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Replacing wet sleeve square packing ring with round o-ri

S

southprairietractor

New User
My 1939 Case D had a serious coolant leak into the oil pan. Upon pulling the sleeves it was clear that the original sealing rings were completely deteriorated. The sealing ring that was removed from the block has a square profile but all the rings that are spec'd for replacement are round profile o-rings. Is there any issue with replacing the square profile with round? Will the round o ring seal properly on the block side in a square groove?
 
(quoted from post at 12:04:34 11/15/23) I don't think I'd try it. What you're looking for is called a quad ring.
Click to expand...

Probably a ''square-cut O-ring.

f1ea1a8dea1ee189fc74fd65dc10ea7c.thumb.webp

Quad ring.
 
It might have been a quad or square-cut ring, but are you sure it was
actually square to begin with? I doubt Case used two different styles
for the D, and if they're selling round cross-section ones as the
replacement, I suspect they must be correct. A round cross-section
that's been compressed into a square shape because it's in a tight
groove can take on a square shape over time - 70 years would
certainly do it. We saw it a lot with pneumatic valve spools that use
O-rings to seal the ports: Round when they go in, square when they
come out after a few years.

I'd try the round ones one there and see how tightly they seem to
compress when you go to put the sleeves in. If it seems like a good
tight seal, I think I'd be fine with it.

Theoretically you're never, ever supposed to use a gasket sealant or
similar product on O-rings, but I've heard of folks doing it at it
working just fine on some of the Waukesha's and Ford thousand series
that were known to have the blocks go porous around the sealing
rings. Might be something to consider.
 
Question; Square to round YES Round into a square groove NO... Groove round, round oring... Groove square square packing.. When installing, clean groove clean-clean!! Clean bottom sleeve, smooth smooth.. Lub up both rubber seal and outside bottom sleeve.. Soap as dawn dish soap, use a lot. Carefully start and slide in..
 
My son owns an engine machine shop. I had a Waukesha that I was working on in an Oliver Super 55 and I was putting new sleeves in it, but the block was pitted real bad. He told me to use pipe dope paste instead of dish soap. I did. That was 15 years or so ago and it's never leaked a drop.
 
The green people have a liner soap. Only manufacturer I ever heard with a specific lube comes in a huge bottle for what you need. I used it on c-15s and any other brand figuring if its for liners it should be fine since theres an oil side and a water side Im not sure how its safe and works for both but I figure if it does it should work for anything. Never had one come back for a liner leaking so...
 
Hello SPT welcome to YT! I would recommend you call
John Saeli very knowledgeable on old Cases, he will
tell you what to put in there and he will have what you
need. His family ran and still runs a Case dealership.
There is also a J. I. Case and David Brown forum on YT.
That would be a better place to ask questions about
your tractor.
Their website
 
The link to a business got used red MN's post blocked it Modern. And apparently it doesn't like the business name posted either. John Saeli's company is a good source for older case parts.

This post was edited by Jim.ME on 11/16/2023 at 04:03 am.
 
I spoke with John Saeli and he said that it's possible that the original seal was a square "packing" ring or a round o-ring in a square groove after 80 years that has taken the shape of the groove.
Either way, he said that when the o-rings were available from Case that's where he sourced them and they were always been a round o-ring. With proper installation and block condition there should be no concern sealing on the block side of the ring.
 


ROUND was the original shape. Don't over think it Plent of lube on install. .002 to .003 protrusion on the head of sleeve to block surface. CM
 
The German IH Neuss engines use a single round O ring at the lower block groove that come in two thickness size. The block groove ID needs to be measured first to find
which thickness O ring is needed for the sleeve to seal correctly.
 
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