Help! Damage to cylinder

[J_J]

Here are some more post about welding on cyl.

http://www.tractorbynet.com/forums/hydraulics/150750-welding-hydraulic-cylinder-ok-without.html

 

[TraderMark]

I am hoping it can be welded back on somehow so with that in mind I've removed the cylinder and the snap ring thinking that the piston rod should come out, but no luck. Dealer says a firm smacking pull should do the trick but I've done that with the other end secured firmly and nothing moves. In fact looking at the slot and the ring I'm puzzled as to how that ring retains anything.

Jack

Jack,
IIRC, there's another ring holding your cylinder together.
I'll attach a drawing so you can see the parts I'm refering to.

I think you've already removed the outer ring, item #3.
Once you remove this ring you must push/gently drive the gland back into the cylinder barrell so that you can access the second ring, item #8.
After you remove the second ring, you should be able to pull the rod and gland out of the barrell.

Item #3 keeps the gland from going back into the barrell. Item #8 is what actually prevents the gland from coming out of the barrell.

Hope this helps.

Mark

 

[TraderMark]

Jack,

Looking at that diagram again, I may be wrong.
They show item #8 as a split ring in one place and as a solid ring that's part of the packing kit in another place.


Easy way to tell is ... if item #3 goes in a groove on the outside of the gland, you'll have to follow the procedure I described.

If item #3 fits in a groove on the inside of the barrell, you should be able to remove item #3 and then pull the rod and gland assy out.

Sorry for the confusion!

Mark

 

[wdchyd]

Pix..??

What nothing to look at before second guessing how it fix it..??

 

[JackDWaller]

Thanks very much for the recent posts, guys. They are most helpful, especially relative to getting the cylinder apart. If I do just that, I may need a comment regarding the second snap ring and that "special tool or ring" that was mentioned in an old post.

For now I have a small bearing endcap that is close to the right bore that I will resize. That will mate with a square block of steel that's getting machined this morning that will form the other half of the circumferential collar that will have the nipple fitted to it. With the paint removed and a close tolerance fit I am confident that I can get a good seal over the hole where the nipple broke free. Because this break is so close to the end I'm hoping that there is no distortion.

I don't have a good working camera but I'll try to get some pics and I'll report back on how the "milking of the cow" went. Thanks again - I sure felt sick yesterday with a $600 fixit looming before Christmas!

Jack

 

[wdchyd]

I'm mixed up, You mean that the hyd fitting broke off....??

 

[J_J]

I believe he said the cyl port extension and that is why he iswelding a new one on.


JackDWaller said:

I won't go into the gory details except to say that a chain hook snagged the hose attaching stud (rod end) and cleanly ripped it off.

 

[wdchyd]

OK, missed that......that's an easy fix......

 

[JackDWaller]

Here's the latest. BTW if it's an easy fix then please give the detail of how you would go about it.

I machined the collar and all that, bolted it on, and only one problem - a pin hole in my weld (was tricky welding without contacting thread on the nipple). So off it came and now it doesn't weld as well because of oil residue, and instead of being fixed it's now got a very tiny seapage at the base of the weld. Just enough to make a dirty mess in time. The seal to the cylinder is fine. A touch more welding ?? or maybe a touch of epoxy?? but no big deal other than I'm annoyed.

At least I now know that I won't have to spend the $600 or whatever an alternate ram would cost. There is definitely no damage to the cylinder, thankfully.

I'll still try to get a pic for those who are curious about what has been going on, and thanks to all.

Jack

 

[wdchyd]

Here's the latest. BTW if it's an easy fix then please give the detail of how you would go about it.

Jack,

I do this almost everyday of the week.....what seems unusual to most, is ordinary to us (me and two full timers)

You say "I machined the collar and all that, bolted it on,".....:confused2:..., I'd disassemble, clean, grind off old fitting, use new fitting (grind for fit up), weld it up, repack with new seal kit and test.....

'bout a hour and a half of work.....Done......Done right.....

Pix would always be helpfull when giving advice cuz I cannot see what you have to start with.....