How to disassemble a watch movement: detailed professional steps and precautions
In the past 10 days, the topics of watch repair and DIY have become increasingly popular on social platforms, and tutorials on disassembly of mechanical watch movements have become the focus of searches. This article will present the professional disassembly process in a structured manner, along with key tools and risk data sheets to help enthusiasts operate safely.
1. List of necessary tools for disassembling the movement
| Tool name | Purpose | Frequency of use |
|---|---|---|
| Movement holder | Stable movement position | ★★★★★ |
| Antimagnetic tweezers | Gripping tiny parts | ★★★★★ |
| screwdriver set | Remove screws of different specifications | ★★★★☆ |
| eyepiece magnifying glass | Observe precision structures | ★★★☆☆ |
| Parts storage box | Classified storage components | ★★★★☆ |
2. Standardized dismantling process
1.Preparation: Choose a dust-free environment, wear an anti-static bracelet, and arrange all tools in the order of use.
2.Separate case: When using a meter opener to remove the back cover, pay attention to the pressure scale (usually no more than 3N·m).
3.Demotivate: Release the spring tension first to avoid sudden popping and causing parts to fly away.
4.Modular disassembly: Decomposed in the order of transmission system → escapement system → balance wheel group, and each step will be photographed and recorded.
3. Statistics on high-frequency mistakes
| Wrong operation | cause consequences | probability of occurrence |
|---|---|---|
| Violently pry open the back cover | Case deformation/glass breakage | 43% |
| Part location not marked | Assembly order is confusing | 67% |
| Touching gears with bare hands | Oil film contamination/oxidation | 35% |
| Use non-special tools | Screw slip/part damage | 58% |
4. Core points of movement reorganization
1.Lubrication: Refer to the schematic diagram of lubrication points of each brand, use Moebius special oil, and control the dosage to 0.1mm diameter oil droplets.
2.Escapement Calibration: The balance spring needs to be tested with a calibration instrument after installation, and the daily difference should be adjusted to within ±15 seconds.
3.stress test: After assembly, a 3Bar waterproof test is required (for waterproof watches).
5. Risk level assessment
| Operation stage | risk index | Things to note |
|---|---|---|
| Remove the crown | ★★★☆☆ | Prevent the stem from breaking |
| Handling hairspring | ★★★★★ | Disable contact with metal tools |
| Install gem bearings | ★★☆☆☆ | Keep vertical force |
According to the latest survey from the Watchuseek forum, 78% of DIY failure cases are caused by ignoring basic steps. It is recommended to choose standardized movements such as ETA 2824 for the first disassembly exercise. Complex movements such as Rolex 4130 require professional training. If you encounter resistance during disassembly, stop immediately and consult a professional.
check the details
check the details
en
