Gary, you replaced a seal on the hydraulic unit on the HF lift? My buddy's just sprung a leak and he bought a whole new replacement hydraulic unit, and it wasn't cheap, lol. Do a thread on that seal replacement maybe? I'd love more details (like where you got the seal). I just bought a big HF bottle jack and looking at the exploded parts diagram in the manual, it seems it doesn't even have seals, just o-rings.
Just a typical ggg F around and find out?
I actually fixed two. Full story my 50 year old Blackhawk SJ2 service jack had finally completely given up, found a rebuild kit with instructions and went through it. It's now painted up and back in service. Tested it by lifting the skid steer, about a 50% overload. Emboldened by my hydraulic mastery
A bud
gave me a newer HF lift that was jerky going up and down, wouldn't hold. I think that was a rough shaft and beat up seal/o-ring. No big deal, an hour or two, some polishing, smoothing lubing, an o-ring from the red box, refill with jack oil and it's working great. The XS1B has been sitting on it up in the air a for a couple months now.
My old war horse HF lift had developed a slow leak that was gradually getting worse. I had a cookie sheet wired under the pump to keep the floor dry.
Now unstoppable after two victories, just dug in, found a bad seal, replaced it? memory fades.
But they are stone simple, can't hurt to go in and look around. fix anything obviously worn or rough. see if you win.
Doesn't hurt to get some thick grease on the chassis pivot points while you're down there.