SpeakEasy wrote:
Have a look at this video . It is the Dexter "official" procedure for re-packing wheel bearings. Note the E-Z Lube zerk fitting in the video. Dexter themselves are demonstrating their official disregard for the E-Z Lube feature by basically acting as if it doesn't exist.
-Speak
That video starts out stating "standard bearings". Why would a manufacturer produce a video that goes against a feature they designed, patented, and promote? Perhaps when they produced a video to show how to hand pack bearings the trailer with the ez lube feature was the most convenient to use? Perhaps they think their ez lube system is junk lol. Funny how they also produce this
VIDEO. This one starts out showing a boat backing down a ramp into the water but then goes on to show how to use the ez lube feature on a boxed equipment trailer. You can read into that however you want.
I have used Dexters EZ lube, or have hand packed if I was pulling drums for other reasons, or a combination of both on many trailers without issues or blowing seals / contaminating brakes. That's 4 RV trailers since 2009, and so many box equipment trailers over the years from 8' to 24/26' used for construction that get highly abused that I have lost count. These posts go on and on here and at other RV forums just like an ST or Chinese tire thread, we use both of those also and my people abuse the hell out of them and everything else. A lot of people don't even know who made their axles and are posting on these threads. I'd put hard money down a lot of them had never known what a tapered bearing was until they bought an RV.
Lippert also makes axles and their system is called Superlube, or Lippylube, or Jiffylube, or something. Same design but Lippert has been known to ship axles to manufacturers with the cheapest single lip seals they can source. Ask a lot of Grand Design owners the last few years about it and the issues they have had. Most people I talk to with Lippert axles call them ezlube also. IMO Lippert produces nothing but garbage, especially so when compared to Dexter. I have yet to see a new Dexter ezlube axle on anything that had a single lip seal.
There are millions of boat trailers out their using bearing buddies that do not blow seals. That's an entirely different arrangement but it keeps constant pressure on the grease while the wheel is rotating and experiencing road shock....with no blown seals. That being said I would argue that maintaining positive pressure on the grease would be more prone to blowing past the seal than the grease pumped into the cavity which was only under pressure while pumping in through the zerk.
IMO operator error, or as others have mentioned seals getting damaged by other reasons like the minimum wage nose picker down at the RV dealer pulling the drum for an inspection and bashing the seal against the end of the spindle. I use it and will continue to use it, and this thread and others will go on forever lol.