Call Chad he has many parts for all sizes of Caterpillars.
http://www.antiquecrawlerparts.com/page/page/8916791.htm
I will check and see . I think I may have the 602 bearing assembly parts. My E-mail is in my profile. I have lots of 10 parts. I know for sure I have 2 complete idler assemblies. - Wally
I have a used backplate also.
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