Dale please recall my sad experiance when the seal was replaced by a DD repair shop and the bearing was put back in dry of any lubricant. In ten miles it seized uo , broke the axel and required a major repair by the axel surgeons. The bearing only receives it's lubrication from the differential and if assembled dry without pre-lubbing or tilting the bus prior to hitting the road will be disaster. There was a previous post describing sequence of assembly and tightening the bearing nut, it will be helpful to review. Lew had a similar experiance to mine and I hear it's all too common. Good Luck
Harry
Shirley & Harry / 2000 Liberty / 2008 GMC Envoy Denali