batreg,
<A target="_blank" HREF=http://www.tractordata.com/td/allischalmers.html>Click here</A> for info about Allis Chalmers. Allis Chalmers is now manufactured under the Agco Allis name. Parts can be found for the older A/C's usually pretty easy over the internet, and sometimes locally. I usta have a early 60's model D-12 gas and could get most my engine electric parts at most auto parts stores.The 5030 is a diesel so you probably will have to mail order most of the parts. Hope this helps.
P.S. Check out <A target="_blank" HREF=http://www.allischalmers.com>http://www.allischalmers.com</A> for the unofficial Allis Chalmers Discussion board.Thats where I hung out when I had my Allis.