Excavator Repair, Swivel Joint Rebuild, Yanmar Vio-50.

[@FarmCraft101]

Like the video? Want more like this? Give it a like, a share, and check description on how to support the channel. A HUGE thank you to all the folks giving their support, especially my Patrons on Patreon! You guys are awesome. www.patreon.com/FarmCraft101. My patrons get early access to the videos, and even help with editing decisions, titles, and thumbnails. We are building a really cool community over there. I hope you folks like the video, and have an awesome weekend everybody! Next week's video is going to be a fun one. I've almost finished it and it will be on Patreon either today or tomorrow. Here's a short clarification on this video: kzbin.info/www/bejne/mpCogWyaltBpndk

[@TheNikitis]

I have the Vio 27-3, same year as yours. It's the same machine exactly except for I'm lacking the enclosed cab. (Open Cab). I'm running into the same problem as you. The dealer wouldn't fix it, but I know it's this piece as they checked the valves, and the cylinder and are fine. I want to Thank You whole heartedly as I'm new to these things and I know this is what is wrong with mine. I now know what to ask for in repairing mine and I had no clue before. I also want to ask, do you notice an improvement in your travel motors as well as a result of this fix? I'm losing power there as well as in my blade. One other difference is, I have a plastic gas tank, and have no gas issues. Verified after your other video. For all of your caps, you used, what size hydrolic caps did you use while doing the project? Also KEEP DOING THESE! Every one of these videos helps me in fixing mine up as well as mechanically they are identical!

[@TheNikitis]

Also I upgraded the Lights on mine to LED's. HUGE improvement. I recommend the Sylvania 3" LED Light 2N1SP, part number 11920293 F1 for the boom light replacement, fits perfectly, and the Sylvania Lightbar 2N1SPBX Part number 12018818 F1. Both of these were replacement bolt-ons for mine, the light bar for the top may or not fit yours, but the boom light certainly will. I'd need to see your front top light to see if it has the same mounting bracket. They have 2 light modes, wide, and narrow on both. To use both modes you'll need a SPDT switch to switch between the modes, I can send you wiring diagrams for them and you can make a new video on it. Night time working is fun on the excavator.

[@lemmywinx]

Oh Man, I've done this exact same job on my Volvo EC27 - boy oh boy they don't give you any room to get at those swivel joints. Took me days! On my machine they have a little peg at the top of the joint which interfaces with a slot to allow it to swivel with the cab. The pin on mine had worn slightly, which meant when the cab rotated the swivel lagged behind slightly (as the pin had some slop in the slot). This meant that it would pull / push on some of the connected hoses, which caused them to loosen and leak over time. I thought this was worth mentioning.

[@SamStolpe]

Do the dumptruck and the excavator have names yet?

[@FarmCraft101]

@@TheNikitis No difference in my travel motors, but if those seals had been leaking then that would be the expected behavior, so it may fix yours. My caps were 3/8 BSP and 1/4 BSP, mostly 3/8. Thanks for the tip on the light, I'll check that out. Cheers.

[@pjford1118]

Great idea about the cap for the o-rings! I was about to say in trade school we were told to always prelube o-rings, seals and anything that should move when assembled.

[@TizonaAmanthia]

this was a great video. you show us a lot of the difficulties of doing mechanic work, getting grease running down your arm, banging your hand, squirming into tight spaces. these are REAL experiences. it's not glamm'd over, to romanticice the "oh it's in bad shape LET'S FIX IT! montage glamshots and then it's magically done. as well as doing the trial and error work to diagnose. to top it all off, good camera work, and bonus points for pointing out where hydraulics are used in lots of other places.

[@brentonkelly3780]

Wow! Thanks so much creating this video! It was a heap of work to repair the issue, let alone to film the precedings!😅 well done!

[@vitaliyp1988]

loved it when you pulled out the crows foot. i've shown that trick to a few of my mechanics. they were stunned

[@Dc-nc3ws]

I have several Yanmar excavators and I have done a lot of the projects that you have done with yours. There’s not a lot of people that would take on a project like that good for you and great job! Keep the videos coming they are enjoyable

[@markbrown9765]

These videos are so awesome. I have a later model that is the same as yours (rebadged but the same manufacturer). Awesome to see how it works. I've often wondered how they got hydraulic oil to the drive motors and blade through a swivel. Very cool.

[@deice3]

Never thought about how they did the swivel, its such a cleverly simple solution. That was some pretty cool drone shots towards the end!

[@MuhaloTube]

The wrist diaper is great! Also, you did pretty good with the hydraulics and filming everything.

[@vinces8974]

That was great work , I knew about the swivel joint and always wanted to see one rebuilt up close and personal like, what an engineering marvel, and the coyote sounds were cool to ,great video, and audio

[@larrycosby2010]

[Loop pool⁰]

[@3208catbird]

Outstanding video! Love how you explain in detail!! Thank you!

[@nonsquid]

@42:53 You said pressure relief valves, but those are actually the solenoid coil /spring housings with manual over-ride center push plunger. If you want to manually over-ride the piolet valve you would depress the center button. Love your videos. It shows the wet work of hydraulics.

[@MrEuph714]

From years of being a helicopter mechanic and dealing with hydraulic lines above my head. I found out tying rags on your wrists stops it from going down your arms. It will always be a mess though.

[@52denim]

Excellent tutorial

[@cwkie3776]

Its like a computer but with fluid! Amazing

[@LarryTait1]

Job extremely well done!!

[@keithlincoln1309]

I learn so much from your videos

[@derekadams729]

Hey jon. It would have been a good idea if the manufacturer had put connector couplings a foot or so from the ends of the hoses. That way you can disconnect it their instead of fighting with the the fittings at the swivel. Great job on that fix. I was waiting for a pack of Coyotes to come running out of the dark towards you when you were filming 😂

[@kenkirby928]

When I was in California working on all that equipment we always had a hydraulic paste to seal all the threads with

[@jodydoakes8754]

I visited Japan several years ago and noted that piping was in normal US sizes. When I inquired about this, the answer I received was "well, you occupied us for 40 years, what would you expect?" This occurred more than 30 years ago. I wonder if Japan is still using USA pipe sizes. According to this Yanmar machine, perhaps they are.

[@GlennRobinson-p4v]

Something I learned from a mechanic when doing oil drains on cars he put a rag wrapped around his wrist to catch the oil

[@ronm3245]

I didn't know the exact meaning of "evert" and when I Googled it, I learned she had won 18 Grand Slam titles.

[@swedishpsychopath8795]

This isn't how swedish excavators (like Volvo) work. They have a 200m long hydraulic line inside the lower unit to accomodate for turning. You'll never run out of hydraulic pipe with 200m to spare.

[@DreamState71822]

Just an fyi I live in southern Arkansas. A few years back the cyote population had gotten high enough that they were attacking hunting dogs and in at least 2 cases they did infact attack a both a hunter in the woods and one person hiking through the woods. No they do not normally attack people or large animals but when the nature in an area becomes unbalanced it can happen.

[@c840125c]

33:12 GOT IT.

[@markthomas1080]

You Sir, are a steely eyed missile man!

[@SomeGuyInSandy]

Subbed for gratuitous seal dad jokes.

[@wadepg]

FYI...An 18 year old aspiring Musician, visiting Cape Breton Canada, from Ontario, Canada, walked a famous hiking trail , 15 years or so ago and she was killed by coyotes. The males will kill if they are in heat apparently.

[@ed631941]

How about a charity fundraiser? Everybody donate money,then we track down the design engineer and video him doing this repair.

[@Pest789]

I just want to say I really appreciate you putting yourself through going under that excavator and taking that swivel joint apart *with a camera in your face* for my benefit.

[@CobetcknnKolowski]

Now this is the high quality content I wish Television was! An in-depth video on diagnosing and solving a problem with a machine. Love these videos! Especially the Coyote cheer squad!

[@ljprep6250]

YT videos are head and shoulders above the super low level of teevee. This video was a perfect example. I told the cable company to stuff it in 2007 and never looked back. Now I have Netflix and Prime for movies, and I figure I've missed about one billion commercials by now by never watching TV or listening to broadcast radio any more.

[@Locane256]

Wow, that was great. I watched every minute of it and I feel like I gained 10 years of hydraulics knowledge in about 45 minutes. The most ah-ha! moment for me was when you took us on a short tour of other equipment that all had similar looking hydraulic pieces in them - I'd been under the impression that hydraulics were bespoke and specific to the machine and had just never thought about how generic and similar it might actually be. I was thinking they were more like engines where there's so much variation in how they're done (small vs. big, 2 vs 4 stroke, # of cylinders, etc) that it was almost specialized knowledge per piece, but I get it now. This is one of your best videos IMO - thanks for making it!

[@TheNikitis]

The pumps themselves are a little more complex, but the rest of the system is just checks and valves, and pressure build up. If it leaks (due to those clumsy seals) you lose pressure and thus functionality of your device.

[@Grognarthebarb]

Like industrial Lego

[@jacklabloom635]

Fascinating repair video. Great job on the repair.

[@Rob89139]

One of the reasons I keep coming back is because you take the time to explain why you are doing what you do in these videos. I'm certain I'm not alone. Okay, back to the video

[@benjaminstecher9789]

Hey there! I want to share an other trick with you. If you don’t want to run oil down your arm use a multi use rubber glove, not one of those super thin one time use gloves, and fold the rear side one time to outside. So you have a channel which catch the oil! Thanks for your awesome videos. Greetings from Germany

[@nerfinator03]

Since I've started working on dirty stuff with dishwashing gloves I had such a better experience doing stuff. Great grip, harder to cut and tear and multiple use for the nasty stuff. Extra points if you wash them by just washing your hands while you still have them on!

[@DanielinLaTuna]

Reason I stopped changing my own oil - oil running down into my armpit!

[@Squibbleses]

Great stuff. I've always wondered how heavy equipment like that can rotate without fouling cables and such. Also coyotes!

[@Rorschach1024]

There are rotary electrical connectors, rotary fiber optic connectorsxascwell as hydraulics. Ive seen and worked with custom built units that encompass all three for use with offshore oil well umbilical reels.

[@patdenney7046]

Take pictures

[@copperclockmaker]

I figured they had something like that in there. I used to be a tank mechanic on the Abrams. It has something similar called a "slip ring" that is mounted in the center of the turret under the main gun breech. It has fewer hydraulic ports on it, but also has electrical contacts to transmit power, data, and communications between the turret and the hull.

[@Locane256]

30:50 Ahhhhhhh I get it now - I was completely mystified by how a swivel joint could possibly work, but after seeing the holes in the cylinder and your U-shape explanation, it makes perfect sense. You are right, it is a simple solution to what seems like a really complex problem.

[@martinruetzler2856]

Yes, seeing is understanding in a second. Thank you so much!

[@CGT80]

I was also unsure of how the swivel worked, but I operate equipment and repair and build many things. My guess was that it was laid out horizontally or radially. It makes sense that they built it vertical, so I was close.

[@williamburrows2755]

Real high pressure stuff. Great master tutorial - bet the local hydraulic shops are snarling.

[@jamestointon9285]

As someone who has worked with tractors and plant and repaired myself all my life, I found this video very interesting and enjoyable to watch. You made a mucky daunting job very clear for us all to see and should encourage people who have viewed to have a go themselves. Great filming too.

[@greengohm]

I know it's kind of random to say it, but I really appreciate the fact you clean machines and their parts when working on them. Others take great pride in rummaging through all that mess as if cleaning it would take away their manliness or professionalism.

[@gbentley8176]

Yep gets my goat. Two minutes to clean makes a job much easier especially when dealing with hydraulic cleanliness. Often shows other hidden issues too.

[@guy7gsa]

The cleaning is much appreciated

[@danhard8440]

ya its good when they clean the oil that is preventing it from rusting🤣😂

[@silicon.alchemist]

ya pretty much don't have any choice when working with hydraulics. A little bitty bit of dirt inside any of those parts and the whole system can be toast...

[@briandufty5081]

I call it .obceen.

[@simonrival1613]

We used to tell tank operators in the army that they could only rotate the turret 7 full revolutions either way before it unscrewed itself or bottomed out. It was pretty funny when they would forget to keep count and come up to us asking us how to fix it.

[@jonka1]

From what you say I take it that there was no indicator in the cab to tell the operator how many revs were left in each direction? Seems like an obvious thing to provide.

[@simonrival1613]

@@jonka1 it would be if it was true and all.

[@lynnryckman7300]

Funny

[@h8GW]

I imagine the ones who could do it with no problems and through entire exercises were promoted immediately -and were let in on the secret.-

[@amosbackstrom5366]

​@@jonka1 r/woosh, there's always one

[@kilianortmann9979]

Really cool and in depth video, I had to learn how this works a while ago, completely forgot, because I never needed it, but it all came back. The Seals always make me smile.

[@99andrianmonk]

Thanks! Very informative and helpful video. Great information coupled with just the right amount of humor. Only thing missing was your wife coming out to give you grief on why it's taking so long. 😀

[@FarmCraft101]

Thank you, sir!

[@arcrad]

This channel has some of the best content on KZbin. Can't wait for the next video. Thanks for putting in all the extra effort to film, edit, and explain all these projects.

[@Locane256]

10:30 LMAO spinning the machine around while you explain the systems on it made me laugh out loud. You look like you're havin' a great time in there 😂 spinning around in you $14,000 toy, I love it lol

[@glenpaul3606]

Great job rebuilding that swivel joint. You replaced all those seals as good as any professional. It's nice to see someone fix things themselves as good or sometimes better than had they hired a shop to do the job. Very gratifying I know because I'm the same way.

[@pdreese]

I live on a fairly remote island at the top of the South Island of NZ and have a lot of similar equipment to you. Your videos are a huge help to provide some understanding of to resolve potential issues. While I don't think I have the skill set to take a repair like this on, at least I now know what to look for and what's involved with having a mechanic come out to do it.

[@xxxmikeyjock]

the hardest part (other then the contortions to work inside the belly of the machine) is getting the new seals in. other then that its cake

[@dkosmari]

I find this kind of content more enjoyable than most "restoration channels" (specially because most of them are fake.) Walking us through the investigation steps is great, it's like we're watching someone solve a puzzle.

[@robinparkes988]

A great comprehensive video as usual. You’ve got a great ability to explain what, why and how you are doing something. I always look forward to seeing a notification from your channel. I know I will always learn something. Thanks from across the pond🇬🇧

[@gbentley8176]

Reckon we all love the channel here in the UK.

[@HomesteadJay]

You my friend are an excellent teacher. To be able to articulate and record and actually repair is brilliant. Thanks for sharing. That Yanmar is going to be brand new by the time your done!

[@jstar1000]

Love all your videos, your a great teacher and top notch mechanic.

[@mikepettengill2706]

Good work, super interesting and again, you are a monster regarding the amount of work you do. I can't even imagine putting out that much consistent effort on such daunting projects. Your persistence is mind blowing.

[@denjhill]

Those coyotes remind me of when I was younger and worked on an Oregon sheep ranch. We would trail packs of 1000 sheep 50 miles cross country to summer grazing areas. Inevitably, the yotes would find us at night. Their howling usually meant we would find a dead doe in the morning. This was before the age of high intensity flash lights so it was impossible to find them at night. But during the day a .308 lead pill would take care of business. Now I'm old and still in a rural area and they still howl. My neighbor thinks it sounds romantic. ??

[@dpeagles]

There is definitely a reason why coyotes and wolves were almost wiped out Seems Americans have forgotten.

[@mattfleming86]

I think it sounds like "what am I going to find dead in the morning" The problem with coyotes is the litter size. WITHOUT some management the populations explode. Without coyotes, the deer population will explode (and subsequently be obliterated by disease) When the coyotes stay away from my livestock I have no problems. But enough bodies will change anyone's mind.

[@jazko]

Damn, I kid you not - probably a week ago I thought, how do they make the seal between the drive motors and the upper part, if it can rotate endlessly. Now I know. Thanks so much for taking the time to explain everything in technical details.

[@kylebonney1765]

Another one, teflon tape in hydraulics is definitely common but Loctite 577 is preferable. When installing teflon tape to fittings never go over the last thread otherwise it will be cut on installation and pieces of teflon will go through the hydraulic system a cause issues such as block valves or filters

[@tutekohe1361]

You were a little mistaken at the 42:30 mark, when you pointed at the Slew Motor and gearbox and said it was the Rotary Union. The actual Rotary Union was under the cover where you were describing the electrical Swivel Joint is. The giveaway was the hydraulic hoses leading into it. Your explanations of how systems work is excellent and much appreciated by people who may be mystified by some of these mechanical systems.

[@FarmCraft101]

Correct you are! kzbin.info/www/bejne/mpCogWyaltBpndk

[@ivyking4149]

I totally admire your cold-headedness while reducing the posibilities as to why exactly the blade is sagging. On top of that you proceed to take out the heart of a chunk of metal while accurately noting what line connects to what valve in order to repair/replace the part yourself. Amazing!

[@Locane256]

27:00 sounds like an excuse to buy a nightvision camera to me 😏

[@ExcavationRevelation]

Zip ties are a great way to mark hoses! Ribbon works well too, even if you don't have enough different colors you can just rip them at different lengths

[@pauldowner8335]

Awesome job and determination. My great grandpa use to always say "some damn fool put it together, this damn fool can take it apart." I live by that motto and looks like you do too. Learn a lot from your videos and enjoy the side-bar entertainment and comedy.👍👍👍

[@FarmCraft101]

I often tell myself, "Somewhere, some guy is doing this while drunk and stoned. I can figure this out!" ;-). Cheers!

[@vinces8974]

I have been a damn fool too, for a long time

[@marcusgs12345]

Looks like a world of pain doing that job, but really satisfying knowing it's done!

[@aarongaal8168]

You are extremely impressive sir. I don’t know if you have a background in heavy mechanics but you should open a online school to teach the new generation, cause there are tech’s in my area that can’t do half the things you can. Thank you so much for sharing your experience and knowledge with us all 🙏👍

[@bjcombs1989]

I literally am tearing my Bobcat 323 apart on Monday to rebuild the Rotary Manifold... couldn't ask for a better video today.

[@srmayhew1]

When you are working with hydraulics try tying a rag on each wrist. It keeps the oil from running to your arm pits. I learned this while working on aircraft that use SKYDROL hyd fluid. That stuff burns your skin BAD.

[@gulerod]

Yes a new video! 45mins of pure goodness!

[@ncampora92]

Why would anyone ever skip your explanation sections of the video, that's the best part, the knowledge transfer! Greetings from Argentina 👏

[@FarmCraft101]

Ha! Tell that to my wife and daughters! lol!

[@tjman4943]

That swivel joint is one of the most fascinating mechanical components I've seen in a long time. I've watched the chapters on that several times and I'm blown away still.

[@orangetruckman]

As always, great video with great explanations and funny innuendoes. As a tip-while working with fluids and gravity, I always have a full-size towel for absorption. Used towels that are clean make life soo much better for those situations 😉

[@GAMESHREDDER27]

At our shop we actually use old telephone wire because the wires are all different colours with stripes and you cut the wires in 2 pieces and tie them to the fittings. Works pretty good when you have to take the valve blocks out

[@brianbeasley7270]

A very enlightening video--I loved it. Now I know how swivel joints work!

[@Bob_Adkins]

I felt your pain working in cramped quarters with oil dripping down your arm. When you walked to the field I thought you were screaming at the sky, but it was only coyotes.

[@JTCF]

Coyotes feel like something between a wolf/dog and a fox, their voices have much more of that "yapping" that is often attributes to foxes. Pretty cool, but also a bit scary.

[@GaryT1952]

This was terrific FC101. As always, great logic and problem solving, I learn so much from your content. Thanks for taking us along!

[@nevadabadger7925]

I’ve been working in the fluid power industry for 28 years. I primarily work on industrial equipment because of all the obstacles you had to overcome in this video. Mobile equipment repair can eat up an awful lot of man hours. Great tutorial.

[@Tacompton425]

Wow! Nice detailed repair!

[@thomaswarnecke3991]

I am very impressed with the fact that you are willing to tackle everything that comes along! Wether it’s carpentry, tree service, vehicle repair, or heavy truck repair, small engine repair or whatever comes around; you’re willing to jump in! What I’m most impressed with you leave all the curse words out of the videos!!! HA HA HA😅

[@boxer6298]

Well in my opinion you just took the Kings place of DIY, amazing what you did 👍

[@jacquev6]

Awesome video as usual! I really enjoy your analytic approach of how things *should* work to find out why they don't. Thank you for taking the time to share all that with us!

[@dustcommander100]

Man, you are a thinker and a teacher! Excellent video and excellent explanation of hydraulic operation and troubleshooting techniques! And you have nerves of steel. The sound of those coyotes would have sent me into the house. Like the sound of a bobcat or a screech owl. I can't work with the hair on my neck standing up! I always use that time to do indoor stuff like order parts or study something....

[@benniemathews9624]

You sir, are a master of everything…at least it seems that way! That was a great explanation (you’re also an excellent teacher) of the hydraulics involved in the operation of the excavator! I am now much more educated on the subject 😊. And your editing and camera skills are superb! All in all, it was quite a video- educational and very humorous to boot! Thanks for sharing. I can’t wait for your next video.

[@ActinOut]

Loving the videos & info... just have to say & express appreciation that you have likely the cleanest mouth of any person working on this level of mechanical repairs I've seen. 👍 Thank you!

[@FishFind3000]

I always wondered how they moved and still got hydraulic fluid down to the drive motors.

[@keithmalatesta7660]

Fantastic video! Very enjoyable to watch!

[@adanfranchi578]

Another awesome video recorded and narrated by the master DIYer. Keep up the great work. I can’t wait until the next video. Your videos are very much appreciated!!!!

[@mikeboccasini4166]

This was awesome! Probably the best video I’ve seen ! You attack these things without fear which eases the fears of the less experienced.

[@ohasis8331]

Man that was a fascinating look into your world and a few problems most of us would never come across let alone have to think through. One thing that does come through is the respect you've gained from me for this process. You've also shown that the necessary ingredients for tackling a job like this include perserverance, patience, ingenuity and stoicism to name but a few. I was as happy as larry when your job finally came together successfully. It also caused regret that I'm not likely to need to utilise this. Thank you for your time and efforts. PS. Those bloody coyotes would drive me mad. Do they ever keep you awake with their constant noise?

[@noanyobiseniss7462]

Am I surprised? Nope, welcome to my world. We live in similar realities. :) When my Mom was alive she used to say "if it wasn't for bad luck you wouldn't have any". :)

[@jccorder1]

I don't know why anyone would skip a chapter of your videos. You school us on things all the way through. A good spotlight will let you see the glowing eyes of those yotes.

[@proberts34]

29:24 "And basically I'm going to stab the seal". . . sharp intake of air in shock. Too funny. 😄

[@kpulay]

I’m 46 yrs old and since birth, I always wondered how excavators could rotate 360 deg without hydraulic lines getting twisted. Mystery solved! Thank you!!!!!

[@iveneverdonethisbefore8390]

Same here!

[@Jay22222]

BMX bikes have to solve a similar problem in allowing the handlebars to rotate endlessly without brake cables becoming twisted.

[@misters2837]

@@Jay22222 Yep...My Haro had a Gyro...Seems more similar to Helicopter than an excavator.

[@chrishare3981]

Me too

[@AlexanderRM2010]

I was a submariner in the US Navy as both a Sonarman and a Supply Officer. Never had to actually dig deep in repair, but we all needed to learn every system onboard. This takes me back to my qualification days as a junior Sailor learning our hydraulic systems, especially the explanation of opposing pressure in a hydraulic ram.

[@Molb0rg]

Yes, that opposite stuf was actually one of the gems for sure

[@amosbackstrom5366]

Yeah I've done some hydraulic repairs but the surface areas on the extend vs retract are something I've never thought about. That means the extent will always have more power than the retract doesn't it?

[@AlexanderRM2010]

@@amosbackstrom5366 Not always, depends upon design.

[@motoXjake]

I think I would find it so hard to resist digging a pit to work in standing up for a job like this.

[@timhilton5096]

Jon your videos are informative and fun. I’m very appreciative of the time and effort you put into them. I’m your newest member on Patreon and I hope others will join me in supporting your awesome content.

[@matthewcarter7491]

Excelllent Video ! I had a small excavator once, it had a leak somewhere in the swivel joint, I was far too scared to try and repair it.. I am in awe of your bravery taking that job on. Love the Channel. I learned so much for watching this. Best wishes from Finland..

[@Grady_OBS]

I’ve been watching your videos on the yanmar and this video alone has shown me so much about hydraulic systems and I thank you for putting the time and effort into explaining everything. Very educational video and well detailed! Thank you!

[@williamgibb5557]

I did that same repair, 45 years ago on a much larger unit. Much more room to work with those much larger hoses. A definite plus along with being younger it was simple. Heavy but workable. Presently working on replacing the hoses down to the motors on a small unit. Tight working but crowsfoot wrenches are handy tools.

[@BaronSVG]

Awesome video!

[@gittesilberglarsen1262]

@7:50. An interesting observation is that the oilpressure scales with the piston area as this: force = pressure * area. So if the seal breaks in the piston, the area involved is no longer the area of the piston but merely the area of the rod. Now say the diameter ratio of these two is x2 well then the new pressure will be: force = new_pressure * area/4. Which amounts to 4 times the original pressure! So if your hoses suddenly ruptures it is likely a leaking seal. Like your videos.!

[@LARaised]

I don’t even own any machines but love learning. Stumbled across your channel and love all of the info. You have a great ability to break down information to the point where someone like me can somewhat at least begin to understand it . Keep up the good work and the videos coming thanks….

[@phatcowboy76]

Nice video. Simple and straight forward. A very informative video. I'm an industrial electrician but i have worked with mechanics who know hydraulics. The swivel is very straightforward in how it works. It is an ingeniously simple device that works well.