I believe that the EZ lube hubs are drilled so the grease goes in
the end of the spindle and comes out behind the rear bearing between the rear bearing and the seal.
Then it moves outward thru the rear bearing and then
thru the hub and finally thru the outer bearing
and appears as excess oozing out around
the outer bearing washer and nut.
This is a pretty good design as it forces out most of the
air and more or less completely fills the hub and bearings.
If done correctly and SLOWLY it should not blow out the rear grease
seal as the excess is vented out the end around the grease
fitting. Stiff cold grease or grease shot from an air powered grease
gun can be forced out the seal as it cannot pass thru
both bearings and out the front end fast enough.
In my case, after I disassembled a couple wheels I discovered
that my spindles are drilled and tapped for this grease fitting in
the end but it was not installed.
They (Forest River) saved all of 2 or 3 bucks by short changing
All it needs is 4- 1/4 28 grease fittings and 4 grease caps with
the removable rubber center. These can be bought for a few
bucks at etrailer.com
I'll put in a temporary grease fitting and fill each hub thru the end of the spindle.
Once grease is all the way thru the hub and coming out the front
bearing, I'll re-install my bearing buddy caps and be done
Well yeah, there is still that little chore of adjusting
all 4 brakes