Seiko 5Y19A Quick start guide

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PARTS LIST/TECHNICALGUIDE

ANALOGUE QUARTZ Cal. 5Y19A

[SPECIFICATIONS]

Cal. No.

Item 5Y19A

Movement

Driving system

Additional mechanism

Loss/gain Monthly rate within normal temperature range: less than 15 seconds

Regulation system Nil

Measuring gate by quartz tester Use 10-second gate

SEIKO SR920SW

Battery

Battery No.

Voltage 1.55 V

Battery life Approximately 3 years

Jewels 0 jewels

Step motor (Load compensated driving pulse type)

• Daycalendar

• Instantdatesettingdivice

• Datecalendar

• Electroniccircuitresetswitch

• Trainwheelsettingdevice

• 24hourindicator

• 3 hands (hour, minute and

sec ond hands)

•　Diameter

Outside :

ø24.0mm

21.5 mm between 3 o’clock and 9 o’clock sides

21.5 mm between 6 o’clock and 12 o’clock sides

Casing :

ø 23.3 mm

21.3 mm between 3 o’clock and 9 o’clock sides

21.5 mm between 6 o’clock and 12 o’clock sides

• Height:

3.07 mm (Including battery portion)

PARTS LIST Cal. 5Y19A

2/12

Please see the remarks on the following pages.

Lubricating of some parts is shown in “II. REMARKS ON DISASSEMBLING AND REASSEMBLING”.

Disassembling procedures Figs. : 1 44

Reassembling procedures Figs. : 44 1 AO-3

AO-2

SEIKO Watch Oil S-6

Normal quantity

Large quantity

Lubricating : Types of oil　　Oil quantity

2 HOUR, MINUTE AND SECOND

HANDS

5 DATE HAND

6 DIAL

7 CALENDAR MECHANISM PLATE

SCREW

0022 222

8 CALENDAR MECHANISM PLATE

0839 509

9 DATE STAR

0970 538

10 DAY DRIVING WHEEL

0802 535

11 DATE DRIVING WHEEL

0802 570

1 CASE RING

3 DAY HAND

4 24-HOUR HAND

PARTS LIST Cal. 5Y19A

3/12

Please see the remarks on the following pages.

Lubricating of some parts is shown in “II. REMARKS ON DISASSEMBLING AND REASSEMBLING”.

13 DAY STAR

1002 546

12 24-HOUR HAND WHEEL

0157 543

14 DATE CORRECTOR WHEEL

0804 570

15 INTERMEDIATE DATE WHEEL

0817 539

16 HOUR WHEEL GUARD SCREW

0022 222

17 HOUR WHEEL GUARD

0376 506

18 DATE CORRECTOR SETTING WHEEL

0737 909

19 SECOND INTERMEDIATE WHEEL FOR

DATE SETTING

0962 909

20 HOUR WHEEL

0271 563

PARTS LIST Cal. 5Y19A

4/12

Please see the remarks on the following pages.

Lubricating of some parts is shown in “II. REMARKS ON DISASSEMBLING AND REASSEMBLING”.

21 BATTERY

SR920SW

22 BATTERY CONNECTION (+) SCREW

0022 247

23 BATTERY CONNECTION (+)

4000 760

24 CIRCUIT BLOCK

4000 760

25 TRAIN WHEEL BRIDGE

0125 904

PARTS LIST Cal. 5Y19A

5/12

26 FOURTH WHEEL & PINION

0241 528

27 THIRD WHEEL & PINION

0231 904

28 FIFTH WHEEL & PINION

0701 904

30 MINUTE WHEEL

0261 908

31 TRAIN WHEEL SETTING LEVER

0391 890

32 SETTING LEVER

0383 891

33 YOKE

0384 890

Please see the remarks on the following pages.

Lubricating of some parts is shown in “II. REMARKS ON DISASSEMBLING AND REASSEMBLING”.

29 STEP ROTOR

4146 890

PARTS LIST Cal. 5Y19A

6/12

Please see the remarks on the following pages.

Lubricating of some parts is shown in “II. REMARKS ON DISASSEMBLING AND REASSEMBLING”.

34 SETTING WHEEL

0281 904

35 SETTING STEM

0351 892

37 1ST INTERMEDIATE WHEEL FOR

CALENDAR CORRECTION

0962 890

39 COIL BLOCK

4002 760

41 CENTER WHEEL AND PINION

0221 575

43 BATTERY CONNECTION(-)

4270 904

36 CLUTCH WHEEL

0282 890

38 COIL BLOCK SCREW

0022 247

40 ROTOR STATOR

4239 904

42 INSULATOR

4216 904

44 MAIN PLATE

0100 959

PARTS LIST Cal. 5Y19A

7/12

lTools and consumables required for disassembling/reassembling

•Movement holder

UNIVERSAL MOVEMENT HOLDER (S-682)

• Watch oils

SEIKO watch oils (AO-3 and AO-2)

AO-3 AO-2

S-6

SEIKO watch grease (S-6)

TECHNICAL GUIDE Cal. 5Y19A

8/12

●The explanation here is only for the particular points of the Cal. 5Y19A.

I. REMARKS ON DISASSEMBLING AND REASSEMBLING

2 HOUR, MINUTE, SECOND HANDS– 6 DIAL

■ Remarks on removing the small hands (Date, day and 24-hour hands)

• Whenpullingoutthesmallhands,besuretoholdthedialwhilepullingthemout.

• Whenpullingoutasmallhand,putthehandremoverunderthepipeofthehandandthenremovethe

hand.

■How to install the dial and the hands

1.Pulloutthecrowntothesecondclickposition.Turnthecrownuntilthedate,andsubsequently,the

dayoftheweekchange.Makesurethecompletionofthedateandthedayoftheweekchange,set

thedial.

2.Installthedatehandandthedayhandinorder.

3.Turnthecrownfurtheruntiljustafterthedatechanges.

4.Installthe24-hourhandatthe24o’clock(zero)position.

5.Installthehour,minuteandsecondhandstothe12o’clockposition.

Dial

Insertthehandremoverhere.

Smallhand Pipe

TECHNICAL GUIDE Cal. 5Y19A

9/12

Day jumper section

8 CALENDAR MECHANISM PLATE

Date jumper section

10 DAY DRIVING WHEEL

Set the day driving wheel so that its

claw b is in the area of Marker B on

the hour wheel gurard.

Claw b

11 DATE DRIVING WHEEL

Set the date driving wheel

so that its claw a is touching

Marker A on the main plate.

Marker A

Claw a

13 DAY STAR

14 DATE CORRECTOR WHEEL

15 INTERMEDIATE DATE WHEEL

9 DATE STAR

9 DATE STAR – 15 INTERMEDIATE DATE WHEEL

12 24-HOUR

HAND WHEEL

Marker B

TECHNICAL GUIDE Cal. 5Y19A

10/12

23 TRAIN WHEEL BRIDGE

Lubricate the step rotor pivot and minute wheel

pivot as shown in the illustration. Be sure to

lubricate the cotact point of TRAIN WHEEL

SETTING LEVER and SETTING LEVER.

Lubricate as shown in the

illustration below.

18 DATE CORRECTOR SETTING WHEEL

20 HOUR WHEEL

19 SECOND INTERMEDIATE WHEEL

FOR DATE SETTING

Set the hour wheel so that

any of its eight teeth is in

alignment hollow of the

Marker C on the main plate.

Marker C

Edge of the Teeth

18 DATE CORRECTOR SETTING WHEEL– 20 HOUR WHEEL

Lubricate as shown in the

illustration below before

installing the date corrector

setting wheel.

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