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Sears 4 Ton Hydraulic Automotive Floor Jack-Will Not Lift ?

September 25, 2008

Dear Fellow Technicians, I hope you can help me;

I have a Sears 4 Ton Hydraulic Automotive Floor Jack Model #214.12310 that I have owned for approx. 20 years now. It has been a real work horse I use it almost every week when I work on my vehicles.

The problem started around a week ago when I noticed that the jack would not lift past approx. 6" and then it would just oscillate up and down in short bursts when you would pump the handle or the foot pad. I checked the oil level and added a little bit, and then following the 3 page instruction manual that came with the jack I pumped the handle with the release valve open to bleed out any air in the power unit. However, this did not work, and the jack failed to lift as before.

I contacted Sears and learned that they no longer sell replacement parts for this jack nor could they direct me to a technical service manual that would instruct me on how to diagnose what the problem with the jack could be.

I have gone on the internet and I have tried to research this information but have only found repair shops that supposedly will service Hydraulic Jacks, but have not been able to find any book or literture on repairing them yourself.

If you have any idea what could be wrong with this Hydraulic Jack or if you know of a website that may have the information that I am searching for please respond.

Any help is deeply appreciated.

Thank You,
Eduardo A. Mosquera - Lennoxspaceneedle

Posted by EdsHonda1987 on

  • 3 more comments 
  • EdsHonda1987 Sep 27, 2008

    Dear Chris07551;

    If you could send me via E-Mail the diagram of how to do this it would be very helpfull.... I figured it was some type of seal or O-Ring that the pump uses to build up hydraulic pressure that maybe is leaking.... But without a parts disassembly diagram of the pump it is just guessing, and not fixing......

    You would think that Sears since they do not sell the replacement parts anymore would at least provide a diagram of the pump to make it easier to fix, but they unfortunately have adopted the "throw out and buy a new one" attitude that is so common with US company's today. I read online that Sears probably did not make the jack they just put their name on it, and I could not find anywhere on the tool the name of an independent manufacturer, which makes it that much harder to identify the type of unit that it is.

    Thank you for your effort and time in helping me with this problem.

    Eduardo Mosquera

  • damtramp Dec 12, 2008

    some floor jack same problem

  • Anonymous Jan 25, 2009

    Hi Chris I have a 1.5 ton Sears jack and the seal inside has gone bad (N80XXXX) Do you know where I can find this seal? thanks Ron

  • Anonymous Apr 22, 2009

    I have a sears 5 ton hydrolic jack that won't lift. Model 3 is 214-50114. Do you have any ideas where I can get new seals?

  • Anonymous May 04, 2009

    same jack issues



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I had the same problem with a 3 ton sears jack and here is what I did. I pulled the jack all the way to the top, the piston should be fullley extended. Then I added oil to the jack. You will have to work the piston back and forth, (.5 in or so) and continune to add oil while doing this until no more air comes out. The method fix my 3 ton jack. Hope this helps

Posted on Jun 08, 2009

  • Anonymous Dec 09, 2010

    I did solution 2 and it worked perfectly! Thanks jkm4598002



John Carter

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I have a Sears 1 1/2 ton floor jack. I was able to buy a repair kit from Astro Pneumatic Tool Company 372 OLD U.S. Hwy 52 South Mount Airy N,C 27030-8093

Posted on May 21, 2009



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Oh ok i see whats wrong if u filled it with oil and realesed all the air out should be good if no go there is only one more problem that it can be

the 2 seals inside the jack one is a decent sized o ring
and the other is a rubber stopper to build up the pressure
to fix this problem the actual pump must be pulled out of the jack i have done this before but it is sorta hard if u need further help i can send u a diagram on how to do it thanks from chris

Posted on Sep 27, 2008

  • Scott Ocampo Jun 14, 2013

    can you send the diagram, I am having this problem. Thanks



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I got a Sears 4 ton floor jack that someone had thrown out because it didn't lift (it was almost unused, but out of warranty). I noticed a phone number for the distributor, the Torin Jack Company, Ontario, CA (888-448-6746) on the underside of the jack. They told me to bleed the jack (open the valve - two turns CCW of the handle, and pump the handle 20 times). This fixed it; the jack works very well, at least for now. Also, the screw with the "DO NOT ADJUST" cap is the pressure relief valve. If you have messed with it, as I had, you want to adjust it "almost tight". If it's loose, the jack won't lift or will not stay up. Adjust it just tight enough so that the jack will lift and hold, but not any tighter. Hope this helps.

Posted on May 11, 2011

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