Couldnt find a thread on rebuilding these....so has anyone ever done this? is it a tough job? what kind of tools am i going to need?

not that difficult, but I believe the rubber rings that go around the dial have been discontinued by Isuzu. likely you can get them from Toyota or Suzuki.

there's also a pair of gaskets that go between the hub body & inner hub (bolts to the rotor & holds the outer bearing). they should still be available, I have the part # somewhere.

good Aisin hub info:
http://www.off-road.com/toyota/tech/aisin/index.htm
http://myweb.cableone.net/bcanderson/trooper/Manual%20Hubs/Manual%20Hubs.html

AISIN HUB REBUILD KIT

so what is the proper part for a '98 amigo? there seems to be many aisin hubs out there. samurai, yota, what kind????

Which part of the hub assembly?

The Aisin Isuzu assembled hub is different from an Aisin Toyota assembled hub, although there are significant parts in common. The hub body and sliding clutch hub are the principle differences, and many of the other parts interchange.

Aisin makes a Suzuki hub assembly, as well, but it and its components are smaller than Isuzu and Toyota bits.

Randii

I am in the process of doing the same. I manage to get the sprawl (Shiny piece that hold the spring) direct from Isuzu as a standard part from the old KB series. On later models it is not listed as a separate part. I can mail the apt number to you Monday. The large inside lock ring near the base of the hub body I could not find but I went to one of the main bearing manufacturers and manage to find a similar lock ring on a bearing. A lot faster and cheaper than ordering it from Isuzu.
If you manage to find a part number or supplier for the rubber rings that go around the dial I would be interested in it as well.
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i used bruce andersons write up (linked above), i had never even seen a manual hub before until my new (used) ones arrived all blown to bits in a box.

took me a few hours, but i got them reassembled.