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Help with Hydraulic Floor Jack bleed/top off

blackstallion

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Jun 28, 2025
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Have this ~20y old US General (47246) Jack with no labels on the bolts to indicate which is the Fill plug, bleed and Safety. Anyone have access to or can provide a link or schematic for this older Jack?

Google only returns the manual for the newer models with a different setup.
 

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jayemm

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I have that same jack. Here's from my manual. Mine has a little twist open breather where yours has a plug. In this picture the left cap is the high pressure relief/safety overload valve. The middle has a spring and 2 steel balls to open and close the correct ports when pumping. The right one is breather as noted.
Edited again to add: there are 5 parts under that center plug and it has to go back together in the correct order. I wouldn't mess with this to fill and bleed. The bottom right corner of the page shows the latest revision in 2009. I bought mine in 2010 so the breather must have been added after yours.

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jayemm

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To answer your question, the breather plug (referred to as 13A in step 3 under oil replacement) is the fill plug just to make it clear.
 
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blackstallion

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Thanks, I did find this manual in PDF form online, but to your point, doesn't match my older model.

Do you know which plug on mine would be the A7 seal plug and the A1 fill plug?
 

jayemm

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Thanks, I did find this manual in PDF form online, but to your point, doesn't match my older model.

Do you know which plug on mine would be the A7 seal plug and the A1 fill plug?
On the pages I posted I can't find the A7 and A1 plugs you are referring to but to simplify: the FILL plug is the left most plug in the picture in your initial post (mine has a bleeder screw integrated into the plug) and like other jacks is removed when pumping during an air bleeding operation or to fill (or dump old fluid). The middle plug covers a spring and 2 balls as I described above. The right most plug is for the high pressure/safety overload valve. Also, the letter/number designations in the manual can be confusing and the fact that the picture in the manual showing the 3 plugs is upside down relative to the one you posted.
 
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blackstallion

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On the pages I posted I can't find the A7 and A1 plugs you are referring to but to simplify: the FILL plug is the left most plug in the picture in your initial post (mine has a bleeder screw integrated into the plug) and like other jacks is removed when pumping during an air bleeding operation or to fill (or dump old fluid). The middle plug covers a spring and 2 balls as I described above. The right most plug is for the high pressure/safety overload valve. Also, the letter/number designations in the manual can be confusing and the fact that the picture in the manual showing the 3 plugs is upside down relative to the one you posted.
Ok, makes sense now.

Looks like the A7 seal bolt on the left in my picture is the fill and bleeder.

Ignore my comment about the A1 fill plug, there is NO such plug, I misread the label on my Jack, A1 refers to the actual hydraulic reservoir, not a separate fill bolt.
 
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