[AT] Hydraulic bottle jack issues

[David Trompower]

Correction, the jack is a Black hawk brand and not a black jack. 

R. David 

> From: flywelder at live.com
> To: at at lists.antique-tractor.com
> Date: Wed, 21 Jan 2015 02:32:59 -0500
> Subject: Re: [AT] Hydraulic bottle jack issues
> 
> need your thoughts and help with this.
>  My  old Black jack  brand, hydraulic (bottle) hand jack, 12 ton model,   will  raise the ram,  but not retract the ram. 
> 
> 1) Opening the release valve does nothing. 
> 2)  the weight of what I have raised with the jack  will not  push the ram back down? 
> 3)  I can stand on it  and it will not retract.
> 4)  if I hit  the ram  with a mallet it will slowly go down, .. an 1/8 of an inch  with each blow is all. 
> 5)  Left over night with a load on the ram,  will not cause the ram to be retracted by morning.
> 6)  I opened the filler port expecting there is too much oil or excess trapped air.  but neither came out?
> 
> What is wrong?
>  What  would you  recommend I do to fix this jack?
> I am stumped. 
> 
> 
> R. David 
> 
> 
>  		 	   		  
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