I checked at the library on the AllDataPro and this is what I found:

TSB 03-26-002
front bearing noise

60 mo/60,000 warranty

sounds like the same senario as the harmonic balancer,,,
the torque has been upped to 147 ft.lbs.
The castle nut has been redesigned.

The new nut is a castle and is self locking and can only be used once. It comes with threadlock on the threads.

The nut is : MN103380

The complete kit---the bearing/hub assembly with nut , washer and cotter pin : MN103586

Looks like bearings are not servicable, so shelling out bucks is the only fix according to alldatapro.

I didn't see anything yet on the seals, but I'll look again on the site tomorrow.

dave h.
'89 Raider V6 5spd;Aisin Hubs;; Gen2 LS: frt. brakes, rear coils;U.C.arms;R.trailing arms;idler arm; rear LSD axle w.disc brakes ;2 battery system for Dog's fan; relocated ECU; custom bumpers;J.Baker receiver;Conferr roofrack; t-bar crank.