Jim, before I learned how to adjust the brakes I had an interesting trip back up my mountain... steering in one direction only. You saw the photo of the rocks I dealt with in the previous crawler thread?
Pretty hard to go wrong at that price, I got 4x that much for a well-worn machine. Then they paid $17k for its trip to Peru. Part of my reason for selling, other than preferring rubbertire, is that there are a pair of real interesting bearings in the transmission that you don't want to know anything about. Timken offered to make a pair for me, custom, someday. Mine suddenly looked great!
Good luck with it. Make sure you get repair and parts manuals, for that serial number machine. If you have a scan from the parts book about that pin it might jog my memory.