Floor Jack Goes Down By Itself

On his you can pump the jack up and wherever you leave the handle it will stay in place and will not move when weight is applied.
Floor jack goes down by itself. I have a 3 ton craftsman jack that i got from sears as a jack stand creeper. I figure it is like bleeding brakes but don t know how to do it with a floor jack. Floor jack best for general use like working on cars easier to use can get lower more stable can roll around with weight on it more stable lift platform hydraulic jack greatest weight lift also called bottle jacks greater lift potential while i have given you what. I will assume you are talking about the roll around jack used in garages and the bottle jack.
Can anyone explain how i can fix my floor jack so can build up pressure. In this video i demonstrate how to remove air from your hydraulic jack and fixes it from bleeding down. The jack will not even lift its arm by itself let alone the weight of an axle. Try it if yours has the same symptoms it just may fix.
Use only a quality grade hydraulic floor jack oil do not use regular oil products. Both mention jacks are hydraulic. The oil level should be between 3 16 to a 1 4 of an inch above the cylinder on most floor jack models. So after using a friend s floor jack i noticed that mine behaved in a different way.