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Sherman Transmission question

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Allen in Oregon

07-27-2002 12:27:22

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Do the 8n and 9n share the same input shaft? I found a 9n tractor with sherman over and under (tractor is running but all sheet metal is rusted off)for $1000.00. Same guy has 8n with front end loader, no sherman and needs head gasket. i am thinking about buying both and parting out the 9n and putting the sherman in the 8n. Any thoughts?

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Rusty 2N

07-27-2002 12:49:57

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Re: Sherman Transmission question in reply to Allen in Oregon, 07-27-2002 12:27:22

I don't believe they are the same. The 9N has sttraight gears whereas the 8N has helicol gears on the input shaft. Someone will correct me if'n I'm wrong.

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Dell (WA)

07-27-2002 14:42:24

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Re: Re: Sherman Transmission question in reply to Rusty 2N, 07-27-2002 12:49:57

Allen..... ..what Rusty sez..... ..early 9N's had straight cut tranny input gear. BUT sometime in 1940 they changed to helical gears and have a "HX" stamped on tranny case flange. This will fit with 8N Sherman tranny input shaft.

Most do a visual 9N tranny input gear inspection, it is a rather obvious difference between straight cut and helical cut gears, not a micrometer kinda thing..... ...Dell

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John Smith

07-27-2002 20:59:28

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Re: Re: Re: Sherman Transmission question in reply to Dell (WA), 07-27-2002 14:42:24

In this case it really doesn't matter. ALL Shermans have a helical (angle cut) gear on the input shaft. If you put one in an early 9N you gotta change the mating gear in the 9N transmission to a helical. Bottom line, it will swap to the 8N, no problem.

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Allen in Oregon

07-27-2002 21:26:48

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Re: Re: Re: Re: Sherman Transmission question in reply to John Smith, 07-27-2002 20:59:28

Thanks, that is good news to me!

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Allen in Oregon

07-27-2002 14:48:01

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Re: Re: Re: Sherman Transmission question in reply to Dell (WA), 07-27-2002 14:42:24

Thanks for the info. This will help when I go back to inspect. I think I will go ahead and buy both tractors. $2000.00 for two tractors, Could be a good deal. Keep on posting & Happy tractoring. (:>{)

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