174 Gear Works

It’s all this time on my hands (4” rain this week!), I thought I would tackle the noisy motor on my blue glass domed 174. In the back of my mind, I was trying to remember just what is involved. as I got the gearbox cover off I remembered...oh yea, you have to disassemble the entire beacon! Oh bother. But while I had the gearbox cover off, I thought I would take some pics for our curious members: As you can see, it’s packed in pretty tight I there.

This is the dwell cycle where the cam is over the motor shaft.
C426FEB7-C101-428D-8C02-58181C90A534.jpeg
This is the sweep cycle where the cam is furthest from the motor worm gear.
DB6FE8FE-0EF5-4BA6-82FA-10254C23136D.jpeg
And a video:

Whilst I was at it, I ran the serial numbers through @stansdds excellent serial number decoder and discovered why the blue 174 is so noisy...its S/N is from August 1958–the year the 174 was introduced! I‘m the same “vintage“ and I make more noise than that!
Enjoy!
 

stansdds

Member
May 25, 2010
3,533
U.S.A., Virginia
Well done and I am very happy that my research is being put to good use!
 

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