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—Step 01
Diagnostic
A specialist watchmaker analyses the reason for which the watch has been submitted for maintenance and identifies the watch from its unique serial number.
—Step 02
Case disassembly
Disassembly of the case and its components (glass, back, bezel, various seals, etc.) and separation of the movement.
—Step 03
Movement disassembly
Full part-by-part disassembly of the movement.
—Step 04
Case polishing
Polishing of the case to restore the original luster to a watch that has been worn for some time.
—Step 05
Case cleaning
Cleaning of the case in special baths used for ultrasound treatment.
—Step 06
Preparing the components of the movement for cleaning
Each component of the disassembled movement is placed in containers specific to small watch parts.
—Step 07
Movement cleaning
These containers are in turn placed in specific baths inside an ultrasonic cleaning machine.
—Step 08
Case reassembly
Reassembly of the case and replacement of the necessary components (glass, pushers, tube, seals, etc.).
—Step 09
Movement reassembly
Reassembly and oiling of movement to Longines specifications.
—Step 10
Installation of case and movement
Assembly of movement (including dial and hands) in the case and complete reassembly of the watch.
—Step 11
Technical and cosmetic checks
Final technical (precision, power reserve, water resistance) and cosmetic checks on the watch, according to Longines specifications.