This time I did a full restoration of this brocken citizen promaster dive watch automatic. the movement was a miyota cal. 8200A equavalent to cal. 8205 ref. NY0040
This watch was severly damaged! the palletfork was not engaging with escape wheel. Glass and the bezel had many scratches and I had to change them both!
1977 Citizen launched his most successful series of 11 1/2 line mechanical movements, the 8200 calibre series. The maximum version with automatic winding, date and day of the week display was the Citizen 8203A calibre. It was later replaced by the practically identical Miyota 8205.
Even with the base board it becomes clear that this movement is designed for durability, every bearing, with the exception of the barrel, has a bearing block, cover stones do not exist except for the balance bearings.
The complete gear train, including the automatic movement and the lock, is mounted under a single large wheelhouse bridge. Only the minute tube got its own small bridge, because the indirectly driven central second drive goes through the minute tube as usual.
Half vibrations per hour: 21600
Number of stones: 21
Shock protection(s): Parashock 1 (Citizen)
0:00 intro
4:35 Striping down the movement
7:39 washing the parts
9:05 Polishing the case
10:25 Assembling the movement
12:04 Oiling the incabloc jewel
15:35 Timegrapher
16:22 waterproof test with bergeon 5555
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Consumables:
- Cleaning Rodico, Bergeon 6033: www.amazon.com/-/de/dp/B07NRH...
- Finger Cots Anti Static Medium: amzn.to/2K8Yzjt
Equipment:
- Soft Anti-Skid Bench Mat, Bergeon 7808-V: amzn.to/35GPFCo
- Soft Gel Casing Cushion 75 mm, Bergeon 5395-75: amzn.to/2IN2q5x
- Movement Dust Cover Storage Box: amzn.to/3m3OIJ9
Tools:
- Glas Removal Tool (Bergeon Replica): amzn.to/32Z2V3g
- Glas Removal Tool, Bergeon 4266: ebay.us/K9oToI
- Red Cleaning Stick, Bergeon 6436: amzn.to/35CJnn8
- Spring Bar Removal Tool, Bergeon 3153: amzn.to/3kIVS4G
- Anti-Magnetic Tweezer, Dumont N°1: amzn.to/3fc52G4
- Large Extensible Movement Holder, Bergeon 4040-P: amzn.to/3pCgoHX
- 9 Ergonomic Screwdrivers with spare blades, Bergeon 6899-S09: amzn.to/2HbAXJW
- 12 Swiss Made Screwdrivers With Rotating Stand, Horotec MSA01.205: ebay.us/eD1EX2
- Finger Cots Anti Static Medium: amzn.to/2K8Yzjt
Equipment:
- Soft Anti-Skid Bench Mat, Bergeon 7808-V: amzn.to/35GPFCo
- Soft Gel Casing Cushion 75 mm, Bergeon 5395-75: amzn.to/2IN2q5x
- Movement Dust Cover Storage Box: amzn.to/3m3OIJ9
Tools:
- Glas Removal Tool (Bergeon Replica): amzn.to/32Z2V3g
- Glas Removal Tool, Bergeon 4266: ebay.us/K9oToI
- Red Cleaning Stick, Bergeon 6436: amzn.to/35CJnn8
- Spring Bar Removal Tool, Bergeon 3153: amzn.to/3kIVS4G
- Anti-Magnetic Tweezer, Dumont N°1: amzn.to/3fc52G4
- Large Extensible Movement Holder, Bergeon 4040-P: amzn.to/3pCgoHX
- 9 Ergonomic Screwdrivers with spare blades, Bergeon 6899-S09: amzn.to/2HbAXJW
- 12 Swiss Made Screwdrivers With Rotating Stand, Horotec MSA01.205: ebay.us/eD1EX2
11 июл 2024
