Leaking floor jack

[mikehkang]

Originally Posted by The Radium King

the leaking oil might just be oil escaping from the pressure bleed due to too much air trapped in the unit. if you follow the procedure to bleed the air from it, it may stop. if you don't have the manual, it looks something like this:

- oven the valve you use to drop the jack by one turn and let jack drop to lowers position
- pump 8 times with valve open
- close valve and raise jack to max height
- pump 8 more times
- find the bleed valve and release any build-up air
- drop and test

Hello King,
Are these same valve or the two different valves?
- pump 8 times with valve open
...
- find the bleed valve and release any build-up air

Also, is there a special "oil" to used in a floor jack?

Thanks

[The Radium King]

you can buy jack-specific oil.

re valves, there are two of interest - one that you open when you want the jack to drop and close when you want it to lift (the raise/lower valve) and another that you open to bleed air (bleed valve). on my jack it is just a rubber plug in the main cyl that you pinch to let the air out. so , procedure looks like this ...

- open the raise/lower valve by one turn and let jack drop to lowest position
- pump 8 times with the raise/lower valve open
- close raise/lower valve and raise jack to max height
- pump 8 more times
- find the bleed valve and release any build-up air
- drop and test