REALLY SAFTY SEAL points up, or presure safty, and yes there is a cover plate. But i tryed to wing a repair. I blew the seal and got a hydronic punch in the head. Luckily the top safty seal went when i stepped on it; only my foot in weight. WTF the safety valve points straight up, really. I am ok lol, just have dumb moments 😆 🤣
To bleed this jack, 1. open the valve (on this particular jack), 2. remove the fill plug, 3. put pressure on the saddle (the arm that raises up), 4. use the handle and operate the mechanism up and down several times, 5. fill the reservoir with oil 6. replace fill plug. 7. test to make sure it raises and lowers and holds weight without sagging.
So, you just compare the old O ring with the New O ring,and that's how you know which size to put on there ? Also, where did you order the O rings from ? Thanks a lot. My was leaking. First the wire that was connected to the Pin and to the pump broke. I bought some wire and hooked it up,then the Pin wouldn't stay all the way down, and fluid started leaking. The Jack wouldn't stay up either.
Thanks for the video. I was about to go by a new floor jack because mine failed. Lucky for me, I found your video and was able to repair my jack with the $4.99 Harbor Freight O-ring kit (Item # 67609). Saved me well over $100.
I have teh exact same problem but my O ring is not really O ring but somethign made of clear material and quite think in width. any idea from where i can get that?
Sorry to hear that. I'm not sure what to do about a blown out main piston seal. Seems like you can find replacements for more expensive jacks but with the smaller less expensive ones it's expected to buy a newer (better) one. I'm hoping to get mine working tomorrow, got leaks at the bleeder screw and pump piston. Going to replace both o rings, fill with fluid, bleed air and hope that works. If not there's a nice jack at home depot with my name on it.
@@salamabod1975 To bleed the air out of the system you have to unscrew the valve that you normally unscrew in order to lower your jack. You don't want to remove it entirely though. Once the valve is unscrewed enough that the jack will not lift when you moving the handle up and down, you're going to want to continue moving your handle all the way up and down about 10 or 12 times. Then fully re-tighten the release valve, and jack it all the way up to check if it worked. To replace the oil, you have to remove the rubber plug, and turn the jack upside down over a bucket so the hydraulic fluid can leak out of the drain plug hole. Then you simply fill the reservoir back up with hydraulic jack fluid from the hardware store and bleed air from the system like I described. But you must be careful when bleeding air from the system after replacing the oil, because the rubber plug can pop out while you are attempting to move the handle up and down. This can spray hydraulic jack fluid into your eyes. It has happened to me, it makes your vision blurry and can injure your eyes. I had to flush my eyes with water for a long time before I could see clearly again.
This looks identical to a jack I just found discarded. That one has no cover plate, so I there’s no make or model#. Needs a new cylinder assembly, as an O ring replacement failed to fix the leak. So for about $15, I’ll have a new jack.
I know it’s a older reply but if your Jack does not lift and no oil leaks out then you just need to bleed the air out, with most floor jacks it’s either leaking oil or needs bleeding
If you have calipers, you can measure the diameter and thickness..or if you buy a set like he did, you can match them up to the chart and the corresponding o ring compartment.
Thanks so much for the video! Is very informative and answer quite a few questions but I am still puzzled by my jack leaking oil from underneath. I did not think it could leak from under it but only from the obvious places. Guess gotta keep looking for the source of the leak...
The smaller Duralast jacks do not have an O-ring. And if you fill the reservoir to the top you cannot get the plastic plug back in until you empty some of the (incompressible) fluid.
On the big cylinder itself there is a bump the same colour as the Jack. This is actually a rubber bung just over painted. You should be able to pop it out and fill there. It's quite a tight fit to get it back in. I had to twist it in, even though it's just a rubber bung. Replace the release screw o ring whilst you are there. Mine leaked from both. As someone else mentioned, this is the same Jack as Hilka sell in the UK at Screwfix as well as other manufacturers.
