Dial-up members be aware the above linked Insight page loads with 100+ pics. Be prepaired for a loooong load time.
If yor interested in what these parts look like then its already here in a precision sketch version (if you want full color you've gotta pay the download time price

).
See:
http://www.insightcentral.net/encyclopedia/enmotor.html
(includes a easy to read low tech outline of the parts description and operation)
and:
http://www.insightcentral.net/encyclopedia/
for the same on most anything that makes the Insight unique.
HTH!