Up for bid is this nice used Plymouth Hy-Drive transmission service manual. This 18 page 1953 manual covers all Plymouth models equipped with this type trans. I assume it will work with other year Mopars as well. It is complete with no missing or loose pages and in good used condition. It covers everything associated with the Hy-Drive tranny including service and diagnosis procedures, operating principles, lubrication, maintenance and specifications. Reprints are ok but exactly just that reprints. Nothing like real original literature and it can also be used as part of your show display. Please see my other NOS and used Mopar items.