Hydraulic Cylinder Repair Part 1
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- Опубліковано 9 чер 2017
- This is 2" bore cylinder off a tractor that is need of some repairs. It come in with a leaking seal but I find a few more problems along the way. This is part 1 of a two part video.
Tear down, inspect, identify seals, and machine a new rod. - Наука та технологія
I’m glad I found your channel. Just got hired at a shop that services and repairs cylinders of all sizes. I’m going to be a trainee and I can tell your videos will help me a lot.
Glad to see this video. Long time ago I worked for a machine shop that built hydraulic cylinders. This brings back lots of memories. Wish I would have stayed with it. Loved the work. Thanks.
I've enjoyed watching you grow in your presentation on camera. Your workmanlike production of videos is impressive. Thank you for all your effort. Always look forward to ABomb Saturdays!
Adam Great info, I have a man lift with leaking hydraulics, will use your information to make the repair. Have never been afraid of working on something new, but have never worked on hydraulics before. Your machining knowledge is fantastic, We need more people who have this ability, your channel will help. I work with high school students (not a teacher), and will have them watch.
Great work as always Adam. I would be very interested to hear you talk about the measuring process and procuring the seals. Your a great communicator and I'm sure others would appreciate it as well.
Thanks for your hard work on this great channel.
I find it so amazing that you can make threads like that. One would think it could only be done with one pass or with a die, multiple passes seems like it would cross thread or try to make new threads in a different spot each time...especially since it is at high speed like that, crazily amazing!
Craftsmen like you helps make a great America! Thanks for sharing!!
I like the hyd rebuild videos, nice job. Many times in the field when a cyl. rod would get gouged but still straight and not leaking I would clean up and grind out the damaged area and fill it with an epoxy product called Belzona to keep things running without damaging the seals till we could shut the machine down to repair it properly . Many times the repairs lasted for years like the side shift cyls. on the blade of a grader that didn't see a lot of use. Just reminiscing about day gone by. Thanks, Ed K. Cleve. Oh.
Thank you for the video. Just used it for a refresher because I am doing the same repair and rod fab as you for my son's BH stabilizer cylinders. Ed.
I can tell you have been doing this for while, as you make it look real easy. Nice video.
Great job. I like the idea of doing my own work. But a machine like that would set you back a couple of dollars,not to mention training. Very informative,knowledge,and skills. Looking forward to part 2.
Great video, Nice to see a guy on youtube who actually knows he's stuff..
It always blows my mind on how little damage will cause a problem and the environments that these machines work in. They are tough. It must have been hit pretty hard to give the gouges in the rod that we see here. Great video.
Manual lathes are amazing machines. Great workmanship too!
love your vids abom! i see alot of these seal failures at work on my dozers, diggers especially as i work in a hard rock quarry. forever change seal packages hahahahah
THAT WAS A VERY LEARNING VIDEO FOR ME. THANKS ADAM.
I like your vids, reminds me of stuff I used to do. THis takes me back to when I worked for CBL Ltd. They never had a machinist working for them before and were sending cylinders out for repair until I came along. Saved them £170.00 a time (in 1996 in Britain) Mini excavators get severely abused, I spent a lot of time repairing them (Site Service Engineer sounds a lot better than the reality-LOL) Oh, 9.3 thousandths isn't a measurement (even though I know what you mean) should have said just over 9 or more accurately 93 ten-thousandths (Semantics, can't help it I'm British)
Great video. I used the same material for the cross head pump on my steam engine.
Adam, really enjoyed your video thanks for sharing.!.!.!.
Love the hydraulic videos because it's something i don't really have much exposure too. Always good to learn a new aspect of the trade.
+Manny Calavera Thanks. I'll show all the work I had to complete on this unit for a repair, something anyone with a workshop and proper tools can do themselves.
It's awesome how u make everything look so easy man.
As a metallurgist, machine work fascinates me. I wish I could have been a helper when I was young.
Good project Adam and nice video.
Another great video thanks Adam//
ua-cam.com/channels/_GbYSHgKJL3g4J1aZ-RBSA.html
Great video! 👍🏻
Thank you for the videos.
Awesome job man. So satisfying seeing this.
Love your videos! thanx for sharing
Thank you for the information on the parts and stock rods
Another great video Adam. I wish you would've mentioned something about your method of threading without a relief cut. Very nice job. Good luck on the 4 jaw at the bash. 👍
Great set of skills!
Excellent close up photography Adam.
Thanks
Awesome. Thanks for the quick education!
Great video as usual! Also, like the new intro and outro music
ua-cam.com/channels/_GbYSHgKJL3g4J1aZ-RBSA.html
That was a good show again
Looks good Adam, good to hear your thoughts on feed rates.
well done Buddy!!!
You are a master. I know because you say, "I will have to check that to be sure..". The book smart engineers can give you mathematical figures all day long. Men like you, know how to do it. Let's get the job done and then we can give you the equations later. We see it in our minds eye. Some of the best cannot even describe what they are doing or what they "see". They just do it and they are really good at what they do. Articulation is in your favor. You are so good, Abom79.
Another supplier of hydraulic rod and tube is CRC Distribution in Robertsdale, Alabama. They have cylinder components and seals too.
Man you are good. When I grow up I wanna be just like you, only better looking.
Very nice, thank you for sharing.
Love your hydraulic videos! Very well produced and informative.
If you need another supplier for rod and tube, look up a company in Alabama called CRC Distribution. They also sell seals and custom machined seals.
Subscribed now so I'll catch the rest of your videos! :)
They’re a 45 minutes drive from me. We use them often.
Nicely done! I'm still amazed at thread cutting on a lathe, how do you get the timing correct? I know with CNC it's timed perfectly but on a manual system I have no idea.
Great job on machining . A great way to make money too.
It looks great
Awesome video - would love to get pricing on having you repair the tilt cylinder on my Cat 252B skid steer. Some of the chrome on the rod has come off and messed up the seals and it’s leaking.
Surely if the run out on that shaft before machining is 1, thousandth at the end and then close to the chuck. It must be the chuck running out ?
I wonder if you could clean those gouges, burn them a bit to get any contaminants out, then put some kind of metal based resin (i used one once to glue an very, very old lamp, it contained brass particulates). I mean, in theory, since it's such a small area, it will never wear (not significantly) and at the same time, it will help keep pressure when the seal comes over. PLUS, that way no dust or crud can get back in the hole, and won't further score, or damage the seals.
Compared to machining the whole thing, on the cheap, if it would work, that'd be a great quick fix.
+aserta A quick fix like that is to use epoxy. I'm sure some other metal bases epoxy would work just the same.
Awesome Video Adam! I've got one question about the change of cutters. Did you after each center it?
If you have time in one video, can you explain how you figure out and set up the lathe to cut the threads? Complete layman here, just interested in the process. Thanks
Fantastic!
You mentioned using oil for a better surface finish when threading, where are you setting the insert height? Or would it even matter in this case? I see a lot of different thread pitches but no one talks thread depth or the different types used for stronger load hold. I used to measure my thread depth and thread hole to within .002" that way there's less movement when it bolts together. I just like that feel when I'm hand fitting them together plus I feel the load is not tilting the nut to one side there by giving me the biggest nut to surface contact spreading the load.
Good video, Thank you!..
nice working
i use thin brass strips between the jaws and stock, works really good.
i use emery cloth cloth towards the shaft
@9:22 after showing us how to slide the rod into the chuck without scratching it I waited for you to use soft metal to grip it but it didn't happen. Did the jaws not mark the surface?
Nice!
Hydraulic Cylider Repairing Very Deficolt Adam
Nice job! What would cause the rod to be so badly scratched?
I run similar feed rates most of the time. Good to know I am in the ball park. :-)
I run 7 thou roughing and 3.5 finishing. All the little 10 inch is willing to push. :o
Not sure which lathe that is, but really sounded nice and quiet. Is that new bearings on the spindle? Great video as always.
Abom discusses machining new rod which is just the thing we need to drive down prices of a new cylinder. I'm getting ready to rebuild a pair of 30 year-old floor jacks since they raise higher and go lower than the nice aluminum HF ones. Where can I buy reasonably priced kits?
nice video thanks
EMIDIO DE VENEZUELA GREETINGS
WHAT TYPE OF AXIS IS USED FOR HYDRAULICS
Can you repair gouges in the rod by welding or spray welding, and then turning it smooth?
Do you typically machine threads without a relief? Is one way harder than another? Thanks for all the great videos!
Vince Ciotti I do then both ways. Without a relief is just a bit faster because your eliminating one op, but you have to watch it closely and disengage at the right time each pass. If you use a mag base indicator on the ways you can watch the indicator and back out in the same place a bit easier.
Hello! I do enjoy to watch your videos. Gonna ask question what I haven't find answer yet - why don't make hydraulic cylinders from stainless steel - no more rust problem...
Some hydraulic cylinders are made with stainless steel chrome plated rods and stainless steel tubing. We sell both.
How do you cut the case hardened Rod? I ruined a power-hacksaw blade in about 1 second on a chrome bar. Also, 13:49, man did you stop that perfectly.
Hope you're still reading these... How are you backing off that threading tool so fast? Good video by the way.
Hey Adam, a have a question on my cylinder rebuild. I'm rebuilding a 3 5/8 diameter mast cylinder on a Hyster H100XM. It is pressure in gravity down. The problem I'm having is trying to get the shaft back in the tube. Its like its vapor locked or something. I Had to use a come along on it to get it down the 4 inches its moved. I wouldn't think there would be a check valve. Any help would be appreciated.
Hey Adonis, Great video! My question to you on the feed rates is is that for carbide only or for HSS also? Thanks and keep up the great work!
+John McDonnell Feedrates I was talking about can be applied to both, but some carbidecinserts are made for much heavier feed rates.
Could you turn the shaft down to eliminate the scoring then make a new gland to match? Would it save any time or money? How much?
Nice machining!
....13
To cheaply or quickly get someone going, you wouldnt do the spray metal technique? Take it down below scratches and build it back up? Just wondering. Talking about Fernandos hydraulic cylinders.
I’ve got a small farm mini excavator that has a cylinder with gouges, if I wanted to find a shop near me (or you, I’m about an hour from Tuscaloosa) I would love some advice on getting a replacement rod or sending off that cylinder
Love the vids abomb. How long would this whole job normally take once it's on the bench off the machine? Thanks.
Dented Robot it all depends on what all has to be done.
Quite surprised you didn't use any packing for the chuck jaws. Hardened jaws on a chrome rod. Any damage from them and you are back to square one. But good accuracy from the chuck. I use some ally strip's between the rod and jaw :)
+Cnc Appreciator I machine chrome rod everyday and know how not to scratch it. The smooth jaws are safe unless you get stupid with the cuts. The deep serrated jaws do needs pads between them and the work though.
How come you don’t do a little undercut these threads run into like you do on many others?
That a Boy Abom!!!!!!!!!!!!!!! Could not done it no better then my self. I have a Lot Hydraulic Tools and Machines for sale.
how many rods have you ruined learning how to make threading look so easy? nice video sir!
I have a hydraulic cylinder is really stuck together how would you get it apart
awesome!
Hey Adam, nice work as usual. Do you have any idea if Scot Industries will sell cut off lengths of chrome rod to individuals? I'm not too far from one of their locations.
+tridium6111 I know they do sell cut lengths of everything. Might have to call and ask.
I think some states have outlawed oil dry because of dust. I think Arkansas being one of the states.
question: on the original rod with the dings in it - would it be an option fill the dings with a couple passes with a welder then machine them back down on a lathe? ..or is there something inherently wrong with that approach, for instance, the welding heat would weaken the part ..or something else?
thanks - love the channel.
There are two reasons why that would be difficult. The first is the welding heat; welding just in one area of a shaft can cause it to bend. The other is that a hydraulic piston rod must be ground, not just turned on a lathe, as the rod gland needs a very smooth surface to seal against. And any hydraulic rod must be chrome-plated; the weld would rust, eventually.
Where do you get the seels and o rings ? I have old case dozzer that need fixen i cant get the seels by case part # on line
I know there is the quality consideration, but how on earth do you stay competitive on the price at all when he could go to harbor freight or get on ebay and get a whole new unit for only a fraction of what it cost with you I am guessing? Having said that, thanks for sharing your work with us.
Adam; good video again. Hey, I noticed you have an Enco tool post . I just bought a Harrison M300 lathe and it came with a Klopfer tool post. This seems to be identical to your Enco. I am looking for a supplier for the tool holders. Who are using to source your tool holders? Anyone out there with the same problem, the 40 position Multifix tool posts are great but who supplies the tool holders?
John BURKE
This a prime example of when to and when not to. Unless they are damaged beyond repair they can be gouged with an angle grinder to make somewhere for weld to go and hit with a chrome-moly stick electrode and ground back and polished and look as good as new and call it repaired.
like its only takes a moment of your time on an angle grinder gouge out the places needing repair, wipe it over with some thinners and clean the oil off, hit it with your chrome-moly stick electrode/s, grind and polish it and call it good enough.
on a side note hard facing stick electrodes for repairing earth moving equipment among other things, they have a very high chrome and molybdenum for hardness and abrasion resistance and are ideal for said chrome rod in hydraulic cylinder. just dont go lifting your helmet up straight away to see your good job you just done the slag pops off very quickly after a weld and can jump in your eye very easy even like 2 - 3 feet away!!! ...
I am not surprised Fernando went with a new rod. He knows hes got one of the best working on it and that cylinder will be better than new once you're done with it.
Side note, what is Fernando that you rebuilt those two red cylinders for many months ago or was that another buddy?? I can't recall.
Going to be a fun little series again! Thanks Adam!
Side note as well, I am impressed with that chuck Shars sent you. How are those calipers holding up? I am thinking about picking a pair up.
+Brian Streufert Yes it's the same Fernando. He has 4 tractors and other pieces of equipment. You could consider him my step dad even though he and mom aren't married. He's always there to help me when I need it and safe for me. Example, I recently had to do some remodel/repair on my patio and he let me borrow his large dump trailer which was perfect for hauling off all the debris. This repair is my payback for that. The chuck is doing good so far, but we need more time to see how well it maintained. The Aventor calipers have been great! No problems, smooth silky feel.
Hey Adam, could you spray weld over the scratches then bring it back to size in the lathe?
Or is that too much trouble for the money.
It's a patch job and for a rod that's easily replaced, no need it fixing it that way.
I've seen people hang off a 10' cheater while others heated and beat the cap off a jacked up ram from a dump truck. Hard work.
roscocsa We have our bad candidates in the shop. Sometimes no amount of heat and beating will will them apart. When a threads galls, time to cut it apart.
Stuff like that makes me glad I sit at a desk for a living now. Sometimes. To be fair I was working in a really really reeeeaaalllly low end shop. So 90% of the day was grease and coal dust up to your elbows, sledgehammers, and cranes with broken brakes.
I remember doing this kind of work when I was 15 at school. Now I'm 39 and I am clueless regarding machining on lathes.
ua-cam.com/channels/_GbYSHgKJL3g4J1aZ-RBSA.html
My third video and really enjoy watching
Would it be any good to weld damages and machine a new surface on a true rod ? I've got one with rust cavities on the most outer part messing up top seals and wiper
You could buy a replacement chrome rod. We cut them to any size you want and sell them on our website.
my gosh i'm spoiled by cnc... both end of a chrome rod turned to size with thread relief and 4 milled flats on one end, programmed and run in 20 mins. 4" piston with id thread, 1 id groove, 3 od grooves, and 2 spanner wrench holes, 30 min setup 12 minutes per cycle.
Can anyone tell me precisely what type of metall that rod is probably made of? And where to buy a rod with perfectly round circle (apart from scott industries) Thx so much! (Is it cromoly?)
I wish I could send you the bucket tip cylinder on my Kubota BX... at full extension, the rod can 'wobble' a few degrees.. the bushing needs to be longer. At least it does not leak and the shaft is smooth... So far its just the rod gland that should be longer and carry a longer bushing to support the rod. Oh well, we are about as far apart as we can get and still be in the USA. One day I will probably have to just buy a new one.
The bushing sounds like a small part... ship it to him?
+Jennifer WhiteWolf Sounds like the original rod gland is worn and needs to be either bushed or bore and install a wear band. As long as the gland and position are the correct fits it should be working as designed.
Abom79
As a low cost tractor, I am guessing there is either a plastic bushing insert, or perhaps none..just using the material itself as bearing surface. I am now careful to use the tip at less angle to not go to end of stroke as often. This autumn I will pull the cylinder. In the meantime i can buy the rod gland rotating tool I need and a seal/o ring kit. I learn SO much from your vids, really appreciate your training! This cylinder take down and rebuild video is a perfect example.
Abom79
Also really enjoy the food vids! I now subscribe to several BBQ channels thanks to your introductions!
DSCKy
This fall i will pull it apart. I know how now! If it needs machine work I will ask Adam if I can send it to him.. Given the nature of loading on the cylinder, if the gland were longer, with more bush area between wiper and seal, it would be much better. There is still some rod length available when fully retracted, so it could theoretically be a longer gland for better support at full extension.
Hi Adam,
Could you tell me what insert you are using for turning. I have a hard time getting a good finish on chrome rod. I have been using a CPGT with .015" radius, that gets a good finish when pushed, but on light cuts not so much. I am using a neg tool holder.
Jerry Long I use an ISCAR wnmg 431 ic 8250 TF on this job. At work I use the same only in CNMG shape.
Abom79
Thanks Adam, I'll give them a try.
Abom79 what does the IC 8250 TF sand for Adam?
Just Google IC 8250 TF
Don't the chuck jaws mar the chrome finish? I didn't see brass jaw covers, so I'm curious.
+BigMikeOregon They can mar the chrome if your not careful. Depends on the type of jaws being used and how much pressure is applied.