Well I guess tearing down a 42 year old machine will have it's discoveries. I found a piece of cardboard lying underneath the exiter armature, though I'm speculating the factory put it there as it has the same reddish paint that's on the windings
The thing I'm not happy with, is the welds I found on the armature shaft near the retainer nut threads. I'm assuming that the exciter armature bore must be worn and sloppy - there appears to be a few scuffs on one of the exciter coils. Wondering if there is a bushing insert I can use or if I need to replace the armature?
The armature shaft bearing is also starting to throw grease, so I'm guessing its time to change it while the machine is apart (?)
apologies if I dont have the correct terminology for these parts...and for my crappy phone pics