[R-390] Benchmark - R390A odd-ball cleaning and lubrication

[Richard]

Once upon I time I had an article published in the 1998 Summer-Fall 
Hollow State Newsletter on R-390A cleaning and lubrication.  That was 
before this mail reflector was running full tilt and the collective 
wisdom prevailed.   Without starting a major upheaval I wanted to post 
the results.  To preface this I started with a 1968 Dittmore-Freimuth 
unit from Fair Radio.  It wasn't badly gunked up but did have a broken 
clamp that required complete disassembling of the gear-train.    I 
cleaned everything with Hoppe's #9 Solvent and lubricated with Hoppe's 
Gun Oil and Gun Grease.   After reassembly the KC change know would spin 
with a little finger.   I caught a lot of flack for my choice of 
solvents and lubricants.  I'm still not sure why people thought it wise 
to argue with someone who also uses the same materials on firearms.      
After over 12 years of frequent (several hours/day three or four 
days/week) operation in my nice air-conditioned and heated workroom it 
still not time to lubricate the gear-train again.  I realize it is not 
24/7 in the desert but then neither am it:)  However next time 
Mobile-One is it...

73 de Richard W5SRB