All Wave 12 tuning dial cord assembly repair

[Ronald Babb]

Hi,

i have started on the All Wave 12 that I pictured in my previous post a few days ago.  Someone before me recapped the receiver and replaced the volume control.  It looks like new dial cord has been put on the left dial but the tensioner is broken.  What should I disassemble to repair this; what do you use for the tensioner and how is it installed and how do you reassemble the dial assembly and dial cord? 

Ron

[Norman S Braithwaite]

It appears that someone has also restrung the dial before as well.  The original dial cord was woven phosphor bronze cable.  Going from a hazy recollection, the tensioner was a straight piece of spring wire with a "U" in the middle.

Norman

[David C. Poland]

Mine had string - not ordinary string, but dial cord string that does not stretch. Broke and I had to restring it some years ago.

Notes:    You will need to play with the mechanism a bit to see how the dial cord wraps around the grooved brass pieces for each end of the string that wrap onto the shaft of the tuning knob. The dial string wraps around each of the two little brass cylinders a couple times. As you turn the dial, the grooved brass cylinders spin on the little axels to take up and play out the dial cord from the tuning knob shaft. Study the action of your good dial. As I recall the "tensioner" spring is fixed to the middle of the dial string, and is a challenge to work with. If you are missing the tensioner, best to seek the correct tensioner spring from someone with a parts chassis.

And - Oh yes - if you have three hands, would be a benefit. I only had two.  :-).

[Ronald Babb]

We’re hou able to restring it in place?   I was wondering if you had to remove the one dial assembly and restring it out of the radio.  Didn’t know if there would be enough room to loosen the screw holding the dial to the tuning shaft, remove the screws holding the base of the tuning dial and slide it over until it was clear of the tuning shaft?

David C. Poland said:

Mine had string - not ordinary string, but dial cord string that does not stretch. Broke and I had to restring it some years ago.

Notes:    You will need to play with the mechanism a bit to see how the dial cord wraps around the grooved brass pieces for each end of the string that wrap onto the shaft of the tuning knob. The dial string wraps around each of the two little brass cylinders a couple times. As you turn the dial, the grooved brass cylinders spin on the little axels to take up and play out the dial cord from the tuning knob shaft. Study the action of your good dial. As I recall the "tensioner" spring is fixed to the middle of the dial string, and is a challenge to work with. If you are missing the tensioner, best to seek the correct tensioner spring from someone with a parts chassis.

And - Oh yes - if you have three hands, would be a benefit. I only had two.  :-).