[Premium-Rx] Collins HF-2050

[Борис Никитин]

 Hello Chris,

At first find location of bearing in main tuning shaft, spray it with Silicone Spray, rotate knob back and forth some few minutes it became ease to move after that.
Then add  few drops of synthetic oil ( oil must NOT became dry with the time).

Make some inspection, probably  few more bearings there, if so do the same with them. 

Also check for rust in the shafts sleeves there, if yes, use rust remover.
Remove dust, dirt with pressed air if compressor available. Remove all old, dryed grease if used in and replace with fresh one...Then enjoy with smooth tuning knob rotation...

B.R.
Boris
UA3MCJ