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Old Roamer Anfibio case problem.

Flubber

By Flubber
in Watch Repairs Help & Advice

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Flubber Watch Enthusiast

Flubber

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Hi all,

I bought a really nice ladies watch in an auction (20 £) and I had great problems opening the case back. When I finally got it opened,I was puzzled since the whole movement was snuggly fitted into case back that was actually more than just a lid to open. I'm beginning to suspect that the watch was really intended to be opened from the glass side (like the Omega Cosmic). Any help on how to get the movement freed from the back so I may service it would be greatly appreciated. 
 

 

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Marc Distinguished Member

Marc

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Looks like a two piece or "split" stem. Roamer used this type of case quite a lot.

Try turning it upside down and slowly turning the crown. If you're lucky then when the joint between the two halves of the stem is aligned vertically the movement will just drop out, make sure that it has something soft to land on.

If this doesn't work then you will need to pull the crown with enough force to pull the two halves of the stem apart, releasing the movement.

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bjohnson New Member

bjohnson

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It might be a split stem.  If you hold the whole thing upside down and slowly turn the crown, you may find that the dial and movement fall out the front when the split stem is oriented properly.  In theory you could force the crown out but if I'm wrong, you might damage something

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Repivot Member

Repivot

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It too looks as if there is reflector ring around the perimeter of the dial. I suspect this is just friction fit in the case to help hold the movement in place. Use a sharpened piece of peg wood or plastic pic to try to pull this up from the dial before proceeding as others have suggested with the stem/crown.

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Flubber Watch Enthusiast

Flubber

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Indeed, you were all correct. The movement did not fall out by itself but after pulling the crown (surprisingly hard) the stem split in two and after removing the reflector ring as suggsted by @Repivot I managed to get the movement free. A beautiful movement almost in mint condition. I should NOT have removed the case back and I made som scratches on it in my attempts. Well, You live and you learn. Thank you guys !

 

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    • GuyMontag
      1972 Bulova President "E" Sea King 11ACACB movement

      By GuyMontag · Posted

      Yeah, I saw that in the tech sheet but I don't see how it can be adequately cleaned with the friction pinion still in place. I've accidentally pulled the arbor right out of the wheel once when I used a presto tool to try and remove it. Mark shows how he does it with the Platax tool. Those are a little too pricey for me so I got one of these from Aliexpress and I just push down on the arbor with the end of my brass tweezers. That usually gets it most of the way out and then I just grab the wheel with one hand the and the friction pinion with the other and gently rotate them until it pops off. Probably not the best way but it's seemed to work for me so far.    
    • Zedster
      Movement inserted from crytal side

      By Zedster · Posted

      Thanks, Jon Sounds like a plan. Obviously I'll have the face on so do you think gripping with the holder will create any problems, but I will check in the morning to see how feasible it is but I assume it only needs to be lightly held. As for holding the movement instead of the holder won't be possible in this scenario as one hand will be puling on the stem while the other pushes the spring down. That was my initial concern is how the hell can I do this with only one pair of hands. All the other times I've had to remove the stem hasn't been a problem, apart from the force required to release the stem from the setting lever, but now I need to fit the face and hands its sent me into panic mode. If it had the screw type release things would be a lot simpler but that's life 😀       
    • nevenbekriev
      Main spring

      By nevenbekriev · Posted

      Hi Jon, do You think that relation spring torque - amplitude is linear? I would rather guess that the amplitude should be proportional to the square of the torque. I had once idea to check it, but still haven't.
    • ManSkirtBrew
      1972 Bulova President "E" Sea King 11ACACB movement

      By ManSkirtBrew · Posted

      I did not. I thought about it, but I had cleaned it in my ultrasonic, and the tech sheet shows lubricating it in place already assembled, so I figured discretion was the better part of valor. Although since I have to depth the jewels anyway, maybe I pull the pinion off to rule it out 100% as part of the problem. Do you know if there's a safe way to do it? I don't want to use a puller because it would push down on the plane of the wheel, and that seems like a Bad Idea. I thought about using a roller table remover, but I don't think I have a hole stake pointy enough to push it down.
    • oldhippy
      Movement inserted from crytal side

      By oldhippy · Posted

      Before putting it back in the case I would fit the hands and use a pin vice on the stem to make sure the hands were in line. 
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