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J & S Jack Problem

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Old Today | 03:38 PM
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TimP 117's Avatar
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Default J & S Jack Problem

I have a pneumatic J & S Jack that is stuck at full height. Although I only used my compressor once to lift the bike when it was new. Just too easy to jack it up by foot. Both stops are in their appropriate highest slots. I raised it up without issue but when I went to let if down the jack would not raise at all. I have had a few issues in the past where it took some extra pumps to get it to raise at first then worked fine.
In the first pic I am assuming the center allen head screw is the release valve. Is this correct? Not typical of the release valves on a non pneumatic bottle jack I have seen anyways. I need to lower the ram to remove the jack and either bleed or replace.
Thanks in advance for your help.


 
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Old Today | 04:03 PM
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If you don't use the air lift, just go buy a bottle jack and mount it in there.
 
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Old Today | 04:20 PM
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Originally Posted by skydude426
If you don't use the air lift, just go buy a bottle jack and mount it in there.
That’s the intent but first I need to lower the ram to remove the existing jack and not sure if the Allen screw in the center is the release valve.
 
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Old Today | 04:23 PM
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If you don't have weight on the lift, try putting some weight on it to see if it will go down when bleeding off the air. 100 pounds minimum.
 
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Old Today | 04:29 PM
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Originally Posted by CoolBreeze3646
If you don't have weight on the lift, try putting some weight on it to see if it will go down when bleeding off the air. 100 pounds minimum.
The bike is on the lift and the ram will not raise to release the stops.
 
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Old Today | 04:45 PM
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Originally Posted by TimP 117
The bike is on the lift and the ram will not raise to release the stops.
Okay that was not mentioned in the first post.
 
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Old Today | 04:54 PM
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I'm guessing it needs oil - any way you can get some in there while its on the stop? The plug is on the side of the bottle jack, maybe a syringe?
 
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Old Today | 04:56 PM
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Didn't know the bike was on it..Have some help there when you do anything. This could have the makings of some bad ju ju with the bike on it, unless you get the Jack raised.
 

Last edited by Bass Player; Today at 04:58 PM.
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Old Today | 05:12 PM
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Is there a name on that bottle jack?
Part number?
Anything to ID it and search online for info on it.
 
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Old Today | 05:16 PM
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Thanks for the reply's. What I am trying ask is if the allen screw in the picture is the release valve. As mentioned above the jack does not have the typical T type connection. Correct me if I am wrong but if the allen screw is the release valve I can open it and theoretically I should be able to lower the ram and remove the jack. The bike is stable with the stops locked in their slots. Its not going anywhere.
 
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