www.alleghenyyork.com
How to properly locate and identify various types of hydraulic seals. This video is not meant as a step by step guide to repairing a hydraulic cylinder. It is meant for demonstration of the proper way to identify and measure hydraulic seals only.
hydraulics tend to be a magical subject that few shops want to spill the beans on. Thanks for the straightforward and informative video!
Thank you very much. I must have watched 30 videos before anybody has even mentioned the piston or u-cups and how to get them on. Thank you again
Thanks for letting us know. Glad we helped you out.
To the couple gentleman that left less than stellar replies: It’s obvious he’s not a mechanic, it’s also obvious he used different tools than one usually would, but did you not get the jest of the video? It was about helping end users learn about seals and helping them identify seals. Hell, in a world where a machine is now obsolete after 10 years people need all the help they can get. I’ve been in the hydraulic world long enough to know we don’t always have the right tools and we also don’t get the tools we do get in either Brass or Stainless like some Engineer recommended, so take it with a grain of salt and give credit where credit is due. This gentleman got most people to smile with his bionic hands and magical finger snaps all while helping others that need it. We just made a cylinder Head (or packing gland) for a large John Deere front end loader. It was broken when a large rock came over the back of the bucket and wedged in between the Head and a cross member of the loaders lift arms. My customer called Deere and was told the Head was $5,000.00+ and a new cylinder was over $12,000.00. Key word is WAS as both the Head and entire cylinder are obsolete. After weeks of hunting my customer brought it in and we spend the next 3 days making this monstrosity, but it saved the cylinder. He was even more excited that I had all the seals for said cylinder in stock, so we reassembled and tested the cylinder before sending it home. Part of my point is what he taught most likely helped several people. I wouldn’t recommend using a pipe wrench or using a knife, but I’ve done both on jobs when they were the only tools available. Being professionals (?) there’s no way you can convince me you haven’t done the same thing, unless you’ve only been doing this for a couple years. I’ve done it long enough that there aren’t many cheats around that I haven’t used, or at least tried. Give the man some credit, he did a good job considering it’s not his job. Now you can reply and correct me, I await your superfluous answer(s).
You nailed it Albert. Thanks for clarifying the video for others.
That is a useful tip about heating just the seal. I was trying using a hot air gun but that was expanding the piston as well.
I heat oil to 180 and let seal set 20/30 minutes 😊
This was informational and entertaining. Thanks for sharing with us.
Hope it helped you out!
Good tips. Especially re soaking in warm oil.
thank you for you're helpful video
Glad it was helpful!
It says to use brass tools but he uses steel. Do not use a pipe wrench on the piston rod nut. Do not cut the u-cups off in this fashion. This process is very dangerous. He is a seal guy and not a fluid power mechanic. I know because I am.
Thanks for the input William. This video was made to demonstrate how to identify seals not how to repair a cylinder.
we use pipe wrenches to open cylinders all the time. not a big deal as long as your not an idiot.
Great videos helps me a lot . Great job carry on.
Glad to help
Thank you very much
Thanks for you sharing 👍
Thanks for visiting
Hi I have a bobcat and right underneath the wiper seal there’s what you called a u cup seal sometimes there’s a spring inside the seal other times there’s just a sold piece of rubber what’s better and will the one with the spring last longer or the same ?? Thank in advance
A u-cup can be loaded with a spring or a rubber O-ring energizer. What we call either a loaded lip seal or a Polypak, a U-cup loaded with an O-ring is very common and acceptable for most applications. Spring-loaded U-cups are used in more specialized applications, for example, for higher temperatures, compatibility with certain chemicals, or in specific industries like oil and gas. The outer seal material will also change its properties. I’m not sure how long either will last, and it depends on the application to determine which is more appropriate. The life will be limited by the material of the u-cup, which is typically going to be urethane. The spring will not take a compression set as quickly as the o-ring, but the urethane will still take a set over time. In most cases, if it is a urethane seal, a standard o-ring loaded will be just fine. If you'd like to speak with someone at Allegheny York please call 717-266-6617
nu am vazut pana in prezent cum se elimina sicanele produse pe suprafata interioara a unui cilindru,si care ar fi diferenta dintre diametrul nou si diametrul vechi (nominal) .
BUST a NUT! :) Seriously, Great video!
Sir oil sel ka कंपनी kaha pe he
Why order seals from u at work. We call your book the fancy book 🤣 got those odd 5 piece seals
Good
My inner gland seals are crumbling. How can i measure what it takes? Also is the piston aluminum? Maybe that why no wear band. Aluminum softer than steel
There isn't a good way to measure the groove diameter inside the gland without proper tools. The proper tool would be internal calipers. You can try to measure the cross section of the seals to figure out the OD. The rod diameter plus two times the cross section will give you OD of seal. Not sure the context for the piston being aluminum or not. Typically wear bands are used on cylinders where there is a chance of side loading, such as in construction equipment where there are a lot of extended rods and horizontal cylinders. Cylinders that are unlikely to experience side loading, such as a vertical cylinder on a press, typically do not have wear bands. You could call our service center at 717-266-6617 if you need further assistance.
Was tough to watch this vid
I can't believe you use a pipe wrenche and not the right size socket
Thanks for the input. We know the tools used are not necessarily the ones a professional repair service would use. We don't do the actual repair work on the cylinders. We supply the seals that hydraulic service technicians use. This vid is meant as a way to identify the seals, not as a step by step on how to repair a cylinder start to finish.
Chevron packing is what they are called
Thanks Robby.
Good information, but the camera needs some work. Too much darting around. Keep it still so viewers can focus on what you're talking about.
sorry, but that is poor camera work: Either point the camera to where the action is or move the action to where the camera is looking.
Thanks for your input
wow Seriously? Measuring torn distorted stretchy and wobbly seals like that? And the camera work! dizzying!
He has hydraulic fingers 🤌 therefore no tool necessary to take it apart.😎😄
If only it were that easy in real life.