[Hammarlund] HQ150 Bandspread dial problems

[Kenneth G. Gordon]

On 2 Jan 2013 at 4:09, na2x at yahoo.com wrote:

> Thanks to Roger, Bill and Doug for he suggestions
> 
> They suggested cleaning the plastic dial and the metal parts that turn
> them. Sure enough, over the years, dirt had built up on the dial and
> the "pulleys". 
> 
> A good cleaning, and now they work fine. It's almost amazing that a
> little dirt could cause that much trouble.

There is one other thing that can make the problem worse: the old lube in the 
various pulleys has gotten hard and no longer has any "slip" making the dials 
more difficult to turn.

This also includes the bearings in the tuning capacitor itself. However, 
correcting binding there requires special techniques and the proper kind of 
lube.

Ken W7EKB