[Hallicrafters] Cleaning heads

[TC Dailey]

As I typed the subject line, it occured to me that I'd done that very thing
in the Navy, but it was a different kind of HEAD.

While working in the AV field for many years, I serviced a variety of pro
tape equipment - audio AND video.  My best results were gained with 99.8%
Isopropyl Alcohol (yes, it's even in the drug stores), followed by spray
FREON TF; of course, we can no longer get.   The alcohol worked the best;
the freon was only to remove any traces of oil or other compounds.  DO NOT
USE 70% "rubbing" alcohol, it contains glycerin and other contaminants
(it'll leave a sticky surface which will "eat" tape), and 91% "medical"
alcohol won't cut the oxide.  Should you wish to clean VIDEO heads, use only
a back-and-forth motion - NEVER UP-DOWN!

The alcohol is also splendid for cleaning the pinch-rollers and guide posts,
not to mention rubber belts.

Tom - WØEAJ