Hey, guys , something about dozers... a machine that age probably went through a lot.
What raises my eye brow is that dozer blade seems to be from a long track machine.... LGP´s wich are usually used in sand... that would explain the wear.
But who ever bought the tractor new, might have ordered it like that.
Track gousers seem to be a litle worn, probably tracks system too, that will be expensive.
9K hours .... also seem a litle low, but that matters litle, if it has a 3306 engine that last 30k so not a problem there, TXM is easy to reseal , as long as the charge pump is fine it will last a long time.
Beeing a diff steer has a litle more to it, but also easy to fix, bet yours has TXM controls with rods , its also bulet prof.
U have a nice tractor, will last a long time.
Good luck