Other information:
Check
With the vehicle in NEUTRAL, position it on a hoist.
Refer to: Jacking and Lifting - Overview (100-02 Jacking and Lifting, Description and Operation).
Remove and discard the RDU fluid fill plug.
If fluid level is low, check and top off the RDU with clean RDU fluid...
Inspection
Cratering - fatigue failure
Spot glazing - incorrect seating
Scratching - dirty engine oil
Base exposed - poor lubrication
Both edges worn - journal damaged
One edge worn - journal tapered or bearing not seated
..