We all know that inside the watch maintenance, the most important thing is the movement maintenance.
With the improvement of everyone’s aesthetic taste and the improvement of economic strength, many friends chose to start from the 2892 movement when choosing the first watch. But after the repair and maintenance, it is not easy. After your love watch is sent to the repair center, the correct treatment method, and ultimately these 10 steps, you may wish to serve as a reference for future maintenance.
The cleaning of the outer casing is usually carried out by ultrasonic cleaning to remove residual stains that are invisible to the naked eye; in addition, the flexibility of the movable outer ring is ensured. For the silicone grease consumed by the snap, the head, and the bottom cover, add an appropriate amount and replace the aging waterproof rubber ring to ensure the waterproof effect.
Movement removal and assembly
The handling of the movement is the top priority in maintenance and can be divided into three modules: disassembly, washing, and loading. “Removing” means checking the parts in question, replacing worn parts and screws with residual deformation. When “washing”, you need to use 120# solvent gasoline, after two washing and bleaching steps, and then carefully check the residual stain with 10 times the lens, check whether the gemstone eye is bright, whether the shaft is bright or not, and finally put it. When the oven is dried at 50 degrees, the movement will become as clean as new.
“Loading” is the assembly. During the assembly process, the watchmaker needs to ensure that the movement 6 large wheel train runs smoothly and smoothly. It is required that the drive train wheel is flat, the transmission is smooth, and there is a gap in the axial direction to ensure that the idling has a swirl; the original motion system can completely release the spring power, and does not slip when the spring is tightened; and the core component of the movement is delayed. It is necessary to ensure that the bouncer’s bounce is powerful, the balance wheel is flexible, the balance spring is flat and the frame is fine, and the fine adjustment screw is in the middle effective section; the clockwork pin is tied to the upper and the needle when the needle is tight, the gear position is obvious, and the rest is accurate. The automatic winding system, you need to ensure that the automatic tow can be freely loaded after the full line, there will be no teeth and flywheel phenomenon when manually winding; the last calendar is to check the confirmation date is powerful and accurate, not allowed to jump half or A slow-jumping calendar appears.
Refueling is not a washing oil, nor is it just adding a single oil. There is a strict regulation on the amount of oil and what part of the oil is added. The added “oil” is generally the following four types: ointment, heavy oil, thin oil, horse fork oil. The amount of oil should not be higher than 1/2 of the stone bowl. The shaft of the bowl does not hang oil, and the parts must not have oil except the contact surface, so as to ensure the lubrication and beauty of the parts. For special brand requirements, you have to follow the brand requirements.
For maintenance, the adjustment of the four orientations has ensured the accuracy of the travel time. The requirement is that the face and face hem of the watch should reach 280 or more. When the 3, 6, and 12 words are downward, the swing should be above 260. Within 10 seconds, within 0.2 polarization, the lines are compact and clear.
The literal surface cannot be offset, the three stitches are equal to the parallel spacing of the words, and the difference between the time and the minute is not more than 3 points, and the change is completed by 45 minutes to 0 points. The entire literal processing is done: the needle is dust-free, no new scratches or fingerprints. The new watch should be free to disassemble. These seemingly trivial things, but all require the watchmaker to have a high degree of professionalism and patience.
Movement assembly inspection
When tightening the screws, it is necessary to strictly follow the size of the screwdriver and the screw to ensure that the screw holes cannot be scratched, the screw head cannot be scratched, and the splint is clean and dust-free.
Coming to the husking step means that the assembly on the hardware is about to be completed. When installing the shell, ensure that the device for fixing the casing is stable and effective. Align the core with the tube, and the offset should not occur. The second hand should have a safe distance from the cover. The automatic turret does not scratch the case back cover, and the bottom cover screw has no stains. Screw in smooth and seamless.
For waterproof ones, watchmakers with professionalism and responsibility during maintenance often leave room for the waterproof ability of the watch. As much as possible to ensure that the watch can have, even slightly improve the waterproof ability.
Finally, the watch is placed on the autobiography to check whether the watch can guarantee perfect operation for more than 36 hours under the condition of rotation.
Whole shell inspection
The inspection of the whole shell is the last step in the return of the watch to the customer. Although it is almost finished, it must be confirmed that the watch case and the strap are clean. Check again whether the bottom cover is tight and seamless, and whether the ear cover is tight. Sticking head, whether the snap switch is safe and easy to operate, the needle on the head is moderately strong, and there is no deformed ear.