Information on my "New" Caterpillar Dozer - Please

Engine probably swapped. What does the tag on the back below the seat on the left say?

Engine probably swapped. What does the tag on the back below the seat on the left say?

Engine probably swapped. What does the tag on the back below the seat on the left say?

I can not find any tag on the transmission at all.
Top of transmission has 1F9139 in casting.
Gear Shift Housing shows 2F8626 in casting.

Hey William,

I agree it looks like a wide gauge tractor. It looks like a 7u. It has one steel fender not tin, and curved handles on the steering clutches, so not an early 7u. As jmvmopar stated, go to rear of tractor, left side up about 12-16" up from tow bar, closer to track you should see a serial plate. On later D4's they also started putting transmission group plates also. If the plates are missing, they stamped the serial in the case at this location also. I have a 7u with a 6u engine. The engines will interchange, so someone swapped out your engine at one time or another.
Glen

I will go up in the morning and find the number.
What blade is this ?

I appreciate all of your help !

Holt angle blade (good unit)

i think that is a Dakota blade

You are correct, that's what I was thinking but that's not what I wrote.