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TECHNICAL GUIDE
The explanation here is only for the particular points of the Cal. 5Y85A and 5Y89A.
For preparing, checking and measuring procedures, refer to the "TECHNICAL GUIDE, GENERAL
INSTRUCTIONS".
I. REMARKS ON DISASSEMBLING AND REASSEMBLING
2 Hour, minute, second hands ~ 5 Date hand
How to install the hands
1. Pull out the crown to the second click. Rotate the crown until the date, and subsequently, the day of the
week change. After confirming the completion of the date and the day of the week change, set the dial.
2. Install the date hand and the day hand in order.
3. Rotate the crown further until just after the date changes.
4. Install the 24-hour hand at the 24 o'clock (zero) position.
5. Install the hour, minute and second hands to the 12 o'clock position.
Remarks on removing the small hands (Date, day and 24-hour hands)
• When pulling out the small hands, be sure to hold the dial while pulling them out.
• When pulling out a small hand, put the hand remover under the pipe of the hand and then remove the
hand.
8 Calendar mechanism plate
Lubricating
Date jumper section
4
Small hand
Pipe
Dial
Insert the hand remover here.
Day jumper section
Cal. 5Y85A/5Y89A
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