Need Help Identifying Dozer

That serial number identifies your machine as a Caterpillar D7D manufactured in Peoria, IL in 1961. The number is for the whole machine. John

The engine serial number should be the same as the one on the left rear of the steering clutch housing. Machines of that time had 2 tags with matching numbers. If different numbers, the engine was replaced.

Later models (after early '70's??) had a separate serial number for the engine, but tractor serial number was still tagged on left rear of tractor (and stamped under tag...... if it's missing scrape paint off between the two rivet holes to see number).

I can not find the serial number of my dozer. Where on engine is it located? It has a winch on the back and I can not see back there, but I am pretty sure the plate is missing

It should be on the left side of the engine near the pony motor engagement levers.

Here you go.

[attachment=42875]SN-Location - D7.jpg[/attachment]

Thanks. Those are the locations Iam looking for

Hi, I just acquired a D7 cat. The problem is I have no idea of the year or model. Could someone please help me decipher this number.

D73T20651

Thanks in advance.