a shop to do that 1 pin for You. You are taking full advantage of payback on Your Shop to be able to do this work. You have really good knowledge to conceive this work and really good connections to get the right parts, people, and expertise to do this work. I liked Your line boring set up and I actually purchased that same large MILWAUKEE MAG DRILL PRESS for about $3000 for fabricating a very large Structural Steel Frame Home all by Myself. I used annular type cutters and wondering if for final cut of a few thousands, if a reamer would have been an option? I love your Videos.
Great video! Very insightful. I had always heard of "line boring" for new boom & stick pins, on site, but never got to see it in action. Thank you sir.
@28:04 Just stick a good sunnen hone in it for a few minutes. I was thinking when you cut the support bracket off, we always had our bearing flanges bolted to the support plate.Then you could just remove the bearing and leave the support plate on. Of course I always bore it to size before tearing down a set-up 😎 We also had slotted mounting holes and a set crew in three places around the support plate, to use to fine tune the bearing back into position. You HAVE to hold the handle of the telescoping gauge at a bit of an angle before you snug it up. Then rock it thru the bore ONCE, and mic it.
If you were to bring that big yellow chunk of iron, into the shop i used to work, we would just toss it up on the big boring mill and line up the old hole, then bore it oversize. Make a sleeve to press in place and you'd be good as new.
That is quite a process. I have a question, why doesn't the manufacturer build these with a hardened sleeve/bushing so that when these wear out (and they all do) the old sleeve can be replaced with a new one, (along with the pin). Great video, and you have good crew there!
I’m not a shop guy so can’t tell you right or wrong on your work, but man that Dirt better than Perfect likes to eat!!, always wondering about his next meal!!
i do line boring all the time on stuff like that good to see thay finely slowed that thing down and use oil you can never have to much oil and keep the tool sharp espesuly the last pass looks good tho
Great job Mike but it may have been cheaper to send the parts out for line boring compared to what it cost to feed your in house “professionals”. Despite what some keyboard experts are saying about all the things done wrong I think the 120 is going to act like a brand new machine once you get it back out onto a job site.
JasonWorksAlot I hope you didn’t take my comment about “professionals” seriously. I forgot to add a winky face 😉 after professional. We’ll see the quality of the work Aaron one you did when Mike finally gets the 120 back out working. Of course having both the 140 and the 145 available means he’s likely not in any rush.
The telescoping bore gauges should be put in the bore at a slight angle and tightened a little so it is slightly larger than the bore. Then they are pivoted until they fit the bore size then get loose again and pulled out. You will have a very close measurement of the exact bore size.
fabricator I’ve always done it pretty much opposite to that. Tried to get the gauge perpendicular to the hole before tightening. Scratching my head going there’s gotta be a better way. Thank you, maybe I’ll hate my t gauges less now
Now we know why you hauled the 4G off to PA to do a bit of yard work. 😎 That Milwaukee MagDrill worked out well, I may have to try that on my ol' LS170. hmmmm. Note: Pls, use safety glasses guys. You all have young children that you need to 'watch' grow up, not to mention you need your eyes for future work.
Great video, but how do you insert the cutter on that shaft and be accurate to 20 thousandth? It looked as if the cutter was only on 1 side of the shaft.
It spins so it's not just cutting one spot it's cutting the entire diameter. What screws with a lot of people is when doing a cut on a circle you have to remember your cut will be on both sides. So if you need to make a cut of .01 inch then you set the tool to make a .005 inch cut.
m2hmghb I must have missed the measurement aspect and how you dial in the cutter to the thousands . I’ve seen professional hole boring equipment where the motored end has adjustment wheels for the cutter and micrometers to size the holes. Nice job on boring.
9856CB we used the back of a dial caliper as if you were measuring depth, take the diameter of the shaft, and then the protrusion of the cutting tool x 2 to get the inside diameter of the cut. We measured our pins and followed factory running clearance.
Looks to me like a lot of work just because you didn’t have the right sized drill bit! •grin• If I didn’t know better, I’d think these farmers know a thing or two, because they’ve done a thing or two! Glad you got the results you wanted.
Them fellas was trying to make your family channel into the "What you hear on the construction - / unedited channel." . . So if l have this right , you fixed the egg and made it round. ? Looks like a home run. .
I would have bored the holes oversized then purchased bushings accordingly. However that's not to say that is the only way. The hardest thing you have to do is to find true Center. Not sure how you guys did that. The other thing is to ensure the mag drill is absolutely 90 degrees. All of this requires special instruments. God bless
They put bushings in the existing holes to find center with the boring shaft. While it may not be the theoretically perfect center, it is plenty sufficient for a construction machine that is going to start to wallow out another egg shaped hole just as soon as they start using it again. Not sure why the mag drill has to be absolutely 90 degrees, either, it looks like the drive coupling can accommodate minor misalignments between the drill and the boring bar.
You don’t need true center on this Thomas. You just need it close to perpendicular to the boom. The hydraulic rams can be off the tiny bit that they might possibly be out from a perfect 90* to the boom since the ends of the hydraulic rams usually have bearings of some sort to account for minor angles. You’re thinking too much with your master machinists brain and are over thinking this job.
I agree. I would have bored for bushings, also. The ability choose a better bearing material than what's coming off the welder and being able to replace the bushings in the field with a hammer are a big plus. As for centering the bore... well, it's not a rocket ship - it's a digger. A tape measure or a piece of string can get them close enough. They'd have to be WAY off to effect it's operation.
Carbide doesn't do well on interrupted cuts, like cutting weld build up. If you watch Jason's video, he explains that the person they got the equipment from has an economical source for the high speed steel cutters they were using.
@@tiredoldmechanic1791 I know that. There are specific inserts for that. Maybe next time call the local machine shop and borrow a tool holder and inserts ? There is no way the grind on the HSS they used was anywhere near what was needed.
It seems like they could have removed one bearing from the plate to try the pin in the hole, but maybe the hole in the plate wasn't big enough and you wouldn't want to cut someone else's equipment.
SHOULD MAKE THE JIG WITH FLAT PLATES SO THEY CAN BE BOLTED ON AND OFF NO MORE WELDING EACH LEG WILL UN-BOLT AND STORE IN THE CASE FOR FUTURE USE. NO MACHINIST JUST A LAWN MOWER MECHANIC WE LIKE TO REUSE OUR TOOLS. BEARING PLATE HOLES OVER SIZED SO YOU CAN SLIDE THE PIN'S THROUGH AND TEST FIT WITHOUT REMOVING THE JIG JUST A BEARING .
You were getting some chatter. We usually think about slowing the surface speed and making things stiffer like shortening tool overhang, but that is not going to be doable in your case. The cutting lubricant look very thin. I think I have seen Mike use tapping lube which would probably be better. Soluble oil is cheap and OK, but I tend to use RTD cutting lube, which is still not a whole lot of money.
DP, you guys are doing the best you can but.... You really should have looked up on the RU-vids how to use a snap/telescope gauge and maybe even got a cheep micrometer. You guys were not getting accurate measurements the way you were using the snap gauge. I'm not trying to come across as a know it all or anything but in my opinion if you're going to attempt a job like this, do ALL the research you can before getting starting. I know this application does not need to be within a thou or two but you guys would have been done the first time if you would have done a little more research. Again, you guys did an exceptional job for the experience and equipment you had! And in the end got'er done! Well Done!!! Keep up the awesome content, I always look forward to seeing new DP videos! Stay safe over there! Dan @6-4_Fab Glen Rock, PA
Wadda know. The Three Stooges Series has been resurrected. I am referring to the ongoing commentary by the actors, not the craftsman ship underway. Thanks for sharing.
Well, you all put the hours in(some more than others) to get this one done, looks like you had a good time along the way... Definitely taxing the brain cells on this job 🤯 Oh and Mike, is that your D4G on truck or track website? 🤔
Great job, I think I would have Bored, without welding, and bored it out to the next pin size. Using a bigger Pin., creating more "ware area", making it last longer. Or bored it much larger, to install a larger ware sleeve, With larger pin, that go's all the way across "Ware Sleeve", creating a "Much Larger Ware Area". Lasting over twice as long. My thoughts, I hope somebody can use this "info" Love your videos
Well dang. I checked out truckortrack looking for transmission parts for a Deere 670A grader but after running the first few part numbers, they didn't have anything.
Hey DP you're late to the party with this video. I've already watched a 2 part video on Jason's channel for this. But now I have to watch this one to compare.
At first I cringed....(I was a machinist for a decade)... Until i seen the machine being used. Even an experienced machinist would have found themselves doing probably exactly as you guys did. It was clear you were limited by the power the head had, cuz when you hear that tool start to chatter like that, you want to halve your speed and twice the feed, but clearly that wasn't with that head. I think it turned out great.
Thomas Desmond I can’t imagine how much longer it would have taken Aaron and Jason to polish their shaft with a fine grit stone with oil vs the emery cloth that they used. Never mind why it would be better considering it is essentially just a drive shaft that just needs to fit snuggly into the bearings.
@@Crewsy Yep. We've always used Emory cloth to knock down high spots and polish with lathe work. We even have hand held belt sanders that can take a couple of tenths off a shaft. Adam (Abom79) has used them on his videos more than once. We'd use stones on flat surfaces, but Emory on round shafts.
Depends on what brand calipers you have. If you have a quality brand and have used them enough to know, they can be very accurate. Not saying a set of mic’s won’t be more accurate. But A quality set of calipers will do the job just as good.
I don't think they are boring any holes for bushings. Everything is native. But if they were doing holes for press fit bushings, it would be best to use a decent set of micrometers.
You may have already discovered this, but there is an Aussie on YT that has line boring down pat- he works on larger projects, but the concept is the same. Check out ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-C4x8Q_8jPy0.html&ab_channel=CuttingEdgeEngineeringAustralia
Way to much BS for a mature audience. Seems like ever other word is a chance for one of you to takeover as winners of the funniest guy award. Very childish for adults. Anyone that takes time to watch a line bore video is, 95% of the time, a professional who isn't trying to be entertained.
@@DirtPerfect You are welcome and yes I'm one of those guys but where's the entertainment now? None when your serious about what your trying to convey. Thanks for recognizing the problem.
@@DirtPerfect I'm in the 5% that isn't a professional but loved the comedy and learned a few things!!! Since when can learning not be fun ???? Subscribed to all 3 👍
