Chevrolet 1991 Light Duty Truck Repair Manual page 220

4C1*4 8 1/2-INCH RING GEAR FRONT AXLE
Figure 6—Pinion Flange Removal
Figure 7—Removing the Drive Pinion
F4692
Figure A — Checking Pinion Bearing Preload
Figure 8—Removing Drive Pinion Rear Bearing
18. Bearing cups (5) and (39) from the axle housing
using a hammer and a punch.
• Work the cups out of the housing evenly, mov­
Figure 5—Pinion Flange Nut Removal
ing the punch back and forth between one side
of the cup and the other.
19. Axle seals.