Can someone help me with obtaining the correct procedure for reinstallation of the rear wheel hub on a 1981 R-Model with the standard rear end housing. Information needed especially in relation to bearing preload, axle nut torque, etc.? We had some issues with rear wheel studs, which involved removal of the entire hub assembly. After replacing studs and reinstalling the hub, we were rolling along, only to be shutdown on the side of road with hub coming off. It appears that bearings came apart or axle nut backed off allowing hub to seperate from the axle housing. We have done this procedure several times before when changing brake shoes and not had issues. Thought that maybe we had missed some important step, (such as loctite on nuts, etc) and want to get it right this time so as not to have a repeat failure. Thanks for any input.