TM 9-2520-246-34-1 f. Front Output Case Assembly (Model T-136-21). FRAME 1 1. Working from front of front output shaft case (1), tap out shifter shaft (2) and take off clutch collar (3). 2. Take off safety wire (4). 3. Take out setscrew (5) and take shifter fork (6) off shifter shaft (2). 4. Take out speedometer adapter (7). GO TO FRAME 2 2-148