Can't get the jack down
 

A friend that got out of bikes gave me his J&S Jack. It worked great all summer. I put it up on the jack about a month ago, used the locks and took the pressure off the jack. I tried to take it down off the jack to night, but I can't get the jack to lift. The valve is closed, but it won't pump up. Any ideas how I get this Ultra down off the jack?

If the locks are in place check the fluid it could be low and therefore not applying pressure,

How would someone do this?

You need a special tool from Harley Davidson. I think its called a Jack-Off.

Trout31 That's just wrong:icon_laugh:

Sledge, If you can check the fluid level on the jack if the level is good than the seal on the valve has gone bad. I'm not familiar with js jack but I had a bottle jack blow a seal and fortunately I just unscrewed the valve and replaced the seal and the jack has been good since.

It's just a simple bottle jack! Depending on how high you have the lift you should be able to remove the jack and work on it without being under the bike.
Chances are it's just low on oil. There will be a plug somewhere on the side of the jack that you will need to take out to add oil. On all my jacks it is just a rubber plug. Ideally you need to use an oil made specifically for hydraulic jacks but any oil will work in at pinch.

Or you could call J & S JACKS and buy a replacement jack for $35.00 @ 1-866-884-5586 or http://www.jsjacks.com/index.php/acc...ttle-jack.html

Look at the jack in the picture there is a small dimple right behind where the handle goes that could be a stopper are a screw in plug this would be where you add oil. With the jack vertical you would add oil till it just runs out the hole. The hole is not necessarily oriented that same at the picture but it will be on the cylinder part of the jack.

This would suck if you were taking it down to go for a ride....good luck

VZ is correct about putting in oil however I would go to a parts store and get hydraulic oil it's cheap and thinner than motor oil and works better because it's made to hold pressure otherwise why wouldn't they use motor oil in things like your front forks and tractors. just sayin

What I've found to "sometimes" is to open the valve that lowers the jack and pump the handle a few times. I've been told that this kind of bleeds any air out of the cylinder. Close the valve and try it again. Sometimes it helps and sometimes it doesn't. Good luck.

Call your friend, see if he had to deal with the same issue