TM 9-2520-246-34-1 d. Front Output Case Assembly (Model T-136-27). FRAME 1 1. Bend 2. Take 3. Slide 4. Take 5. Take back ears on four key washers (1). out four capscrews (2). Take off air tube cover (3) and brass gasket (4). off air tube (5). off nut (6) and washer (7). Take off piston (8) and second washer (7). off brass gasket (9). GO TO FRAME 2 2-143