[don'tdomelikethat]

I'm working on the code 125 version of the model 16. On the tuning shaft, there's a fine tuning adjustment inside the main shaft. It will turn the tuning cap in some places, and other places it won't. I thought maybe that the dial cords were slipping, but at closer investigation, it's the inner shaft that's not turning at all in some places-apparently the cords are not at fault? Any thoughts? Thanks, Ed

[Sean]

The fine tuning control is a planetary drive with ball bearings. Most likely the grease has become hard and is keeping the bearings from moving freely. You could squirt some machine oil in between the course and fine tuning shafts to temporarily loosen up the grease. Really the best way to fix this is by disassembling the tuning drive to clean it up and re-lube the parts. I did this on my 16X code 125 that had the same problem.

[Chuck Schwark]

Your dial drive mechanism may be similar to this one from my Service Tips Section:

http://www.philcorepairbench.com/tips/svctip14.htm