It's amazing how the power of a machine that can move mountains boils down to a few pieces of rubber and plastic.

Hey! I'm a seal design engineer, so seeing you show a seal catalog and size gland was very cool! All the information you had on sizing new replacement seals was great! I spend a lot of time in seal catalogues, so nice to see em show up here

Adam, I have dismantled hundreds of cylinders with similar problems, aluminium glands are frequently a problem due to corrosion and subsequent galling of the threads. Applying heat in my experience seldom helps, as you found You only have a few seconds to remove the gland before the expansion of the aluminium gland catches up and then exceeds the expansion of the steel cylinder and then the heat softens the aluminium and makes galling/seizing inevitable. My most successful removal technique was to support under the gland on a block of hardwood and vigorously hammer all around the thread area on the outside of the cylinder with a heavy brass or copper mallet prior to attempting to undo the gland. This breaks up corrosion and loosens any cold weld in the thread. If the thread starts to get tight when unscrewing apply more mallet.

ABOM is always at his best when he's fixing stuff or making chips.

I love, absolutely love, these actual machining videos. This is the "secret behind the curtain" that most Americans are utterly unaware of. Shops like Booth Machine Shop by the thousands, in cities big and small, working every day to fix the mechanisms that keep America going.

I thought it was too easy when you opened the first two cylinders ! Thanks for useful information.

Hey Adam, Heavy equipment Mechanic here. If you ever have a pin stick like that either torch the pin center out a bit or air gouge the center of the pin a bit and often times they come out. Once some of the center material is gone and the pin cools its final od shrinks and many times comes free a lot easier.

Seeing you applying heat to a hydraulic system like that, reminded me of a cautionary tale from my early days in engineering here in the UK. Following the Falklands conflict, during which we lost Royal Navy vessels, an emergency safety ‘flyer’ was sent out to all UK manufacturers. This was with regards to the use of Viton seals and what happens to them if they suffer an extreme heat event, such as being in a fire. Unlike conventional seals which char, Viton actually liquifies and being a Fluoroelastomer, it can release Hydrogen Fluoride gas AND, if you get that liquified Viton material on your skin, there was no other treatment other than to amputate the affected area! Whilst I acknowledge that Viton wouldn’t normally be used in the hydraulics you are dealing with here, everyone be aware - if you are dealing with any such equipment and you suspect it might have been in a fire (or you are going to use heat yourself to effect disassembly), take all precautions.

Aw thats awesome to get a surprise midweek episode of Abom!

i have missed these type of videos not hating on the cnc but these are what i do at my shop thanks for all you do

Adam, my sincere compliments for the introduction to the kingdom of seals.

Hey Adam, I know you said you don't like to paint, but your job on that Reed vice has held up really well!

We found that the best way to remove the aluminum glan was to lay the cylinder on an anvil and use a pneumatic hammer to rattle the tube against the glan to free the threads.

First time i have seen someone show a seal ordering catalog/technique. This is one of the things that makes your videos great.

As always thank you for the videos Abom! Very nice😀

Abom, glad to see you have come into the light with Milwaukee.

Glad to see the jobs coming into the new shop. Quite a range of projects but face it, hydrualics is your thing.

All this information is greatly appreciated. Thank you.

These are the best types of vids! Seeing the problems solving when things dont go right is by far the best content on youtube! 👍

Thank you for the explanation on looking up the seals! I am the new guy in a caterpillar hydraulic shop and what you just showed was a much simpler way than i have been shown. We often have people carry in a gland or piston from something they are working on asking for seals. I have learned many things from you over the last few years. Keep up what you do!

Brother god has given you a wonderful talent

Abom, your knowledge of tools and device components never ceases to amaze. Really excellent work!

There is skill in using a catalog. Nice to see you teaching this stuff. I've fired a bunch of new guys through my crash course on looking stuff up in catalogs and it's worth every bit of my time and the student's time!

Having those catalogues Adam, are like gold.

thank you so much for sharing the process of this, this will help me with maintaining my shop equipment!!!

Love this channel👍 and thanks for sharing you're knowledge sir

Very useful information Adam. Thanks.

Very educational video,Adam.Thank you.

Keep a steel bucket full of cold water, heat the barrel till the aluminum head expands then dump the whole thing in cold water, repeat 2-3 times then unscrew head. Bobcat cylinders, and Kubota cylinders are made the same design, standard seals American threads. If the pin type spaners don't move it right off put them back in the drawer and break out the pipe wrench, but only put one set of marks in the head! 37years in the same hydraulic shop

i learn so much as always, you are the man

Outstanding as usual. Real craftsmen.😎

Definitely a fan of the SNS series and this vid reminds me of them...awesome, show us what ya working with!!

I just rebuilt eight tie rod type hydraulic cylinders. When I got the the 7th one, I found out it had a bent rod. I had to break down and turn out a new one. The guy that built all these cylinders retired and is out of business. Looks as if I'm going to start making them in home. With supply chain issues and the fact that a lot of guys are retiring, I find myself having to make more items in house. That's OK, that's what I do best. I enjoy your video when I get a chance to watch them.

Thanks for doing this , I appreciate it!

thanks for this video! exactly what i needed!!!

Enjoyed watching this episode

good info but instead of having to machine internal parts check with Mahindra to get a couple seal kits?

great video thanks for taking time to show how you arrive at seal dimensions

I'd say that whoever had the tractor certainly got the use out of the hydraulic cylinders......about 110% in fact.

Nice to see someone working

Vice looks amazing...🙂(works amazing too)

great video. very informative.

Got here 50 seconds after upload! This is the kind of machining I’m used to seeing Adam complete. The new stuff is good too. I’ll take either as long as the filming remains this good.

WhErE’s ThE mAcHiNiNg This was interesting, thank you!

FYI, the ASTM/SAE standards for O-ring grooves max out at 5000 psi. If you very carefully choose your back up rings, and design your gaps to the absolute minimums and increase the o-ring crush, you can extend the pressures to well over double that number.

Only cylinders I get are the ones the hydraulic shop couldn’t get unscrewed so it blew my mind to see they are supposed to unscrew somewhat easily.

I know its seems easy to you with like hundred years of experience , But its fun to watch your hands on knowledge of simple things like seals and how the "interact" , like what they seem to be and what they are :)

Surely Mahindra, or a tractor repair vendor, has an all inclusive seal kit sitting on the shelf somewhere so you wouldn't have to machine the pistons.

Thank you for the walk through maybe the newer book has the seals you are looking for just a thought

A hydraulic test stand would be a nice addition to the shop, those cylinders seems to find there way to you!

thanks for the education

Love that Reed vise

Thanks Adam

I like how you used the angle iron to protect the fixed tubes on the stuck cylinder from the chain vice.

I would have never thought of a machine shop rebuilding hydraulics.

You can tell you have spent a good part of your life working on hydraulic cylinders by the way you work through that book.

Thanks Abom, I enjoy this type of video. I know it may be unnecessary for some of your viewers but I have never worked with this so if I do want to attempt my own service at least I have some chance of not sounding completely useless at the hydraulics shop! I am in Australia so unfortunately can’t use suppliers suggested. Cheers Mark

I've always had pretty good luck with getting the gland nuts to come off by using a little heat and break fluid as a lubricant on them. Laugh as you want but it works.

Thanks for sharing

Now that’s a vice!

I have several old vises and anvils. That reed vise is nice. I have one just like that Im getting ready to restore. I have a pat. Date Dec 24, 1912 105 reed I use daily in the shop. They are bullet proof!

That massive REED shop vise is an American made shop tool treasure, wonder if it came from a RR shop its a real beast-!!

Wow, that's alot of stuff to know... 🙂Good info... :-)

I am glad you know what the heck you are talking about because I am lost completely lost. I have fixed CAT cylinders seals but CAT had seal kits at their parts dealers.

"the blue wrench" i like that lol, added to my shop vocab

Thanks for your lecture! Very interesting. The stuck gland, would it perhaps get loosened if You tap the tube over the threads? Oxide and grime fill the treads and is pulverized by hitting outside the tube. I believe You to have more luck with this method than just heat! Regards PeO

Some people set up ridiculous studios for their shows. Thus guy could legit actually run a machine shop with all his props for these videos.

I've conquered a few cylinder glands that were that tight before and just applied a steady lower heat to the gland itself for several minutes, then just let it cool down for an equal amount of time, and loosened them. The heat will soak away from the gland into the cylinder letting the gland contract while the cylinder expands.

FarmCraft 101 did the very same job see his videos, Mahindra's answer when asking about seal kits was to recommend buying a new cylinder, they are cheap, however generic seals are available from any seal supplier quite easily.

Damn Abom, Cylinders-1/ Abom-2...

very nice

It sometimes helps after heating is to spray the male end with either or even brake clean. I might surprise you.

Adam if you ever get tired of looking at that Reed Vise and want to donate it to a good non smoking home please contact me 😂

For things locked together by corrosion or so0mething, how about ultrasonic vibration on the item immersed in a bath of penetrating/cutting oil or rust remover?

Job shop stuff looks like fun. If I was standing at a machine doing s production run of the same part day in and out, I would not be so interested.

Probably a dumb question, but if it's a Mahindra tractor, doesn't Mahindra sell a factory reseal kit for the cylinder, so you don't have to do all the measuring? Love your channel as always.

THAKS ADAM

Wow, four actual machining videos in a row! Maybe new shop building and new tool acquisition time is leveling off and it's time to get back to the work that made me subscribe. Fingers crossed...

Last year I had to design a custom pneumatic cylinder. What I would have given to have a catalog like that. It was incredibly tedious to find the right seals and o-rings. I only need it with metric sizes.

The two gland nuts that came apart are steel i bet. There is a special place in hell for engineers who design aluminum gland nuts. Bobcat does that to.

You need a pipe wrench, put some heat on it and spray water on the threaded side to shrink it fast. A trick I learned from an old timer at Chevrolet school

salut merci pour le cour rapide

Does the tractor manufacturer not have the seal kits available? Thanks for the video.

Compared to what Kurtis at Cutting Edge Engineering wrestles with weekly, these cylinders look like toys!

Use a 48 in pipe wrench

I wonder if an air hammer might have been able to break that stubborn cap off.

You have more restraint that I would have. "It can't be tight if it's liquid."

Aluminium expands more than steel - which is why the nut initially moved but then seized as heat was transferred from the barrel into the nut. linear thermal expansion coefficient of steel: ~ 7 (10-⁶ in/(in °F)) linear thermal expansion coefficient of aluminium alloy: ~13 (10-⁶ in/(in °F))

I know Adam is capable of machining anything to make a seal fit, but not everyone has that ability. Seems to me the right seals **must** exist somewhere. The mfg didn't make them up custom in their own factory. Maybe they're metric; maybe they're newer than that 2013 book. I'd have gone online and used 'modern' technology to search for the parts, maybe even contact the tractor manufacturer.

On a cylinder it always pay out to invest in a good quality viper seal to protect the rod seal from dirt and dust

putting the cylinder in the freezer would shrink the gland about .0015"more than the steel tube. Unlikely this would have been a great help for a severely corroded thread. You could have melted the gland out and machined a new one for good video content.

Didn't realize how big that fan was till he walked in front of it WOW

Given that aluminum expands much faster than steel, you just added to the problem by applying heat. A little shot of liquid nitrogen may have been the solution.

1-5/16 wrench through the left side of the spanner wrench, and boom you got where to put the cheater bar on, holding the wrench with wright hand and cheater with left until enough force lock em in place for you to apply necessary force with that last cylinder 5:43

Aluminum expands faster then steel when heated! Your chain wrench is set for tightening instead of loosening! Lefty loosening, right tightening ❤. I have over 20 years doing only cylinder repair. Not hating, just saying.

would the equipment manufacturer (in this case mahindra) sell a seal kit for their cylinder assemblies? or publish the seal info?

I'm interested in building a hydraulic ram for a project. Were do I start? Let say i need a ram that has 18 inches of travel and can lift 800 pounds. Any resource I can turn to for guidance. What I what to build is similar to your content in this video.

Did the seals get trashed by crud getting past the worn-out wipers, or do they all tend to go at once?

I suppose it is a silly question. But, why can't you just use a big ass pipe wrench.?

That poor pin at 8:04 … aaand it's gone 😬