Does my dweller need a service?

[Paulie]

Originally Posted by Ricardo

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Apart from gaskets,they replaced Winder crown,stem and tube. 3rd 4th and 5th gear wheels,balance wheel with hairspring,reversing gears and they even replaced the helium release valve!!!

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Here's a very old video from 1949, which will give you an idea about what those gear wheels and balance do.

http://www.archive.org/details/HowaWatc1949