How to replace rear axle bearkings

carmieandjason see if this will help you out:"

Removal (With Rear Drum Brakes)

1. On vehicles with air suspension, turn air suspension switch to OFF position. On all vehicles, raise and

support vehicle. Remove wheel assemblies. Remove differential housing cover, and drain lubricant. Remove brake drum.

2. Remove and discard differential pinion shaft lock bolt. Remove pinion shaft. See Fig. 2 . Push axle shaft inward and remove "C" locks. Remove axle shaft, being careful not to cut axle seal. Using a Axle Wheel Bearing Puller (T83T-1225-A) and Slide Hammer (T50T-100-A), remove bearing and oil seal as a unit.

Here is a great guide.