The Rolex Oyster Perpetual, a cornerstone of the brand's renowned reputation for quality and durability, is celebrated for its water resistance. However, issues can arise, and one frequently reported problem is the inability to screw down the crown properly. This article delves into the reasons behind this frustrating issue, explores different scenarios, and offers advice on troubleshooting and preventative measures. We'll examine the specifics of Rolex's Triplock crown system, address common misconceptions, and provide guidance on proper crown handling techniques.
Crown Not Completely Screwed Down:
The most common reason a Rolex Oyster Perpetual crown won't screw in is simply that it's not properly aligned or hasn't been screwed down fully. The crown's threads are delicate, and even a slight misalignment can prevent it from engaging correctly. This often occurs when the crown is pushed in before the threads have properly engaged. The feeling should be smooth and consistent, with a distinct click at each turn. If you feel resistance or a grinding sensation, stop immediately and try again, ensuring the crown is correctly aligned with the crown tube.
A partially screwed-down crown leaves the watch vulnerable to water ingress, even if the watch is rated for significant water resistance. The Triplock system, while robust, relies on the crown being fully screwed down to create a hermetic seal. A partially screwed crown might lead to moisture entering the case, potentially damaging the movement.
So Does a Crown Need to be Screwed In or Not?
This is a crucial point of understanding. Rolex's own website states that their Triplock crown system, used in many Oyster Perpetual models, is rated to 500 bar (approximately 7,250 psi) *with the crown unscrewed*. This might seem counterintuitive. However, this rating refers to the inherent water resistance of the case itself, the gaskets, and the crystal. The crown's unscrewed position is acceptable for brief splashes or light rain but offers no significant protection against submersion. The 500-bar rating with the crown unscrewed is a testament to the overall design's robust construction. However, to ensure full water resistance as advertised (typically 100m or more), the crown *must* be fully screwed down. Leaving it unscrewed significantly compromises this water resistance, increasing the risk of damage.
What is the Preferred Technique for Screwing Down a Rolex?
The correct technique is essential for maintaining the integrity of the crown and the watch's water resistance. Here's a step-by-step guide:
1. Ensure Clean Hands: Dirt or debris can interfere with the crown's threads. Clean your hands thoroughly before handling the crown.
2. Gentle Pressure: Avoid excessive force. Apply gentle, consistent pressure while turning the crown clockwise. Don't force it if it feels resistant.
3. Feel the Clicks: You should feel distinct clicks as the crown screws down. Each click indicates a complete rotation. The number of clicks varies depending on the model, but typically ranges from two to three.
4. Firmly Secured: Once fully screwed down, the crown should be firmly secured and flush against the case. There should be no discernible play or looseness.
5. Regular Checks: It's good practice to periodically check the crown to ensure it's securely screwed down, especially after exposure to water or any potential impact.
My Crown Won’t Screw Back In? Any Suggestions?
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