Racal RA117 Knob Removal Help

Ray Robinson robinson at SRSUNA.SHLRC.MQ.EDU.AU
Wed Sep 15 19:54:22 EDT 1999

Hi Bob,

> Hi --Hi -- Does anyone know how to remove the knobs from this rx?
> Used a hex wrench to remove button on front of knob but what
> do u do next?
I don't have mine in front of me,
but I beleive they are a "clutch" style knob.
There is a clutch inside the knob that squeezes onto the shaft.
The squeeze is accomplished by pulling the clutch into a conical
or tapered housing. The knob has a screw in the centre to do this.
Usually, just loosening the centre screw, releases the clutch,
and the knob is free.
Sometimes the clutch may stick in the housing, or bind to the shaft.
Pushing the centre in (or with a gentle tap) should free it.
Perhaps wiggling the knob, or lubricating the inside mechanism may asist.
Be gentle with it.

Ray vk2ilv

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