Timex 42 User manual

TIMEX
model 42
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TIMEX
Day
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the TIMEX Model 42 Movement
The Timex Model 42 is a l8Y2 ligne electric day-date movement. The
Model 42 movement is similar to the Model 40 movement except that a
day-date mechanism has been added. The power to drive the movement
is supplied by a miniature energy cell. Power from the energy cell drives
the balance. The
balance drives the time train which, in turn rotates the
hands
and the day-date mechanism.
The
day can be changed either forward or backward by pulling the
crown
out to the set position and turn through 24 hours in either direction .
The date can be changed only in the increasing direction by first pushing
the crown into the run position
and then turning the crown in the counter-
clockwise direction. The
date will increase one number from each half
turn of the crown. Do not attempt to turn the crown clockwise when in the
run position. Basic servicing techniques
are similar to those used for the
Model 40 except that all hands must be removed prior to removing the
dial.
42 .1

42.2
the
TIMEX
Model42
Movement
(exploded
view)
I
I
I
I
~
/I
851
........
'
850
--A
145
145
206
2561/1
40111
751
850
851
852/1
2566/1
2557/1
2558
2556
2572
2573
2575
2576
2650
..,
DIAL REST
CENTER WHEEL ASSEMBLY
DAY FRAME ASSEMBLY
CROWN
&
STEM
DIAL
HOUR HAND
MINUTE HAND
SWEEP SECOND HAND
DATE SET DISC ASSEMBLY
DATE RING
HOUR WHEEL
DATE WHEEL
DATE SET DETENT SPRING
DAY DETENT SPRING
DATE LEVER
DATE CLICK SPRING
DATE WHEEL STUD

Disassembly
of
Movement
(model
42)
The
first step in disassembling the movement
is
to remove in
order
(as
described on pages 40.3 and 40.4
of
the Timex Service Manual) the
caseback,
energy
cell, movement cover, crown
and
stem assembly (be
careful to pick
out
the Date Set
Disc
Assembly
and
the Date Set Detent
Spring
after
the Crown and Stem Assembly
is
removed). (Figure
#1)
Turn the watch over and with a crystal
lift
remove the crystal from the
bezel,
lift
out
the reflector ring and then remove the
dial
and
movement
assembly.
Note
the position
of
the movement locating tabs inside the
bezel
to
make reassembly easier.
DATE
SET
DETENT
SPRING
FIG
. I
42.3

42.4
Disassembly
of
Movement
(model
42)
DAY
DETENT
SPRING
2573
DATE
LEVER
2575
DATE
CLICK
SPRING
2576
FIG
.2
DATE
CLICK
SPRING
Remove
all
hands from assembly.
Turn the movement over and while
holding the
dial
in place, bend the
four
dial
legs up just enough to
permit removal
of
the
dial
from the
movement. Turn the movement over
so
the
dial
is
up and carefully
lift
off
the dial.
Note
the position
of
the loose parts under the
dial
(see
figures
2,
3 and 4, and the ex-
ploded view on
page
42.2), then
remove
in
order:
Hour
Wheel
Washer
Day
Frame Assembly
Date
Ring
Day
Detent Spring
Date
Wheel
Stud
Date
Wheel
Hour
Wheel
FIG.
3 Center
Wheel
GROUND
SPRING
4035
FIG.4
It
is
not necessary to remove the
Date Lever and the Date Detent
Spring.
The movement assembly may now
be disassembled and serviced
as
detailed on pages 40.5 through
40.12
of
the Timex Service Manual.

Reassembly of Movement (model 42)
After the electric movement has been serviced following the Model 40
procedures, care must be exercised in reassembling the dial and indexing
parts
of the model 42 in order to assure proper functioning.
First assemble the Setting Stem
and Crown into the movement (do not
put in the Date Set Disc Assembly
and Date Set Detent Spring at this
time)
and place the movement in the dial up position. Next, assemble
in
order as shown in the ex ploded view on page 42.2 and in figures 2,
3
and 4:
Center
Wheel
Hour Wheel
Date Wheel
Date Wheel Stud
Hour
Wheel Washer
Insert the Day Detent Spring into the proper slot in the Dial Rest and
carefully deflect the end of the spring until it can be temporarily hooked
under the edge
of the Dial Rest (see figure 5).
FIG .5
42 .5

42.6
Reassembly of Movement (model 42)
Visually examine the Date Ring to be sure it is not bent or damaged.
Place the Date Ring on the Dial Rest and position it against the end of
the Date Click Spring and the tab on the Date Lever. Position the Date
Ring as near the center as possible. (See figure 2)
Lubrication: The
Day and the Date mechanisms must be lubricated before
the Dial is assembled to the movement. (Elgin M56B oil is the watch
lubricant used in the factory). Apply a small amount of watch oil at :
A. Junction of Date Lever and Guide Stud.
B. Both sides of Nose of Date Lever
C. Tab of Date Lever (Inside Surface).
D. Date Wheel at bearing with Date Wheel Stud.
E. Date Click Spring where it contacts Date Ring.
F. Contact surface
of Day Detent Spring.
Examine the
Day Frame Assembly for damage and be sure the p1n1on is
free to turn. (Lubrication: The Bearing seat of the Date Wheel on outer
dimension of the Day Frame should be lubricated with a small amount
of watch oil (Elgin M56B is the watch oil used in the factory ). Note the
flat on the edge of the day frame assembly. Holding the Day Frame
Assembly
so the flat is toward the crown and parallel to the slot in the
Dial
Rest, place it on the movement. Apply slight pressure on the day
frame and move it slightly until it is centered and drops into place on
the Date
Wheel Stud and into the hole in the Dial Rest (see figure 3) .
Carefully place the Dial on the movement so the dial legs are in the
slots, then,
holding the dial firmly in place, turn the movement over and
bend the legs to secure the assembly. With a tweezer or small screw
driver, reach through the movement
and release the hooked end of the
Day Detent Spring.
Pull the Setting Stem
with Crown into the set position, then, with the
movement
in the dial down position, turn the crown clockwise and observe
the movement
of the end of the Date Lever. The end of the lever first
deflects under the
plate and then will snap out . When the lever snaps out,
push
in the crown, turn the movement over and assemble the hands to
the 12 o'clock position.

Reassembly
of
Movement
(model
42)
Remove the Setting Stem
With
Crown assembly
(see
page
42.3).
Place the
dial
and
movement into the bezel being careful
to
position
so
the
movement locating
tab
is
in the
proper
position.
Posi
tion the
reflector
ring
and
replace the crystal. Turn the
watch
over
and
place the
Date
Set
Detent
Spring
in
a slot in the
Dial
Rest
. Position the Date Set Disc Assem-
bly
on
the spring
and
insert the Setting Stem
and
Crown through the
Bezel, through the Date Set Disc
and
into
the set position in the move-
ment.
(lubrication:
A small amount
of
watch
oil
(Elgin M56B is used in
the
factory
) should be
applied
to
one side
of
the cam lobe
and
to
the
bearing
point
of
the cam on the stem.)
Examine the Energy Cell
Ground
Spring in the movement
to
be sure
it
is
in the proper position
to
prevent a short circuit
and
to
assure
proper
grounding
.
(see
figure
4).
Position the Movement Cover in the Bezel,
but
in the Timex Energy
Cell*
and
snap in the
case
back.
Push
the crown
into
the run position
and
check
that
watch
runs.
Test
function
of
the
Day
change
and
the Date change.
*Use
of
an energy cell not meeting TIMEX specifications may cause a
Timex watch
to
malfunctio
n.
Timex Energy Cells can be
obtained
from
your
local Timex Retailers
or
Timex
authorized
Watch
Service Center.
42.7