1941 Case SC Transmission Rebuild

Hello all. Been a while since I have posted, but I am always reading. I'll cut right to the chase on this. Many of you have seen the '41 SC center exhaust I have. I did an engine teardown and rebuild about ten years ago, but never touched the transmission (I should have). I am looking at now tearing it down and doing a complete overhaul on the transmission. Has anyone done this recently on the SC? Any bearings or seals that are no longer available? I think that the left brake pinion will need a speedy-sleeve installed (or pinion shaft replaced) as I resealed it a few years ago but never could get it to quit leaking. The old girl is growling pretty good, so I would imagine that it is a combination between loose chains and worn bearings. It also pops out of 2nd gear while going down a steep hill. My guess would be a worn gear.

I'll be chronicling the entire process on my YouTube channel, so that future generations can reference and enjoy the process for their own projects. Not a whole lot out there for Case SC teardown or repair videos (other than mine).

Look forward to your responses. I know Don Livingston and John Saeli are great sources for parts. Picture is just for fun. Was getting some brush cleared and smoothing out some dirt before planting a little grass. Also included a video link below.

Case SC Doing Yard Work

Say I would really enjoy watching that rebuild!

Kenny there are a few guys around here who can really help you along with that project! I know I would like to apply that experience to my DC somewhere down the road.

I would suggest RonSa as a person to talk to right away. He is on this forum and knows the Letter Series tractors well.

Say I would really enjoy watching that rebuild!

Kenny there are a few guys around here who can really help you along with that project! I know I would like to apply that experience to my DC somewhere down the road.

I would suggest RonSa as a person to talk to right away. He is on this forum and knows the Letter Series tractors well.

I have a 1941 SC also with a noisy transmission. My name is Kenny also.

All I need is a plane ticket, Lets get started Ken.CM

No lain bearings available. I stonned mine to get proper spec clearance.

Guess I have some learning to do - I don't understand a word you just said! Ha ha. I just finished my first transmission rebuild on a Farmall H. Wasn't too terrible. The SC will be a little different animal, though.

Let me finish up the Suicide Awareness Farmall H first! Ha ha. Test fit the tinwork last night. All that is left is bodywork and paint on the last few pieces.

I'm not intimidated by the teardown and reassembly, but moreso am concerned about what is still available. I don't want to tear it apart and then not be able to put it back together because things have to be custom made due to being no longer available. I know that most seals can likely be cross referenced.. Probably most of the bearings as well.... But what about the ones that can't? Used or NOS - but NOS from JI Case is unlikely.

Two Kenny's don't make a right! Ha ha!

I recently replaced the seals in my DC transmission. When I had the top cover off I noticed that almost all of the gears had part of the teeth ground off, I believe this is from previous owners trying to shift while the gears are rotating. I would suspect that most letter series Case tractors of this vintage have similar wear on the gears. I HIGHLY recommend following the procedure outlined in the service manual when disassembling the transmission. I have not checked for availability on the drive chains, but I expect that they are still available from farm supply stores like Bomgaars. If you have never been into the transmission and the axle housings are still fairly far forward I would expect that your drive chain is running loose and wearing grooves in your transmission housing. My DC had grooves in the housing from this, I was able to adjust the axle to tension it, but if you are going to rebuild your transmission replace the chains and you should be good for another 80 years. It is amazing how much abuse these tractors can show and yet still run.

Ken. This site may help in finding replacement seals. Just put in the original Case part number and it will tell you the modern seal to use as a replacement. Sometimes it will also show the speedy sleeve needed. http://www2.chicago-rawhide.com/popup_parts_lookup_457012.htm

might be a thought to check on the available sc tranny parts from a salvage yard. sounds like you'll need a new(haha) 2nd gear and maybe others once you get in there. I rplaced 3 different gears in my vac when into the tranny. 2nd gear would pop out of gear like you described, reverse and third were badly worn, was able to get better gears from salvage. gobble

Ken would you like to come down to my neck of the woods and work on a few more tractors? An H an M, a couple Case VAC's, DC4, a Case 600 combine, grain drill and running gear with hoist and a Case plow?.

Thank you for the link! I actually have used this site A LOT through the Farmall H restoration I am working on. It sure is a helpful tool!

If it is anything like the Farmall H I am finishing (a true nut and bolt restoration), the deeper you dig, the BIGGER the hole you find yourself in (as if you wouldn't expect that). Ha ha. She definitely needs some work.

All good information. I also thought about installing standard S drive sprockets to get a couple more MPH out of the rear end... But, doing that will sacrifice power to the ground as well. We will see what happens when I tear into it. Gotta finish up the Farmall H restoration first.

I am flattered and honored to have the invite, but unfortunately I barely have time between work, home, and family to work on the tractors I have. Ha ha ha. I actually had to part with 4 of my 7 tractors. It just became too much to manage at this stage of our young family's life.

Main did not sorry did not notice missing M . Stoning is a term used in millwright work. Its more accurate than using a file. A rubbing stone is used which is of an abrasive construction. This leaves a smooth surface . Close to the type of stone one would use in sharping a pocket knife. Hope this helps in your understanding.

That makes sense. Still beyond my caliber of machining skills and abilities. I am used to an angle grinder, die grinder, files, and bench grinder to use as my machining tools. I thought I was onto something when I bought my first tub of valve lapping compound! Ha ha.

We will see what we are working with when I get around to tearing into it.