Rebuilding a floor jack?????

Lonesome7.3 · 05-06-2009, 03:51 AM

I have a Crapman, er I mean Craftsman 3 ½ ton floor jack. It is junk but man is it pretty.

I bought it a few years ago and got very little use out of it before it started to give out.

As much as I would love to throw it in a scrap pile, I think I should try and repair it first. I am spending enough o tools as it is so I would like to avoid buying a new floor jack if I can help it. Have any of you tried it? Can it be rebuilt and working like new again?

leolkfrm · 05-06-2009, 05:33 AM

Take it back and see if they will help!

Lonesome7.3 · 05-06-2009, 05:45 AM

They won't. The sell **** and no longer have any customer service worth speaking of an more.

bradrhale · 05-06-2009, 06:50 AM

what exactly is it not doing?? one can buy seal kits for it if this is the problem.

Lonesome7.3 · 05-06-2009, 06:54 AM

It is not leaking so I doubt it is the seals. I has lost a lot of lifting power. You can feel it getting weaker as you crank it. Plus, it takes several more cranks that usual to even get it to biuld pressure.

bradrhale · 05-06-2009, 06:56 AM

this is infact a sealing problem though. if it is not building up pressure, one os the seals inside is leaking. a hyrdalic cylinder is going to have at least 4 seals. 2 of which are visible from the outside and 2 on the bottom of the piston inside. this is probably where your fluid is bypassing not letting pressure build.

Lonesome7.3 · 05-06-2009, 06:57 AM

I wonder if a local hydro shop can help.

bradrhale · 05-06-2009, 07:02 AM

i have not rebuilt a floor jack like what you are talking about. i have been into the 20ton jacks we have at home but they use fluid/air. it doesnt take long to rebuild a cylinder and very easy to do. key is to have everything that you need so you might try taking it apart and running the cylinder up there so that maybe yall can cross referance something for the right seal kit. worth a shot anyways.

Lonesome7.3 · 05-06-2009, 07:06 AM

I would, but I need it working before I get home. I also have rebiult cylinders before. But I have never touched a floor jack. Most people have told me they cannot be rebiult. But I have the belleif that if it can be taken apart, it can be rebiult.

bradrhale · 05-06-2009, 07:08 AM

that is what i figure too. i doubt that they weld the things together. let me find one and tear it apart. ill tell you real quick if it can be done.

05-06-2009, 03:51 AM	#1
Lonesome7.3 Senior Member Join Date: Jul 2008 Location: Columbus GA Posts: 1,889	Rebuilding a floor jack????? I have a Crapman, er I mean Craftsman 3 ½ ton floor jack. It is junk but man is it pretty. I bought it a few years ago and got very little use out of it before it started to give out. As much as I would love to throw it in a scrap pile, I think I should try and repair it first. I am spending enough o tools as it is so I would like to avoid buying a new floor jack if I can help it. Have any of you tried it? Can it be rebuilt and working like new again? __________________ I got the **** lights off of an abandoned truck in Iraq.

05-06-2009, 05:33 AM	#2
leolkfrm Senior Member Join Date: Mar 2008 Location: N.Y. Posts: 4,300	Take it back and see if they will help! __________________ 4 wheels move the body 2 wheels move the soul B.W.A.I

05-06-2009, 05:45 AM	#3
Lonesome7.3 Senior Member Join Date: Jul 2008 Location: Columbus GA Posts: 1,889	They won't. The sell ** and no longer have any customer service worth speaking of an more. __________________ I got the ** lights off of an abandoned truck in Iraq.

05-06-2009, 06:54 AM	#5
Lonesome7.3 Senior Member Join Date: Jul 2008 Location: Columbus GA Posts: 1,889	It is not leaking so I doubt it is the seals. I has lost a lot of lifting power. You can feel it getting weaker as you crank it. Plus, it takes several more cranks that usual to even get it to biuld pressure. __________________ I got the **** lights off of an abandoned truck in Iraq.

05-06-2009, 06:57 AM	#7
Lonesome7.3 Senior Member Join Date: Jul 2008 Location: Columbus GA Posts: 1,889	I wonder if a local hydro shop can help. __________________ I got the **** lights off of an abandoned truck in Iraq.

05-06-2009, 06:50 AM	#4
bradrhale Senior Moderator Join Date: Apr 2006 Location: Texas Posts: 8,025	what exactly is it not doing?? one can buy seal kits for it if this is the problem.

05-06-2009, 06:56 AM	#6
bradrhale Senior Moderator Join Date: Apr 2006 Location: Texas Posts: 8,025	this is infact a sealing problem though. if it is not building up pressure, one os the seals inside is leaking. a hyrdalic cylinder is going to have at least 4 seals. 2 of which are visible from the outside and 2 on the bottom of the piston inside. this is probably where your fluid is bypassing not letting pressure build.

05-06-2009, 07:02 AM	#8
bradrhale Senior Moderator Join Date: Apr 2006 Location: Texas Posts: 8,025	i have not rebuilt a floor jack like what you are talking about. i have been into the 20ton jacks we have at home but they use fluid/air. it doesnt take long to rebuild a cylinder and very easy to do. key is to have everything that you need so you might try taking it apart and running the cylinder up there so that maybe yall can cross referance something for the right seal kit. worth a shot anyways.

05-06-2009, 07:06 AM	#9
Lonesome7.3 Senior Member Join Date: Jul 2008 Location: Columbus GA Posts: 1,889	I would, but I need it working before I get home. I also have rebiult cylinders before. But I have never touched a floor jack. Most people have told me they cannot be rebiult. But I have the belleif that if it can be taken apart, it can be rebiult. __________________ I got the **** lights off of an abandoned truck in Iraq.

05-06-2009, 07:08 AM	#10
bradrhale Senior Moderator Join Date: Apr 2006 Location: Texas Posts: 8,025	that is what i figure too. i doubt that they weld the things together. let me find one and tear it apart. ill tell you real quick if it can be done.

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