47 Cub is now coming together!

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AHS
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47 Cub is now coming together!

Postby AHS » Tue Jul 06, 2021 5:33 am

Ok, the carb had two different bolts…. What is the stock size? (1/4-20 1 1/4”)? The carb is all rebuilt. The magneto is all rebuilt. Now just have to do the gov seal. Thank you all for the help! :hattip:

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Don McCombs
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Re: 47 Cub is now coming together!

Postby Don McCombs » Tue Jul 06, 2021 6:19 am

Actually, the carb was originally attached with studs. But, many times the threads in the carb flange were stripped out and the studs were replaced with a bolt and nut.
http://www.tmtractor.com/new/fl/405fp.htm
Last edited by Don McCombs on Tue Jul 06, 2021 6:20 am, edited 1 time in total.
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Gary Dotson
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Re: 47 Cub is now coming together!

Postby Gary Dotson » Tue Jul 06, 2021 6:20 am

If you’re referring to the ones that secure the carb to the manifold, they are supposed to be studs that are screwed into the carb flange. If the threads are gone, the holes can be helicoiled. The studs are 1/4-20 on the carb end, 1/4-28 on the nut end, about an inch long.

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Stanton
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Re: 47 Cub is now coming together!

Postby Stanton » Tue Jul 06, 2021 6:38 am

Helpful info in the How To Forum on governor-to-mag seal installation: http://farmallcub.com/phpBB2/viewtopic.php?f=144&t=94808&p=747219&hilit=seal#p747219

The critical dimension is the 22/32" depth that the front of the seal must be inset from the face of the engine block (where the mag mounts).

Taken from page 32 of the Blue Ribbon Service Engine manual GSS-1007:
Oil Seal Depth.JPG
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Re: 47 Cub is now coming together!

Postby SamsFarm » Tue Jul 06, 2021 8:15 am

Stanton wrote:
The critical dimension is the 22/32"


You mean 23/32, like in the pic, right?
1968 Cub Fast-Hitch

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Stanton
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Re: 47 Cub is now coming together!

Postby Stanton » Tue Jul 06, 2021 3:14 pm

SamsFarm wrote:
Stanton wrote:
The critical dimension is the 22/32"


You mean 23/32, like in the pic, right?


Yes, correct.
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AHS
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Re: 47 Cub is now coming together!

Postby AHS » Tue Jul 06, 2021 5:51 pm

Order #6 from TM tractor! What is that blue ribbon book? Cub manual?

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Glen
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Re: 47 Cub is now coming together!

Postby Glen » Tue Jul 06, 2021 6:23 pm

Hi,
Below is the Cub service manual, it has lots of info, this is one of the newest service manuals IH made for the Cub, it was made in the 1970's.
There is a contents beginning on page 1 of most sections.
The info about the magneto drive oil seal is in section 2, the fuel section. :)

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


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