Installing a hydraulic thumb on an excavator with 1 way aux circuit

We install a hydraulic thumb on my samsung 130 excavator. The machine only had one way hydraulics, so I had to install a two way electronic valve amongst other things
www.bedrockatt...

[@calvincoolidge5545]

You need a cross over relief valve between the lines connected to either side of the cylinder. This is the same type of valve used on the angle cylinders on snow plows, except you need one with a larger port size. This will allow fluid to pass from one side of the cylinder to the other if the relief pressure is exceeded. Most cylinder catalogs have a table that has the max bucking load for a rod diameter and length for pinned ends. Take that number and divide by piston area to calculate your relief pressure.

[@wxfield]

These videos are precisely the reason we lease our heavy equipment on our farm. No messing around, line-up the jobs to be done, get the equipment..do the work. Equipment goes away. Return to farming. I hated doing this work when I was a kid on my Dad's equipment. The machine shop, and support tooling was also so expensive to keep up. I can't remember even a month of my teenage years when I wasn't asked to make a "quick trip" to the hydraulics store and pickup fittings or hoses.

[@jmuller86]

I dont mind working on the equipment, there is always something to learn and it is very satisfying knowing you can accomplish this stuff, when most people dont have a clue anymore

[@wxfield]

@@jmuller86 I understand that perspective. Mine is simply, get work done without creating more work for yourself.

[@The-Deadbolt-Deputy]

I enjoyed this. I used to work at a hydraulic specialty shop and the first thing they taught me was fittings , fittings , fittings !!! This man could walk around any machine and write down all the fittings (the stlye and the size and the angle ) and he was always rite. I learned SO MUCH ! When I was trouble shooting they taught me to always “follow the flow”. I can tell you also learned a lot. Thanks (Seth in North Carolina)

[@jmuller86]

yea there is alot to learn. I walked into a really good hydraulic hose and fittings shop near me and had everything all planned out and those guys kept right up with my demands with no problem, They knew exactly where everything was and even alot of the part numbers by heart. I was very impressed. I didnt just walk in with a hose and say I need it replaced. I came there with a list and walked out with every single thing being right

[@BhgMkj-vq5xt]

❤❤7ិុ្៦😢

[@BhgMkj-vq5xt]

្១😢ុោោុុុិិិិិោុកោោឮោោឮិឮ😢❤😮❤😢❤ផោឥ😅😅9😮😮❤❤❤😊😊😊

[@thaotranthi8073]

​@@jmuller860:11 😮

[@AW-Services]

YES. Another video. Had to stop watching Diesel creek for this. Another great video Jesse and deep dive into hydraulics

[@nevillesmith9795]

😂shhh! dont say it out so loud....But I get you

[@alasdairdavidgray7316]

😂

[@toddlasalle131]

I had to finish watching Matt first then come over to watch Jesse put the new thumb on his excavator

[@AW-Services]

@Ripping That I was falling asleep

[@GlenS123]

Stopped watching diesel creek, never finishes anything

[@backyardpotentialllc5763]

My dad was an "old-time" operator. I don't know how he lived without a thumb. Can't wait to see you get this dialed in.

[@blakes9634]

My grandad bought 2 Samsung logging shovels brand new in 1994, a 210 and a 280. I was there with him when he picked them up with his lowboy and was there when he traded his 280 in in 2012 still in working order of course. He still uses his 210 around the property. Watching you working on and with yours brings back a lot of memories of him and I working on and with his machines. Great, educational video as always! Thanks Jesse!

[@HopYen-co6zl]

😊😊❤

[@HopYen-co6zl]

😊😊😊😊

[@RinaTamang-hk8gl]

​@@HopYen-co6zlv 😊

[@niteshrathod5507]

😊😊😊😊​@@HopYen-co6zl

[@rhondasweeney7271]

You had a few stumbling blocks, but you got what you wanted, and you designed exactly how you wanted it. Congratulations, it's functional, and it's gonna make you a lot of money

[@harveylong5878]

Overcoming the technical challenges is oddly satisfying isn't it Jesse. You made what you had to work with wirk, doesn't have any redneck hack feel to it. That coupler looked like a headache waiting to happen. K.I.S.S. often the best way to go

[@timdittmer3400]

Hi Jesse The reason the relief valve on the main spool wasn’t allowing the thumb to move when you applied load with the bucket is because the solenoid valve is dead ending the pressure coming back from the ram when it’s not activated. That’s why when you tried to operate the thumb while pushing with the bucket it moved as the solenoid was open it allowed the oil back to the main spool relief. Tee your pressure gauge into the thumb pressure line and push on it with the bucket and check pressure. Do it with the thumb in a range of positions as when the geometry of the pins change so does the force. If the pressure is higher than the recommended ram pressure then it definitely needs a relief. An in-line relief between the solenoid valve and the ram would save bending the ram but ideally you’d use a 5 port cross line relief valve with dump as it protects the ram in both directions. The pressure in the bucket ram is irrelevant to what’s in the thumb ram even if they are the same size.

[@BenKempa]

This is excellent info.

[@rsmith2786]

Nailed it. Was just about to type out the same thing.

[@pedrolopesatc6776]

hi timmditmer,, u r 100 % right ... when selonoid A energizes it opens the return B to tank and also the other way around, ,,, when A and B are not energized both return to tank are dead ended. I just wonder about those tho 1/4 inch conections on the block,,, they can be either,👍 Pilot or to conect relief valves?

[@lyju8944]

😊

[@mehenapeto8481]

Hii

[@NealORussa]

Your solenoid valve is holding the thumb pressure. You may have bought a closed center block. Open center might allow it to go back to your relief valve on the machine's valveblock.

[@jmuller86]

it is an open center block but when the button is not pressed the valve shuts to hold the implement in place. Open center means the pressure line going to the valve goes to the tank, but the A and B port are still closed when the button is not pressed

[@NealORussa]

@@jmuller86 ahh 10-4, I ran a machine for a couple years with a thumb and no relief valve. I was just mindful of what I was doing and never had an issue. The thumb was on a foot pedal though and you could just barely crack it while you curled the bucket so that you could curl the bucket and push the thumb open at the same time to change position of how you were holding something. Or vice versa I would push the pedal to close the thumb while barely cracking the joystick right to open the bucket with the force of the thumb. That would be hard to do with the non-proportional setup you have.

[@eddiemortontapman7252]

What a pain , but what a productive addition to an older machine, congratulations on your success with that upgrade!

[@70sdude68]

Awesome vid Jesse! I find it weirdly satisfying watching someone working on hydraulics and getting it to work.

[@mdruryscs]

Jesse, you're just a brilliant engineer. And equally important, you are patient and remain calm when problems arise. Thanks for all the awesome videos and education. It's a real treat to watch people like you do your thing.

[@hemibreath]

It’s the electric spool valve that’s overriding (bypassing) the pressure regulator. Needs to be after the valve (both lines). If you bump the thumb (outward or backwards) it will over pressure. Damage the gland nut or pull the piston off or blow a hose.

[@hemibreath]

Find another used bucket cylinder

[@jmuller86]

what's wrong with the bucket cylinder?

[@SantaClaw]

As a Curiosity, I believe Volvo bought Samsung's Excavator division in like 1998 - so many of the newer Volvo excavators where more or less re-branded Samsungs, I once drove a brand new Volvo EC 140 off a trailer, and it was more or less an exact copy of the last gen Samsung machines.

[@Sabiawan]

😢❤❤❤😮❤❤😊 I❤❤❤❤❤❤

[@oscara.8176]

Thanks for recording your journey, doubts/mistakes included. Learned a lot.

[@SparkysGarage]

Good catch on the relief valve. It can definitely bend your new thumb cylinder. I think the relief valve doesn't work because the solenoid is after the relief valve. Id put an inline relief valve between the pressure side of the thumb and the solenoid. Awesome vid as usual brother! Also I agree with losing the quick coupler and sticking with one bucket for the most part and the thumb. Look into a yanmar sv100, great machines!

[@maxpat82]

totally..@Jesse Muller: I had the hydraulic shop told me to put the inline relief valve on my thumb circuit. cost of the valve, 2T and 1 hose...and them adjust the relief. and you only need one on the extension pressure side(what the bucket push on). There won't be much situation where a relief would be on the retract side ;)

[@tiredoldmechanic1791]

The valve that controls the direction of the thumb shuts off the system so the pressure doesn't get to the relief valve. A Prince DRV-2HH crossover relief valve on the lines to the cylinder would allow oil to bypass from end to end of the cylinder to limit the pressure when the bucket pushes on it.

[@ranikhairani7519]

PT ni

[@PinkiKumari-ri9og]

pl

[@wirenut003]

Wow who would think how much all the fittings and hoses cost very expensive ordeal, nice job hope it works for a long time.

[@eugenejohnson5822]

It is great to see you doing the actual work, as a-pose to just show the finished product.Good stuff!!

[@SuaHo-rl7kg]

Ljjk

[@genegoodman5233]

You need an inline pressure relief valve so if the bucket pushes more than the pressure setting on the thumb it will open and let the fluid flow back to the tank. I don’t think you need more than one. I’m saying a valve that is bolted to the machine and the hoses fastened to it. 3 fittings pressure in, pressure out, and the bypass to tank. I think this is what you’re saying. When you’re working with hydraulic fittings and hose don’t throw them on the ground unless they are NO good. If a little bit of dirt or trash would get inside the system it can cause big problems. Glad you got her working, let’s go make some $$$$$$$$. I see the bucket coming in and out, I want to see the bucket stand still and the thumb moving to pick up and drop stuff.

[@transmitterguy478]

I got all the way through Jesse, excellent job! You really added a lot of flexibility to that machine. Next, build a blade for the front. Maybe you could utilize those small ports on the new valve for pressure relief valves then tee them into the return to tank hose.

[@johnb.2936]

That Samsung excavator seems to be a good runner. Im sure you will figure out the bypass valve thing. Like you said, maybe one of your viewers knows something that you can try. Very interesting video. Thanks Jesse.

[@markbrown6236]

Nice work, I'm calling that thumb the "rock crusher".

[@ArizVern]

RETIRED, 78, FREEDOM, USAF, VFW. YOUR PLASMA TORCH REALLY GETS A WORK OUT WITH YOUR PROJECTS.

[@robertgraham3747]

If you want the relief valve to work put a switch in to turn the supply valve on when your using the thumb or wire it hot.

[@iangant3393]

Best two hours I've spent on utube in ages great video Jesse keep them coming

[@rufsanabegam6122]

P . L9l lo

[@donnal.oglesby4806]

Jesse, Think the best thing you can do is get rid of that quick coupler, and go with the thumb for THIS machine, and as you stated, when you get another machine, can get what you want, with a quick coupler and hydro thumb. with the adjustments you made along the way, looks like the thumb is working out really well.

[@edwardseth1230]

Jesse when you open the bucket after installing the thumb at 1:46:45 you can hear a clink sound.. then look at the hydraulic cylinder tube on the outside/front of the boom.. its slightly bent inwards... and then again when you're pulling the dirt.. at 1:54:03 the hydraulic tube looks bending outwards a lil...or atleast it looks like it.. please check other wise.. its a bigger problem later down the line.

[@philrusciano115]

this was by far the most interesting and informative video I have viewed in a long time. Thank you: Jesse.

[@Anthony53106]

The Company I work for makes kits to do what you want, but it would have cost you more than you ended up spending. I enjoy watching you solve problems.

[@JERRY-xb6vy]

Hey Jesse please fasten that one quick coupler line on the left side of the boom before something breaks after all that hard work, Jerry

[@SantaClaw]

I'd like to mention 1 issue you had, is that the pressure off your gauge bled off on it's own. That indicates an internal leak in your valve. And weld your bucket. It's torn.

[@AnhNong-lz5cq]

😊😊🎉🎉😊😊😊😊😊😊😊😊😅😅😅😅😅😅😅😅

[@matthewward631]

Split and stacked some locust today then set up a repair appointment to replace my malfunctioning hip. Not working like a young pup, but old dogs gotta work. Life is good.

[@oby-1607]

Absolutley need a pressure relief valve on the extension side of the hydraulic thumb cylinder. If not, the bucket will overpower the thumb and bend the cylinder of the thumb or break something.

[@douglasmorton6121]

That thumb seems to work well. Not a lot of slop and rattling like fixed thumbs seem too. Those power beyond kits are common add ones with tractors, often for grapple attachments for brush work. Nice video Sir!!! Stay Safe!!!

[@jamescole1786]

5/6/23; ..8k for a thumb, lots of hdwe/hoses + yur time! ...but ya know, if you need a thumb for existing + future jobs, the upfront costs $$ is nothing, it's ability to do the jobs that makes you the $$ is everything. Congrats on your ability to analyze hydraulic flow, fittings (different types) & install/weld/fab brackets-bolts & get this project tested & working/ ready -to-go!! Great long but rewarding video. Anxious to see you use yur 'new' thumb on future projects. Stay safe & carry on! ⚙️🔧👍👍👏👏💪✅️🍺😊

[@ShuhDonk]

These are my favorite types of videos, these are the kind of videos that got me watching yours and Andrew's channels.

[@billyhaddock5540]

Congrats Jesse Muller on finally getting the Hyd Thumb on and working good for ur Excavator. great Job

[@carloskawasaki656]

Thank you,awesome, best hydraulic training course,I learn a lot, 👍👍👍👍

[@kaydog2008]

Great to see your T-Rex getting a lower jaw. GJ Jesse!😎👍

[@billsmith5166]

That was a big job. Good work. The money that you spent was also an education.

[@jonrusso4720]

I have added and conformed almost over 2 thousand thumbs in my shop now too,,not a easy job now too,,wish u great luck yoo

[@jmuller86]

man thats alot of thumbs, I bet you know every detail by now

[@davidbean5807]

You can add flow control valves to adjust speed. 24 years in maintenance working on hydraulic injection molding machines. With special training in hydraulics. As well as pneumatics, electronics, and injection molding.

[@robertironside3166]

Glad to see you get the thumb on the samsung. More options you have on whatever job you're on. Awesome sauce!

[@zephyrold2478]

Thumb up, I would put a cover over the hole valve, those electrical connectors are not water proof, a good old handmade thumbs up.

[@dannystubblefield5478]

That's a CLEAN install Jesse

[@ThePaulv12]

Re electricals, there is such a thing as a changeover relay. Those relays have 1 extra output terminal and activating the relay swaps them. Non energized the relay has a default pass through out of one of the pins, then you energize the relay and it swaps to another circuit acting as a diode for the default circuit eliminating backfeed. They're readily available at auto parts stores but just check they can do 24v. I use them to activate another relay, so one circuit is disabled and the other activated with the flick of one toggle switch. You just wire it whatever way you want and can even use them in pairs to do all sorts of things. Switch the earth wire if you're using a toggle switch on any vehicle that isn't wired earth return. It's good practice but I admit many auto manufacturers don't do it like this LOL but try to if you can. As mentioned you can emulate a diode with them and they give you other options too like using a conventional and a changeover together. You just have to sit down and draw it out on a piece of paper. Also 3a diodes shouldn't be too difficult to find surely. Thing is, the current at 24v is half the current at 12v so you probably don't need a huge diode here.

[@alangarratt7421]

Best thing to watch here in the UK today - beats the coronation.

[@steveanderson4768]

Here in the US could give a shit less about your coronation. That’s why we kicked your ass in a little bitty war to get our independence from a monarchy.

[@Lee-At-Green-Pheonix-Rc]

Hell yeah I'm a fellow brit can't stand the royals 9nly one 8 liked was Diana

[@HangTran-cl9kf]

​@@Lee-At-Green-Pheonix-Rc q1

[@13panda13]

How would you know? I doubt you seen the last one to judge by.

[@transmitterguy478]

Just use 2 diodes to activate that original one-way valve when you push one of the two new switches on the new control. If you have an old tv, there would be diodes in there that would work.

[@jmuller86]

thats what i did

[@transmitterguy478]

@@jmuller86 I'm only halfway through your video, good work! You're wiring up the solenoids now.

[@13panda13]

​@@transmitterguy478 does your wife complain about going off half cocked? 😅

[@transmitterguy478]

@@13panda13 YES! All the time!😉

[@jeroen1836]

8 grant is a lot of money for this thumb but it has give you a lot of extra experience. You’ll never know when you need these experience for a next time 👍👏👊 Tnx for sharing this 👍

[@senankeane]

What I would’ve done is put an on/off switch in the cab for the original valve which would turn on and off your aux hydraulics. Then because that valve is on, the original relief valve should work

[@hengchanna]

😊

[@horstszibulski19]

I was with you the whole time, nodding to your expalanations and give even advise...glad it helped...! 😂😉 Great video on a big project. Only thing that has to be done is to fix the coupler/valve assembly to the stick, that thing dangling around and shifting under pressure would make me nervous, that can't be good for the upper fitting on the cylinder...Do you still have the parts machine sitting on your front yard? Maybe you could harvest some attachment points from that... Thx for showing, it was a joy to watch! 👍👍👍

[@Box545x39]

Great vid Jesse. You could replace the shutoff valves with ballscrews to fine tune the thumb speed if you weren't ever happy with it.

[@brittcofarms5620]

I'm old and been at this a while but you are a smart fellow for your age, keep up the good work so I can learn from you!

[@irakozak1]

You need what’s called a Zener diode to eliminate backflow of current. The other way to do it is a multichannel PLC to operate multiple solenoids at once

[@terryrogers1025]

I have not been following your channel as of late, but to be honest, I think you did an excellent job of setting up the thumb . You got an education on hydraulics, some electrical/ electronics and fabrication. I worked on hydraulic systems in my former life and all I can say, if its not the way you want it, you have the skill set to make it fit for your application, thanks for the tagalong video young man.

[@seanwalsh999]

I can see why you wanted a quick coupler, bucket changing shouldn't involve two men and a sledge hammer, what a fight that was.

[@jarvisautofabrication284]

That relief valve is not electronic, it’s strictly mechanical. Unscrewing it reduces the pressure only when pressure is demanded. When no control action is being used, that valve block is in the closed position on all ports. The best way to overpower the thumb is to curl the bucket and retract the thumb at the same time. Other than that the valve is in the hold position and if you can overpower it, you would have other problems. Right now you just adjusted your thumb pressure way down. If you want to slow thumb motion, you can put an adjustable flow control valve in. It’s just an adjustable needle valve and are super simple and strictly mechanical

[@jmuller86]

Yep. I figured out that directional valve is blocking the flow when not in use right after this video, when I bent that rod into a u shaped piece. Am doing a follow up video to fix everything

[@MaverickandStuff]

You may be able to use those 2 test ports for relief valves, or the main valve could probably just be left on. The new valve I imagine just bypasses when not being used.

[@Alan_83]

11:29 I wonder if the pin is bent and all that slop is from pushing the bucket into the ground to rotate the machine. It can’t be good putting that much load on the linkage.

[@henrymichaelwilson8107]

You never see those thumbs over here in the UK. We seem to manage without. We have grabs that fit the quick hitch. It's so you can change the buckets.

[@PiazzaWoodWorks]

Epic upgrade, every machine should come with a thumb as a standard

[@oisforoffroad]

1:13:00 I recommend Dielectric grease on electrical connectors to keep them corrosion free for years to come. I use "CRC 05113 Dielectric Grease" on my offload vehicles and tractor.

[@treeclimberman3337]

You need to mount two short cylinders to the top of the bucket on either side of the thumb, Instead of the long cylinder, like a skid steer brush grapple facing you instead of out front, so it will never bend a cylinder. Or need a relief valve. And the cylinders be on the outside of hitting anything

[@jerryb953]

Awesome job Jesse. You could always fit some extensions on the thumb tines, but I'm sure you already thought of that.

[@brentking-gmailking2570]

Great video Jesse. Congratulation on having your thumb. Thanks for sharing and have a great weekend.

[@MrAtcjohn]

well done,if your worried about bending something,then maybe some kind of inline back pressure relief valve will hopefully fix it

[@johanlende4751]

You need to put a reliefvalve on the piston side,just use the testport on the new valve and drain to tank.

[@anzicek]

Came here to say this. Good call.

[@jmuller86]

I left the one port open and no fluid ever came out so i dont think either of those tiny ports do anything. I was thinking a crossover relief valve on the piston side next to the cylinder. the excess pressure would then dump to the gland side and I would only be dealing with 1/2" hose there instead of 3/4, less expensive

[@johanlende4751]

Yes,you could do that but then you could end up with a oil volume problem since the piston side is a lot bigger then the rod side. I’m surprized no oil came out of the "test port" Do you have a datasheet on the valve Block? Ideal solution would be to have the valve you have with all ports open to tank in mid position and have a overcentervalve on the cylinder,but now you have to work with what you got. Btw,love your videos and always look forward to the next. Keep em coming. 😊

[@brent9393]

The electric over hydraulic valve come from bedrock attachment too?

[@jmuller86]

@@brent9393 that was summit hydraulics. All the fittings came from hoseandfittings.com, they are the cheapest around and have everything you need

[@tombrown3574]

Would like to see a pinky installed with its own switch so when you take scoops with the bucket you could flex that pinky up like no other.

[@CranialAccess]

This was so interesting! Your planning/ research abilities are outstanding. I so enjoy the long videos where I can learn from a great teacher. Thank you so much!

[@johnnvenema5335]

get a cushion valve that are used on tractor dozer blades to keep form braking the angler cylinder.

[@takedeadaim8671]

I would call the summit but I think because you connected the return from your one way flow to your summit solenoid instead of direct to tank it’s not letting the thumb cylinder retract unless you use the buttons. I had something similar to that when I put my valve on.

[@miloradpudja1501]

One more grate job done Jesse! Quite challenging though. I have no doubt you will enjoy thumb addition to machine. It makes whole a lot difference and versatility to what you can and can not do, with vs with out of it. It will definitely pay for it self. I love having hydraulic thumb on both my excavators. Strong, friendly suggestion, from my experience, see what you can do to make those hoses for thumb as tight to boom and piston it self. Having them spread so far as it is now, you will have nothing but trouble on job sites, breaking them and damaging them.... It would be also much better to flip that piston 180 degree so your hose connections are between boom and piston it self, rather then way is installed now at bottom side of piston, just to keep them as protected as possible. Best regards.

[@merlepatterson]

If you do install an adjustable in-line dump valve, you should only have to put it on the thumb retract pressure side of the line (which is the side of the line the bucket pressure will be pushing against).

[@jmuller86]

yea I could install a crossover relief valve right next to the cylinder. or just an inline relief valve by the directional valve, and tee into the tank for dump

[@merlepatterson]

@@jmuller86 yeah, either way, it shouldn't be too much of a chore.

[@merlepatterson]

@@jmuller86 Update, saw the last video. Bummer. I feel for you Jesse.

[@tonygriffiths2485]

More enjoyment watching innovation defeat issues affecting the install of a thumb. Am watching a re run of James Gandolfini (R.I.P) as Tony Soprano and singing along "Got myself a THUMB !" :)

[@danslawncare8594]

When using a thumb you always put the bucket on the wood then roll the thumb into it so you don't put to much pressure agent the thumb.

[@mattverhelst8686]

False. Other way around. Bucket has more control to move slowly. Thumb first then feather bucket.

[@tomjohntig]

Great job Jesse, I hope someone can give you the answers you need to perfect the fittings. Tom UK

[@41-DMB]

👍A B I G thumbs up :) to you and all your hard work .

[@jmuller86]

It is a big thumb lol. That thumb weighs more than some cars by itself

[@41-DMB]

@@jmuller86 ❤️😂

[@ESPSJ]

It's funny how the companies that make the best quality stuff always seem to have the best service too. Bedrock must take a lot of pride in their work.

[@Naplesfrank154]

Jessie, my dad used to own an automotive parts warehouse (bigger than Napa) and he also made hydraulic hoses. You can pick up a hydraulic hose press machine for about $1500 plus assortment of fittings and boxes of hydraulic hose and make your own hoses to size. The equipment would pay for itself in no time. Plus, you can make hoses for friends at a discounted rate, which would also help pay off the equipment. Why don’t you do that?

[@Watchyn_Yarwood]

Great suggestion! I see more and more KZbin creators of maintenance and repair channels doing that exact thing. Like a battery cable crimper, it's a no-brainer.

[@hanumizatunnisa6336]

​@@Watchyn_Yarwood 😮q

[@OunKakoko-pu4ox]

ផលកម😊ចោល 😮😊

[@tiredoldmechanic1791]

Using annular cutters, you can "move" the holes sideways slightly. Even as little as 1/16th of an inch.

[@TheBigfella53]

great vlog, but jesse it will not fit or work ,hold my beer lads lol

[@billspencer7253]

When the oil in the thumb is trapped, the bucket cylinder has the ability to damage the thumb cylinder. You need to add a relief to tank on the thumb cylinder. It will also help you from crushing things you pickup. Set it around 25% system psi, around 500. Your going for the minimum psi to hold something in the thumb.

[@Watchyn_Yarwood]

Sure are glad to see you using Loctite 545! I have not had so much as a damp spot on a hydraulic fitting since I started using it years ago. And I don't worry about Teflon bits getting into hydraulic pumps and valves.

[@henrymichaelwilson8107]

Hello there. All 360 machines don't allow for a quick hitch. And some inexperienced person could dig the cab off. So I think you are going about it the best way. We are in the UK. We do these kinds of jobs our selves.

[@DirtBrute]

I have the exact same thumb on my cat 315 and it’s been great so far . No problems and works great!

[@vincentnofx]

Use a relay for the switch. Relays are electrically isolated (they use magnets on the inside).

[@stackfire9601]

You done a beautiful job on that thumb install there is only one thing I would change I would put a 90 on that line going to the thumb cylinder so the line doesn't stick out and get Hung up in some rebar on a demo or some crap like that. Im your newest sub😊😊. Im also Operator/ Superintendent from Alaska

[@jont9903]

I ordered a cylinder from magisterial hydraulics for my backhoe about a year ago. Pretty good quality for not a lot of money. Sucks you had to modify yours but your better off the way you did it.

[@Anders_HeymSR30]

What an ordeal! But as always you vanquished

[@tonygriffiths2485]

Looks like your ICF House is finished, maybe not, but am sure looking forward to the next video about it. Great thumb job, thanks :)

[@szki272]

Realistically you only need a relief valve on the extend line. Since likely the only chance for overpressure on the thumb is pushing on it with the bucket.

[@Jophlo78]

These machines look so realistic. It's hard to even tell that they are radio controlled!

[@michaelchamberlain4618]

That's why they gave you the bear ends on the end where the hook up to joystick.

[@NFSGamerful]

That valve on the end of the lines near the bucket is for when using open end couplings on the end of the lines, we used them in bigger machines and you close the valves, unhook the hoses and put the double plugs in on hoses and the machine. Also, closing that valve when hammering will ruin a hammer real quick, the most important thing with at least bigger hammers is the free flow return, we have fully hydraulic quick couplers (no connecting/disconnecting hoses anymore) and there's actually an extra hose for the return oil to the tank

[@peetky8645]

i want to install a hydraulic pump and cylinder on a shop made manual crane on a truck i bought..... any recs for what i need to just push a button to make the boom go up and down? what is single vs double acting? do pumps pump in 2 direction to raise and lower or is a valve used? thanks for any feedback.

[@jmuller86]

I think you could use a dump trailer kit with electric over hydraulics, it would come with everything you need to make that work

[@peetky8645]

@@jmuller86 thank you... i will look that up

[@cliffcollins4124]

As a master electrician surely you would have realized that a 2 way momentary double pole switch, very common, would do the job perfectly with 1 finger control ?

[@jmuller86]

yea but this joystick had that built into it, I didnt want some random switch taped to the joystick

[@jasonmorgan577]

The 2 smaller ports marked X and Y are pilot pressure and drain ports. You can use the X port for a pressure test port as it is connected internal to the larger pressure port and the Y drain port is essentially a just a smaller tank port.

[@Andy---ur3ez]

Good job I'm putting that together but because there's no relief between the solenoid valve and the thumb they make a inline that will work so you can put the relief valve on the clamp side of it which will release to the other line

[@cortcam664]

Can't those original shut off valves work as flow valves if there is too much flow for smooth thumb movement? Like partially open/close the shut off valves?

[@jmuller86]

yea I think they can