Seiko Cal. 2B31A Parts Catalogue and Technical Guide
Seiko Cal. 2B31A parts catalogue and technical guide for quartz watch movement servicing. Specifications document a 13.0–15.5 mm outside diameter, 15.1 mm casing diameter, and 2.4 mm movement height, with 3-hand time indication driven by step motor and electronic circuit reset switch architecture. The guide includes train wheel setting device details, 1 jewel bearing configuration, and a comprehensive exploded-view diagram with all numbered parts for reference during workshop repair. Disassembly and reassembly procedures are fully documented with precise lubrication schedules using Moebius A and SEIKO Watch Oil S-6, making this an essential service manual for technicians working on this movement in professional repair environments.
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Document Details
- Format
- Pages
- 5
- Size
- 131.3 KB
- Category
- Watchmaking