Seiko 7T32B User manual

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1

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EMMY

WATCH

VINTAGE

RESTORATIONS

Seiko

7T32B,7T42B

Movement

Parts

(1)

Compiled

by

EmmyWatch

-

htips://www.emmywatch.com

PARTS

CATALOGUE

/TECHNICAL

GUIDE

[SPECIFICATIONS]

Cal.

7T32B

Cal.

7T42B

Cal.

No.

item

7732B

|

7T42B

Movement

The

illustrations

refer

to

Cal.

7T32B.

{x

1.0)

Movement

size

Outside

diameter,

g27.6mm

24.0mm

between

3

o’clock

and

9

o’clock

sides

Casing

diameter

|

827.0mm

24.0mm

between

3

o'clock

and

9

o‘clock

sides

Height

3.2mm

Time

indication

Main

time

Stopwatch

Alarm Timer

(for

Cal.

7T42B}

Hour,

minute

|

Minute

and

|

Small

hour

and

|

Minute

and

second

hands

and

small

1/5-second

|

minute

hands

(Stopwatch

1/5-second

second

hands}

hands

and

minute

hands)

Driving

system

Step

motor,

4

pieces

Additional

mechanism

*

Electronic

circuit

reset

switch

*

Train

wheel

setting

device

+

Battery

life

indicator

(Small

second

hand

moves

at

two-second

intervals.)

e

Date

calendar

*

Instant

setting

device

for

date

calendar

*

Stopwatch

function

(Up

to

30

minutes

in

1/5

seconds)

«

Accumulated

elapsed

time

measurement

«

Split

time

measurement

*

Timer

function

(Up

to

60

minutes

in

minutes)

*

Alarm

function

(12-hour

indication

system}

*

Alarm

test

system

Loss/gain

Monthly

rate

at

normal

temperature

range:

less

than

15

seconds

Regulation

system

Nil

Measuring

gate

by

quartz

tester

Use

10-second

gate.

Battery

SEIKO

SR927W,

Maxell

SR927W,

SONY

SR927W,

EVEREADY

399

Battery

life

is

approximately

2

years.

Voltage:

1.55V

Jewels

0

jewel

SEIKO

CORPORATION

PARTS

CATALOGUE

Cal.

77328,

7T42B

Disassembling

procedures

Figs.

:

@

>

®

Reassembling

procedures

Figs.

:

©

>

®

Lubricating:

Types

of

oil

Oil

quantity

@@

Moebius

À

OC

Normal

quantity

OC>

SEIKO Watch

Oil

S-6

C>

Extremely

small

OC>

Silicone

Oil

500,000

c.s.

4589

801

Piezoelectric

element

\

N

HO

Case

back

[gr

À

NO)

Case

back

gasket

Case

ring

(Cal.

7T32B)

aD

Stopwatch

second

hand/Timer

minute

hand

Antimagnetic

shield

plate

(B}

L®

Minute

hand

(Cal,

77428}

7

1

Hour

hand

Button

C

””

P

a

Ove

E

——®

Small

second

hand

A

sea

ei

RP

®

Button

spring

clip

'

#«——®

Stopwatch

minute

H

hand/Timer

second

Button

B

hand

Alarm

minute

hand

Alarm

hour

hand

Dial

(10)

Winding

stem

Button

A

Button

spring

Holding

ring

for

dial

O

>

Please

see

the

remarks

on

the

following

pages.

Cal.

7T32B,

7T42B

027

973

Pin

for

date

dial

guard

808 580

Date

dial

guard

878 527

Date

dial

962

580

Intermediate

wheel

for

calendar

correction

737

580

Date

corrector

setting

wheel

802

580

Date

driving

wheel

271

583

Hour

wheel

for

alarm

Hour

wheel

240

580

Small

second

wheel

885

590

—

——Ö

———Ä-

First

intermediate

wheel

for

second-counting

950

590

——

Intermediate

minute-

counting

wheel

902 580

Minute-counting

wheel

950

590-

Intermediate

alarm

wheel

\

5

270580

————_

Center

minute

wheel

@60

©

©®

for

alarm

261582

i

Minute

wheel

for

alarm

nn

281582

——

7

eus

Setting

wheel

for

alarm

T1

022

230

Battery

clamp

screw

=

022

459

|

|

Circuit

block

cover

screw

O

=

Please

see

the

remarks

on

the

following

pages.

022

230

Battery

clamp

screw

4225

714

(Cal.

77328}

4225

716

(Cal.

7T42B}

Battery

clamp

Battery

{See

the

front

page.)

022

459

Circuit

block

cover

screw

4457

728

Circuit

block

cover

396 580

Friction

spring

for

second-counting

4000

710

(Cal.

7T32B)

4000

712

(Cal.

7T42B)

Circuit

block

4246

700

Buzzer

lead

terminal

4270

710

Battery

connection

(~}

027

974

Pin for

train

wheel

bridge

125

590

Train

wheel

bridge

Second-counting

wheel

4283

581

Spacer

for

center

wheel

and

pinion

241583

Fourth

wheel

and

pinion

231580

Third

wheet

and

pinion

701

580

Fifth

wheel

and

pinion

885

591

Second

intermediate

wheel

for

second-counting

261

580

Minute

wheel

281

580

Setting

wheel

ii

J

PARTS

CATALOGUE

Cal.

7T32B,

7T42B

4146

710

Step

rotor

è

4146

—

Chronograph

rotor

for

second

4146

710

Alarm

rotor

@

4146

710

ANE

Chronograph

rotor

for

minute

4002

700

Coil

block

4002

700

Coil

block

for

chronograph

second

A002

711

—

Coil

block

for

chronograph

minute

O

>

Please

see

the

remarks

on

the

following

pages.

4002

711

Coil

block

for

alarm

4450

710

Switch

lever

A

383

591

Setting

lever

for

alarm

383 592

Setting

lever

351

580

Winding

stem

for

alarm

282

582

Clutch

wheel

for

alarm

384 580

Yoke

351

580

Winding

stem

282

580

Clutch

wheel

391

591

Train

wheel

setting

lever

4239

710

Rotor

stator

4239

711

Rotor

stator

for

chronograph

second

4239

712

Rotor

stator

for

alarm

4239

713

Rotor

stator

for

chronograph

minute

Center

wheel

and

pinion

4450

702

Switch

lever

C

4450

701

Switch

lever

B

100

590

Main

plate

PARTS

CATALOGUE

Cal.

77328,

7T42B

Remarks:

Holding

ring

for

dial

The

type

of

holding

ring

for

dial

is

determined

based

on the

design

of

cases.

Check

the

case

number

and

refer

to

“SEIKO

Casing

Parts

Catalogue”

to

choose

a

corresponding

holding

ring

for

dial.

60

Pin

for

date

dial

guard

@

Pin

for

train

wheel

bridge

For

distinction

between

the

pins,

see

the

illustration

below.

[Pin

for

date

dial

guard}

[Pin

for

train

wheel

bridge]

027

973

027

974

@

Date

dial

878

527

(Black

figures

on

white

background)

The

type

of

date

dial

is

determined

based

on

the

design

of

cases.

Check

the

case

number

and

refer

to

“SEIKO

Casing

Parts

Catalogue”

to

choose

a

corresponding

date

dial.

©

Hour

wheel

@

Second-counting

wheel

Gs

Center

wheel

and

pinion

Combination

Parts

name

;

Type*

Hour

wheel

Second-counting

wheel

|

Center

wheel

and

pinion

LAS

i

——a

A

u

al

So

==

—s,

i

4

i

271

580

888

580

221

580

-

Ÿ

’

ZZ

!

M

A

===

i

i

271588

888

582

221

583

…

Short

type

*Abbreviation

A

..

Standard

type

{Movement

type}

PARTS

CATALOGUE

Cal.

7T32B,

7T42B

63

Circuit

block

To

identify

the

circuit

blocks

for

respective

calibres,

check

the

holes

on

the

pattern

as

shown

in

the

illust-

rations.

Cal.

7T32B

Cal.

7T42B

x

è

N

_

ldenufication

LB

hole

We

@

Winding

stem

for

alarm

©

Winding

stem

The

type

of

winding

stem

for

alarm

and

winding

siem

are

determined

based

on

the

design

of

cases.

Check

the

case

number

and

refer

to

“SEIKO

Casing

Parts

Catalogue”

to

choose

a

corresponding

winding

stem.

TECHNICAL

GUIDE

*

The

explanation

here

is

only

for

the

particular

points

of

Cal.

7T32B

and

7T42B.

e

For

the

repairing,

checking

and

measuring

procedures,

refer

to

the

“TECHNICAL

GUIDE,

GENERAL

INSTRUCTIONS”.

I.

STRUCTURE

OF

THE

CIRCUIT

BLOCK

Output

terminal

Upconverter

coll

‘Output

terminal

Il.

REMARKS

ON

INSTALLING

THE

BATTERY

*

A

necessary

step

after

installing

the

battery

»

After

the

battery

is

replaced

with

a

new

one,

or

after

the

battery

is

re-installed

following

the

repairing

procedures,

be

sure

to

short-circuit

the

AC

terminal

and

the

circuit

block

cover

with

tweezers

to

reset

the

circuit

as

shown

in

the

illustration

below.

/

Tweezers

*

After

resetting

the

circuit, be

sure

to

reset

the

stopwatch

hands

to

the

12

o'clock position.

1)

Pull

out

the

crown

at

the

3

o'clock

side

to

the

second

click.

2)

Press

button

“B”

to

reset the

stopwatch

second

N

hand

to

“0”.

Button

©

7

3)

Press

button

“A”

to

reset

the

stopwatch

minute

/

hand

to

“0”.

|

*

With each

press

of

buttons

“B”

and

“A”,

the

ARAN

stopwatch

second

and

minute

hands

move

0.2

Button

ON

seconds

and

0.5

minutes,

respectively.

They

move

automatically

while

the

buttons

are

kept

pressed

and

stop

when

they

are

released.

Cal.

7T32B,

7T42B

TECHNICAL

GUIDE

Cal.

7T32B,

7T42B

I.

REMARKS

ON

DISASSEMBLING

AND

REASSEMBLING

@

Winding

stem

with

crown

for

alarm

Winding

stem

with

crown

*

How

to

remove

*

Winding

stem

with

crown

at

the

3

o'clock

side:

Pull

out the

crown

to

the

first

click,

and

then

push

the

setting

lever

by

inserting

the

tip

of

tweezers

into

hole

“A”

in

the

illustration

below.

*

Winding

stem

with

crown

for

alarm

at

the

4

o'clock

side:

Pull

out

the

crown

for

alarm

to

the

first

click,

and

then

push

the

setting

lever

for

alarm

by

inserting

the

tip

of

tweezers

into

hole

”B”

in

the

illustration

below.

SEIKO

TIME

A

corp

UnaDJUSTED

*

Remarks

on

setting

the

winding

stems

The

winding

stems

at

the

3

o’clock

and

4

o’clock

sides

can

be

used

interchangeably.

However,

note

that

the

type

of

crown

differs

depending

on

the

length

of

winding

stem

and

the

design

of

cases.

@

Stopwatch

second

hand

@®

Stopwatch

minute

hand

*

Remarks

on

installing

When

installing

those

stopwatch

hands,

check

that

they

accurately

point

to

the

stopwatch

scales

on

the

dial.

©

Stopwatch

second

hand

*

Remarks

on

installing

After

installing

the

hands,

check

that

there

is

a

proper

clearance

between

the

stopwatch

second

hand

and

other

hands.

Dial

*

Remarks

on

installing

When

installing

the

dial,

make

sure

that

its

center

is

securely

set

at

the

proper

position.

TECHNICAL

GUIDE

Cal.

7732B,

7T42B

@

Pin

for

date

dial

guard

*

How

to

remove

*

How

to

install

1)

Turn

the

pins

90°

counterclockwise

to

loosen

1)

Set the

pins

properly

into

the

grooves.

them

using

a

screwdriver.

;

; A

2)

Turn

the

pins

90°

clockwise

using

a

screw-

2)

Pick

up

the

pins

using

rodico.

driver

to

fix

them.

Notes:

+

Never

turn

the

pins

more

than

90°

clockwise

or

counterclockwise.

*

Never

apply

undue

force

to

the

pins

in

turning

them

using

a

screwdriver.

*

Be

sure

to

use

a

screwdriver

that

fits

in

with

the

slot

of

the

pin

head.

*

Lubricating

Lubricate

the

date

jumper

and

the

tips

of

the

date

dial

as

shown

in

the

illustration.

Moebius

A

@

Hour

wheel

*

Remarks

on

installing

When

installing

the

hour

wheel,

be

sure

to

engage

it

securely

with

the

pinion

of

the

minute

wheel.

és

Battery

clamp

*

How

to

install

Set

the

battery

clamp

securely

to

the

guide

tube,

taking

care

not

to

press

down

the

protruded

portion

of

the

circuit

block

cover.

(er)

Battery

*

Remarks

on

installing

After

installing

the

battery,

be

sure

to

reset

the

circuit

with

tweezers

as

shown

in

the

illustration.