Here is my 1937 Farmall F30 with an IHC #20 mounted picker. The picker is pretty worn, all of the chains are rusted solid and most of the sprockets are beyond worn out. But there does not seem to be very many of this picker around anymore. There is a restored picker like this on an F30 in Harold Warp's Pioneer Village in Minden Nebraska. I plan on rebuilding the mechanics of this picker at some point so that I can put it to use picking corn!
Looks like you got your work cut out with that one. Best of luck with it. Always glad to see old iron being saved instead of scrapped. Keep us posted with pictures and your progress; oh and welcome to the forum.
Welcome to the site. You will find a great deal of resources by flipping though old posts. A lot of folks on here have spare parts, and there are a few sources for NOS for certain brands. New chains can be purchased, as well, from farmchains.com and a few other sources on some old posts. You might have trouble finding the little tabs on the paddle links, but they can be cut off the old chain and welded onto new. Please post photos of your progress.
Thanks for the advice! I have not started working on this picker yet, but I have bought a bunch of new roller chain and some new sprockets to use when I rebuild the picker. I am currently working on rebuilding a 1935 F30 so I will have a running tractor to mount the picker on as it is slowly rebuilt. I am somewhat of a self-taught amateur machinist and have a 12x36 Atlas metal lathe along with a Bridgeport vertical milling machine so hopefully I will be able to rebuild most parts or make new ones if needed.