Seiko 7D56A - Page 30

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7D56A Technical Guide
No. 10
No.

PROCESS
ILLUSTRATIONS AND SPECIAL INSTRUCTIONS

Check the
alignments of
wheels before
assembling the
train bridge.
14
Assemble the
CALENDAR TRAIN
BRIDGE
↓
13
Tighten the
CALENDAR TRAIN
BRIDGE SCREW.
↓
◆
Remove the
POSITIONING PIN
A and B.
↓
◆
Lubricate the upper
pivot of the 3
rd
intermediate wheel
for calendar
corrector.
↓
34
Secure the MONTH
INDICATOR
WHELL JUMPER.
↓
12
Set the YEAR
INDICATOR
DRIVING WHEEL
SPRING and
engage it.
11
Set the DATE
JUMPER FOR
UNIT’S DIGIT.


<12> Set the YEAR
INDICATOR DRIVING
WHEEL SPRING
Insert the spring underneath
the bridge, then engage it with
the arbor of the YEAR
INDICATOR DRIVING
WHEEL
(
see
Fi
g
.
10-2
)
.
Fig.10-1
<14> Assemble the CALENDAR
TRAIN BRIDGE.
Make sure that all the pivots fall in the
relevant
p
ivot
holes.
<13>Tighten the CALENDAR TRAIN
BRIDGE SCREW.
 Remove the POSITIONING
PIN A and B.
<34> Secure the MONTH
INDICATOR WHEEL JUMPER.
Secure the jumper to the teeth
of the MONTH INDICATOR
WHEEL underneath the
bridge (See Fig.10-1).
<11> Set the DATE JUMPER FOR
UNIT’S DIGIT.
Hook it to the arbor of the DATE
DRIVING WHEEL FOR UNIT’S DIGIT
which is pre-assembled to the
CALENDAR PLATE (see Fig. 10-3).




Fig. 10-3
Fig. 10-2
Fig. 10-4a
Fig. 10-4b
Make sure that the wheel
does
not
come
off.