Expert Care for Your Iconic Chronograph
Seiko Quartz Chronograph Service: The Seiko Cal. 7A28 is a standout in the world of quartz chronographs, known for its pioneering integrated circuit and quartz oscillator. We offer Seiko Quartz Chronograph Services for various calibres. However we regularly work with these Seiko calibre 7A28 timepieces. We offer precise and reliable servicing to keep them running at their best. Whether it’s a well-loved vintage 7A28 or a newer model Seiko Chronograph, each watch is handled with the utmost care and expertise.
Disassembly and Thorough Cleaning – Seiko Quartz Chronograph Service
The first step in servicing a Seiko Cal. 7A28 is carefully disassembling the movement. Each component, including the chronograph mechanism, gears, and circuit, is removed for a detailed cleaning. Manual cleaning is performed to remove accumulated oils, dust, and debris. By pegging the jewels and pivot holes, we ensure any hardened oils or contaminants are dislodged, preventing them from impeding the movement’s function. This cleaning process is essential for the continued accuracy of the timekeeping and chronograph functions.
Multi-Stage Cleaning Process – Seiko Quartz Chronograph Service
Once the parts are manually cleaned, we proceed with a more thorough cleaning using our rotary watch parts cleaning machine. This advanced, multi-stage cleaning process includes a cleaning solution followed by three rinsing stages. This ensures that each component is impeccably clean and free of any residue. The parts are then dried with care, ensuring no moisture remains before reassembly.
Inspection and Reassembly – Seiko Quartz Chronograph Service
After cleaning, every part is closely inspected for wear and functionality. The Seiko 7A28 is known for its robust design, but even the most durable components occasionally need attention. New parts are fitted as necessary, ensuring the movement is restored to optimal condition. Once the inspection is complete, the movement is reassembled with precision to ensure perfect alignment and smooth functionality.
Following reassembly, the movement is left to run for 24 hours to confirm that it is performing accurately. This running test allows us to address any final adjustments before the watch is fully reassembled.
Case Restoration and Dial Reassembly – Seiko Quartz Chronograph Service
The watch case is cleaned in an ultrasonic cleaner to remove dirt and oils that may have built up over time. Depending on the condition of the case, it may undergo gentle polishing to restore its shine, while maintaining the integrity of the original finish. All cases are fitted with new gaskets throughout to ensure water resistance, and we perform a pressure test to confirm that it meets the manufacturer’s case specifications. If necessary, a new crystal is installed to ensure a clear view of the dial.
Once the case is ready, the dial and hands are carefully reattached. Great attention is given to their alignment and condition, ensuring the timepiece retains its aesthetic appeal and continues to function like new.
Final Testing and Assurance – Seiko Quartz Chronograph Service
Before returning the Seiko Cal. 7A28 to its owner, we conduct a rigorous five-day testing period. This ensures that the chronograph and timekeeping functions are accurate and reliable. Only after passing these final tests is the watch returned, fully restored and ready for continued use.
Stay Connected and Get in Touch
If you have a Seiko Cal. 7A28 in need of servicing, don’t hesitate to contact us. We are experts in maintaining and restoring these iconic chronographs to ensure they continue to perform at their peak.
For more updates on the work we do, follow us on Facebook, where we frequently share additional insights and showcase other jobs on the bench that might not make it to the blog. Stay informed and connected with the world of fine watch servicing! A more chronograph services an repair see the Gen 1 Military Seiko Chronograph or for automatic chronographs see Blue Pogue or Darth Vader (Helmet).
0 Comments