Seiko 8T67A - Disassembly and Reassembly Remarks; Part Identification Guidance; Date Indicator Details

TECHNICAL GUIDE
8T67A
Remarks:
● How to find the correct parts, if not determined by 4 digit caliber number.
Please refer to the following table in order to find the correct part number of each wheel according to the hand
installation height. The numeral 2 or 4 is printed on the DIAL.
Caliber code
8T6720A 8T6740A
No Parts name Parts code Parts code
⑧
Hour wheel
0273 038 0273 042
⑯
Switch spring
4250 088 (marking "2")
4250 090 Marking "4"
㉒
Second counting wheel 0888 028 0888 029
㉓
Minute counting wheel 0902 017 0902 018
㉔
Hour counting wheel 0902 017 0902 018
㊿
Center wheel and pinion 0221 087 0221 092
Second wheel 0240 018 0240 019
③ Date indicator
Parts code
Crown Date Color of Color of
position Position figure background
0878 328 3H 3H
Black White
0878 329 3H 3H
White Black
* All parts code are subject to change without notice.
8/20
5
REMARKS ON DISASSEMBLING AND REASSEMBLING THE MOVEMENT