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crank pulley

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Bill Geer

04-26-2005 19:21:01

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trying to put the crank shaft pulley back on a farmall C. screwed a 7/16 x 20 fine threaded rod in the crank. pulled it about half way on. then pulled the rod out of the crank.is this the right size? I need help. any tricks and or advice. thanks Bill

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BILL gEER

04-27-2005 19:49:49

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Re: crank pulley in reply to Bill Geer, 04-26-2005 19:21:01

Thanks guys . Igot the pulley back on tonight.turn out the threads in the crank are 1/2 corse. honed I.D. of the pulley a little and it pulled on easy.

Thanks again Bill

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George Willer

04-27-2005 09:55:33

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Re: crank pulley in reply to Bill Geer, 04-26-2005 19:21:01

I can only speak with authority about Cubs, but it would be a surprise if the thread was different... especially smaller than the Cub's 1/2 x 20. Heat the pulley a bit. I use an electric hot plate. Don't try to bury the engine in the snow and *never* hit it with anything!!! Hitting the crankshaft on the end is a serious crime!

George Willer

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David in UT

04-26-2005 20:25:34

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Re: crank pulley in reply to Bill Geer, 04-26-2005 19:21:01

Bill,

Yep, I'm pretty sure too that the pulley on the C is the same as the A...there's a shoulder it rests against, so you should be able to tap it back on until it stops. I've got a C crankshaft and the pulley in my office, so I'll double check on that.

When I did mine, I first polished the crankshaft end with some fine sandpaper, just to make sure it was smooth. Then I put a little fine oil on it, e.g. WD-40 or similar. I put a block of wood in front of the pulley, then I tapped on the wood. "tapped" may not be the correct verb...I think I did need to hit it with some force, but it wasn't like I was whaling away on it.

Feel free to email me if you like and I can take some pics of my C's pulley for you.

- David

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JBlavl

04-27-2005 06:15:48

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Re: crank pulley in reply to David in UT, 04-26-2005 20:25:34

You shouldn't be hitting the pulley back on the crank unless you want to replace the thrust bearing. The way you were doing it was correct. I don't know the size exactly so someone will hopefully be able to help you. But heat can help and you could always tap the threads if you boogered them up.

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David in UT

04-27-2005 07:21:18

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Re: crank pulley in reply to JBlavl, 04-27-2005 06:15:48

Dang...ain't it amazing how clear things become when you hear the right answer? JBlavl, thanks for the correction -- it makes perfect sense! Well, if I'm supposed to learn something new every day, I can go back to bed for today! ;-)

Cheers,

- David

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Brian in Toronto, Ontario

04-26-2005 20:14:11

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Re: crank pulley in reply to Bill Geer, 04-26-2005 19:21:01

If that crank pulley is like the one on the A, there is a shoulder, and you can't go any further then that. I believe when I put on mine I used some heat, and had the other part out in the snow..... I seem to also recall the use of a piece of hardwood and small sledge hammer.

Hope that helps.

Brian.

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