[R-390] Beware RF deck coils.

[Cecil Acuff]

Greetings Folks,

        While going through an R-390 RF deck as part of a restoration it was 
discovered that one of the coil forms had come loose from the glue joints to 
the end plates.  This allowed the coil to move vertically about 1/8th of an 
inch and to also rotate.  The rotation was only limited by the length of the 
excess coil wires. (not a good thing) Very little effort was required for 
the coil form and coil to move vertically...probably the dragging of the 
core would have easily moved it causing problems with proper/reliable tuning 
of the coil resulting in sensitivity problems.  I re-glued the coil form to 
the end plates with some Duco bond cement and all should be ok.  I have only 
found that one so far but am only half way through the cleaning and visual 
inspection of the coils.

Just a heads up...if you are going through one of these things...or an "A" 
it pays to check each and every coil as part of the process.  I found many 
spider nests in the coil housings as well.

Cecil....