This is an excellent reproduction of the 2 page data sheet you need! It covers installation, operation and includes a parts diagram with part numbers.
Ammco 6900 Twin Cutting Head for Brake Lathe Cutter
AMMCO 6900 TWIN CUTTING HEAD FOR BRAKE LATHE DUAL CUTTER NEW
Ammco 7900 Twin Disc Cutter Installation Operation & Parts Diagrams Manual
Ammco 6950 Twin Disc Cutter Installation Operation & Parts Manual Data Sheet
(2) Ammco 6929 Spring Washers for 6900 and 6950 Twin Disc Cutter for Brake Lathe