SEIKO 43A REPLACEMENT

[berniethebolt]

HI can anybody suggest a replacement for the 43A Movement i have trawled tinternet til i am blue in the face without any luck. it is a friends watch and i would rather just replace the movement than try to fix it(if it can be fixed) any help would be appreciated.

[clockboy]

I have found the same issue. Maybe the only way forward is to service the movement or take measurements and see if you can find a match using the Cousins catalogue. Here is its tech sheet.

https://www.thewatchsite.com/d1/files/Seiko Technical Manuals/43A_4303A.pdf

 

[berniethebolt]

22 hours ago, clockboy said:

I have found the same issue. Maybe the only way forward is to service the movement or take measurements and see if you can find a match using the Cousins catalogue. Here is its tech sheet.

https://www.thewatchsite.com/d1/files/Seiko Technical Manuals/43A_4303A.pdf

 

THANKS I WILL TRY THAT.

[berniethebolt]

20 hours ago, berniethebolt said:

THANKS I WILL TRY THAT.

found a working mvmt on e-bay from Japan ? at a decent price so will replace with that then take the original apart and see what happens using your useful data sheet. thanks again B.

[berniethebolt]

On 2/22/2021 at 1:23 PM, berniethebolt said:

found a working mvmt on e-bay from Japan ? at a decent price so will replace with that then take the original apart and see what happens using your useful data sheet. thanks again B.

as stated took it apart, transferred the good parts and now its fine At the same time my friend gave me a Rotary quartz to fix and i had to search for a Miyota  4T43 to replace a 4T48 (or vice-versa) (i forgot which!) and had to fiddle around as the sub second at 6 was higher up the face than the original but i got there in the end! i am becoming quite adept at these quartz movements as i never fancied tinkering with them before but its another string to my bow. B THE SEIKO is the second set of pictures (me idiot)

Edited March 9, 2021 by berniethebolt
ADDITION

[musicus]

On 2/21/2021 at 8:50 AM, berniethebolt said:

THANKS I WILL TRY THAT.

I have 43A. Wondering if you know where the release point is for the stem. I can't find it. Am trying to remove the movement in order to clean the crystal inside.

[Marc]

If you pull the crown out to the setting position does a little tab pop out of the side of the movement?

If so, and especially if it has a little dimple in it,  try pushing down on that to release the stem.