[R-390] R-390 (Non-A) RF Gears Cleaning

[Barry]

I'm not a fan of WD-40 for cleaning.  It really wasn't it's purpose.  I like naphtha for a grease and oil cleaner followed by synthetic oil judiciously where needed.

Barry - N4BUQ

> I would not use WD40 on anything of value.
> WD-- water displacing formula 40.
> Cleaning such I find is quite well accomplished with Brake Cleaner by various
> manufacturers:  I purchase the lowest price at my pal's NAPA store.
> I like Starrett instrument oil as well as KROIL Microil'
> Chers AllRobert
>    On Wednesday, February 11, 2026 at 01:01:30 PM EST, Alex Hopper
>    <ahopper0216 at gmail.com> wrote:
> 
> Hi All,
> 
> I have done quite a bit of reading on the best ways to clean the RF deck
> gear train on the R-390.  Seems that most people recommend a thorough flush
> of WD-40.
> 
> Does anyone have personal experience with this?  I am tempted to try it,
> however I am NOT interested in removing my RF Module.  Is this something I
> can carefully do with the RF module still intact?  I would use a long
> 'staw' aimed down carefully into the gears.
> 
> -Alex
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