Seiko Cal. 5Y86A Parts Catalog and Technical Guide
Seiko Cal. 5Y86A parts catalog and technical service guide for the 24.0mm quartz watch movement. This workshop manual provides everything needed for authorized service and repair, including complete movement specifications, exploded diagrams of front and rear assemblies, comprehensive parts list with Seiko part numbers, step-by-step assembly procedures, and detailed lubrication charts. The 5Y86A features a stepper motor with load-compensated driving pulse, dual date and day calendar displays, and an electronic reset switch. Includes electrical test specifications for coil block resistance and current consumption measurements, along with critical disassembly and reassembly notes for technicians. An essential reference for Seiko service centers and experienced watch repair professionals.
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Document Details
- Format
- Pages
- 5
- Size
- 145.2 KB
- Category
- Watchmaking