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AS1700/1 Movement Info


canthus

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Just about to service foc an AS1700/1 25 jewel automatic movement in a fairly good Tressa watch for my local charity shop.  Balance swings free, time and date set seem ok, auto-wind seems to be working ok but it will not hand wind (cannot turn crown).    I have parts list and some limited tech info (covers only auto-wind, mainspring and date change but not movement).

Any advice will be most appreciated especially location of any Left Hand Threads or anything else out of the norm.

Edited by canthus
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If the crown can be used to adjust the hands but not wind in the winding position then the mainspring is most likely already fully wound. There will be a fault stopping the watch running & the owner has just wound it fully trying to get it to run. 

I have attached the 1700 parts sheet probably the same as you already have,

AS 1700.pdf

 

 

 

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