Introduction
This manual provides essential information for the Ewatchparts ETA 2836-2 automatic watch movement. This is a brand new, original Swiss-made movement featuring 25 jewels, automatic winding, and day-date complications. It is designed for watchmakers and enthusiasts for replacement or custom watch builds. Proper handling and installation are crucial for optimal performance and longevity.
Product Overview
The ETA 2836-2 movement is a robust and reliable Swiss mechanism. It features a mechanical self-winding system with a ball bearing, operating at 28,800 vibrations per hour (4Hz). The movement includes a white date wheel at the 3 o'clock position with black numbers, and a day wheel. It comes supplied with stems, an hour wheel, a dial ring, and two case clamps with screws.
Figure 1: Rear view of the ETA 2836-2 automatic watch movement, displaying the oscillating weight and intricate gear train.
Figure 2: Front view of the ETA 2836-2 movement, showing the day and date wheels, and the stem for setting.
Figure 3: Another front view of the ETA 2836-2 movement, highlighting the day and date indicators and the winding stem.
Technical Specifications
| Feature | Detail |
|---|---|
| Movement Type | Automatic, Mechanical Self-Winding |
| Jewels | 25 Jewels |
| Frequency | 28,800 vibrations per hour (4Hz) |
| Functions | Hours, Minutes, Central Seconds, Day, Date |
| Date Display | White date wheel with black numbers at 3 o'clock |
| Overall Diameter | 26 mm (11 1/2 Line) |
| Height | 4.6 mm |
| Included Components | Stems, Hour Wheel, Dial Ring, 2 Case Clamps, Screws |
| Weight | 2.08 ounces |
| Part Number | WP-72100 |
Installation Guidelines
Installation of a watch movement requires specialized tools and expertise. It is highly recommended that this movement be installed by a qualified watchmaker to ensure proper function and avoid damage. Incorrect installation can lead to irreparable damage to the movement or the watch case.
Key Considerations for Installation:
- Compatibility Check: Before installation, verify that the movement's dimensions (26mm diameter, 4.6mm height) and features (day/date position) are compatible with your watch case, dial, and hands.
- Handle with Care: Always handle the movement by its edges or with appropriate finger cots/gloves to prevent contamination from oils or dust. Use non-magnetic tools.
- Stem Installation: Carefully insert the winding stem into the movement. Ensure it clicks securely into place without excessive force.
- Dial and Hands: Attach the dial and hands with precision, ensuring they are properly aligned and clear of each other and the crystal.
- Securing the Movement: Use the provided case clamps and screws to secure the movement firmly within the watch case. Do not overtighten.
Video 1: A brief demonstration of a watch movement replacement process. This video provides a general overview and is not specific to the ETA 2836-2 movement, but illustrates the delicate nature of watch repair.
Operation
The ETA 2836-2 is an automatic movement, meaning it winds itself through the motion of the wearer's wrist. It also supports manual winding via the crown.
Setting the Time, Day, and Date:
- Manual Winding: In position 0 (crown pushed in), turn the crown clockwise to manually wind the movement. Approximately 20-30 turns will provide sufficient power reserve to start the watch.
- Setting the Date: Pull the crown out to position 1. Turn the crown clockwise or counter-clockwise to adjust the date. Avoid setting the date between 9 PM and 3 AM, as this is when the date change mechanism is engaged and could be damaged.
- Setting the Day: In position 1, turn the crown in the opposite direction from date setting to adjust the day.
- Setting the Time: Pull the crown out to position 2. The seconds hand will stop (hacking feature). Turn the crown to set the desired time. Push the crown back to position 0 to restart the seconds hand and engage the movement.
Care and Maintenance
To ensure the longevity and accuracy of your ETA 2836-2 movement, observe the following care and maintenance guidelines:
- Regular Servicing: Mechanical watch movements benefit from regular servicing, typically every 3-5 years, by a professional watchmaker. This includes cleaning, lubrication, and adjustment.
- Avoid Shocks: While robust, the movement is a precision instrument. Avoid dropping the watch or subjecting it to severe impacts.
- Magnetic Fields: Keep the watch away from strong magnetic fields (e.g., speakers, refrigerators, certain electronic devices) as magnetism can affect timekeeping accuracy.
- Water Resistance: The movement itself is not water-resistant. Its water resistance depends entirely on the watch case it is installed in. Ensure the watch case is properly sealed after installation.
- Temperature Extremes: Avoid exposing the watch to extreme temperature fluctuations, which can affect lubricants and metal components.
Troubleshooting
If you encounter issues with your watch movement, consider the following common problems and solutions:
- Watch Not Running:
- Ensure the movement is sufficiently wound. Manually wind the watch by turning the crown clockwise for 20-30 rotations.
- If the watch has been stationary for an extended period, gently rock it side-to-side to engage the automatic winding rotor.
- Inaccurate Timekeeping:
- Check for magnetism. If suspected, a watchmaker can demagnetize the movement.
- The movement may require servicing (cleaning and lubrication).
- Severe impacts can affect accuracy; consult a watchmaker for inspection.
- Day/Date Not Changing or Stuck:
- Ensure the time is not set between 9 PM and 3 AM when attempting to quick-set the day/date. Advance the time past 3 AM before adjusting.
- If the issue persists, it may indicate a mechanical fault requiring professional attention.
For any persistent or complex issues, it is always best to consult a professional watchmaker.
Warranty and Support
Quality Assurance: Each watch movement is carefully tested and inspected prior to shipping to ensure accurate timekeeping and reliable performance. Ewatchparts takes extra steps to verify functionality.
Returns and Exchanges: Please note that there are no returns or exchanges on watch movements once they have been purchased. This policy is in place due to the delicate nature of watch movements and the potential for damage during handling or improper installation.
Product Warranty: For warranty information about this product, please refer to the specific warranty details provided at the time of purchase or contact Ewatchparts directly. General warranty information can often be found via the provided link: Product Warranty Information.
Contact Support: For further assistance or inquiries, please visit the Ewatchparts Store on Amazon: Visit the Ewatchparts Store.