John Deere 450c dozer

I'm looking to buy a John Deere 450c dozer. My questions are mainly about tracks but I'll listen to any input. The owner claimed the dozer was sitting on a pile of poop for many years and the tracks are rusted to that shape. Looking at the tracks they are stiff. He claims that you can do allot of damage if not fixed. Is that something I can do? If I have to take them in he said it will cost about a grand to have the pins pushed out and fixed. Can I just try and soak them in diesel to loosen them up? What do you suppose something like this is worth. It looks to be in good shape. Owner claimed it's got new drive sprockets.

I have heard that diesel fuel and a BFH works. lol. I know of someone that discarded their tracks from a 450 JD loader because the pins and bushing were seized and bought all new rails and pads without even trying loosen the existing tracks. He simply torched through a link and scraped them. I saw them and compared to his new rails and the old rails, pins and bushings looked 100% with no signs of wear at all. I expect that they are still there so if someone in the Pacific NW or in western Canada needs next new tracks they can probably be had for scrape metal price. The pads were a little beat up as if they had been used in a rock quarry. Two new links would be required to replace the two that were cut with a torch.

Thank you guys. It brought a bit more then I was willing to spend. It brought $9750. To me that was a bit much for something that had sat that long. Plus after looking it over a bit more the oil felt very gritty. Hydraulic oil was a nice cream color. To much made me nervous. I'll keep looking though for something of that size

there's a (PfffffT) deere on big iron auction if you think you want that (PffffT) brand...