Open a screw down pusher - need (internal spline?) tool recommendation

[k3l3k]

Have got a Anonimo Zulu Time  (Soprod C115) for repair. The movement spacer (which is also holding the movement down) is blocked by the 24hour pusher pin (just above 2 O'clock). Its a screw down and I need a tool to first take it out before I can remove the movement holder after which the movement can come out. Need a tool to take out the pusher unit from the case first. Please could I have tool recommendation?

First picture (black case): The outer diameter pusher unit (with teeth) is 4.1mm and the space to go in has a diameter of 5.5mm. I do not have a suitable tool of hold the pusher unit to rotate it,  so need help.

Not sure if this would work https://www.cousinsuk.com/sku/details/pusher-pendant-tube/p1433?skuId=47515

 

Pictures here are from the web as I closed the case before taking pictures, but can provide own pictures if needed.

Edited August 15, 2024 by k3l3k

[AndyGSi]

I could just be me but can you calrify what you mean by 'pusher unit' as I haven't got a clue?

[k3l3k]

9 minutes ago, AndyGSi said:

I could just be me but can you calrify what you mean by 'pusher unit' as I haven't got a clue?

Sorry, about the choice of words but this is what I meant by the pusher unit (the outer pendant which is threaded + the pusher pin within). Marked with red arrow in picture below. Its the outer pendant I need to take out before I can de-case the movement.

[nickelsilver]

My gut says that the movement and case ring can "tilt out" once you've removed the stem. If you do have to remove the pusher, it might be a bit of a coin toss which tool will fit, and then it looks like there's little room for the outside of the tool in the recess. I have the Horotec set with a number of the female drivers and most have a pretty thick wall thickness.

[k3l3k]

3 minutes ago, nickelsilver said:

My gut says that the movement and case ring can "tilt out" once you've removed the stem. If you do have to remove the pusher, it might be a bit of a coin toss which tool will fit, and then it looks like there's little room for the outside of the tool in the recess. I have the Horotec set with a number of the female drivers and most have a pretty thick wall thickness.

Thanks, but already tried tilting, did not work!

[AndyGSi]

If it does need to be removed then I would have expected the pusher to be release from a circlip on the inside.

[nickelsilver]

Probably safest bet is to measure the OD of the pusher, and get the driver bits for the Horotec tool at that size and one over and one under to be sure. They can be gripped in a sturdy pin vice. Or, the handle is 27 pounds; that plus the 3 bits and you're just about the same as the single size tool you linked- and you can add on bits as needed.

 

I just wonder of the OD of the driver bit might need to be reduced to fit- you'll have to try and see.

 

And what a pain of a design!

[k3l3k]

25 minutes ago, nickelsilver said:

Probably safest bet is to measure the OD of the pusher, and get the driver bits for the Horotec tool at that size and one over and one under to be sure. They can be gripped in a sturdy pin vice. Or, the handle is 27 pounds; that plus the 3 bits and you're just about the same as the single size tool you linked- and you can add on bits as needed.

 

I just wonder of the OD of the driver bit might need to be reduced to fit- you'll have to try and see.

 

And what a pain of a design!

I agree, the design is a pain. Do you mean this bit Horotec MSA03.620.203? If someone has this, could I get a measurement of its outer diameter please?

The other option is https://www.cousinsuk.com/product/pendant-tube-chronograph-fitting-removing?code=P1433, but again it would help to know the outer diameter first.

[nickelsilver]

That Horotec bit measures 4.30mm in my set, but they list it as 4.35mm.

[AndyGSi]

If it needs to be unscrewed then surely the gap at the back is
so you can do it with your finger like some Seiko crowns?

Edit

Other option to unscrew is just a cheap crown winder.

Edited August 15, 2024 by AndyGSi

[k3l3k]

11 minutes ago, nickelsilver said:

That Horotec bit measures 4.30mm in my set, but they list it as 4.35mm.

Many thanks. Could I know the outer diameter please? The outside of the bit needs to go inside 5.5mm recess.

[nickelsilver]

43 minutes ago, k3l3k said:

Many thanks. Could I know the outer diameter please? The outside of the bit needs to go inside 5.5mm recess.

That's the outer diameter. The inner diameter, with a caliper, is about 2.35, with 16 splines. Your corrector looks like it has about 24+, what's the OD of it and exact number of splines?

[k3l3k]

2 hours ago, nickelsilver said:

That's the outer diameter. The inner diameter, with a caliper, is about 2.35, with 16 splines. Your corrector looks like it has about 24+, what's the OD of it and exact number of splines?

Thanks. Please see attached picture with dimensions I just remeasured with a calliper.

I count 22 grooves

[Gula67]

Did you try remove the casing screw and clamp? Many watches unfortunately design that way,if you remove the screw and clamp,the movement will drop down a little then you can tilt out the casing ring. Also,check the oscillating weight position,not to stuck on the casing ring when you tilt and take it off. And make sure the stem is out too before you try to remove the casing ring. Some casing ring of just have a hole instead the cut out for the stem.

Edited August 15, 2024 by Gula67
additional information

[k3l3k]

1 hour ago, Gula67 said:

Did you try remove the casing screw and clamp? Many watches unfortunately design that way,if you remove the screw and clamp,the movement will drop down a little then you can tilt out the casing ring. Also,check the oscillating weight position,not to stuck on the casing ring when you tilt and take it off. And make sure the stem is out too before you try to remove the casing ring. Some casing ring of just have a hole instead the cut out for the stem.

Thanks. Have checked/tried all.

[AndyGSi]

What does that back of the pusher look like?

[Gula67]

Any possibility the hole unit coming out on the front?

[k3l3k]

3 hours ago, AndyGSi said:

What does that back of the pusher look like?

Pictures attached. A big chunk of the movement spacer sits under the pusher pin. A lip on the movement spacer prevents the movement to move out. 

So I need to take the pin out first before I can de-case the movement. I think I need the Horotec bit but cannot identify which one. Do not want to get the full set.

[RichardHarris123]

The case clamps suggest the movement comes out of the front. 

[AndyGSi]

36 minutes ago, k3l3k said:

A big chunk of the movement spacer sits under the pusher pin.

To me it looks like what you think is the spacer is actually just part of the case.

As @RichardHarris123 said, the clamps, and also the 2 screws at 3 & 9 suggest a front loader.

[k3l3k]

10 hours ago, AndyGSi said:

To me it looks like what you think is the spacer is actually just part of the case.

As @RichardHarris123 said, the clamps, and also the 2 screws at 3 & 9 suggest a front loader.

Certainly a possibility. Will check today.

[k3l3k]

12 hours ago, k3l3k said:

Certainly a possibility. Will check today.

Thanks for all help and apologies for my inexperience. Turned out to be front loader with screw-in bezel. 

Edited August 16, 2024 by k3l3k

[AndyGSi]

No need to apologies, this is what the forum is for.

[RichardHarris123]

We're glad to help.