What year/sn range is this d7?

Hey Thomas,

It looks like a D7 3t to me. They were built from 1944 to 1955 if I'm correct. The 4t was an Army version and the 6t was a Navy version. The information plate with weights and sizes were used by the government. So that leads me to believe it maybe a 4t or 6t. Hope this helps...
Glen

Most likely a 4T built 1944-45.

Thank you for the responses!!!

3T I reckon, I believe the military 4T had H section chassis side rails.

By parts book
7M5054-up, 3T1-2547, 4T1-up all use the same case and frame number 2F45
3T2548-up case and frame number changes to 3F4084.

It's definitely a drive clutch. by the tag on the side I would say it is a 4T military with a cargo winch

Except that's a Isaacson winch not a Carco.

As cat silver says no H section chassis and the mud guards ( fenders for you blokes ) are pressed tin
I have seen chassis with the complete H section chassis and they are stamped 7M

Also looks like the crank handle for the pilot motor was once out the side not always thru the top what attachment needed it thru the side I wonder

Looks like a old 3 T to me
Also have been told that a 4 T wasnt built buy Cat but was out sourced back in the day the 3T was a Army machine in the Pacific dunno about this other stuff have never heard of it being a 4 T Army machine maybe that was only the US Army only thing
So much none of will never know now as most of us werent around back then or if we were we werent old enough or in a position to know

Paul

Dont want to rain on your parade Paulie my dear, but I feel definitely a 4T. now fitted with a front mounted PCU.
But originally fitted with LeTournau over head gear and most likely a rear mounted DDPCU.

Andrew K..