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Case Tractors Discussion Forum
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Late SC clutch seals

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AUSTEX

10-28-2004 09:00:20




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I have a 53 SC, which I recently got running and started doing a little work with. After changing and topping off all the fluids and running a little while the crankcase level was about two quarts low which is also about the same amount of excess oil that I drained out of the overflow plug on the transmission.
After studying the parts diagram it looks like there are some seals in the clutch housing between the clutch shaft and the live PTO sleeve and gear That could be leaking.
Before I get all wound up with splitting the tractor to remove the clutch shaft, I was wondering if this had happened to anybody else and if it is a common problem with SC's with live PTO.
Otherwise it�s a great tractor. Appreciate any comments.

Geoff Stewart

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CATFISH

10-29-2004 13:46:54




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 Re: Late SC clutch seals in reply to AUSTEX, 10-28-2004 09:00:20  
WHAT A BLUNDER NOT PROOFREADING. SUPPOSED TO READ
RUNNING OLD CASE TRACTORS. WE HAD CC,SC,DC,AND LATER ON DAD FOUND A COUPLE OF 400S. HE NEVER SOLD ANYTHING. THERE IS STILL A LOT OF CASE MACHINERY SITTING AROUND.



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CATFISH

10-29-2004 11:33:12




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 Re: Late SC clutch seals in reply to AUSTEX, 10-28-2004 09:00:20  
ONLY THE TRACTORS WITH LIVE PTO HAD THOSE O RINGS.
THEY BLOCKED ENGINE OIL PRESSURE FROM THE BACK OF THE CRANKSHAFT FROM GETTING INTO THE TRANSMISSION.
I HAVE BEN SILENT BUT I WAS RAISED RUNNING AND
HELPING MY DAD RUN A SMALL FARM IN NEBRASKA,SO I LOVE OLD CASE TRACTORS. THIS IS MY FAVORITE SITE
TO WATCH,THE BOSS IS COMMING I BETTER GET BACK TO WORK!!!



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AUSTEX

10-29-2004 14:50:21




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 Re: Late SC clutch seals in reply to CATFISH, 10-29-2004 11:33:12  
Thanks for the info.
I wonder if the replacement O rings/seals are hard to find?



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CATFISH

10-28-2004 12:50:40




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 Re: Late SC clutch seals in reply to AUSTEX, 10-28-2004 09:00:20  
*I HAVE HAD THAT PROBLEM, THERE ARE TWO O RINGS ON THE INPUTSHAFT TO THE TRANSMISSION. CASE HAS A
LIP SEAL TO REPLACE THE O RINGS. THE TRACTOR DOES HAVE TO BE SPLIT. I ALSO HAD A THRUST WASHER WORE
OUT,THIS WAS ACTUALLY ON A DC BUT THEY ARE DESIGNED THE SAME.



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dctom

10-28-2004 09:03:00




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 Re: Late SC clutch seals in reply to AUSTEX, 10-28-2004 09:00:20  
the clutch on sc and dc case tractors run in oil, do not drain fill crank case to level and you will be ok there is no rear seal in engine, oil is transfered back to pan by flywheel,



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AUSTEX

10-28-2004 10:49:35




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 Re: Late SC clutch seals in reply to dctom, 10-28-2004 09:03:00  
This seems to be a continual problem. I've had to add 2-3 quarts to the engine twice in a week and also drain about the same amount excess trans. oil out. What I suspect is that these seals on the clutch shaft are allowing engine oil to inter the transmission. Mabe from a drilled passage in the back of the crank?

Doesn't sound familiar ?



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L.Lamp

10-28-2004 19:06:32




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 Re: Late SC clutch seals in reply to AUSTEX, 10-28-2004 10:49:35  
Where exactly are you draining this oil out? If it is at the plug at the bottom of the flywheel housing, engine oil is supposed to be in there. The back of the oil pan is open to the clutch housing and this area will hold about a quart or more. There is a little trough on the inside of the clutch housing that has a hole in the motor block that it matches up to so the oil will drain back into the engine when the flywheel throws it up there. On the engine, right behind the air cleaner is a raised area about an inch and a half long by about one and a quarter wide. This is where the return oil drain is to let the oil back into the engine. Take the left side clutch inspection plate off and try to poke a wire along the botton of the trough into the engine. That hole could be plugged. When you change engine oil, also remove the plug at the bottom of the clutch housing to get all the dirty oil out. When you refill the engine you will need 5 quarts for the engine plus one for the clutch and about half a quart for the filter. Buy a service manual and you will know what is happening with your tractor.

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AUSTEX

10-29-2004 08:41:42




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 Re: Late SC clutch seals in reply to L.Lamp, 10-28-2004 19:06:32  
Appreciate the comments from everyone.
I guess my message title was misleading, but I am talking about excess transmission oil. The overflow plug is the one on the back of the trans. behind the axel on the right side.
I will check the drain for the clutch housing as mentioned but it sounds like Catfish was having the same problem as I am and had to replace the same seals I am thinking of.
Again thanks for the input and I�ll see if I can give you an update once I get it apart.

Geoff

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