Can't disassemble the front hub assembly, it's only replaceable as a unit. Some have pulled them apart by mistakingly using slide hammers to remove the hub, but it's not correct.
There's 2 new ones for sale on
www.naxja.org/forum in the for sale section, $100 each. Normally $125 each or more.
Used ones are $25 each in the local yard, that's the route I take.