Seiko 5Y22A-5Y39A Parts Catalogue and Technical Guide
Comprehensive parts catalogue and technical service manual for Seiko quartz watch movements Cal. 5Y22A, 5Y23A, 5Y30A, 5Y31A, 5Y32A, and 5Y39A. Provides detailed movement specifications including physical dimensions (outside diameter Ø24.0–Ø25.4 mm, casing diameter Ø23.3 mm, height 2.1–2.7 mm), time display configuration in 2 or 3 hands, step motor drive system architecture, integrated date and day calendar functions, and instant calendar adjustment mechanism. Battery specifications cover multiple compatible sources (SEIKO SR920SW, Maxell SR920SW, EVEREADY 371, SONY SR920GW, Matsushita SR920SW) rated at 1.55V with approximately 3 years service life. Includes step-by-step disassembly and reassembly procedures for Cal. 5Y31A movement, supported by an exploded parts diagram with complete identification and reference numbers for every component. Lubrication section details correct application of Moebius A and SEIKO Watch Oil S-6 to ensure proper movement operation and longevity. This workshop manual is essential reference material for watch technicians performing maintenance, repair, or regulated assembly work on these movements.
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Document Details
- Format
- Pages
- 7
- Size
- 275.9 KB
- Category
- Watchmaking