Originally Posted by RockwoodUL2604
I replaced them I did use the EZ lube system to fill the hubs. I pulled one of the drum/hub's after filling to make sure that the rear seal did not leak by and it was fine.
That is the ONLY way I would ever use them...pull the hub immediately after to make sure the seal didn't get blown. Personally, I pull the drums yearly to inspect my brakes and bearings anyway so no need to use the EZ-Lube system "feature".
I have 2 boat trailers. One has Bearing Buddys and the other has EZ-Lube. Only the EZ lube trailer had bearings get pitted due to water intrusion. Bearing buddy is the only way to go for a boat trailer. Obviously not needed for a travel trailer.
Personally, I think the grease leaking past your rear seal caused your issue. Once you get grease on the linings, they grab and can overheat your brakes. Had the same thing happen on a truck where the oil seal failed and allowed diff fluid on to the shoes. That caused the brakes to over heat.
I just replaced the cheap chinese bearings and seals on my trailer with USA made Timken to prevent the grease issue.