I have a 3.5 ton Larin jack that won't lift any weight.
> Anybody have any suggestions before I throw it out? It's
I have to bleed the air out of mine every couple of years and sometimes top up the hyd. fluid. There should be a screw on top to add fluid. Top it up, pump it slowy a couple of times, release, put the screw back on. I don't know why this works but it does - at least on my generic no-name jack.