danmar lift seals

[banshman]

Anyone know how to identify hydraulic lift cylinders? Every place I found online doesn't really help me. i didn't see any markings, numbers or stickers on mine. It seems impossible to find a seal kit for my D10-ACX lift.

Any help would be great

Thanks

 

[gregs]

I think the problem lies with multiple vendors and global sales. Best thing is to disassemble the cylinders and determine what seals you have and need. Some will have numbers on them, if not then you have to go by measurements. I just went thru this with my Eagle 2 post lift cylinders. They could not supply kits for anything older than 5 years. I figured out what I had and ordered them from oringsandmore.com

The other alternative is to take them to a hydraulic shop to be repaired. Its all common hydraulic parts, just a function of figuring out the sizes.

 

[Oilguy]

You have 2 options, in my opinion if the manufacturer won't help you:
1. Disassemble the cylinder and take the seals to a hydraulic seal distributor for identification.
2. Take the cylinder to a cylinder repair facility and they can take care of it. And ask for a list of the parts used so you have a record of it.

There are seal suppliers in your state who can help. Do an online search for that. The OEM's often build the cylinders themselves or "farm" them out to a machine shop. There are no standards in that market so they are usually different in construction in one way or another.
The cylinder repair facilities often make improvements to the piston and rod gland designs which can be a major improvement over the OEM design.
I would like to know what issues you are experiencing and perhaps of photo of the cylinder.

 

[PoorUB]

Is this what you are looking for?

https://www.hcrcnow.com/shop/seal-kits/product/78555

Took me 15 seconds

You might have to make a phone call.

 

[whateg01]

The problem, and I see this with other stuff too, is that people expect to just go the OEM for all their parts. It's usually less expensive to buy the pieces from a place dedicated to that type of component. We sell all the parts to build the equipment we build but it's all marked up 300-400%.

 

[mikegt4]

The problem, and I see this with other stuff too, is that people expect to just go the OEM for all their parts. It's usually less expensive to buy the pieces from a place dedicated to that type of component. We sell all the parts to build the equipment we build but it's all marked up 300-400%.

^^^^THIS ^^^^

Lift manufacturers buy the hydraulic parts from suppliers, most likely the entire cylinder as an assembly. Not much different than tires and car manufacturers.

Seals are made to universal industry sizes used around the world. For individual seals you will have to disassemble the cylinder to get the numbers off the original seals. Once you have the numbers you can order online or from a local bearing or hydraulic supplier. You could also just take the cylinder to your local hydraulic repair business and have them install new seals.

 

[brownbagg]

its like bendpak, they told me i had to buy whole new clyinders, they didnt sell parts

 

[gregs]

The parts I ordered yesterday to reseal both of my cylinders was a total of $13.74. The main piston u cup seal cracked and leaked out the upper vent on one cylinder, but I bought everything to both sides figuring its going to be in the same condition.

 

[nadogail]

Take your problem to a hydraulic shop and let them source the parts.

 

[rustyjames]

I've resealed several cylinders, they're really not very difficult to work on. The hardest part is removing the gland if it's screwed on. Once apart I look for any ID on the seals, or measure them and look them up accordingly. McMaster-Carr has them reasonably priced.

 

[skamp]

This place is great for seals. Like others said you will need to disassemble to measure the seals.

https://herculesus.com/index.php

Steve

 

[metlmunchr]

https://herculesus.com/page.php?name=Order-Catalogs&id=310

The Hercules seal catalog is available in printed form as well as a pdf download from the above link. Their catalog has the required gland dimensions for each type of seal. These dimensions can be used for machining parts to the proper sizes to accept seals, or they can be used to work backward from an existing part's dimensions to determine the proper seal.

All that's needed for measurements plenty accurate for determining proper seals is a decent set of digital or dial calipers and a set of telescopic gages for internal measurements. 50 bucks on Amazon will get both, or you can spend $300 on Mitutoyo but it really isn't necessary for these measuring tasks.

For the most part, any numbers on hydraulic seals are mold identifier numbers rather than a part number for the seal itself, and aren't useful for identifying the seal.

 

[Sumboodie]

I've resealed several cylinders, they're really not very difficult to work on. The hardest part is removing the gland if it's screwed on. Once apart I look for any ID on the seals, or measure them and look them up accordingly. McMaster-Carr has them reasonably priced.

I've seen some cylinders stall out a cylinder service bench that uses hydraulics to unbolt the piston and gland. No way in heck a person with hand tools or even impact was doing it.

 

[rustyjames]

I've seen some cylinders stall out a cylinder service bench that uses hydraulics to unbolt the piston and gland. No way in heck a person with hand tools or even impact was doing it.

I don't know the size of the cylinder(s) on a Danmar lift. Understood some cylinders require special equipment. What I do is leave the cylinder pinned to the machine and use a Big pipe wrench with a length of pipe to loosen the gland.

 

[PoorUB]

I agree the OEM parts will be more money. You also need to decide how much the hassle factor is worth and how long you are willing to be "down". If you have nothing better to do and time on your hands then tear it down and start hitting the hydraulic shops, or maybe McMaster-Carr.
Lat time I rebuilt a cylinder the kit was $60 and I was down for maybe an hour.

 

[Doozer75]

....

 

[gregs]

So I got my seals in the other day. It took 3 days USPS. Couple hours later I had disassembled the second one, cleaned both up, resealed and back together. I haven’t put them back in the lift yet as I am out of town for a wedding. But for $14 and a few hours time it will be back in service.

 

[banshman]

Wow, Thanks for all the responses everyone. Bend pak bought danmar and like what was posted they said i need new cylinders. I guess ill pull apart and see what I can find on the seals.

Thanks again