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Hydraulic cylinder

Yesterday's Tractor Forums
M

mick il

Member
I’m trying to rebuild a lift cylinder on my JD 6675. But I can’t get the nut to come loose from the head. They both turn together. I’ve tried all the oils and heat and tapping on it but nothing. I’d cut the nut off and replace it but of course it’s discontinued. Any ideas? Thanks in advance
 
mick il. said:
I’m trying to rebuild a lift cylinder on my JD 6675. But I can’t get the nut to come loose from the head. They both turn together. I’ve tried all the oils and heat and tapping on it but nothing. I’d cut the nut off and replace it but of course it’s discontinued. Any ideas? Thanks in advance
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If this is the cylinder that has a snap ring that holds the head from coming out of the barrel, the nut should only hold the head from going too deep into the barrel. You may be able to fully retract the rod which will put pressure on the head against the snap ring. That may give enough resistance to break the nut free. It would have to be hooked up the skidsteer or another hydraulic source.
 
Jim.ME said:
If this is the cylinder that has a snap ring that holds the head from coming out of the barrel, the nut should only hold the head from going too deep into the barrel. You may be able to fully retract the rod which will put pressure on the head against the snap ring. That may give enough resistance to break the nut free. It would have to be hooked up the skidsteer or another hydraulic source.
Click to expand...
That’s the one, I tried that with it in and with it out. I’m thinking the snap ring is broke so it’s turning together. I’m trying to find a new nut but of course they’re discontinued. I wonder if I can cut that nut off with delicate precision and then weld it back together. A last resort
 
mick il. said:
That’s the one, I tried that with it in and with it out. I’m thinking the snap ring is broke so it’s turning together. I’m trying to find a new nut but of course they’re discontinued. I wonder if I can cut that nut off with delicate precision and then weld it back together. A last resort
Click to expand...
I don't see welding it working very well. have a machine shop make one, if you have to cut it.
 
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