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PC-Magician

Seiko 7005A Service Part 2

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Following on from part one of my post on the Seiko cal 7005A service.

The motion side.

Balance removed and second reduction wheel.

 

36.jpg

Second reduction wheel.

37.jpg

Pallet fork and cock removed.

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Ratchet wheel needs to come off.

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Barrel and train wheel bridge removed.

 

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Click removed.

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Click.

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Sweep second wheel off.

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Barrel off.

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third wheel off.

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Escape wheel off.

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Escape wheel.

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Centre Wheel Bridge comes off (One screw)

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Centre wheel lifts off.

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Mainplate motion side now empty.

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All parts will be cleaned using a 4 stage system but first I need to take apart the barrel and train wheel bridge.

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I use a poly bag to protect the plate as I remove the C-Clip.

 

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All apart a simple but effective mechanism.

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Part 3 the rebuild to follow.

 

 

 

 

Edited by PC-Magician
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4 minutes ago, PC-Magician said:

Did it need any parts?.

This one doesn't appear no need any.

yes the crown lever thingy was a bit worn it felt to have 3 positions instead of two, thats the best way i can relate it from what i was told, but i knew it was iffy now it clicks only twice, before it grated a bit. 

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