Chronographs - Module1: Eta7750

Instructor: Master Paulo Anastácio

Capacity : 8

Duration: 20 hours

PROGRAM

• Introduction to the ETA 7750 Chronograph:
  • Historical evolution of the Valjoux 7750;
  • Structure and complexity of the mechanism.

• Analysis of Supporting Documentation:
  • Technical communication;
  • Sequential assembly and disassembly plans;
  • ETA Swisslab application.

• Preparation for Maintenance:
  • Demagnetizing the movement before disassembly;
  • Initial gear check, search for apparent defects;

• Dismantling the Double Calendar
• Disassembly of the chronograph, dial side.
• Disassembly of the Automatic Mechanism
• Disassembly of the chronograph, bridge side
• Disassembly of the Main Mechanism
• Correction of identified defects.
• General Cleaning of the Movement
• Assembly and Lubrication of the Base Movement
  • Initial adjustment

• Chronograph Assembly and Lubrication, Bridges Side
• Automatic Transmission Assembly and Lubrication
• Chronograph settings:
  • Adjusting the penetration of the chronograph clutch wheel;
  • Tuning the Minute Counting Wheel Jumper;
  • Tuning of the Passage and Jump of the Balador;

• Chronograph Assembly, Dial Side
• Double Calendar Assembly
• Final Regulation
• Oscillating Mass Assembly
• Autonomy Tests
• Assessment

Tools

Trainees will receive a toolkit that includes all the specific tools needed to work with the 7750 movement, essential for this training.

Offer of a time comparison tool to the trainee.