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TIMEX

model 25

calendar watch

9114

by

111,4

lig.

21

.

08

by

25.35

mm

.998

by

.830

in.

(/)

m

JJ

<

s::-

oO

om

~~

N)>

(]1z

c

)>

r

the

TIMEX

Model

25

Movement

The

Timex

Model

25

is

on

11

1

/4

'"

x 9

1;4

"'

calendar

movement

utilizing

the

basic

construction

of

the

Model

24

. Like

the

Model

24

it

features

a

"V-Conic"

Bearing system

and

rugged

two

plate

design.

The

entire

Calendar

mechanism

is

efficiently

housed

between

the

dial

plate

and

dial.

Whereas

most

watches

utilize

bridges, TIMEX

has

constructed

the

Model

25

movement

with full

plates

to

toke

advantage

of

the

accuracy

inherent

in this

type

of design.

This

accuracy

insures

complete

interchangeability

for

the

escape-

ment

and

gear

train

without

the

need

for

selective

fitting

and

adjustments

which

complicate

the

repair

of

most

watches

.

To

clean

the

TIMEX Model

25

it

is

necessary

to remove only

the

sweep

second

hand,

dial,

dote

ring,

dote

wheel

assembly,

ratchet

wheel,

and

balance

.

The

illustrations

on

pages

25.3

through

25.5

show

proper

procedures

. TIMEX

has

found

through

long

and

careful

research

that

the

best

method

of

cleaning

is

with only

the

above

mentioned

ports

removed.

The

cleaning

fluid, while

remov-

ing

any

contamination

from

the

movement

will also remove oil from

the

gear

•rain, pivots

and

holes.

If

further

dismantling

is

required,

removal

of

the

movement

plate

will

expose

the

gear

train

and

associated

ports

.

Re-assembly

should

start

with

the

dial

plate,

exercising normal

core

to

insure

proper

positioning

of

pivots in

their

respective

holes.

The

exploded

view

of

the

movement

on

page

25

.2 will

guide

re-assembly.

Cleaning

and

re-oiling

instructions

for

the

Model

25

movement

ore

given

on

page

25

.

6.

Re-assembly

techniques

ore

shown

on

page

25.7

and

25

.8.

25.1

..

25.2

the

Tl

MEX

model

25

movement

(exploded

view)

495

I /

~

~

416

(

~

~

I

498/ 1

255B

......._

0

242

®

.........

I

I

L

--

--

--

--

----,

r

-

- -

---

-

----

~

1

I I

I 201/1 I

:

~

:

;

~

l

i :

227

'--

$

:

180/1:

_,_,

,.,

) " / I :::;:::)(2

~

m·

·

:

~~

l

___

_

L

----

-

-----

i..

751

5100

740 \

:;::-,

_ '

'

I

__

__

_

___

__

.J

10

0

l i B

100 DIAL PLATE ASS'Y.

118

MOVEMENT

PLATE ASS'Y.

180/1 BARREL ASS'Y.

201

/ 1 2

NO

.

WHEEL

ASS'Y.

210

3

RD.

WHEEL ASS'Y.

227

4TH.

WHEEL ASS'Y.

242

CANNON PINION ASS'Y.

260

MINUTE WHEEL

ASS'Y

.

401/1

CROWN

a

STEM

ASS'Y

.

416 RATCHET

WHEEL

423/1

ROCKING BAR BUSHING

437

ROCKING BAR

ASS'Y

.

443

SET

LEVER

450

INTERMEDIATE

WIND

PINION

450/1

WINDING STEM PINION

452

WIND

a

SET PINION

495

RATCHET WHEEL

WASHER

495

/ 2

WINDING

BRI

DGE

498/1

HOUR

WHEEL WASHER

705

ESCAPE WHEEL ASS'Y.

710

PALLET

LEVER ASS'Y.

721

BALANCE

ASS'Y.

74 0 HAlRSPRING

WEDGE

PIN

751

DIALS

DIAL

HOLDER

850

HOUR HAND

851

MINUTE

HAND

852

/ 1 SWEEP SECOND HAND

2556

DATE WHEEL ASS

'Y

.

2557/1

DATE RING

255B

HOUR

WHEEL

257

6 DETENT SPRING

5100

PILLAR

SCREW

5443

SET

LEVER

SCREW

Disassembly

of

Movement

for

Cleaning

(model

25)

Ml

HAND

DIAL

DIAL

TAB

HOLE

DIAL

HOLDER

DIAL

PLATE

DIAL

HOLE

Removing the dial, date ring

and hands.

a)

Remove

sweep second

hand.

Do

not

remove

the

minute

or

hour

hand.

b)

The

dial

holder,

to

which

the

dial

is

clamped

is

held

on

the

move-

ment

by

means

of

three

tabs

which

are

bent

through

dial

holes,

onto

the

dial

plate.

c)

Once

the

dial

is

off

the

movement,

the

date

ring

can

be

removed.

There

is

no

need

for

further

dis-

assembly

of

the

dial

assembly

for

cleaning

unless severe

contamina-

tion

is

present

on

the

friction

and

cannon

pinions.

Should

further

disassembly

be necess

ary,

removal

of

the

minute

hand

wi

II

free

the

friction

and

cannon

pinion

as-

s

embly.

The

friction

pinion

is

held

in

the

cannon

pinion

by

a

snap

tit.

25.3

Disassembly

of

Movement

for

Cleaning

Cont'd.

RATCHET WHEEL

w

RATCHET

WHEEL

CROWN

SSTEM

ASSEM

l

SET LEVER

SCREW

SET LEVER

25.4

'

'

'

DATE

WHEEL

Removing the Date

Wheel

and

Ratchet

Wheel

ASSEMBLY

The

next

step

in

preparing

the

move-

ment

for

cleaning

should

be

the

re-

\

CROWNS STEM

ASS

EM.

moval of

the

date

wheel

and

ratchet

wheel. Proceed

as

follows :

a)

Remove

the

date

wheel.

b)

Grasp

the

crown with

the

fingers

of

one

hand

and

release

the

click

by holding

the

click

away

from

the

ratchet

wheel. Let

the

crown

revolve slowly

in

the

fingers

being

careful

not

to let

the

crown slip.

c)

When

the

mainspring

has

been

fully let down, remove

the

ratchet

wheel washer

and

ratchet

wheel.

Note

:

Ta

remove

the

ratchet

wheel washer, lift

one

side

free

of

the

lancing

in

the

ratchet

wheel

and

revolve t h e

washer

approximately

V4

turn

.

Removing the Crown

and

Stem

Ta

remove

the

crown

and

stem

as-

sembly, invert

the

movement

sa

that

the

movement

plate

is

facing

you.

Turn

the

set

lever screw

approxi-

mately

one

turn

and

lift

the

tail

of

the

set

lever

out

of

engagement

with

the

stem.

The

crown

and

stem

can

naw

be

removed.

Disassembly

of

Movement

for

Cleaning

Cont'

d.

BALANCE

SCREW

ASSEM.

BALANCE SCREW

~':~

'

'

'

'

'

--------

·

·L,EEL

ASSEM.

Removing the ·Balance

Wheel

Two

"V-conic"

studs

ore

used

as

bearings

for

the

bolance

staff

on

the

TIMEX

Model

25

movement.

The

bearing

on

the

dial

plate

is

mounted

in

a

screw

so

that

fine

endshake

ad-

justment

is possible.

Removal of

the

balance

wheel

assem-

bly

should

be

carried

out

in

the

fol-

lowing

manner:

a)

Remove

the

hairspring

wedge

pin,

being

careful

not

to

distort

either

the

pin

or

the

hairspring.

b)

Rotate

the

balance

wheel slowly

until

the

hairspring

toil

is

free

of

the

hairspring

wedge pin

brocket

and

the

regulator

.

c) Loosen

the

bo

lance

screw

ossemb

ly

(counter-clockwise

direction)

us-

ing a

su

itabl

e screw driver,

until

the

end

of

the

balance

staff

is

free

of

the

"V-conic"

bearing

.

During

the

loosening

of

the

screw,

only

minimum

downward

pressure

should

be

applied

with

the

screw

driver,

as

excessive

downward

pressure

could

seriously

damage

the

balance

staff

points.

d)

Carefully

remove

the

balance

as-

sembly.

25.5

25.6

Cleaning

the

Model

25

Movement

After

removal

of

the

balance

wheel,

and

the

other

ports

mentioned

on

Pages

25.3

through

25.5,

the

movement

is

ready

to

be

cleaned.

If

a

cleaning

machine

is used,

place

the

movement

in

the

basket

with

the

dial

plate

down

to

insure

proper

drainage

of

the

fluid

from

the

mainspring

barrel.

It

should

be

well swirled

in

the

cleaning

fluid

after

which two

sets

of rinsing

fluid

should

be

used.

The

final

cleaning

fluid

must

be

absolutely

clean.

After

cleaning,

the

movement

should

be

thoroughly

dried.

If

a

cleaning

machine

is

not

available,

the

some

procedure

should

be

followed

manually,

by

re-inserting

the

stem

into

the

movement,

grasping

the

movement

firmly

around

the

stem

and

shaking

it

in

the

cleaning

and

rinsing fluids

to

insure

that

the

fluid will

pass

through

the

entire

mechanism.

The

balance

assembly

should

be

cleaned

separately

in a

small

jar

to

prevent

damage

to

the

hairspring.

Only

standard

watch

cleaning

solutions

should

be

used

throughout.

Lubricating

the

Model

25

Movement

The

movement

should

be

re-oiled

in

the

normal

manner

using

only

high

grade

watch

oils (oil

used

in

factory

assembly

is

Elgin

M56b).

The

mainspring

is

permanently

lubricated

with a solid

coating

which

is

not

affected

by

normal

cleaning

solutions

and

should,

therefore,

not

be

oiled.

The

upper

pivot

of

the

escape

wheel

con

be

oiled

through

the

holes in

the

-minute

wheel.

The

"V-conic"

bearings

should

be

oiled

V2

to

%

full

before

replacing

the

balance

wheel.

Oil

both

the

top

and

bottom

sides

of

the

intermediate

wind pinion

and

wind

and

set

pinions.

Oi

I

the

intersection

of

the

rocking

bar

and

set

lever.

A

slot

has

been

provided

at

the

bose

of

the

center

post

to

facilitate

oiling

the

fourth

pinion

upper

pivot.

If

the

friction

pinion

has

been

removed

from

the

cannon

pinion

and

cleaned,

oil

the

friction pinion

before

re-assembly

into

the

cannon

pinion

.

The

impulse pin

should

be

oiled

at

its

working

surface.

Rubber

gaskets

used

on crowns,

such

as

the

type

used

on

waterproof

and

dust-

proof

models,

should

be

lubricated

with silicone

grease

or

silicone oil.

Reassembly

of

the

Model

25

Movement

DIAL PLATE

MOVEMENT

PLATE

LIGHT

PERMANENT

CONTACT

HAIRSPR

BALANCE SCREW

V-CONIC

BEARING

REGULATOR

SLOT

Replace

the

balance

wheel

carefully

into

the

movement

by

tilting

the

wheel

and

inserting

first,

the

dial side

pivot

(hairspring

side)

then,

the

movement

side

pivot

inta

the

"V-

conic

bearing".

Adjust

the

balance

screw

enough

to

hold

the

balance

in

place.

By

rotating

the

balance

wheel,

insert

the

hairspring

into

the

regulator

slot

and

hairspring

wedge

pin

bracket.

Before

repinning

the

hairspring,

make

certain

the

impulse

pin

is

within

the

slat

in

the

fark

of

the

Pallet

Lever. Repin

the

hairspring

making

sure

that

the

wedge

pin is

straight

and

true,

as

any

distortion

ta

the

pin could

interfere

with

the

nor-

mal

"breathing"

of

the

hairspring

.

The

endshake

is

now finally

adjusted

using

caution

to

apply

only

minimum

downward

pressure

to

the

balance

screw,

as

excessive

pressure

could

damage

the

points

of

the

balance

staff.

Inspect

the

hairspring

to

be

certain

that

it

is

properly

adjusted.

As

shown

by

the

diagram,

the

hairspring

should

be

in

light,

permanent

contact

with

the

inside

edge

of

the

regulator

slot

.

The

hairspring

should

not

leave

the

inside

edge

of

the

regulator

slot

at

any

time

during

the

complete

maxi-

mum

occilitation

of

the

balance.

25.7

25.8

Reassembly

of

the

Model

25

Movement

DATE

WHEE

ASSEMBLY

DATE

RING

SWEEP

SECOND

STAFF

INDEXING PIN

SWEEP SECOND HAND

Use

the

following

procedures

in

re-

assembling

the

dote

mechanism

.

a)

Replace

date

wheel

assembly

on

the

movement.

Note:

Dote

wheel

must

be

re-

placed

with Iorge

head

of

bushing

toward

dial

(refer

to

illustrations

on

page

25.4)

b)

Assemble

date

ring

to

the

move-

ment

making

sure

that

the

"Y"

shaped

end

of

the

detent

spring

is

positioned

in

the

space

between

two

teeth

of

the

date

ring.

c)

Rotate

the

dote

wheel

assembly

clockwise so

that

the

indexing

pin

touches

the

exit

side of

the

date

ring

tooth.

d) Position dial

assembly

to

move-

ment

with

hands

set

at

approxi-

mately

2

o'clock.

Then

bend

the

lugs on

the

dial

holder

to

clomp

the

dial

to

movement.

It

is

essen-

tial

that

the

dial

be

clamped

tight

to

the

movement

.

Toke

core

that

the

position of

the

hands,

date

ring

and

date

wheel

assembly

are

not

changed

during

this

operation.

e)

Once

the

dial is

clamped

to

the

movement,

the

action

of

the

date

indexing

can

be

checked.

Index-

ing

should

start

between

the

hours

of

11

and

12. Also,

the

date

ring,

during

the

indexing

and

near

completion

of its

travel,

must

indicate

a

"snapping

effect"

(darts

forward)

of

date

numeral

to

its position in

the

date

window.

If

the

minute

hand

has

been

re-

moved,

replace

it on

the

dial

assembly

·

together

with

the

fric-

tion

and

cannon

pinions

before

the

dial

assembly

is

put

on

the

movement

.

Replace

the

sweep

second

hand

by

driving it

just

below

the

end

of

the

sweep

second

staff

as

shown

in

the

diagram

.

Be

certain

the

sweep

hand

is

set

below

the

chamfer

on

the

top

of

the

staff

.