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broken gear tooth in transmission

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1948cubnovice
Posts: 42
Joined: Sat Oct 02, 2021 10:10 pm
Zip Code: 38469
Tractors Owned: 1948 farmall cub
1948 farmall cub
Allis Chalmers c

broken gear tooth in transmission

Postby 1948cubnovice » Fri Nov 05, 2021 11:54 am

i was looking for that slapping noise in second gear and have a broke tooth on the gear. Is it possible this is the cause of the noise and if so, how hard will it be to replace it?

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outdoors4evr
10+ Years
10+ Years
Posts: 2791
Joined: Tue Jul 22, 2008 12:44 pm
Zip Code: 48370
Tractors Owned: 184
Location: Oxford, MI

Re: broken gear tooth in transmission

Postby outdoors4evr » Fri Nov 05, 2021 2:27 pm

Sounds like you have found a source to the noise.
Hopefully others will chime in on the difficulty level.
184 w/ Creeper & 3-Point
IH 3160a Mower
IH Model 15 Tiller
IH-54 Blade

tst
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Posts: 5206
Joined: Tue Jan 12, 2010 2:08 pm
Zip Code: 12514
Circle of Safety: Y

Re: broken gear tooth in transmission

Postby tst » Fri Nov 05, 2021 3:20 pm

spilt tractor in rear, pull the imput shaft out and swap gear if it is the one on top that's broke, just so you know gears are better changed as a pair for noise issues

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Glen
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Posts: 6139
Joined: Mon Mar 19, 2012 7:33 pm
Zip Code: 00000
Tractors Owned: 1956 Farmall Cub with Fast Hitch, F-11 plow, Disc, Cultivator, Cub-22 mower
Circle of Safety: Y
Location: Wa.

Re: broken gear tooth in transmission

Postby Glen » Fri Nov 05, 2021 5:45 pm

Hi,
You didn't say if the broken tooth is on the gear on the top shaft, or the bottom shaft.
The Cub and LoBoy service manual has info about splitting the Cub, and repairing the transmission.
If you don't want to do bigger jobs, like splitting a Cub, you might need a shop to repair it.

Below is the Cub and LoBoy service manual, if you don't have it. It has lots of info.
There is a table of contents on page 1 of most sections, that makes it easier to use online.
Sections 4 and 6 have info that would probably help you with the repair.

http://farmallcub.com/rudi_cub/www.clea ... index.html

IH changed the numbers of teeth on the 2nd gears, upper and lower gears, in the mid 1950's, if you buy another gear, be sure it has the right number of teeth. :)


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