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

[Thomas Hoyer]

 Typically I remove the RF deck to do the WD40 bath, but I suppose it could be done with it still installed. 
You need to use the wD40 like a hose, spray it on, don't be shy, then use a stiff brush to work it around. Then another "rinse". Repeat as necessary. I use an old cooking pan under the module to capture the run off.

TomW3TA
    On Wednesday, February 11, 2026 at 01:01:35 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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