I did this same bearing/gear in a machine much larger. I removed and extended the hydraulic hoses in the center and drove the tracks out from underneath.
You made a tough job look easy. What we do is every week or so we attach an electric grease gun to the swing bearing and then do a full 360 while greasing it. We've never replaced one. And of course we grease it every day, but the grease doesn't go right around, that's the problem.
Great job, letting the machines helping you, a lot faster that way, bet you we're ready for heading home after that one, really impressive work, thanks for filming
I did one of these a few years ago myself on a 307 cat. By far the nastiest, messiest job I have ever done in my life. Disconnecting the swing motor hoses through the tiny access hole underneath the machine leaves nowhere for the fluid to go but down your arms, in your hair, and face. I had an oil catch pan underneath that gave me even less room to work. I threw out everything I was wearing after disconnecting those hoses and it took me three days to get the hydraulic fluid out of my hair. I used rr Ties on top of the tracks and 4 bottle jacks to lift the machine straight up, your method was easier and probably much cleaner.
Thank you, I APPRECIATE your video...I Have always done my own work on my equipment and my Swing Bearing is shot, I lift up cab a few inches before tracks lifts, any way I was considering paying for this work just because I had never done one...after watching this it reminded me it’s just nuts and bolts not rocket science and 1 1/2 hours after watching this I had my machine in two pieces...I just need to pick up parts tomorrow and back together...seriously thank you! I saved $1100 in labor my children can benefit from this $$, your video was not for nothing...your saving fellow fans $$
Well done lads, an outstanding video of working on site, completing a seriously heavy piece of maintenance, without the need of specialised equipment and facilities. I watched entranced at how this was achieved and loved every minute and learned so much too.. Well done all..
Thank-you! hopefully this has saved many people thousands of dollars doing it themself too.This cost me basically nothing . I had bought the bottom half of a same machine that had burnt but only had 860 hours on it. I bought for the track parts cheap,and the bearing was just a bonus.
Good to see you capped and plugged the hoses and fittings on the rotary manifold. I know guys who would have left them to collect whatever contamination felt like working it's way in.
Thanks for the video. I learned something today! ;) Really informative and gives you really practical solution to perform this task. You "just" need to know how everything works and that's it.
Cavolo.... sei stato un genio, complimenti, ottima tecnica, nel nostro lavoro c’è sempre da imparare, il motivo per che amo questo lavoro, è perché non si finisce mai di imparare... compimenti !!!!
This is a super awesome video! I too have always wondered how this mechanism works. Many questions answered in this video. I probably will be dismantling a John deere 35D soon for the undercarriage, Thanks for the insight! New word learned, rotary manifold!
This week a Volvo excavator, next week an Abrams tank turret ring thingy! Enjoyed watching this job you have done, I’m impressed! Right I’ll go back to non stop coughing ! Damn virus, take care....Phil
Made an absolute nightmare seem easy. I think I would have sent it to auction. My Deere has the ring bearing zerk in the cab, and if I skip any greasing, its not that one. I consider a worn swing bearing a finished excavator. Your ring gear should have been packed with grease, not water. Made it look easy - the JD book says fill 4 55 gallon drums with cement and set the unit on them with a crane! But it also wants 3" depth of grease around the gear, and that part is correct.
Well done! I never realized you could pick yourself up off of it either. I never ceases to amaze me how much these machines can take care of themselves. And how such large imposing machines can be broken down so easily with a few (sometimes a LOT) of big nuts and bolts. Hope I never have to do this on my link belt but if I do I guess the biggest challenge may be finding stumps that big!
+skadill Yeah I was thinking that or the timbers like you see used to drydock ships and such. Regardless, cool to see it can done this way. I'm not sure I can free spool my final drives though. I've never opened up the motor to see what the insides look like. I guess if I just disconnected the hydraulic lines it would free spin at worst case.
Do you also have to cap the rotary manifold hoses once removed so they don’t spray hydraulic fluid out or they should be fine as long as you don’t that function?
hello sir, i am very interested, what connection allows to turn excavators top ? is it giant bearing or just sliding oiled surface ? watched attentively but didn’t see
great video, learning curve question: Did the machine get swamped as I am not familiar with how watery thin the oil was once you removed the carriage?, only way to learn is to ask. They had to take the gears out to move the burnt buncher they didn't like the speed on the downhill haul:) Thanks for this interesting share sure it was a lot of work.
Anyone know if it komatsu PC 220 lc3 is a good excavator? And how much would a good price be if it had this bearing replaced in it and runs good just has some links and also has a thumb
3:58 god DAMN. dude has skills similar to a waiter carrying a huge stack of beers at october fest. You gotta anticipate the angle of the dangle. then respond with a stick movement timed JUST right to not enhance the swinging motion but negate it entirly.
finally a life long question has been answered, how many excavators does it take to fix and excavator. the answer? 2, the first is the machine being worked on to lift itself up and the second is a smaller on to pull the tracks and the ring.
Very interesting to see,never had the chance before! Since the cabin can rotate 360 degrees, how is the connection of the hydraulic lines from the upper part of the excavator to the drive system solved?As far i know,the excavator can rotate and drive at the same time,so.....
NoName all the hydraulic lines that go into the carbody go through a hydraulic rotary manifold. If you do a Google image search you'll see how it works.
Thank you Andrew,you solved a lifelong mystery for me! ;-)After i found this video,i got a full understanding of the principle of rotary (manifold) coupling! ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-_PaHQ8edtwc.html Quite simple if you know how,haha!
How did you use the arm without sucking air into it with the recirc disconnected? I seen you capped the one side but how did you get flow back into the system using the arm?
I am going to ask, what was the actual bearing? The internal ring gear and material acts like a big thrust washer? Mechanically described I am a bit confused on the technology and scale of size.
the part he lifted off is the bearing, big balls that fit between an inner and outer race, they load through a plug in the side, at least on the ones I've done...after you've done a few really a pretty easy job....
seen lads smear gerase all over the teeth of the s ring gear when they put it on before they drop the house back down on the gear .........also u can grease through the nipples on the gear rotate 20 degrees and grease again till u get around all the way ............
