[GreenKeys] Teletype motor slip ring maintenance

[John Nagle]

    I just got a Model 14 in, and I'm cleaning it up.
The synchronous motor runs, but produces some ozone.
It shouldn't do that; this is a synchronous motor, with
slip rings only; no commutator or governor.  So the
slip rings and their brushes may need some attention.
How is that done?  I have a Model 15 adjustments manual,
(same motor), and that doesn't cover it.

				John Nagle