TM 9-2320-209-20-3-4 FRAME 3 1. 2. 3. END Working under truck, using needle nose pliers, pull out cotter pin (1) from shaft nut (2). Throw away cotter pin. Hold 2 x 4 x 15 1/2-inch wood block (3) between teeth of sprocket (4) and truck frame. Using 3/4-inch ratchet, short extension, and 1 1/2-inch socket, unscrew and take off shaft nut (2). Using puller, take off sprocket (4). NOTE Do not lose key in sprocket shaft. OF TASK TA 080919 19-36