Timex DYNABEAT 254 User manual

TIMEX
model 254
DYNABEAT
Electric Calendar Watch
9%
by
12%
lig.
22.1
by
28.7
mm
.870
by
1.130 in.
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The
TIMEX
®Model 254Movement
ACTUAl
SIZE
The
Timex
Model
254
is
an
9%x
12%
Ligne
high
frequency
electric
calendar
movement.
The
Model
254
movement
is
the
same
as
the
Model
253
movement
except
that
the
calendar
mechanism
has
been
added.
The
date
can
be
changed
manually,
either
forward
or
backward,
by
rotating
the
hands
through
24
hoUlrs.
The
Timex
code
number
appears
on
the
edge
of
the
dial.
The
code
number
shows
the
catalog
number,
movement
number
and
year
of
manufacture
for
the
watch
(see
Page
1.1
of
the
Timex
Service
Manual
for
explanation).
Caution:
Since
watch
contains
permanent
magnets,
no
attempt
sh01
be
mode
to
demagnet
i
ze
the
watch.
254.1

The
TIME
X®
Model254
Movement
(exploded
view)
145
DIAL
REST
206
CENTER
WHEEL
ASS
'Y.
498
/ 1
HOUR
WHEEL
WASHER
751
DIAL
850
HOUR
HAND
498
/ 1
cQl
851
MINUTE
HAND
852
/ 1
SWEEP
SECOND
HAND
2556
DATE
WHEEL
ASS
' Y.
2557
/ 1
DATE
RING
2558
HOUR
WHEEL
ASS'Y
.
2576
DETENT
SPRING
2557
/ 1
2576
/
A-.
206
T
cv
2556
I
I
145
MOVEMENT
254.2

Disassembly
of
the Model
254
Movement
CASEBACK
I
CELL
I
.--OPENING
NOTCH
f:1
MOVEMENT
COVER
MOVEMENT
LOCATING
NOTCH
FIGURE A
FIGURE B
Insert
blade
into
the
open
ing
notch
on
the
bezel
and
pry
the
caseback
off.
(The
locating
tab
on
the
caseback
is
used
for ori-
entation
of
the
back
during
re-
assembly).
Remove
the
energy
cell
(energy
cell
with
a vol
tage
of
less
than
1.5
vol
ts
or
in service in
excess
of
one
year
should
be
replaced).
Lift
off
the
movement
cover.
The
cover
is
held
in
place
by two
tabs
which
snap
into
recesses in
the
bezel.
254.3

Disassembly of Movement Cont'd.
Y-
SETTING
STEM
FIGURE C
ERT
TWEEZERS
HERE
CRYSTAL
To
remove
the
stem
The
stem
is
held
in
position
by
the
stem
bracket
(see
illu
stra-
tions
at
left).
To
remove
the
stem,
pull
the
stem
out
int
o
the
set
position
and
continue
to
maintain
a
slight
outward
pull.
Place
the
points
of
a
heavy
tweezer
int
o
one
side
of
the
stem
bracket
and
push
bracket
aside
to
release
one
s
id
e
of
stem.
Con-
tinue
to
pull
the
stem
outward
and
use
the
points
of
the the
tweezer
to
release
the
other
side
of
the
stem
from
the
bracket.
The
stem
wi
II
now pull
free
of
the
movement
and
case.
After
the
stem
is
removed,
the
mow
~
ment
can
be
removed
through
the
crystal
side
of
the
case.
Remove
the
crystal
with
a
crystal
seating
tool
and
then
lift
the
reflector
ring
and
movement
free
of
the
case
(note
the
posi-
tion
of
the
movement
l
ocating
tabs
in
side
the
bezel.
Tabs
shou
ld
properly
aligne
in
notches
of
the
plate
when
re-assembling
the
watch.)

Disassembly of Movement Cont'd.
DETENT SPRING DIAL
REST
c
WHEEL
ASS ' Y.
FIGURE F
Remove
the
sweep
second
hand
and
the
minute
hand.
Bend
the
four dial
tabs
enough
to
free
the
dial
from
the
move-
ment.
Turn
the
assembly
over
and
care-
fully lift
the
dial
off
the
move-
ment
.
Note
the
position
of
the
parts
under
the
dial.
In
the
illustration
at
left,
note
the
detent
spring
which
positions
the
dote
ring
and
the
finger
on
the
date
wheel
which
indexes
the
dote
ring (shown in its
position
following
the
date
change).
Lift
off
in
order:
Date
Ring
Date
Wheel
Assembly
Center
Wheel
Assembly
Detent
Spring
(note
engage-
ment
in dial rest.)
With
these
parts
removed,
the
movement
may
be
disassembled,
cleaned
and
relubricated
as
de-
scribed
for
the
Model
253
on
Pages
253.3
through
Page
253.16.
The
date
wheel
assembly,
center
wheel
assembly
and
detent
spring
may
b~
cleaned
using
standard
watch
cleaning
solutions.
Caution
: Extre
me
car
e
mu
st be
exercised
when
clean
ing
dials
,
hands
,
and
dat
e
r i n g s .
Solvent
type
cleaners
may
damage
the
finish
on
these
parts
.
254
.5

Reassembly of the Model254 Movement
After the basic movement is cleaned, lubricated and reassembled as
described on Page 253.3 through 253.16, the reassembly of the Model
254 is a follows:
Lubricate the dote wheel post and the end of the detent spring
where it engages the dote ring using non spreading type oil (Moebius
Synt-o-lube is used in the factory) .
Replace detent spring in dial rest .
Assemble dote wheel assembly.
Assemble dote ring, deflect end of detent spring until it engages
tooth of dote ring.
Position
finger of dote wheel next to dote ring tooth as shown on
Page 254.5.
TO POSITION HANDS FOR PROPER DATE CHANGE
First Check that finger on dote wheel is positioned against a dote
ring tooth as shown in illustrofion on Page 254.5.
Next Replace the dial assembly holding the hour hand at the 2
o'clock position I make certain hour wheel teeth engage min-
ute pinicn teeth) and bend the four dial tabs to hold the
assembly firmly in position.
Finally -Replo::e
the minute hand and sweep second hand.
Insert crown and stem assembly and rotate hands clockwise to assure
that dote change is completed by 2 o'clock.
Remove crown and stem assembly.
Place assembly into bezel being sure notches in plate engage the tabs
inside the bezel.
Position
reflector ring on top of dial.
Insert crystal using crystal insertion tool.
Insert crown and stem assembly thru bezel with a twisting motion to
assure engagement in the brocket.
Insert movement cover and snap into bezel.
Insert fresh Timex type A energy cell''' and snap case bock into position.
Push crown in
and watch will start immediately. If not, slight finger
agitation of the watch may be necessary to start the mechanism.
''' Use of energy cell not meeting Tim ex sp e cifications may cause the
watch to malfunction . Do not disp ose of energy cell in fire.
254.6