[Hallicrafters] Cleaning heads

[pete wokoun, sr.]

  These days we use 100% ethanol, not the denatured kind, to clean the heads 
and some of the tape path.  Yep, it's the drinkable kind but it's strictly 
for maintenance.  For the rubberized capstan, we can't get the freonTF 
anymore either.  The mfg now recommends heptane as a substitute.  That and 
wooden stick q-tips.  This is for 16 and 32 channel 1-inch recorders.
  I'd hesitate using lighter fluid as previously posted on these $$$$ 
monsters.


>From: "TC Dailey" <daileyservices at qwest.net>
>To: hallicrafters at mailman.qth.net
>Subject: [Hallicrafters] Cleaning heads
>Date: Mon, 31 Jul 2006 08:36:14 -0600
>
>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
>
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