Step 3: Cleaning and polishing
The watchmaker takes the timepiece apart and carefully cleans every individual component, down to the tiniest screw. The case and the metal watchband are polished by experienced polishers until they look as good as new. For this process, our experts are instructed by the manufacturers on how to correctly maintain the characteristic surfaces of the different brands and models.
Step 4: Assembly
As the watchmaker painstakingly reassembles the watch, he or she pays attention to maintaining the correct distances between the components and the right torque value of all the screws. New lubricants are also applied. Seals that have become brittle, as well as any damaged components, are replaced. Most components — gear wheels, tension springs, and crystals, for example — are available in our comprehensive replacement-parts warehouse, which is managed by two watchmakers and continuously replenished. Our watchmakers can repair and service one or two watches per day. Overhauling certain models may sometimes require as much as two days.
Step 5: Functional testing
After the watch has been completely assembled, all of its functions are thoroughly tested. The water-resistance of the watch must be checked, and the continuous perfect accuracy of the movement must be tested on an electronic timing machine. All of the switching procedures must function with total precision as well. It takes about one week to check whether the automatic winding mechanism works perfectly, test all the lubricated points, and make sure the date indicators are accurate. If the watch does not function perfectly, the watchmaker adjusts and regulates it once again. Finally, he or she writes a detailed log of the work that has been done and sends it to the local Wempe branch. This will serve as a good basis of information for all the servicing done on the watch in the future.