Question on Removing Day wheel from an ETA 955.424

[signcarver]

I am working on a quartz watch with an ETA 955.424 movement. Even though the watch doesn't have a "Day" function, the movement has a Day wheel.

I can't figure out how to remove the Day wheel so i can gain access the the Date wheel and other components.

I can't find a service manual or video on how to do this. I did find a similar movement that shows a "C" clip holding the Day wheel but this movement has no such clip.

The Day wheel looks like it should lift off but when i try, it is resisting and i don't want to force it. The wheel spins freely so maybe it is simply press fit over the "canon pinion"? Note that the Day wheel is part of the silver disk in the center so, if it is press fit it appears that i would have to lever under the outside of the disk which could compromise the Date wheel???

Any suggestions would be appreciated!

[mikepilk]

If you look in the Cousins documents they have one for the 955 series.  For the 955.422 it shows a C clip holding the day wheel, which is expected. I don't know what could be holding it down.

[RichardHarris123]

I don't know either but your in your photos the day wheel has holes in, @mikepilk diagram doesn't, not sure that it matters.  Does the hour wheel have a recess to hold the circlip?

[signcarver]

@mikepilk Thanks Mike. As an aside, I found that there is a replacement movement called Eta 804.124. It is about 1/4 the price of the 955.424, but has no jewels.

I wasn't planning on disassembling the movement but it wouldn't run after i installed a new battery.

@RichardHarris123 Thanks Richard - No recess for a circlip. 

[signcarver]

Holy dumba$$ Batman... There IS a circlip. I had another closer look from the side, and lo and behold.... It's a tiny silver clip at the base of the brass collar. I couldn't see it from above.

Boy do i feel silly. Thanks @mikepilk and @RichardHarris123

Still, i'm glad i posted and did NOT try to force the wheel. 

Another problem solved thanks to you guys and this forum!

Edited September 7, 2023 by signcarver
typos

[signcarver]

Follow up - I found a data sheet on the ETA 955.424 here.