Federal Q mechanical siren sounding after repair

After a loosened hex nut is re-tightened
back to normal.
There is a clip prior to this that shows points of activation while not repaired.
This clip shows after repair.

[@SOU6900]

I love this classic siren. I'd take it any day of the week over the electronic one if I were in the fire service.

[@bryankirk755]

Oh baby, there’s some ear candy

[@davidglaum2538]

What a wonderful sound.

[@michaelconstantinou9121]

amazing

[@robertbrady9597]

great coverage

[@tantairong8045]

where is this fire truck from

[@drosenberg8018]

Which hex nut was lose? Having the identical issue.

[@fmartinjr]

There is only 1

[@fmartinjr]

Ain't but one hex nut.
The only one once the clutch Cap is removed.