How remove Certina movement? (KF 404)

[gaseff]

Sorry for asking yet another how to remove movement question!!!

I have the back off and the crystal off.  It was not a split stem.

The movement and dial do not fit out the back or the front.  A conundrum indeed. 

The movement and dial move front to back about 1/16 of an inch, so it is loose in there.  And it rotates freely.  But the front and the back of the case are not wide enough to get the movement and dial out.

I think the movement would come out the back if the dial were not attached.

There is a rubber gasket still on the back rim in the photos.

As always your help is much appreciated.

-George

[watchweasol]

Hi  The fact that it rotates ok and moves front to back ok and the movement locking screws are out there is not much left to hold it except probably the rubber locking gasket, But if it moves forwards enough for you to check and see is there are dial retaining screws around the edge of the movement and if so can you gain access to the  to remove the dial.   I have attaches some certina case details in the hope they might prove usefull.

Certina C0174101103700 Case.pdf

[Nucejoe]

23 minutes ago, watchweasol said:

Hi  The fact that it rotates ok and moves front to back ok and the movement locking screws are out there is not much left to hold it except probably the rubber locking gasket, But if it moves forwards enough for you to check and see is there are dial retaining screws around the edge of the movement and if so can you gain access to the  to remove the dial.   I have attaches some certina case details in the hope they might prove usefull.

Certina C0174101103700 Case.pdf 167.92 kB · 1 downloa

Hi watchweasol, thank you for these PDF links, great.

In my book, you win the day everyday. 

[gaseff]

Thank you, as always, for your help.  Thanks for the PDF - not really what my case construction looks like.

The 2 movement retaining screws have been removed earlier.

I just scraped off some of the gasket material. (yellow arrow)

It looks like there is a metal ring inside the case.  (red line)  This is certainly what is preventing the movement/dial from coming out the back.  Do you think this ring is removable?  If so, how might that be done.

 

[watchweasol]

Hi  I have not had the pleasure or misfortune to work on on of those, But I was thinking it might just be one of those movements that you have to turn to align the movement with slots in the case rim to allow it to drop out, worth checking out.

 

[gaseff]

Yeah... no visible slots.  No bezel on the front to remove.  No visible dial screws.  Dang.

[jdm]

Mov't ring must go out first. It can be tight, work with patience.

[gaseff]

Any ideas on how to get the movement ring out? 

can I use a back press and push it out from the front?

or

maybe remove all of the old gasket and put some penetrating oil around the ring?

Do they pry out?

Open to ideas.

[watchweasol]

Hi Gassef  looks like we are left with plan B  as jdm remarked the ring has to come out so I guess its some patient prodding and poking that is now required to explore all the edges for a clue..  we have tried all the soft options

[gaseff]

Thanks.  Will do. Hard options - full steam ahead.

[watchweasol]

Hi  I had a look on Ranff's watches  he doesnt list the 404 but lists the 410. On the pictures there are no movement projections to hold the movement in the case. 

[gaseff]

I am beginning to think that with this watch stuff - knowing what to do is half the battle (that and not losing any of those tiny parts ;-)

Thanks so much.  Pried the ring up after taking out the gasket gunk and it came up after a bit of a battle.

Movement and dial and movement ring are out of the case!

[watchweasol]

Hi So the denatured gasket was the culprit, It must have all but welded its self in , Well done for keeping your cool and working logicallyRESULT.

[gaseff]

Yes.  That thing did not budge until the gasket was out and scarped away.  Thanks again, all!