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REF: Service Procedures 9A
1965 XLCH Transmission Assembly
Article by scottericsonon of the XLForum 1)
A used transmission bought from Ebay was disassembled and the parts swapped over to the original trapdoor.
The used transmission had all Andrews gears as well as the mainshaft and countershaft.
I put new main and countershaft bearings in my trapdoor so I could reuse it so I know everything will line up with my case.