This may not be the correct location for this topic, but here goes. I am sure that there is a wealth of knowledge out there on how to repair and rebuild a hydraulic jack. I am sure that all of us have a jack tossed in the corner years ago that quit working. I would like to see a tutorial showing dis-assembly and replacing O rings and seals, re-assembly and testing.
We make a living by what we get, but we make a life by what we give......Winston Churchill