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How do I open a Timex watch?

Published in Watch Repair 3 mins read

Opening a Timex watch depends on the type of case back it has. Here's how to approach opening most common Timex watch case backs:

1. Identifying Your Case Back Type:

  • Snap-Off/Pop-Off Back: This is the most common type, especially on Timex Weekender models. These have a small indentation or lip somewhere around the edge of the case back.
  • Screw-Down Back: These have a series of small notches or slots around the edge of the case back, indicating it screws in.
  • Screw-In Back with Polygonal Shape: Some Timex watches have a screw-in caseback with a polygon (e.g., hexagon) shape.

2. Opening a Snap-Off/Pop-Off Case Back:

  • Tools: You'll need a case knife or a thin, sturdy flat-head screwdriver. Avoid using a sharp knife as you might damage the case or injure yourself.
  • Procedure:
    1. Locate the indentation/lip: Examine the edge of the case back to find the small indentation.
    2. Insert the tool: Carefully insert the tip of the case knife or screwdriver into the indentation.
    3. Pry Gently: Gently pry the case back upwards. Work your way around the case back, if necessary, until it pops off. Be patient and avoid excessive force to prevent damage.
    4. Protect the surface: Place a piece of tape on the case near the indentation to help prevent scratches.

3. Opening a Screw-Down Case Back:

  • Tools: A case back removal tool or adjustable case wrench is ideal. Some can be opened with a pair of pointed tweezers, but this carries a higher risk of scratching the watch.
  • Procedure:
    1. Secure the Watch: Place the watch in a watch vise to hold it securely. This prevents slipping and scratches.
    2. Position the Tool: Adjust the case wrench so the prongs line up with the notches on the case back. Alternatively, carefully position your tweezers into two opposing notches.
    3. Unscrew the Case Back: Rotate the tool counter-clockwise to unscrew the case back. Apply even pressure and avoid forcing it.
    4. Remove the Back: Once unscrewed, carefully lift off the case back.

4. Opening a Screw-In Case Back with Polygonal Shape:

  • Tools: You'll need a socket wrench or case wrench with appropriate bit that matches the polygon shape on the caseback.
  • Procedure:
    1. Secure the Watch: Place the watch in a watch vise.
    2. Fit the Socket: Position the socket wrench or appropriate tool onto the case back.
    3. Unscrew the Case Back: Turn the wrench counter-clockwise to unscrew the case back.

Important Considerations:

  • Water Resistance: Opening a watch compromises its water resistance. After closing the case back, it's advisable to have it pressure-tested by a professional if water resistance is crucial.
  • Seals: If the watch has a rubber gasket or seal around the case back, inspect it for damage and replace if necessary to maintain water resistance.
  • Battery Replacement (Common Reason to Open): For Timex Weekender watches with snap-off backs, the battery is typically a CR2016 3-volt battery.

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