D7 3T tracks

I am in search of tracks for a 1952 Cat D7 3T, my chain (rails) are worn bad if any one can help or knows of a machine for parts please advise thanks.

Try the search feature (upper right corner) for D7 17a one of the threads shown will be by Dieselholic92 in 2016 and has info about the interchange with Komatsu tracks for the D7 17A. The 3T and 17A tracks are the same.
Craig

Be sure to check the parts books before buying used tracks. Although the 3T and 17a tracks have the same pitch, I believe the 17A uses one more link per side. So if you are going backwards in age, you need to also source an extra master link or have a track shop add another link.