Thrust Washers Summary

[Jjcousins@ra.rockwell.com]

Guys (and at least two Gals):

Could someone please briefly describe the infamous "thrust washers" including:
what they do,
where they are,
how can you check them roughly (cursorily i.e. without removing the oil pan -
moving the pulley?), and
how to replace them (although I suppose this is already described in the
previous e-mail well enough)

Thanks in advance.

-John
77' Spit