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super c crankshaft pulley

I

IH10020

Member
Putting a crankshaft pulley on a super c, Do I need to heat the pulley in the oven & if so how long @ what temp? Thanks and Merry Christmas!
 
Heating can help. About 250 for a half-hour or so, just long enough to get it heated thoroughly. Too much hotter than that and you run the chance of damaging the seal.

It will go much better if you have the end of the crank good and clean, as well as the bore of the pulley.

And if you're heating it, it's always good to have the tractor as close to the oven as you can get it.

If using the bride's oven the following tips are helpful:
1) send her to town on a wild goose chase (sailboat fuel, relative bearing grease, metric adjustable wrench . . .), preferably to the county seat of the next county over.
2) Clean the pulley well with brake cleaner or something of that sort, that doesn't leave a residue, before putting in the oven.
3) Have a roll of cookie dough on hand. While the pulley shrinks to the crank, and cools, bake the cookies to cover any residual odors.
 
Don't tighten the bolts in the timing gear cover until you have the pulley installed. I would put some lubri-plate on the lip of that seal too.
Hal
 
Why not tighten the bolts? Going to do one soon, never have done one before. Also, the pulley has threads for a bolt to pull in the pulley -- will that work without heating?
 
It's kind of like aligning a clutch disc. The seal around the pulley is mounted in the timing cover. You don't want it flopping and shifting around on its own, but you want to leave the timing cover loose so that you can shift it to center the seal around the pulley.

The threads are good for drawing it down. Using them certainly is better than beating on it, which can damage the thrust surfaces of your main bearings, though a light judicious tap wouldn't hurt any.

I've never been able to get one off without heat. It takes a lot less to got it back on and I've just always found the job goes better having heated it.
 
Just got my January-February 2010 issue of Red Power Magazine and there is a really good article on this subject and rebuilding the C-113 and C123 engines. It is authored by the Tractor Doctor who goes by the name of Ron O'Neill of Oshhosh, WI. This article will answer almost anything you might have in rebuilding these two IHC engines. Great read - reading through this issue has been my night before Christmas. Hope everyone has a wonderful Christmas and a great 2010, Hal.
 
Thanks --- When I get ready to put it on I will decide what to do. The timing cover is a near exact fit, the pulley is an exact fit. They should line up perfectly. Particularly since the lip will be facing to the rear. If it was facing to the front, that would be a different matter. I like to put copper coat on the gaskets and don't like them drying out while I'm messing with something that may be difficult to get on -- that's the reason I asked. If the bolt doesn't work I can pull it off again and use heat. But, because of the seal, I don't like the idea of heating the pulley, because it is a major operation to get everything apart again if the thing leaks. As to getting it off, I spent about $130 for a bearing separator, the puller popped (loud!) it loose at about the time I thought I was going to break something.
 
Charles, see my post above on this thread, wait to you get your new issue of Red Power magazine as you will really want to read it if you are about to get into a C-113 or C-123 engine. Have a great Christmas and a great 2010, Hal.
 
Thanks, merry Christmas to you, too. The Super A is completely (and I do mean completely) apart and sort of laying in a pile. Engine is in machine shop, have not ordered the kit yet, but I know which one to get. Should get my issue of RPM in the next few days, though.
 
I have used the heat in oven 250-300 30 minuets with no problem at all goes on easy. Made myself a puller can get them rascals off with no problem. Will try post pic of puller very simple to make. I also assemble mine and put on pulley.
 
why does everyone seem to make it so hard to put the lower pulley on the crankshaft of the 123 C engines. Just press it back on!!!
Use the diamensions of the 14in square tubing and make one. Use 5/8th althread bolt and 4 nuts per bolt.





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<a href="http://s42.photobucket.com/albums/e329/Keith-OR/?action=view&current=InstallingSCpulley2.jpg" target="_blank">
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You leave the bolts loose so when you install the pulley the cover & seal will center itself.
You could probably heat the pulley to 200 degrees and use that 1/2" center hole in the crankshaft to press the pulley on. That pulley is going to cool a lot by the time you get it installed. Probably won't be any hotter than when you've worked the tractor all day in 90 degree heat. Is that pulley hub nice & smooth?
Hal
 
It's smooth enough, haven't paid much attention to it. I will sand it lightly and it will be squeaky clean when I install it.
 
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