The process of "opening the crown of a watch" typically refers to either pulling it out to set the time/date or removing it entirely along with the stem. Here's a breakdown:
1. Pulling Out the Crown to Set the Time/Date
This is the most common meaning. The crown typically has two or three positions:
- Position 0 (Pushed In): This is the normal running position. The watch is wound (if it's a manual wind) and the movement is engaged.
- Position 1 (Middle): This position is often used for quick-set date adjustments. You'll feel a slight click as you gently pull the crown out to this position. Rotate the crown clockwise or counter-clockwise to change the date.
- Position 2 (Pulled Out Fully): This is for setting the time. Pull the crown out further (you'll feel another click). Rotate the crown to move the hands and set the correct time.
To open (pull out) the crown: Gently but firmly pull the crown away from the watch case to the desired position.
2. Removing the Crown and Stem Entirely
This is necessary for watch repair or movement replacement. It requires a bit more finesse and knowledge of your specific watch.
General Steps:
- Locate the Stem Release: On most watches, there's a small detent or button near the stem, accessible from inside the watch movement. This is often near the "setting lever."
- Depress the Detent: Using a small tool (like a small screwdriver or pin), gently press down on this detent while simultaneously pulling the crown and stem out. You usually need the crown in the time-setting position for this to work.
- Pull the Stem: If you've pressed the detent correctly, the stem should slide out smoothly. Do not force it. If it doesn't come out easily, reposition the crown slightly and try again. Double-check that you are pressing the correct detent.
- Careful Handling: Once removed, handle the crown and stem with care. They are delicate.
Important Considerations:
- Different Movements, Different Mechanisms: The exact location and type of stem release mechanism vary between watch movements. Consult the service manual for your specific movement if you can find one.
- Force is a No-No: Never force the stem out. This can damage the setting lever or other components of the movement.
- Reinstallation: To reinstall the stem, align it with the movement and gently push it in until it clicks into place.
Video Example (from provided reference):
The provided reference mentions a Seiko 7009. While a still image, it emphasizes pulling the crown out further. Replacing the stem involves sliding it back in while wiggling it slightly, avoiding force.
