Sony SS-5050 cleaning pots

I am refurbishing a pair of Sony SS-5050 Carbocon loudspeakers.
I wish to clean the midrange and tweeter potentiometers and I am waiting with my tin of Servisol to give them a squirt, but I cannot see how to get into them.

Advice gratefully received.

IMG_20250414_162942.jpg
IMG_20250414_162940.jpg
IMG_20250414_162946.jpg
 
Thank you, @Lojzek .
Forgive me, but I absolutely cannot see how it is attached. I think you may be talking about the metal 'strips' on the left on 1 and the right of 3. They actually continue all the way around the 360 degrees of the metal pot. If you are suggesting that all of those 'strips' need to be released, then I would understand that, and thanks.

I have a multimeter. How would I measure the resistance with three terminals (I've previously measured across + and - only, or capacitance with bipolars - 2 terminals) ?
 
Alright, strips they are. They are holding it together.

For each L-pad position (12 o'clock, etc...) measure dcr across 3-2, and 2-1.
You get to know 2 resistance values for each setting. You can use these values to
make your own L-pad, or to compare with ones after cleaning, whatever.

L-pad.jpg