TM 9-2320-209-10-4 b. Replacement. FRAME 1 1. 2. 3. 4. WARNING Never use rivets, bolts, steel pins, or any other type of metal pin in place of shear pin (1). Make sure you use the correct part number aluminum shear pin only. Damage to the equipment and injury to personnel can happen if wrong shear pin is used. Spread small amount of grease on shear pin (1). Put and hold shear pin (1) in hole in drive sprocket hub (2). Turn sprocket (3) until shear pin (1) slides all the way in. Using pliers, put cotter pin (4) through hole in shear pin (1) and bend open ends of cotter pin. END OF TASK 2-40