|
|
Tuning friction assembly. The friction plate under the tuning dial should just push into the two small friction drive plates under the small tuning knob. This is an adjustment you make as you tighten the nut on the drive spindle. If they mesh too much the drive will be hard to turn. If they don't mesh enough then turning the tuning knob will not rotate the tuning dial at all.
Some drive mechanisms are eccentric so rotating the drive mounting bush in the chassis adjusts the amount the friction plates mesh. Other drives rely on an oblong hole in the chassis so the relative positions of the drive mounting bush and tuning knob can be adjusted.
It is doubtful that your tuning dial rotates perfectly true.....so allow the friction drive to have some float so it can move up and down to follow the movement of the tuning dial mechanism as it rotates. The drive will feel very "rough" if you don't do this.
It sounds complicated, but it isn't, and in practice and you will soon find the correct relative positions of drive and tuning dial to give smooth rotation. Oil the drive spindle sparingly and the capacitor shaft to make sure they are free to rotate!
If your tuning dial just will not rotate without wobbling then I suggest you remove the friction plate from underneath the tuning dial, this will allow you to push the tuning knob down further onto the capacitor spindle. It should rotate and be fairly true. Now use the friction drive on the edge of the tuning dial, you will find it works very well. I do this on my Parasets and am very pleased with the results.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2009
