Technical Guide; How To Find The Correct Parts - Seiko 6T63A Technical Manual

TECHNICAL GUIDE

● How to find the correct parts, if not determined by 4 digit caliber number
Following parts are determined based on the design of watches, such as hands height, dial
color, and design of cases. Please refer to the SEIKO WATCH PARTS CATALOGUE in order to
choose corresponding parts.
DATE DIAL
3
WINDING STEM
59
* For screw down crown models, the stem is assembled to the crown and is not available
separatelly
SMALL HOUR HAND WHEEL
7
HOUR WHEEL
8
SWITHCH SPRING
16
SECOND COUNTING WHEEL
22
MINUTE COUNTING WHEEL
24
CENTER WHEEL AND PINION
49
SECOND WHEEL
56
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.
7 SMALL
HOUR HAND
WHEEL
2 0157012
4 0157013
0878***
0351177
8 HOUR 16 SWITHCH
WHEEL SPRING
0273038 4250035
0273042 4250054
22 SECOND 24 MINUTE
COUNTING COUNTING
WHEEL WHEEL
0888017 0740002
0888019 0740003
10/19
Cal. 6T63A
49 CENTER
56 SECOND
WHEEL AND
WHEEL
PINION
0221087 0240018
0221092 0240019