Hein Werner leather cup

[ckleine]

I am rebuilding a Hein Werner model M 2 ton floor jack . Anyone know how to get the leather cup that's on the nain ram's piston into the cylinder without destroying it ? I soaked it in jack oil for a few days thinking that it would make it pliable enough to squeeze it into the cylinder . Not happening . I don't know if there is some kind of tiny piston ring compressor type tool that would work or not . any input will be greatly appreciated . The leather cup is about 2" and the cylinder is a little less than 1 7/8 " .

 

[rlitman]

What I would do, is cut a strip of aluminum from a soda can. Then roll that into a tube, and adjust it so it's in a slightly funnel shape. Use that to guide the leather in past the edge, and then remove it.

 

[pepi]

I'm thinking soaking it caused it to swell ................

 

[Oldtuleguy]

You need a small piston ring compressor

 

[Hiball]

Leather piston seals need to be soaked and then crimped prior to installation, if you fail to do this you will damage the face and it will never seal properly. A crimping die is essentially a block of aluminum that has been machined out to mimic a funnel, the seal is then installed on the ram and then placed inside the die seal down, then some hits with a hammer will "uniformly" draw the face inward to prevent damage to the face of the seal. If care is taken, one can manage to get the face drawn in enough using a funnel and some patience.

 

[ckleine]

Thank you for the help , all . I was thinking along the same lines as some kind of hard funnel type tool . I'll have to make something up to accomplish this feat as I can't find a ring compressor small enough . I have my doubts as to whether a ring compressor would be strong enough anyway . I do have another question , though . the ram cylinder is threaded on both ends , Same pitch . One end has about a 1/4 " bevel on the inside and the other end is straight on the inside . I kept the parts in the same position on the table throughout the dis assembly and I think the beveled end goes away from the main body . Can anyone verify this . Thanks .

 

[Provincial]

It makes sense that the beveled end would be used to help get the cup into the bore without damage. That would be the only reasonable explaination for beveling one end, unless there is a seal on the blind end that needs the bevel to work properly.

This is all speculation. I have no direct experience with this.

 

[Roberts210]

I used this plumbing gizmo as a crimping die when I rebuilt my 1.5 ton Hein Werner last year. Worked decently enough.

 

[ckleine]

Roberts210 , pure genius . That coupler worked beautifully .
thanks for the tip .
ckleine

 

[Roberts210]

Yer welcome. I like cheap solutions.