To Pick Out Trailer Hub Bearings Does the Hub Have to Be Totally Disassembled  

This is what I know: I have a home-built utility trailer with Hadco axles and Warner electric brakes. The bolt pattern is 6x5.5 and the dust caps are unusual in that they are threaded and hexagonal. The outer bearing is a Bower 1779 and the seal is a National though I didnt see a part # or pull it to measureI didnt want to make the trailer an immovable lump in my front yard just yet. I did pull and repack all the outer bearings, add some grease to the inners from the back and check for missing parts, discoloration, play, etc.. I found one outer bearing obviously on its way out blued around outside edges of rollers, excessive play in cage, lightly seized to hub and difficult to remove and one grease seal on a different hub that clearly is making a small mess, though the bearings look fine.. Heres what I could use some help with: My research seems to indicate that these axles came from a late 50s Airstream ! and if so, another expert answer from Bob G references additional part numbers #1729 for the outer bearing race, and #2788 bearing and #2729 race for the inner and #29031 for the Redline seal that would go with a 22834 hub. The dustcaps he references, # RG04-060, dont match however. Im trying to decide whether to get a #29031 seal based on the parts list in the other answer, and decide what parts I need in addition to that seal and the 1779 bearingIs it a safe bet that the part numbers referenced in the other answer are correct for my application? I can pull a seal at some point, but I may need to tow it back to its storage spot for a while first. Also, should I replace the inner bearing and race on the hub with the bad outer bearing as a matter of course? I was not expecting it to be that hard to track down the parts I will need so I didnt take pictures, but I certainly will next time!

asked by: Seth