Awesome shop Shawn. We are a hydraulic cylinder repair shop in Australia. We recently modernized our setup but have kept some of the older gear as it’s just heavier and better made. Also make a lot of our own tooling and equipment. Appreciate the content. Cheers
Great video! Shawn, what is the typical grit for polishing and honing rods and tubes? I’ve been looking for ideas on how to build a repair table, this was a big help.
For polishing rods I recommend 240 grit belt, it should give you a surface finish between 2-8ra which will be suitable for a standard lip rod seal. For the hone we use 45 aluminum oxide stones first, then we just use 220 grit sand paper on high rpm slow stroke. Gives use a 8ish ra, if we have a Teflon piston seal we will just run the hone longer with that grit and then switch to Scotch Brite (red) to get a finer finish.
Could you have Shawn explain how to bleed a hydraulic cylinder? We’ve had a Liebherr 946 “cook” seals repeatedly on the stick cylinder and his explanation of dieseling has me wondering
Hi, if the seals that come out of the cylinder are chewed up then I would say it would be air in the cylinder. And we can do a video to explain the best way to install and bleed a cylinder for you! But, it could be a number of things that can contribute to early failure. 1. Bad oil, but that would result to many failures. Not just the stick. 2. Extrusion gaps are out of spec, this would result in the seal looking stretched out. I know liebherr's run high psi so the extrusion gaps are very critical on these cylinders. 3. In correct Rod surface finish and barrel surface finish. Liebherr's typically have Teflon seals and they would require a finer surface finish 2-4 RA I believe. If you would like you can send us your old seals or photos of your old seals that have failed and I could do a visual analysis on them. I would be able to help a lot more with that. Let me know and thanks for the comment!
Been mechanic worked on trucks crains forklift rental store worked on everything 40 years Applied for a heavy equipment job they hired me over the phone
Sir I'm haydurlic mechanic hevi equipment like D8R D9R 14H 14G 966D 966F DOSSAN 420 LODAR 400 DOOSAN LODAR I have wark experience 9 years india 15 years in saudi arbiya I'm still working in saudi arbiya sir I nid Wark in canada can help me
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Awesome shop Shawn. We are a hydraulic cylinder repair shop in Australia. We recently modernized our setup but have kept some of the older gear as it’s just heavier and better made. Also make a lot of our own tooling and equipment.
Appreciate the content. Cheers
I know hydraulics and as soon as you said dieseling I though this guy knows how it is.
this is cool and this guy knows his stuff. i like his take on how they make their own tools. he is the definition of efficient
Yeah he knows his stuff for sure.
Best hydraulic shop around!
That shop is fuckin awesome man. I’d love to be able to take my stuff there knowing they are going the extra mile and taking pride in their work.
Absolutely top notch fella is Shawn boretec 100% the best shop around
These videos make me feel like I am a toddler playing LEGO while tinkering on old cars. :)
How do you repair telescopic cylinders 3 stage or more such as hyco or heil ?
Great video! Shawn, what is the typical grit for polishing and honing rods and tubes? I’ve been looking for ideas on how to build a repair table, this was a big help.
For polishing rods I recommend 240 grit belt, it should give you a surface finish between 2-8ra which will be suitable for a standard lip rod seal.
For the hone we use 45 aluminum oxide stones first, then we just use 220 grit sand paper on high rpm slow stroke. Gives use a 8ish ra, if we have a Teflon piston seal we will just run the hone longer with that grit and then switch to Scotch Brite (red) to get a finer finish.
nice! i did avational stuff in the military.
You damn sure talk the talk and walk the walk
WITH A BIG SMILE
Great video guys. Really enjoyed the content..
hey, so as the owner, did you had to go to school get certified to do hydraulic cylinderswork?
Thanks for the tour sir 🤙
Thanks for watching!
Could you have Shawn explain how to bleed a hydraulic cylinder? We’ve had a Liebherr 946 “cook” seals repeatedly on the stick cylinder and his explanation of dieseling has me wondering
Hi, if the seals that come out of the cylinder are chewed up then I would say it would be air in the cylinder. And we can do a video to explain the best way to install and bleed a cylinder for you!
But, it could be a number of things that can contribute to early failure.
1. Bad oil, but that would result to many failures. Not just the stick.
2. Extrusion gaps are out of spec, this would result in the seal looking stretched out. I know liebherr's run high psi so the extrusion gaps are very critical on these cylinders.
3. In correct Rod surface finish and barrel surface finish. Liebherr's typically have Teflon seals and they would require a finer surface finish 2-4 RA I believe.
If you would like you can send us your old seals or photos of your old seals that have failed and I could do a visual analysis on them. I would be able to help a lot more with that.
Let me know and thanks for the comment!
@@ShawnMcCulloch-pe4yk hey Shawn , if you don’t mind me asking, what’s the proper bleeding procedure for any cylinder?
Inspirational
Indeed
Brake Clean Mafia approved video! #brakecleanmafia
2:24 what level is that? That would come in handy! Love the video
That's a little 4" magnetic level with a grooved V on the bottom. It's great for leveling rods!
Been mechanic worked on trucks crains forklift rental store worked on everything 40 years
Applied for a heavy equipment job they hired me over the phone
Where are you located
Fuking awesome
Where can i find them on instagram or facebook?
Boretech_solutions
On instagram
air in the cylinder destroys the seals, they must be vented before applying pressure
How do you vent?
Hi bro
hello
gotta paint an S on that fork lift
You missed the point completely….
Sir I'm haydurlic mechanic hevi equipment like D8R D9R 14H 14G 966D 966F DOSSAN 420 LODAR 400 DOOSAN LODAR I have wark experience 9 years india 15 years in saudi arbiya I'm still working in saudi arbiya sir I nid Wark in canada can help me
Salam brother work good in saudi?