In this second installment of our guide to watch maintenance, we take a look at what exactly a complete watch overhaul entails.
What does an overhaul include?
It varies from manufacture to manufacture and from one service center to another, but the fundamentals are pretty consistent: A watch technician (also commonly called a “watchmaker,” though in this case he’s inspecting and repairing it) will take the following steps:
Bracelet removal
Case opening
Diagnose the movement
Check the workings using testing devices
Check the functions of the movement (tests of the time setting and pushers: start/stop/reset)
Perform an overall visual inspection
Demagnetize (if it’s suspected of being magnetized)
Offer an estimate (sometimes you’ll receive an estimate while you wait; in other cases, someone will phone or e-mail you a few days after you bring your watch in. Either way, they’ll tell you which services are necessary and which are optional.)
Once you agree to the estimate, the watchmaker will proceed with the following:
Complete case dismantling (bezel, crystal, pushers)
Case and bracelet cleaning in ultrasonic vibration for one hour
Replacement of all gaskets
Dismantling and cleaning of components
Replacement of worn components
Assembly and lubrication of the movement components
Regulation of the function
Precision control of the movement
Check of the functions of the movement (tests of the time setting and pushers: start/stop/reset)
Polishing of the case
Complete reassembly of the case
Case closing and locking of the case back
Next, the watchmaker will run quality-control tests to ensure that your watch is working at its maximum operational standards:
Water-resistance test according to model specifications
Hour and date setting
Final check of the movement and all functions over 72 hours in several positions
Bracelet refitting with replacement of spring bars
Check and adjustment of the clasp
Final inspection
If you’re looking for a visual reference of the process described above, we filmed one of our watchmakers in action. Check it out here.
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