Huntindog wrote:
True, grease seals can just fail... But it happens a lot more often when using the EZlube feature.
YEP, which is why I posted the video, which has some photos in it of the mess I encountered on another trailer.
When I bought the trailer with the failed seals, I asked the owner if he'd ever repacked the bearings. He'd owned the trailer for 4 years.
He said he never repacked them, but always pumped more grease in them periodically. That raised a big warning flag, which went full mast (to the top of the flag pole) when I manually activated the brakes as I was leaving his driveway, and got ZERO braking action until I turn the ITBC up to 9. At max setting, there was braking action, but very little.
When I pulled the hubs apart at home, all 4 of them were caked with grease from seals that had blown probably 2+ years ago.
When pumping grease in using the zerk, it's very easy for the grease to take the path of least resistance since the hole sits mostly behind the inner bearing.... so the grease blows out the rear seal in a heartbeat. I think the second video I posted shows that.