Hydraulic floor jack won't maintain height - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars
Ford Escape | C-MAX | Mercury Mariner Forum This forum is for discussion of the Ford Escape, C-MAX, the Ford Escape Hybrid and the Mercury Mariner.

LinkBack Thread Tools Display Modes
post #1 of 2 (permalink) Old 12-18-13, 08:39 PM Thread Starter
Registered User
Join Date: Aug 2010
Posts: 62
Hydraulic floor jack won't maintain height

This a general question about my hydraulic floor jack - I have one of those steel framed 2 ton jacks that every hardware or auto store sells. I've had this jack for several years.
After locking the fluid valve and jacking up the vehicle, the jack slowly comes back down under load. I'm guessing there is some kind of check ball or valve that isn't fully seating. Also, in cold weather it doesn't give me a full piston when I pump the handle. The owner's manual on another jack I have said the fluid is dirty. The jack doesn't leak that I know of, and I think it's full of fluid, since I have topped it off before.

FE385 is offline  
Sponsored Links
post #2 of 2 (permalink) Old 12-19-13, 07:07 AM
Registered User
Join Date: Sep 2009
Posts: 221
Re: Hydraulic floor jack won't maintain height

How would/could the fluid get dirty?

I have an old big, heavy cast iron one I bought in the seventies at Montgomery Wards. The check valve would be in the pump assembly/fluid tank.

I've had a bad leak years ago from the pump and got parts from a local hydraulic repair company. A friend at work that use to work sent me there, I mentioned his name and got the parts for free! I get a few drips every time I use lately.

The worst part was the pump assemble just screws in. A large hex, very thin and sits in a pocket. It's a few inches long but no deep well would work so I bought the cheapest deep well I could find, cut it in half and welded a section of pipe in. Special tool now!


'09 Ford Escape Limited, V6, 4WD
wptski is online now  
Sponsored Links

  Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars > Ford Trucks | Utes | Vans |SUVs | Crossovers > Ford Escape | C-MAX | Mercury Mariner Forum

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome