The CPE-2 manual is a parts book. It won't cover disassembly and repair.
I am not aware of an attachment repair manual.
Lew probably has one.
Pretty simple machines.
Yes, bearings that have never been removed for 50 years tend to get stuck. Welcome to "Basic bearing removal 101". Use a penetrating oil before disassembly. I just cut the bearings off with a torch. Takes 15 seconds.
On assembly, a little emery cloth on the shaft makes the new bearing slide right on. A little anti-seize on the shaft makes removal next time easier.