Most carrier bearings are sealed, but you can work a little wheel bearing grease under the seal lip sometimes. A big hypodermic syringe and a horse-sized needle might come in handy, just slip the tip of the needle under the seal lip.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!