I could possibly reuse the old roller bearing, it does not seem worn at all. I will of course clean and inspect it first.

The question regarding the axle shafts is because my book states " There is a difference in the lenght of the rear axle shafts. The longer shaft should be installed left side" But these shafts are equally long?

The 108 comment refers to the anchor plate (the plate where the hand brake shoes are mounted) left side has a 108 number. I guess this is just the new type made from pressed sheet metal. The older one is casted iron.

Regards,
Karsten