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This is a generic silver crown designed for Rolex Submariner and Daytona references, compatible with models including 116610, 126610, and 116500LN . It measures 7.03mm in diameter and 4.2mm in height, with part reference B24-703-0.
Featuring a screw-down design for water resistance, this aftermarket replacement crown restores proper winding, time-setting, and date functions when the original becomes worn or damaged. The 7.03mm size is typical for modern Rolex Oyster cases with 100m-300m water resistance .
Screw-Down Crown Operation:
The Rolex Oyster case features a screw-down crown for water resistance. Proper operation is essential :
| Position | Crown State | Function |
|---|---|---|
| Position 0 | Screwed down (tightened) | Normal running position, maximum water resistance |
| Position I | Unscrewed, not pulled | Manual winding (turn clockwise) |
| Position II | Unscrewed, pulled to first stop | Quick-set date adjustment (Submariner) |
| Position III | Unscrewed, pulled to second stop | Time setting (hack feature stops seconds hand) |
Important Usage Guidelines :
Before pulling the crown: Always unscrew the crown counter-clockwise first. Never pull a screw-down crown without unscrewing—this can damage the setting mechanism.
After making adjustments: Push the crown back to the closed position, then screw it clockwise until fully tightened to maintain water resistance.
Water resistance reminder: The watch is NOT water-resistant when the crown is in the unscrewed position. For Submariner (300m) and Daytona (100m), proper tightening is critical.
Manual winding: In the unscrewed Position I, turn the crown clockwise approximately 20-30 turns for a full wind .
Tools Required:
Case back opener
Pin vise or spring bar tool
Non-metallic tweezers
Small screwdriver (for movement release)
Silicone grease (for crown gasket)
Digital caliper (for verification)
Step-by-Step Installation:
Step 1: Remove the Old Crown
Open the case back using an appropriate case back opener
Locate the crown release mechanism on the movement (press the button near the stem)
Gently pull the crown and stem out of the movement
If the old crown is damaged, unscrew it from the stem using a pin vise
Step 2: Separate Crown from Stem (if applicable)
Most crowns screw onto the stem via internal threads
Hold the stem securely using a pin vise and unscrew the old crown
Clean the stem threads to remove any debris or old adhesive
Step 3: Prepare the New Crown
Verify the new crown‘s dimensions (7.03mm diameter) match the original
Apply a small amount of silicone grease to the crown’s rubber gasket
Step 4: Install the New Crown
Screw the new crown onto the stem by hand, turning clockwise
Do not over-tighten – snug fit is sufficient
Reinsert the stem with the new crown into the movement until the release mechanism clicks into place
Step 5: Function Testing
Test all crown positions (winding, date setting, time setting)
Ensure the crown pulls out and pushes in smoothly without binding
Verify the seconds hand stops when crown is in position III
Step 6: Water Resistance Testing
After installation, professional water resistance testing is strongly recommended
Submariner (300m) and Daytona (100m) require proper sealing for water resistance
Important Notes:
Rolex recommends using specialized tools and correct operation methods when replacing crowns
Always use a new gasket when replacing the crown to ensure proper sealing
Professional installation is strongly recommended for those without watch repair experience
Common Symptoms Indicating Crown Replacement is Needed:
| Symptom | Possible Cause |
|---|---|
| Crown feels loose when turning | Worn internal threads or stripped stem |
| Crown pulls out without clicking | Worn setting lever or release mechanism |
| Crown spins without winding | Stripped stem threads or worn crown |
| Difficulty winding | Worn crown or stem threads |
| Water enters watch after exposure | Failed crown gasket |
Diagnostic Process:
Visual Inspection: Under magnification, inspect the old crown and stem for stripped threads, bent stem, or damaged gasket.
Stem Inspection: If the stem threads are damaged, the stem must also be replaced. A new crown will not function properly on a damaged stem.
Case Tube Inspection: Check the case tube (where the crown seats) for damage or corrosion.
When Replacement is Necessary:
Visible thread damage or stripping
Crown no longer screws down smoothly
Gasket is cracked, hardened, or missing
Visible damage to the crown finish or structure
Preventive Maintenance:
Replace crown gasket every 3-5 years during regular service
Avoid over-tightening the crown
Always unscrew before pulling – never force the crown
Rinse the watch with fresh water after saltwater exposure before operating the crown
When to Seek Professional Help:
The stem is broken or stuck inside the movement
The case tube is damaged or corroded
The movement has additional issues (e.g., broken setting lever)
You lack proper tools or experience
The watch has significant monetary or sentimental value
Q1: What models is this crown compatible with?
A: This crown is designed for Rolex Submariner references 116610 and 126610 (40mm/41mm, 300m water resistance) and Daytona reference 116500LN (40mm, 100m water resistance) . Always verify your original crown dimensions (7.03mm diameter) before purchasing.
Q2: Does the crown need to be screwed down for water resistance?
A: Yes. Both Submariner and Daytona use screw-down crown systems for water resistance. When the crown is in the unscrewed position, the watch is not water-resistant. Always screw the crown down tightly after making adjustments. The Submariner is rated for 300m water resistance, while the Daytona is rated for 100m .
Q3: What is the difference between the Submariner 116610 and 126610 crowns?
A: Both references use the same 7.03mm crown size. The main differences between the models are: 126610 has a slightly larger 41mm case (vs 40mm on 116610), updated Caliber 3235 movement with 70-hour power reserve (vs 48 hours on 3135), and a redesigned bracelet with wider center links. The crown size remains the same .
Q4: Can I install this crown myself?
A: If you have experience with watch repair and the proper tools (case opener, pin vise, etc.), installation is possible. However, Rolex crowns are precision components, and improper installation can damage the movement or compromise water resistance. Professional installation is strongly recommended for most users.
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