TECHNICAL GUIDE
Cal. V157A/V158A
9/8
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INTERMEDIATE WHEEL FOR DAY SETTING (only for V58A)
Please take care of the assembling direction of
INTERMEDIATE WHEEL FOR DAY SETTING.
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DATE DIAL GUARD
For the Cal. V57A and V58A, new assembling
construction with 3 hooking portions and 2 guide
pins are used.
• Disassembling
. Remove the DATE DIAL GUARD from guide
pin of A part by the tweezers as shown in the
illustration, and turn the DATE DIAL GUARD
counter-clockwise until it goes on to the guide
pin.
2. Remove the DATE DIAL GUARD from guide pin
of B part the same as A part.
3. After confirming that the 3 hooking portions
on the main plate are removed from the DATE
DIAL GUARD, remove it from main plate.
• Assembling
. Put the DATE DIAL GUARD on the postion which
is shown in the illustration. Please put A and
B parts on the guide pins.
2. Set the hooking portion of D part to the main
plate by turning it clockwise.
3. Set the hooking portions of C and E part, and
set A and B parts to the guide pins at the same
time.
4. Check if the DATE DIAL GUARD is properly
assebmled to the main plate.
a part
hooking portions
B part