[jringo8769]

well i am finishing a mod and my movement is setup for the 3 o'clock position...and need to be at 4 o'clock...i am told the wheels are different...but can that be...i can not see anything here on the forum to confirm this...is it not adjusting them?...any help will be greatly appreciated...thanks in advance John

 

[feca67]

The day wheel rotates in 25.7 deg steps (360 / 14).
The date wheel rotates in 11.6 deg steps (360 / 31).
When you change the movement position from crown-at-3 to crown-at-4 you are rotating it by 30 degs (360 / 12). This means the day and date wheels will no longer align with the window at 3 since neither 25.7 nor 11.6 are factors of 30.
For the 6309 Seiko made two versions of each wheel, one for each movement position.

 

[jringo8769]

hello..so i just change the wheels and that is all i need to do?..thank you so much...that really helps...John

 

[7s26b]

Not wishing to muddy the waters here, as Feca's explanation was excellent- but just checking it's not a 7S2x movement we're talking about.
7S's use a date wheel that's the same for 3 O' and 4 O' crowns, which is actually 3:18ish /23.2 degrees .
There are true 4 O'clock 7S's - such as the Spork , S-waves and some very new models, but they're few and far between.

 

[jringo8769]

it is a 6309a movement...thanks for help too....now i just need to get pics of the stem and sort that out and it will be done..

 

[jringo8769]

hey i am looking at a 7s36..does this mean that a 3 o'clock one will work?...i found a new one ...i am told that the 7s36 just has extra jewels i think by you if memory serves me...thanks again John

 

[7s26b]

Date wheels on a 3 o'clock and 3:18 7s36 are the same , the day wheel is not. Yes, the 36 is a slightly better movement as it has two extra jewels (end caps) - but it has in total, four different jewels than those from the 26.