50 SC Engine Question

rasman57 · Apr 23, 2015

It sat for 15 years in the barn. Ran when parked. Loose engine. Spent a lot of time getting it ready for first start. All new fluids. Tank Drained and cleaned. New battery and tune up parts. Carb rebuilt etc. Radiator removed/flush block.

Started on first try and except for the dead bird and feathers, that were hidden in the manifold, shootin out it was cool! Now after running about an hour total looking for leaks we find a good one dripping from the flywheel area inspection cover.

Rear main we are thinking but this is the first SC we have fooled with. Is that still available? Is there another suspect seal I should be looking for when we split it. Actually have not seen the leak as my buddy just called. I asked him if it could be gear oil from the trans and wondered if it could seep forward. New clutch etc will be going in anyway but just curious about one versus the other or what you have found before?

Appreciate any experience or info.

kevsdodge · Apr 23, 2015

SC's are a wet clutch system. Engine oil is the source of the lubrication. There is no rear main seal on these engines. There is a gasket that goes between the engine/oil pan
and the transmission. This gasket is leaking. You and try to replace the oil pan gasket and the transmission front end gasket (05909AB) with out spliting the tractor. You will
have to cut the transmission front end gasket down to be only the area compressed by the oil pan. If the really need to replace the clutch then you will need the gasket complete
anyway

rasman57 · Apr 23, 2015

Thanks for the info. I am sure it is gonna get split anyway so that helps. I can say the difference in the Case manuals from 50 and my 56 300 Roundnose is extensive. Mine is much more in depth. The 50 Service Manual is not as good as we had hoped for and I am still watching for a parts manual.

Appreciate the reply.

L.Fure · Apr 23, 2015

(quoted from post at 18:17:22 04/23/15) Thanks for the info. I am sure it is gonna get split anyway so that helps. I can say the difference in the Case manuals from 50 and my 56 300 Roundnose is extensive. Mine is much more in depth. The 50 Service Manual is not as good as we had hoped for and I am still watching for a parts manual.

Appreciate the reply.

Is the clutch bad? Is that why you want to split the tractor? I have never seen an DC or SC clutch go bad. Unless it has been abused. In which case it would totally fail. Then there would be a need to split the tractor. I've seen old timers "slip" these clutches every time they were backing a wagon, or other implements for years and never wear the clutch out.

rasman57 · Apr 23, 2015

He is wanting to do the family tractor restoration and does not want to have any do overs. He is going to go through it and do it once. The.... might as well.... method. He also does not have Grandpa around any longer and no one else knew anything about the tractor. Clutch may be original or almost new. The gasket for sure is shot he says as it leaks the engine oil now that it has been started with fresh oil and run a while.
Couple of interesting farmer "improvements" like a left side pipe fitting brazed into the oil pan that mimics the right side sort of. Maybe just parked it in the barn close to the wall and wanted to be able to use the left side. Eagle hitch has been removed and a couple home made lines added to run something years ago too. Neat stuff.

01gentdc · Apr 23, 2015

congrats on getting her runnin ,, now , deal with those dry seals ,,go get some Lucas hub sealer for the tranny and Lucas engine oil stabilizer stop leak for the engine ,,. get some lucas fuel additive upper cylinder lubricate for the gas. that's what I do to all of mine I resurrect,,..most times the seals will swell and hold good as new ..

Bhunt · Apr 23, 2015

Rasman57 congrats It may not have ever had an eagle hitch on it because they didn't start until some say late 51 but for sure 52 It would probably also have dual hyds.

wilson ind · Apr 23, 2015

does not the sc have an adjustable clutch unless its a foot clutch model. Determine year , serial number less 4 gives year.

wilson ind · Apr 23, 2015

If you do not have a parts it would be a good investment. Splitting pins make new clutch installation an easy quick job. A operators Manuel also is handy.

Bhunt · Apr 23, 2015

I did the same thing It says 50 in the title. For some reason some post are visible in the classic view and not the modern view and vice versa.

casecollectorsc · Apr 23, 2015

Seems like he doesn't understand the concept of a wet clutch. The clutch housing has engine oil in it. The gaskets on the inspection covers can be replaced to stop the leak there. If it is leaking where the engine and clutch housing come together, then it needs a split to replace.

rasman57 · Apr 23, 2015

You are right....I have not worked on a wet clutch tractor. My 56 300 Roundnose, 69 580 Construction King, 60 D-14 Allis Chalmers and 39 Allis B restorations all were dry. I look forward to learning more on his 50 project SC. Manual is okay but pretty basic. He has the operators manual and we are watching for a parts book as all of my projects went smooth when Used in conjunction with the service book.
The leak is between the engine and the trans.
Thanks for the help men.

Bhunt · Apr 23, 2015

(quoted from post at 03:21:58 04/24/15)
You are right....I have not worked on a wet clutch tractor. My 56 300 Roundnose, 69 580 Construction King, 60 D-14 Allis Chalmers and 39 Allis B restorations all were dry. I look forward to learning more on his 50 project SC. Manual is okay but pretty basic. He has the operators manual and we are watching for a parts book as all of my projects went smooth when Used in conjunction with the service book.
The leak is between the engine and the trans.
Thanks for the help men.

Rasman57 send me an Email I can help you on the parts book no charge [email protected] On your leak There's a hole in the forward most part of the clutch compartment under the bell housing and clutch plate overflow oil coming in to the clutch compartment is returned to the oil pan I would look at that area. The clutch compartment has a small drain plug on the right side of the tractor for the clutch area it will hold about maybe a quart of oil.
Good luck on the SC Byron

Christopher Mikesell · Apr 23, 2015

The foot clutch models do have an adjustment (3 screws) for the throw-out levers. The foot clutch service bulletin says how to do it (with the flywheel removed).

Bhunt · Apr 23, 2015

Christopher Where did you find the service bulletin? Also You got me wondering on the radiator issue. I went and looked at mine you were right no thermostat. I never had a reason to look but Thanks Byron

rasman57 · Apr 24, 2015

Thanks Byron EM sent! sras3142@sbcglobal dot net

Bhunt · Apr 24, 2015

(quoted from post at 14:58:26 04/24/15)
Thanks Byron EM sent! sras3142@sbcglobal dot net

I never received your email but glad you put yours I have sent you the information.
best of luck Byron

50 SC Engine Question

rasman57

Member

kevsdodge

Member

rasman57

Member

L.Fure

Well-known Member

rasman57

Member

01gentdc

Well-known Member

Bhunt

Member

wilson ind

Well-known Member

wilson ind

Well-known Member

Bhunt

Member

casecollectorsc

Well-known Member

rasman57

Member

Bhunt

Member

Christopher Mikesell

Member

Bhunt

Member

rasman57

Member

Bhunt

Member

Similar threads