TM  10-3930-638-24&P 4-4.   TRANSMISSION   MAINTENANCE   (cont) a. Torque Converter Group (cont). STEP LOCATION ITEM ACTION REMARKS DISASSEMBLY 1 Front of trans- mission a. b. c. d. e. f. 10 screws and lock washers  (1) Backing  ring  (2) Two drive plates (3) Drive plate assem- bly  (4) Retaining  ring  (5) Bore plug (6) and O-ring (7) Remove Remove Remove Remove Remove Remove Use two small screwdrivers as shown to remove bore plug g. Turbine retaining ring (8) Remove Remove through bore plug hole as shown h. 18 screws and lock washers (9) Remove 4-136   Change   1