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Farmall & IHC Tractors Discussion Forum
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super m----450

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ssabmud

09-19-2006 15:16:43




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will a belt pulley from a super M with out T/A work on a 450 with T/A

thanks




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D Slater

09-19-2006 16:40:15




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 Re: super m----450 in reply to ssabmud, 09-19-2006 15:16:43  
If you mean the gear box, yes and if its from a stage 2 SM the shift lever on top of gear box will be the same as a 450. Some companys sold rebuilt T/A for 450 without the belt drive gear as replacements at cheaper price,so that could be a problem if T/A in tractor is replaced with one of those.



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Wardner

09-19-2006 16:59:32




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 Re: super m----450 in reply to D Slater, 09-19-2006 16:40:15  
My understanding is that the belt pulley gear box drives off the upper constant mesh gear. I can't see how a rebuilder could delete that. The tractor would have only two speeds; fifth high and low.

That gear from the first M to the last 660 has 39 teeth. The belt pulley gearbox will fit all.



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D Slater

09-19-2006 17:41:42




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 Re: super m----450 in reply to Wardner, 09-19-2006 16:59:32  
The gear that drives belt pulley gear box is located on transmission input shaft just in front of gear on input shaft that drives constant mesh gear. On some shafts the belt drive gear is just elemanated since thats all it drives and may not be needed. More common to find it elemanated on 300 460 etc. because the utilitys didn't use. IH sold input shafts for 450 560 etc. without pulley drive gear on them also. Have worked on T/A with no pulley drive gear and IH part # on shaft. He probably has gear,just pointing out possibilities. Also even though all boxes will bolt on there's slight differances in housing shapes and operating levers.

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Wardner

09-19-2006 18:10:05




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 Re: super m----450 in reply to D Slater, 09-19-2006 17:41:42  
There are only two gears on either the TA output for tractors so equipped or on the input of the five speed without TA tranny. One gear gets covered by the sliding fourth and fifth gear and the other gear is the constant mesh. The sliding gear in the belt pully gearbox can only mesh with the constant mesh gear.

On the other hand maybe there is something wrong with all my parts books. Why don't you take a look at either TC46, TC55, or TC76?

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D Slater

09-19-2006 18:37:23




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 Re: super m----450 in reply to Wardner, 09-19-2006 18:10:05  
From rear of inputshaft forward.You have shorter and wider teeth rounded on end that 4 and 5 slider locks on for fifth. Next is gear that drives constant mesh then belt drive gear.Same # of teeth on 5 lock up and constant mesh drive gear but different spots.I don't have a parts book that shows what I call big drive gear with mechanical T/A without belt drive gear. Think IH may have used in some later tractors but I don't know much past 560. Have found some in 560 but don't know if came that way.

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Wardner

09-19-2006 19:15:00




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 Re: super m----450 in reply to D Slater, 09-19-2006 18:37:23  
OK, I am learning a few things here. I went out to the barn where I have an H apart. Yes, the wide gear that is partially covered by the 4th-5th slider is also the upper constant mesh gear. The big gear, which I assumed was the constant mesh gear, is the belt pully drive gear and thats the one with 39 teeth. So I wasn't all wrong. I knew that gear drove the BP gear box and I was able to confirm, with the parts books, that all same sized tractors have a 39 tooth driving gear.

I looked at a 460 book and noticed the input shaft has an alternate input shaft without the big belt pulley gear. The 560 book doesn't show it.

Thanks for staying with this thread.

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randy hall

09-19-2006 20:26:28




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 Re: super m----450 in reply to Wardner, 09-19-2006 19:15:00  
the moral of the story is don't argue with dave slater on m's thru 450's he knows more details and parts than anyone i have ever known.



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