Hopefully someone has been through this headache!
Last fall when I replaced those rotten backing plates on my F250, I researched the parts I would need. There is a lot of confusion and debate about these axle seals (technically it is a hub seal since it is a floating axle). Based on consensus on several truck forums, I settled on a National Seal (370247A). This is a one piece seal. I can't say for certain if the factory was originally a one piece seal. It definitely came apart in two pieces. Everything was perfectly dry when I took it apart. I put everything together and it seemed to be Ok. Then, last month I went to adjust the parking brakes only to find that they were wet. The driver side was worse, but they both had some oil on them. So, I went to Ford this time and they spec'd a part based on my VIN. This is a job 3 2008, so I am always aware that it may be more like an 09 than an 08. He sold me BRS-179s. I also bought no e-brake shoes rather than trying to wash off the old ones. I put everything back together and drove it. Now, 3 weeks later I have a PUDDLE of oil on the floor. It is the driver's side leaking. Passenger side appears to be dry. But this thing is leaking BAD now. The first thing I checked was to see if the axle nut backed off or maybe I never seated it well. Everything feels good with the tire in the air. So, now I am back to wondering about this elusive 2-piece seal. The Fordparts website calls for a BRS-116 (for both a generic 08 F250 and my VIN. But also shows none in stock locally. It is not clear in the drawing that it is a 2 piece seal, but I suspect it may be. It also says that it is superseded by another part but I can't get that part to come up. Full part # for the BRS 116 is 1175 (BRS-116). It says it is supersed by 1177. But a search on their site for an 1177 goes back to the BRS-116. Fun, eh? Oh, and some of the research I am doing is saying that the 116 was replaced by a BRS-180. So, what did this guy sell me? WTH?
The best part is that I am towing my 5th wheel 800 miles next week. I need this fixed and I have to have some level of confidence in it.
If anyone has any history with this challenge, please let me know. Meanwhile, I am going outside to tear it apart. Either way I am replacing that seal!