Shanebo,
Remove the wheel, brake drum, brakeshoes an brake line. Undo the four bolts that hold the backingplate.
As the bearing slides into the axle (tight fit) you have to tap the whole assembly out. I made a piece of steel 1 ft or so, which hooks on the back of the hub and welded a plate on it on the other side so I could gently tap the whole assembly (out) off the axle.
What you will see then is that there is space between the inner oil seal and the bearing. That is where you can drill a hole in the axle housing and put a grease nipple in. Be care full not to drill into the oil seal (which I did offcourse). Take the metal pieces out as the will ruin your bearings (this is why you have to take the whole assembly off, otherwise you can not clean the axle from metal pieces).
Grease the bearing as far as you can, be carefull that there is no dirt falling from the backingplate into the freshly smeared bearing..... Then install the four bolts and tighten them evenly (turn by turn crosswise) to press the bearing nicely into the axle. Further installation is the same as removal. Take the air out of the brakelines!
It takes a bit more than an our or so to fix each side depending on how handy you are wich installing the brakes (allways a struggle for me).
BTW, the idea of installing a grease nipple is not my idea, I saw this on the Nest some where on a picture, but I think this the first description how to fix this. Maybe something for the Eaglepedia?
Anjo
Holland