Quote:
quote:Originally posted by 8e3k0
The actual hub cap in any wheel bearing application is the seal (threaded or press fit) and will sometimes hold more than that rear seal mainly do to area displacement. I have blown the inner seal on a Agriculture plow wheel bearing yet that cap remained snug and in place; other times, yes you can blow the cap off by over greasing if the zerk is on the hub of the wheel. In these applications the rotational speed is low (no heat). On an average RV the wheel rotation at 60 mph would equal about 650 revs per minute which is quite slow compared to 1800 to 3600 rpm in a lot of bearing applications. So on RVs with the right amount of grease and proper bearing adjustment the repacks likely do not need to be completed at a high frequency as noted above.
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There is no conventional bearing cap on the easy lube system. That's why it is important to inspect those little rubber caps because they are all that stands between the front bearing and dirt/water.