Seiko 2906A Caliber Movement Parts List
Comprehensive parts list and technical reference for the Seiko 2906A automatic movement, a 17-jewel caliber housed in an 18mm diameter case. This service manual documents complete movement specifications, including maximum height of 8.35mm and operating frequency of 19,800 beats per hour. Detailed numbered component diagrams identify every element of the movement assembly: barrel, gear train, escape wheel, balance assembly, calendar mechanism, and case components. The guide covers all functional features including automatic winding with manual auxiliary winding capability, sweep second hand, day and date calendar system, instant date-setting device, bilingual changeover mechanism for weekday selection, and Diashock shock protection. Technical remarks address dial construction, day indicator disk assembly, dial retention ring specifications, and case screw fastening details. An essential reference for watchmakers performing maintenance, repair, or complete overhaul of this classic Seiko caliber.
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Document Details
- Format
- Pages
- 6
- Size
- 339.6 KB
- Category
- Watchmaking