April 3, 2018

F250 4 by4 rebuilt front axle last july. All seals and new hub assy. All OEM parts. Growling sound after a few hundred mile. Removed Hub assy to find overheat purple/blue marks on interior of hub. assuming that is from bearing over heat. Went to local dealer for warranty replacement. The new hub assy they are selling me have the same , yet smaller, overheat marks. They tell me that is normal factory assembly appearance. this does not seem correct. Do new parts come with overheating scars? My original hubs from 1999 do not have these overheat marks. Has anyone else purchased new hubs with this overheat marks?
front hub