D9G ser#66a3445

9C Bulldozer Attachment , 
https://www.jensales.com/categories/caterpillar/9c.html

I don't see the g series listed on this book.

I don't see the g series listed on this book.

D9 66a3445 BUILT 1965 ? , The 2 serial number for 9C cushion blade ,70F start 1960 , 45G start 1971 , ,, 70F would be closet to your tractor ?
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Caterpillar 9C Bulldozer Attachment Parts Manual (S/N 70F1+) (jensales.com)
 

Hi, durtrivertruckingcompany. (Heck, I got writer's cramp just from typing that name.)
There will very likely be mounting facilities on each side of the hard nose to carry the beam with the ram mountings that goes with the angle and straight blades. This is a round beam that mounts on both sides of the back edge of the hard nose and contains the swivels for the ram mountings in each end.

This arrangement was also used on many of the cushion push blades.

I don't have the extensive libraries of parts books, etc., that some other member have and so I can't post a scan of the parts page.

Hope this helps.

Just my 0.02.

Thank you sir!

Hi, durtrivertruckingcompany (more typist's cramp.)
Maybe a video will help:

https://www.youtube.com/shorts/xVEzI0vPq8g

https://www.youtube.com/watch?v=o-zjDLKmHQw

Just my 0.02.

There is nothing comparable between the 9C cushion blade and regular straight or angle blade arrangements.
Look into Parts Manual Form  #UE070070