Ring Gear

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Jon E Arvesen
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Ring Gear

Postby Jon E Arvesen » Sun May 14, 2006 9:57 am

Would anyone know the difference between ring gear with the part number251270R2 and the ring gear with the part number251270R1? I looked in the IH parts manual and it called for R2. I have R1 I have a 1949 cub. :?:

Donny M
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Postby Donny M » Sun May 14, 2006 10:11 am

Not sure about the difference but the gear should be backward compatible.
The difference could be the number of teeth. The R2 has 84. See if you can count the teeth on the R1 version. If it's still on the tractor it might be a trick :lol:
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Rick Prentice
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Postby Rick Prentice » Sun May 14, 2006 11:00 am

I must be missing some information. I looked on the Support Pro disc and they have a part number of 350787R1 and say it's a 46 tooth :shock:


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When I told my dad I've been misplacing things and doing stupid stuff----His reply---"It only gets better"

Donny M
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Postby Donny M » Sun May 14, 2006 11:03 am

Rick,

P/N 251 270 R2 is the ring gear on the flywheel, not the differential. I had the same problem :lol:
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Rick Prentice
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Postby Rick Prentice » Sun May 14, 2006 11:19 am

That explains it. OK, I went out to the barn and checked, because I had a flywheel left over from when I did "Harley". It was the R1 part number and has 84 teeth, too

Rick
When I told my dad I've been misplacing things and doing stupid stuff----His reply---"It only gets better"

Jon E Arvesen
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Ring Gear

Postby Jon E Arvesen » Sun May 14, 2006 11:20 am

The 251270R1 has 84 teeth. I may have been premature in asking this question and ordering 251270R2. I bought the ring last week and have not recieved the the ring yet.So I cannot compare the two.Yesterday I pulled the the old flywheel off that's when I notice the difference.I should recieve the ring this week and than I can compare the two.I just went off the parts manaul when I order it.

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Postby Jim Becker » Sun May 14, 2006 11:39 am

Difference will be minor. They may have done something like change the bevel on the front edge of the teeth. You may not even be able to see the difference.

Jon E Arvesen
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ring gear

Postby Jon E Arvesen » Sat May 20, 2006 5:26 pm

I was able to compare the two ring gears side by side. The difference between 251270R1and 251270R2 is that R1 has a bevel or more of a groove between the teeth I assume so the bendix can easily slide in between. I have read some of the other messages on the forum and they talk about using a Dremel or grinder to bevel the gear. sould I consider using this gear or look for the correct gear?

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Bigdog
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Postby Bigdog » Sat May 20, 2006 6:13 pm

Jon - you can use it with no problem.
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John *.?-!.* cub owner
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Postby John *.?-!.* cub owner » Sat May 20, 2006 6:51 pm

I have used a Dremel or grinder to repair the teeht on damaged rign gears. But the oen you are considering should work.
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