AS 536.121 Quartz movement--keyless works...grrrrr!!!

[LittleWatchShop]

More of an observation than a question...well...maybe a question.

Today I replaced a crystal on a diver watch with an AS 536.121.  This is a vintage quartz movement.

You would think this would be a trivial task. Noooooo!!!

It took me three tries because of the keyless works.

Each time, the setting lever jumped off the clutch and/or the detent disingaged.  Why so hard?

The last successful attempt--I remembered reading somewhere that the stem should be in "setting" position before removed--that is what I did.  I am sure this issue has ended friendships, so I don't want to cause a ruckus here (at least there are no rheostats involved...lol)...should I have put this thing in setting position on the first try?

Frankly I think this movement design is flawed and it does not matter which state the stem is in before removal, but I have only been around the block.,,maybe once.

 

[HectorLooi]

16 minutes ago, LittleWatchShop said:

(at least there are no rheostats involved...lol)

Well... there is a trimmer...

[LittleWatchShop]

17 minutes ago, HectorLooi said:

Well... there is a trimmer...

Lol...indeed!

[watchweasol]

Hi  There are several watches that employ the method even when removing the stem, I think its a gotcha to stop people poking about

[jdm]

14 hours ago, LittleWatchShop said:

 it does not matter which state the stem is in before removal.

That is how Seiko, Miyota, and many others do on quartz. A variation is to make the release point accessible only in the correct position.

Then ETA 2824 has the "caveat", yet you hear owners praise it all the time.