Rear end clunk, rebuild?

[Aedude006]

Started noticing a whining from the rear end, axle shaft bearings are clearly bad as there is play. Went to change bearings and I think I found the source of my clunk on acceleration. Do I need a complete rebuild? Or think I can replace the bearings and be good to go?

December 21, 2023

youtu.be

 

[Aedude006]

Fluid is only a year old. It's very shiny...

 

[18CrewDually]

Can't tell without pulling the carrier and pinion gear to inspect the bearings. Looks like water intrusion. So the bearings could have pitting and/or disintegration. Being that far tore down I'd definitely replace the axle and pinion seals. Bearings replaced based on inspection.