Farmall F-12 belt pulley

DaveF12

New User
I have a Farmall F-12 with no belt pulley. The shaft that drives the pulley is 1 1/4" OD and keyed. I bought a pulley 2942DA but the center hole has an OD of 1 1/2", is not keyed, and seems to be threaded. Did some of the tractors have a 1.5 inch shaft or were they all 1.25 and this one has been modified?
 
Sounds like the pulley has been modified.
Correct pulley is 2942 DA 12 3/8" diameter with 6¼" face
or
3727D 10" diameter with 6¼" face (Special).

Both are keyed. Correct key is a Number 18 woodruff.

Correct bolt for pulley is 5/8 x 3½" UNC

SadFarmall
 
Here is a picture of the pulley. It is cast 2942-DA and measures 12 3/8" diameter with 6 1/4" face. I was going to sleeve it back to 1 1/4 but wanted to make sure it was not original for something else.

7628.jpg
 
I think the other guys are right it was modified to fit something else. But it is the correct pulley for F-12 F-14
 
That is the right pulley for an F12. It has been 'drilled' out. You can see the drill marks,and the absence of a keyway.
 
Thanks for all the replies. I will sleeve it back to 1.25, hopefully whoever drilled it kept it straight.
 

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