Hydraulic cylinder kit

I need to rebuild the cylinder on my dirty hands 35ton splitter. It’s finally leaking enough to even bother me. I’ve redone several hydraulic cylinders at work, so I’m not intimidated by the job. I just don’t know what I need for a seal kit. I believe it is a 5” cylinder. So are all 5” log splitter cylinder kit the same. Or do I need to find one specific to my cylinder if’n I can figure out a make or model.
Seems like they should be pretty much universal

 

Nothing is universal in the hydraulic world. If you can't find a part number on the cylinder to try to match up, your best bet is to tear it down, remove the seals and take them to a hydraulic repair shop to match up. They'll mic them and get them for you.


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I did find this in the manual. It might help knowing cylinder part number.




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Also found this. Says it fits DHT 5" cyl.

Hydraulic Cylinder Seal Kit


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Sorry you have to get into this project. The joy of owning machines !

 

It’s not a big deal to me. Considering where I work, I’m used to fixing old wore out crap. Sometimes this place feels like a museum for the sand and gravel industry!

 

I used the 12$ Amazon 4.5 inch kit on my huskee. Easy install no leaks 6 months later. I did get a spare kit just in case.

 

Seems like a good price. I dont blame you for getting a spare.
How bad was it to do ?

 

Not really much to replacing the seals. Half hour job at the most.

 

I did a DHT 25T (4") last year...super simple, didn't even drain the cylinder. (hyd oil was fairly new)
Take the bolt out attaching the ram to the wedge, lift the cylinder up as high as you can get it (still attached to the frame) put the hitch on the ground (gets the cylinder at more of an angle, less oil lost)
Take a wood block and knock the packing gland back enough to get the clip out (IIRC I loosen the hose fitting enough to let it leak a lil oil while I pushed the packing gland back 1/4") now start it up and very slowly (engine idled) push the gland out using hydraulic pressure (mine came out very easily, barely lost any oil at all)
Change the seals (I just had a local shop match mine up) and reinstall gland. To make room to put it back in I lowered the cylinder enough to let a lil oil run out, then propped it back up and loosened the hose so the trapped air had somewhere to go while pushing the packing gland back in (well, tapping it back in, with formerly mentioned wood block) then tighten the line back up, put cylinder back on wedge, start up and cycle to purge air, all done! Easy peasy!
Now if you need to replace the seals on the ram/piston, that takes a lil more work, put you could still do it basically the same way...but most DHT's are known for the ram seal in the packing gland leaking...I bought my stuff at a Parker store, so hopefully a better seal quality now...but that splitter was a flip, so I won't know how it does long term.

 

Watched some people on YouTube doing some silly stuff with chains and winches to trees and tractors to get the gland/ rod out.

 

I seen a couple of those too...the one in particular I thought should have had his tools taken away! The ram finally came flying out and flopped on the ground. Moron!

 

This is in my future on mine at some point. Not looking forward to it.

 

Most cylinders (especially log splitters) are fairly easy to work on, for most people...just don't watch too many "cowboys" on youtube university before doing it.

 

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How about the 1/2 hour of wiping up.... everything!

 

Do it out in the gravel driveway...just helps knock down the dust...and rustproof the splitter.

 

That’s just rust inhibitor.

 

I wouldn't currently be an orthodontist, HVAC technician, plumber, or DR without YouTube. Well....I'm technically not an orthodontist yet but I'm only about 2 videos away from it. Haha