[palonso]

       
Dear Colleagues 

I am in a job of carying out a routine maintenance of my old Philco Radio Model 38-10. To get access to the components  (vacuum tubes, capacitors, tuning dial etc)   we need to  take out the complete chassis from the cabinet and it is necessary to take out all the knobs. The band selection, the volume and the tone Knobs were taken out very easily but I am experiencing some difficulties in taking off the tuning knob that moves the tuning dial. This is a double knob one outer knob for a coarse adjustment and an inner knob for a fine adjustment of the tuning.

Do the knobs be pulled out simultaneously or separately ? Due to a long time since the last preventive maintenance intervention, the knobs seem to be glued together and I am afraid to use a big force to pull them out that could damage the plastic dial that is very fragile.

Any tip on how to pull these knobs safely will be most appreciated.  

Thanks to all in advance ! I will try to post a photo of the radio enclosed to this message.

Paulo Alonso