Stuck Piston - 3-Ton Floor Jack

Oka · Post by **Oka** » 21 Oct 2017, 18:23

Can't find anything in particular about a stuck piston in the low profile floor jack.
The jack has a very slow lifting, then I noticed this. I have bled the air in the system.
Any help?
Thanks.

: Jack2.JPG (124.15 KiB) Viewed 2206 times

: Jack1.JPG (40.28 KiB) Viewed 2206 times

Post by **jonesg** » 21 Oct 2017, 18:44

The garage journal forum website has a jack rebuild forum.
https://www.garagejournal.com/forum/sho ... e&t=197787

Oka · Post by **Oka** » 21 Oct 2017, 22:14

jonesg wrote: ↑21 Oct 2017, 18:44 The garage journal forum website has a jack rebuild forum.
https://www.garagejournal.com/forum/sho ... e&t=197787

I used a pry bar a few times, it kept sticking.

A few years back, I bought it new and never being serviced. Though, I never aired it out on first use.
I did not read the instructions.

Sure I have not much to lose, so, I turned it upside down and pumped more than enough DW-40 inside
the piston hood. Let it sit for a few seconds and used the pry bar a few times and it started responding.
After a few fooling around with it, it responded. Now, eight handle bar controls had the jack in the upright
position. Just awesome!

Thanks!

Post by **jonesg** » 22 Oct 2017, 04:21

I've read the jack should be stored with the piston retracted to prevent rust.

Oka · Post by **Oka** » 22 Oct 2017, 09:19

Sure, at least for the springs also. It has always been stored “retracted” (that is with the handle bar straight up).
Thanks.