Tighten the bearing adjusting ring until there is no end play with the differential.
Adjust the preload on the differential bearings.
Used Bearings:
1 N•m (9 lb-in) required to rotate the differential one revolution per second.
New Bearings:
2 N•m (18 lb-in) required to rotate the differential one revolution per second.
Tighten or loosen the bearing ring adjuster to get the required preload on the bearings.