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Gow to open this Hefik?

ChrisBC

By ChrisBC
in Watch Repairs Help & Advice

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ChrisBC New Member

ChrisBC

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Posted

Hi All,

I'm new to this forum and have this old Hefik watch. I'd like to see the movement but can't work out how to open it.

I can easily open the watch around its centre which will removes the glass but the movement is retained by the winder.

There are no notches to indicate that the centre portion of the back will unscrew, and no obvious lip to lever it open.

Does it look the type where the winder can be pulled out than the movement taken out from the front?

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Nucejoe Distinguished Member

Nucejoe

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The seam between top bezel and the case is clearly visible in your third picture.

Insert a safety razor blade into the seam, work all the way around the case. Next you may need to use a knife to crack it open. 

The art of this task is to leave no scars.

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jdm Distinguished Member

jdm

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Posted (edited)
49 minutes ago, ChrisBC said:

I can easily open the watch around its centre which will removes the glass but the movement is retained by the winder.

What you removed is called bezel. Now you need to pull straight out the the stem, which is designed for that, either made of one or tow pieces. A nails clipper with a filed center notch can be useful.

The center on the back is not not removable and even if it was it would not allow to reach the stem release. 

BTW we have a section where it's considered polite for new members to introduce themselves. 

Edited by jdm
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Nucejoe Distinguished Member

Nucejoe

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With the bezel removed, if you can,t just lift the movement and stem out,  You best put the bezel back on  and remove the stem first.

It would have to be a two piece stem. You put the bezel back on to protect the dial. 

To remove the stem, pull it out to set position, insert your tweezers in between the case and the crown, crack the crown( stem attached) out. You may use nippers to just pull the stem+ crown out.

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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 😀   Another thing I will need to consider is once the dial and hands are fitted and the movement is sitting in the case I will need to turn it over to put the case screws in. I saw a vid on Wristwatch revival where he lightly fitted the crystal and bezel so he could turn it over, is this the only option or is there another method?      
    • 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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