Seiko 6138A - Calendar Mechanism; Hand Setting Procedure

6f 3BA
Calendar
Mechanism
(Installing
the
second hand and
chronograph
minute and
hour
hands)
1. At the
fly-back
position,
tentatively
set
the
hands on the "0"
position.
2.
Then repeat fly-back operation
to ensure
the "0"
position.
If
the
hands
fail
to
resume correct
position,
adjust the
hands
while depressin
g
Ihe
fl
y
-
bac k b ut t
on.
However, since
the
fly-back
lever of the
chronograph
hour hand
has a springing
charac-
teristic,
it
prevents
the hand
from rotating
while the
hammer button
is depressed.
Con-
sequently,
reinstall the
chronograph
hour
hand
so that
it coincides
with
"0"
position.
3. Completely
push
in the hands at the
point
where they correctly indicate
the "0"
position.
NOTE:
The
second hand
axle is cut as
shown
in the diagram.
If the
second
hand is tumed
by
force
after
completely depressing
it to
the
bottom,
the
hand will loosen.
SEIKOplovidesahandyMovementHolder
S‑500tofaclitatehand‐setting
Second
hand
During
fly-back
operation
clearance
between
the
minute hanl
and
the
second
hand
will
be
slightly
changed
since
the
second
hand
axle is
pressed
in one
direction. Consequently,
install the
minute
hand
and
the
second
hand by
taking more
clearance
as compared
MN
h祠
①
①
①
①
Ｄ ⁝
ａ
︲
ap
for
day star
with'dial
disk
@
After
assembling
the snap
for
day star
-
with
dial disft,
pull
out
the
crown to the
④
Groove
for
operatrng
ヽ
又
Groove
for
winding stem
When
disassembling
and assem-
bling
the date dinl
guard,
per-
form
carefully
to avoid
breaking
r
the
chronograph hour hand
pin.
(*.2)
NOTE: However, since
this movement
holder is origi
nally
for 6139A,
the movement
is
slightly
raised
when using
this holder
for 6138,{.
If
the dowels
on the holder
are scraped
off, it is
impossible
to use
for
6139A.
'Date
dial
guard
screw
Date
dial
guard
-
④
④
Chronograph
minute
hand
ph
hour
hand
If
dial
feet
are
bent,
positions
of
the center
hole
of the
dial and
the chronograph
hour
and
minute hand
holes will become
hrst
click
and
tum the
crown
to right
and
left to check whether
or not
day
O
NEVER lubricate the
axle of
the
intermediate wheel
for
day
conection.@
O After
assembling
the
intermediate
半
七
鮪
富
1聯
＼
D聟

m"ぃ
Crews13pcsl④
ヽ助

um"r②
監
券
剃
漂
麟鍛
聯
③
‑6138A‑3‑
￨でミ
ヽ
11′
′
フ
卜
/′
/11ふ
″
一
一
一
一
″
し
へ
´
¨
囲screw釧
2
●
①