Last year I have developed quite a fondness of 60’s Citizen watches! A customer has sent in his Seven star cal 5270 that needs a routine service.
Watch is preforming well, but is dry.
This Citizen has a sophisticated automatic movement.
I remove the oscillating weight. You can see some nasty grease in the upper barrel arbour.
I remove the hands and dial. Here you can see the date and day disks.
Removing the day disk reveals the complicated date/day/winding mechanism.
I start taking the base movement apart.
Here you can see the gear train layout.
All the parts taken out and cleaned.
I see that the balance moves freely.
I have cleaned and lubricated the old mainspring.
I start putting the movement back together.
After fitting the gear train I start fitting the setting mechanism.
Balance back in place and it’s running again.
Date/day mechanism back in place only missing the day disk.
Movement ready for dial and hands.
Hands and dial back on the movement.
Movement back in the case. You can actually see the upper barrel arbour jewel now.
I fit the autowinder mechanism.
Watch is running like it should.
Great watch with a great movement! The finish is decent, but you can see the focus was on the technical aspects and not decoration.