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I have an allied 3 ton floor jack. The jack will not raise. I can lift and lower the jack arm but the lift will not rise. There is oil in the jack. I purged the piston to no avail. Would appreciate some help I really do not want to buy a new jack, this jack is approximately three yewars old ands has not been used very much.

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6ya6ya
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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

  • 89 Answers

SOURCE: Sears model # 875.501390 floor jack will not raise at all.

IT SOUNDS LIKE IT IS CAPABLE OF MOVING FLUID FROM THE RESERVOIR TO THE CYLINDER. CAN YOU SEE THE SMALL PUMP PISTON POP BACK OUT WHEN PUMPING THE HANDLE? MOST JACK PROBLEMS BELIEVE IT NOT IS AIR. THEY GET AIR POCKETS IN THEM AND CANT PUMP THEM OUT. TRY REMOVING THE FILL PLUG ( TYPICALLY A SMALL RUBBER POP-IN CAP ) FROM THE CYLINDER AND JACK IT UP. IF THIS WORKS DO IT FEW TIMES, THEN REINSTALL THE PLUG. YOU COULD ALSO HAVE A SMALL CHECK VALVE PROBLEM INSIDE. IF YOU DISASSEMBLE, BEWARE OF SMALL SPRINGS AND CHECK BALLS. MAKE NOTES. HOPE THIS HELPS.

Posted on Apr 07, 2009

erickg
  • 116 Answers

SOURCE: Floor jack will not raise even without load

sounds like either pump piston seals or check valve on pump.

Posted on Apr 16, 2009

erickg
  • 116 Answers

SOURCE: floor jack needs sevice or seal replacement

you can do it two ways remove and match up the seals with a local distrubuter or try to find your make and model and order them.check your oil level also and the valve for dropping.

Posted on Apr 17, 2009

  • 75 Answers

SOURCE: Floor jack will not lift car off jack stand

It sounds like you have MAXED out the absolute HEIGHT that the jack is CAPABLE of extending to.
Try this to test this theory; Remember though before you !!EVER!! attempt to raise a vehicle with a jack, make sure that the vehicle is on FIRM LEVEL ground and that the JACK is likewise. Even if you have to slowely drive your vehicle a short distance in order to attain level ground, DO IT. THIMK! It could mean the difference between whether or not you live to tell about the flat you changed.
Get yourself a piece of 'treated' 2"x10"x 2' lumber which you will put in the trunk of your vehicle with your jack. It is now 'married' to your jack.
Chock the Tires on the opposite side of the vehicle that you will be working on. The weight of your vehicle will be redistributed when you jack up the vehicle. Even though you will have it in 'Park' you do NOT want it to move any at all. The chocks will prevent this.
Place that piece of lumber beneath your vehicle below the 'jack point'.
Place your jack squarely on this piece of lumber and slowly crank the jack up, keeping your eye on the jack point where the jack is in contact, until the tire is off the ground about 1/2 inch, any higher and you are just wasting energy and time. Once the tire leaves the ground it is high enough to remove from the vehicle. You may have to raise the vehicle up a bit more in order to replace the flat with a good tire. Be SAFE, Start low and work your way higher.
The REASON for the piece of lumber under the jack is to distribute the weight that is now bearing on the jack so that it does not depress into the ground. It also provides you with a stable platform to begin with and gives you TWO more inches of height to use with the jack if needed. Use it even if you are on asphalt because depending on the consistency of the asphalt material and how HOT is is from the current weather, the jack could settle a bit into the asphalt and this procedure could prevent this and keep you safe.
If you are using jackstands, use a piece of treated 3/4"x10" square, plywood under it as well to keep it from settling into the ground. Raise the vehicle only high enough to slip the jackstand under the portion of the vehicle where you will be placing it and still allow the tire to be removed.
Be SAFE and live to tell the tale. :)

Posted on Apr 26, 2009

  • 1 Answer

SOURCE: hi i have a 3 ton sears floor jack i can not

Hi,

I think I have the same jack. Th serial number was on a little sticker that is long gone,but the model number you need might needs is: 875.501390.

Hope this helps.
Gary

Posted on May 02, 2009

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    You'll need some high-grade jack oil, an Allen wrench, a rag or two, and a funnel.

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