A couple guys who I've been friends with for many years have me doing ongoing work on their places, very rural area. Their uncle is recently retired and has his ranch up for sale. It's the best laid out place I've ever seen, and his equipment is older but extremely well kept. Amongst all of it is this old girl - 1947 Cat D7-3T, he thought 100 hp, cable blade, bought new by the Northern Pacific railroad in '47 to do train derailment cleanups. Spent the first part of it's life doing that, maintained by a buddy of his who worked in the Livingston MT shops for NP and later Burlington Northern. At some point they fabricated a cab to keep the winter at least a little warded off. The undercarriage and tracks, possibly a few other things, were replaced in 1985 when he bought it. Minimal hours from '85 to now, a little roadwork and developing a small pit on the ranch. Come fall it was always winterized, and parked up on timbers, blade and tractor. Pony and main motors run strong. Cable looks to me like it could use replacing, but I've not been around cable machines so I don't really know if a fray or two is time to panic.
Phone pics don't really do this dozer justice; it's got a couple very minor leaks, obviously the paint is weather-worn, but it's darn near a museum piece with a complete history. I wasn't aware of the hour meter location when I was out there last summer, but have at least a week or two again this year so I'm going to look. I'm hoping to catch up with the guy and see if he'll show me the ropes and let me do a little topsoil removal for a 1/4 mile of road that needs put in. I have a little time on an old D8 in the past, so I figure I should be at least able to point this thing straight and curl some soil.
One thing that lends credence to the story - there are several old railroad tank cars with the ends cut out acting as large culverts on his property, which leads me to believe he siphoned off a wreck or two through his buddy at the shop. There are also some odds and ends for old signals and some other RR-looking stuff around the place, probably from the BN scrap pile.
He's wanting to sell it, too big for my little operation, but I hope someone snags it who'll give it a good home. Just seems like a great piece of old iron, and I think a guy would be hard pressed to ever find one this age in this kind of shape.