Seiko 7D48 Technical Instruction - Calendar Circuit Assembly
Seiko 7D48 Technical Instruction for Calendar Circuit Assembly — comprehensive workshop manual covering the precise assembly sequence of the calendar mechanism. Details the step-by-step installation of the control jumper, ratchet lever, contact point spring, and connector components, with explicit positioning tolerances and engagement verification procedures. Includes color-coded mechanical diagrams for component orientation and assembly flow, lubrication schedules for pivots and guide slits to ensure smooth calendar operation, and quality assurance inspection checkpoints to confirm proper fit and alignment before closure. Essential service reference for technicians performing calendar circuit work on this movement.
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Document Details
- Format
- Pages
- 15
- Size
- 4.5 MB
- Category
- Watchmaking