Hi Gene, thank you for your advice on the cleaning of this piece. You can rest assured that I would NEVER under any circumstances use any motorized tool in the cleaning of any of my pieces.
To answer your question, yes the tang can be seen where the hilt is cracked.
After thinking about it I have decided to leave the hilt wrapping as is. I don't think that it could be done properly with out removing the fittings which would require grinding the riveted end of the tang to remove of the pommel. I will try to clean the remaining paint and some of the rust from the joints and crevasses of the hilt. Thank you again for all your help.