CAT Engine Model

Hello All-
Below...I hope are photos of a CAT engine in an American Ohio Crane. Can anyone look them over and see if you can tell what mode engine this 6 cylinder is? I believe I found where the S/N should be, but cannot come up with anything yet-

Bernie


[attachment=66732]IMG_6099.JPG[/attachment][attachment=66733]IMG_6098.JPG[/attachment][attachment=66735]IMG_6096.JPG[/attachment][attachment=66736]IMG_6095.JPG[/attachment] [attachment=66732]IMG_6099.JPG[/attachment][attachment=66733]IMG_6098.JPG[/attachment][attachment=66735]IMG_6096.JPG[/attachment][attachment=66736]IMG_6095.JPG[/attachment]

Looks like a 3306 turbo charged and after cooled Industrial Engine.

Thanks OM-As info, this is the machine it is currently sitting in. 

[attachment=66737]IMG_6100.JPG[/attachment]

I'd guess an early pre-com 64Zxxxx engine. No starter so maybe using back feed to the generator for starting.