AT-100 AUTOMATIC TRANSMISSION — Component Parts (Second Brake) Second Brake COMPONENTS Snap Ring Disc Flange Plate Piston Sleeve Second Brake Drum Piston Return Spring Spring Retainer Snap Ring Thrust Washer O-Ring Second Brake Piston ♦ Non-reusable part A53383 DISASSEMBLY OF SECOND BRAKE 1. REMOVE THRUST WASHER FROM SECOND BRAKE DRUM D4868 2. CHECK SECOND BRAKE PISTON MOVING Make sure the second brake piston moves smoothly when applying and releasing low pressure compressed air to the second brake drum. D4863