Yes, there are suppliers of parts that advertise in our newsletter, just leaf thru it until you see Cletrac Orange. If you aren't a member I guess that would be pretty tough. You can join on this website, or pick up a copy at practically any Tractor Supply Co. store. You're gonna love working on that little crawler if you have had Cats, it is so much more user friendly. I had a 5T D-4, 1945, that thing was such a pain to work on that when my brother told me he would like to have a little crawler I jumped on the chance to give it to him free of charge, even hauled it to him, 150 miles away, free also. Now he has it, he thinks completely disassembling is a normal thing, even when doing the most minor of repairs. I'm not telling him any difference, that way I won't wake up one morning to find the durned thing in my yard.
Take care!!
Andy