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Craftsman 4 ton floor jack #5351393 02/16/20 06:50 AM
Joined: Feb 2020
Posts: 5
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mirvingm Offline OP
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Joined: Feb 2020
Posts: 5
My Craftsman floor jack will not release the pressure to lower? I've investigated the internal parts looking for o-rings to replace? There are none. Yet? With most of the internal parts removed I still have to jump on the lift plate to get it to reluctantly go down?

I'm at a loss where to go from here? I've included pictures to help tell the story. The ATF was used to try to flush the system out? With no results.

thumbnail-7.jpegthumbnail-11.jpegthumbnail-10.jpeg
Re: Craftsman 4 ton floor jack [Re: mirvingm] #5351413 02/16/20 07:40 AM
Joined: Mar 2013
Posts: 6,564
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skyactiv Offline
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Joined: Mar 2013
Posts: 6,564
With how dirty that jack is from leaking fluid and the fact you don't know how to fix it properly, take it to someone who can or throw it out.


Wife: 15' Audi A4 quattro 6 speed manual
Me: 18' Elantra Sport 6 speed manual
The rude guy that points out reality


Re: Craftsman 4 ton floor jack [Re: mirvingm] #5351452 02/16/20 08:40 AM
Joined: Nov 2008
Posts: 4,312
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JC1 Offline
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Joined: Nov 2008
Posts: 4,312
Not sure how much you took apart based on your pictures.

Did you check Youtube?

https://www.youtube.com/watch?v=G3YimmBeRSw


2015 Grand Caravan SXT Plus 0w-20 Pennzoil Ultra/Fram Ultra Filter
1997 Honda Civic CX 5w-30 PPPP/Fram Ultra Filter
Re: Craftsman 4 ton floor jack [Re: mirvingm] #5351569 02/16/20 10:34 AM
Joined: Jun 2002
Posts: 7,337
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doitmyself Offline
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Joined: Jun 2002
Posts: 7,337
Welcome to our asylum mirvingm from Chassel, MI. I spent a bit of time up there while at MTU and have some fond memories of Baraga, Lanse, and Alberta.

I would join up at Garagejournal.com tool threads and seek out the wisdom of a respected gentleman there that goes by the name of Hiball. He rebuilds jacks for a living.

Stay warm!

Re: Craftsman 4 ton floor jack [Re: mirvingm] #5351574 02/16/20 10:44 AM
Joined: Mar 2004
Posts: 24,088
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Donald Offline
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Joined: Mar 2004
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Have you cleaned all the dirt & grime off the areas of the jack that move and then lubed them? Maybe it's just binding a bit and needs to be cleaned & lubed.


2015 Ford F-250 w/Powerstroke
2016 Subaru Crosstrek CVT (wife's)
Re: Craftsman 4 ton floor jack [Re: mirvingm] #5351598 02/16/20 11:08 AM
Joined: May 2014
Posts: 1,774
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philipp10 Offline
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One of two things. Either a mechanical binding or the hydraulic valve is not allowing fluid to drain back. And I don't agree it needs to go in the trash pile. It does however probably need new seals with all the leaking that looks going on.

Last edited by philipp10; 02/16/20 11:09 AM.
Re: Craftsman 4 ton floor jack [Re: mirvingm] #5351631 02/16/20 11:39 AM
Joined: Aug 2015
Posts: 444
KJSmith Offline
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Joined: Aug 2015
Posts: 444
A long body jack like that is very expensive to replace.
If you can't fix it, find somebody who can.

https://www.hcrcnow.com/shop/seal-kits/craftsman-sears

Re: Craftsman 4 ton floor jack [Re: mirvingm] #5351645 02/16/20 11:56 AM
Joined: Dec 2018
Posts: 908
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Farnsworth Offline
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Joined: Dec 2018
Posts: 908
Nice links in thread. You may have a USA made Walker jack. Worth fixing. May be a clogged bleeder circuit. Holding steady is better than coming down. Something like this new is probably over $500 and it’s only assembled inUSA with some USA parts and some fromChina.

Re: Craftsman 4 ton floor jack [Re: mirvingm] #5351650 02/16/20 12:01 PM
Joined: Nov 2018
Posts: 44
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Wolfshead Offline
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Joined: Nov 2018
Posts: 44
Try to save it,Many will direct you to Harbor Freight for their Asian Junk !

Re: Craftsman 4 ton floor jack [Re: mirvingm] #5351709 02/16/20 01:01 PM
Joined: Aug 2010
Posts: 7,489
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Kira Offline
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Joined: Aug 2010
Posts: 7,489
Friend went to automotive school.
A friend of his had a Dad who worked in a bus garage.
The Dad alerted the guys that there was a BIG (10 ton?) floor jack in need of repair.
Friend rebuilt it and welded cracks in the body.
He said, "Don't paint it. Let people see that it's repaired".

Soon thereafter the jack was painted and back in service.

It really twisted my friend up. He wanted to hit an alarm but......

Re: Craftsman 4 ton floor jack [Re: mirvingm] #5351855 02/16/20 04:00 PM
Joined: May 2014
Posts: 4,609
Yah-Tah-Hey Offline
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Joined: May 2014
Posts: 4,609
Probably bound up mechanically from lack of maintenance over ?? years. Start with the two main pivot points shown in #3 photo. Too nice of jack to throw away. You can't purchase a jack like that today without spending big bucks.

Re: Craftsman 4 ton floor jack [Re: JC1] #5352353 02/17/20 06:51 AM
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mirvingm Offline OP
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Joined: Feb 2020
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Completely different hydraulics on mine. I did watch it. Thanks.

Re: Craftsman 4 ton floor jack [Re: Yah-Tah-Hey] #5352355 02/17/20 06:54 AM
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Posts: 5
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mirvingm Offline OP
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I have greased the main pivot points on the handle pump side of the jack.

Re: Craftsman 4 ton floor jack [Re: skyactiv] #5352357 02/17/20 06:58 AM
Joined: Feb 2020
Posts: 5
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mirvingm Offline OP
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Joined: Feb 2020
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The fluid is from dumping out the old oil. It has no leaks.

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