Seiko Cal. 5Y88A Parts Catalogue and Technical Guide
Comprehensive parts catalogue and technical service guide for the Seiko Cal. 5Y88A quartz movement, a three-function calendar module featuring date, day, and month displays. This workshop manual delivers detailed movement specifications alongside a fully annotated parts breakdown with numbered component references and exploded assembly views to support both technicians and skilled watchmakers. The guide covers complete disassembly and reassembly procedures, hand installation methods, and precise calendar wheel positioning protocols essential for accurate timekeeping. Lubrication mapping identifies all critical oiling points, while electrical value checking parameters provide reference data for coil block resistance and current consumption verification. Battery specification: SR916SW 1.55V, rated for approximately 3 years of normal service life. Movement dimensions: 24.0mm outside diameter, 3.05mm height. Supplementary technical notes address hand removal techniques, calendar mechanism assembly sequencing, and systematic value checking procedures to ensure proper movement function after maintenance or repair work.
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Document Details
- Format
- Pages
- 6
- Size
- 147.5 KB
- Category
- Watchmaking