what is it worth? D4

Lets start at $1000. until we see some photos! Seems like every Cat I ever looked at was running good. (Last time it ran):jaw:

I just yesterday bought a 7u for $2000 that the main runs good on, the pony is stuck, has new tracks and rollers.

Tracks don't sag to me translates to they are worn so we run them tight to stay on.
Look at the pictures of painter's D4, they are loose. 600 miles round trip, I would start at $1000 to get a feel of what they are thinking in value.
my 2 cents

Another reason that the Cat tracks don't sag now may because the Cat had sat in the barn (shed?) for years. After sitting for years on a dirt floor and then being towed outside because it had lost its dry storage, the rusty tracks' slack may have been taken up by rust and dirt. After a few laps around the barn yard,🙄 the tracks may show slack again. Worn out sprockets will jump its teeth in the tracks if the tracks are not kept tight. Tight tracks will on good sprockets will hasten wear of both. A close up photo of the sprockets and rails will help indentify how much life is left in them. The life left in the undercarriage of an old Cat helps give you an idea of what the old Cat is worth. Unfortunately, when the undercarriage is totally worn out in an old Cat, its present scrap value can exceed its worth as a usable Cat.

thanks for all the input so far. i have been told that we are going to look at it tomorrow..............but that's what he said sat so we shall see, im taking my nice camera tomorrow to get lots of good pics for yall

bump with pics in OP

Before you start any Cat that has been sitting outside for years, pull all the drain plugs and drain off the water until oil starts coming out and then replug them. A machine that has been sitting for very long, has all of the water sitting on the botton and oil on the top. Once it is started, the oil will look like mayonase. Here in Northwest Washington State, water in the oil sumps is a real problem. Dry storage is the only real answer to limiting the rain water from entering while in long term storage. You can turn the engine over by hand or tow the Cat briefly for loading, but beyond that, drain the water off the bottom first.

Wow, those are tight tracks. With any luck you won't have my problem - 2 broken recoil spring bolts

looks like its fresh off the lot.. lol