Advised not to repack bearings???
Two years ago, and with our previous trailer, we had a miserable and expensive bearing failure while 4k miles from home. At the time, we had buddy bearings and were under the impression that they did...
Forum Discussion
tragusa3 wrote:You have two bearings in a hub. The inner larger one,, and the puter smaller one. Between them is the hub cavity. It should be full of grease. But there have been many reports that the factory doesn't fill them at least not all the way. No matter as after the first grease gun pumping, they will be filled all the way.
I'm not following this logic? If fresh grease is entering from the rear of the hub and moving forward, then the old grease from the rear moves forward in front of it. When you start seeing clean grease out the front, it has displaced the rear and front bearings old grease. No?
I don't see the amount of grease used as a major drawback, as it was $10-12 of grease.
I had no intention of this thread turning into an argument. I appreciate all input and considered all of the information available to me. I made a choice to use the system. If it bites me, so be it. I'm a big boy and can live with it.
The dirty grease that you see in the video exiting the spindle is from the smaller outer bearing. It is being pushed out by the clean grease in the hub cavity, which is being pushed by the dirty grease fom the larger inner bearing (this can vary by axle, but the inner bearing probably will hold about twice as much grease as the outer bearing) when you pump new gease into the zerk. In order to get the dirty grease out of the hub, you will need to keep pumping for quite q bit. And depending on just how full and evenly distributed the grease is in the hub cavity, (there may be some air voids in the hub) it may not come out in a ring like the video shows. In fact there can be some mixing of dirty/clean grease occuring as it makes it's way out... All of this pumping increases the likely hood of grease seeping past the seals and ending up on the brakes. No way to tell if this has happened. Also no way to tell if all of the dirty grease is out, or if some is hung up in a bearing.
You can see how this works can be seen by looking at the cutaway diagram that is used in the marketing.
