Chevrolet C 3500 Truck 2WD V8-454 74L (1990) Ball Joint Component Information
b. Use a 4.763 mm (3/16-inch) drill to cut a 6.35 mm (1/4 inch) deep hole in center of each rivet (Figure 4).
Figure 5
c. Drill rivet heads away using a 12.7 mm (1/2-inch) drill (Figure 5).
Figure 6
d. Punch rivets out using a punch (Figure 6).