Gege Blog 9.1 Dynamo Engine A (f).PDF
The parts in order
I take the measurements for the bearings, 25x52x15 on the block side (so it's a 6205, we'll put a 6205-2RSH waterproof), and
15x42x13 on the brush side (so a 6302-2RSH waterproof).
The straps closing the holes to the brushes (dynamo and starter)