Hyd cylinder pin that will not come out HOW???

old · Sep 3, 2011

Ok so I have 2 hyd cylinders that I want to remove from the part they are in. So far I have not been able to get either pin so so much as move a 1/16 of an inch. One the one I can get my port-ta-power but it is only a 4 ton unit and it does not move the pin. So any ideas of how to get the pins out???
Thanks. Oh by the way these are single acting cylinders if that says any thing and are the cylinders off a Sherman back hoe the part you have on the ground to hold the unit from moving

in-too-deep · Sep 3, 2011

Cut 'em out with a torch. They're probably worn and not straight anymore.

old · Sep 3, 2011

But the cylinders are what I want to save and yes they are still in pretty good shape so that is not an option since to cut any of it would hurt the cylinders

Ken Macfarlane · Sep 3, 2011

If you can get the portapower on the pin why can't you get the torch onto it? Should be able to blow the pin out.

37chief · Sep 3, 2011

How about using a large punch. Back up the other side with a heavy piece of metal. I would hold the punch with a chanel, lock unless you are a good shot with a hammer. I was a fairly good shot with a hammer, but age has spoiled my aim, got tired removing skin. Stan

in-too-deep · Sep 3, 2011

You should be able to cut/melt/blow the pins out with the torch without hurting the cylinder yokes. The more you press on the pins, the tighter they're gonna get if they're worn the way I think they are.

massey 333 · Sep 3, 2011

You still didn't say if you want(need)the cyls.off the hoe or just the pins out of the cyls.If you need the cyls.off the hoe you might have room to use a Sawsall and cut them out so you can then work on them.I have had to do that before when the pin is inbedded into the cyl/housing itself.

old · Sep 3, 2011

Got them both out. I just had to apply enough heat to get the pins warm then put the port-a-power back on and they popped right. Took a while but they are not out of the cylinders and no need to heat them up super hot that way. Thanks for your idea

Deere Scotty · Sep 3, 2011

If You want to remove the pins with the least amount of damage try using a HEAVY 2, or 3 leg bearing puller. Spray the pins with penetrating oil, & tap with a hammer. You might have to drive the pin both directions a couple of times spraying the oil on it from both sides to move it all the way out. Take a drill or a hardened punch, & knock a round dent in the center of the pin to hold the center point of the puller. If You put the puller on both sides then drill the indention on both sides.

old · Sep 3, 2011

Think about what you said. I had a 4 ton port a power on those pins and they would not move so NO puller will even begin to do any thing. I ended up having to use some heat and once that was done they moved. Oh by the way I had been pouring ATF on the pins for at least a week

in-too-deep · Sep 3, 2011

Good to hear! Best part is, you can still use the pins and you didn't burn yourself!

old · Sep 3, 2011

Well as far as using the pins again I did grind off the stop part of them so I could push them out. The end that had a cotter pin in was such that I broke the scissor thing that was with the port a power trying to move the pins so I used a grinder to cut off the stop end of the pins

NCWayne · Sep 3, 2011

Hey Old, you'd be suprised how much force can be applied with a screw (ie - puller). You say you had a 4 ton ram on the pin and that NO puller can apply that much force. Hate to tell you but OTC, and others, makes pullers with WAY, WAY more pulling/pushing power than 4 tons. Personally I've got one that is rated at 30 tons and several alot smaller than it is that are rated at least 5 tons. Beyond that, and maybe it's more of a 'special tool' than a puller, per se, but I've also got the rams and legs for pulling sprockets on CAT final drives. The two rams are rated at something like 75 tons puch and 73tons pull on the smaller one, and 103 tons push and 100 tons pull on the larger one.

Like I said there are many pullers/pushers that will do way more than the 4tons your talking about.

Hyd cylinder pin that will not come out HOW???

old

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in-too-deep

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old

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Ken Macfarlane

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37chief

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in-too-deep

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massey 333

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old

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