View Full Version : Trailer hub is missing the cap and oil/grease is everywhere

07-24-2016, 09:31 PM
Obviously this isn't right. Not sure what happened. If one of you can let me know what I need to do to fix this, it'd be appreciated.

I have the Vault maintenance free hubs:

one is missing a cap and grease is all over.



07-24-2016, 09:32 PM
I definitely lost the cap.

I have no idea how it happened though.


07-24-2016, 09:40 PM
That grease gets hot and creates more pressure and pushes them out. Go get a new cap (bearing buddy). And then pull your bearings out and repack them. You could probably get away with putting the new cap on and pumping it up with a few squirts from a grease gun. But if it was mine I would actually pack them and put them back in. Then install the new cap and put a couple pumps in it and it should be good

07-24-2016, 10:24 PM
No idea how long I've been rolling with them like this, as we just finished a road trip. It could be 8 hours or 8 minutes. No way to know.

07-24-2016, 10:49 PM
You lost the waterproof integrity of the cover and it was susceptible to dirt intrusion without the cover. Bearings need to checked and repacked periodically so this would be a good time to do that.