Credor Cal. 4S77A Movement - Parts Catalogue and Technical Guide
Complete parts catalogue and technical workshop guide for the Seiko Credor Cal. 4S77A automatic movement. This service manual provides detailed specifications, exploded diagrams with numbered part identification, step-by-step disassembly and reassembly procedures, hand installation instructions, calendar mechanism setting positions, and comprehensive component lists covering jewels, screws, and pins. The movement operates at 28,800 vibrations per hour with 28 jewels and dual calendar display showing both date and day of week. An essential reference for watchmakers and technicians servicing this precision automatic caliber.
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Document Details
- Format
- Pages
- 16
- Size
- 1.6 MB
- Category
- Watchmaking