Seiko 4R15A Guida rapida

PARTS LIST /TECHNICAL GUIDE

Automatic Cal. 4R15A/4R15B/4R16A/4R16B

[SPECIFICATIONS]

1/19

Item Cal. No. 4R15A/4R15B/4R16A/4R16B

22 jewels

Automatic winding

Between -35 and +45 seconds

Automatic winding function

* Day and date correction function

*Day and date correction

Time setting (Hour and minute)

Free

  

    

   

   

 

  

    















Measurement

(daily rate in













  



Movement

[Bridge side] [Calendar side]

Movement size

53 °

Daily rate worn

   



 

5 °C and 35 °C)

Standard rate

for measure-

ment 



 

T24 (CH)





   

from fully wind



 

 

Driving system

Additional function

Crown operation

Loss/Gain

Regulation system

Number of jewels







Lift angle of the escapment

Vibration per hour

Continuous operating time

SPECIFICATIONS

2/19

Cal. 4R15A/4R15B/4R16A/4R16B





  

  

 

 

FEATURES

CHARACTERISTICS OF A MECHANICAL WATCH

 

  

 

  

 

 

 

 

 







PARTS LIST Cal. 4R15A/4R15B/4R16A/4R16B

3/19

  





PARTS DIFFERENCES BETWEEN A SERIES AND B SERIES



4R15A



4R15B



5  







DATE DISK (4R15) *



- -

DATE DISK (4R15) *





DATE DISK (4R15) *





 - -

 - -







9







 





12 





13 





 





 



  

35 







 





45 -







 







54 





55 





 





 

 

 

Cal. 4R15A/4R15B/4R16A/4R16B

PARTS LIST

4/19

0963300

SNAP FOR DAY DISK

0160***

DAY DISK WITH DAY STAR

0989070

DAY CORRECTOR WHEEL

0012354

DATE DISK GUARD

SCREW A (3pcs)

CAL A: 0016705

CAL B: 0012354

DATE DISK GUARD SCREW B (1 pce)

CAL A: 0808300

CAL B: 0808310

DATE DISK GUARD

7DATE DISK

CAL A: 0810030

CAL B: 0810183

DATE JUMPER

CAL A: 0737300

CAL B: 0737183

CALENDAR CORRECTOR

SLIDNG INTERMEDIATE

WHEEL

CAL A: 0271483

CAL B: 0273183

HOUR WHEEL

0817300

11 INTERMEDIATE DATE

WHEEL

CAL A: 0802300

CAL B: 0802183

DATE DRIVING WHEEL

MINUTE WHEEL

0225005

CANNON PINION

4408170

HOLDING RING FOR DIAL

0012420

LOWER BRIDGE FOR THIRD

WHEEL SCREW

CAL A: 0436300

CAL B: 0436183

LOWER BRIDGE FOR THIRD

WHEEL

SHOCK ABSORBER

17 0014577

SHOCK ABSORBING

SPRING

0011220

SHOCK ABSORBING CAP

JEWEL

19 0014295

HOLE JEWEL FRAME FOR

SHOCK ABSORER

50 -2

0878*** or 0148***

CAL A: 0267006

CAL B: 0261183

[CALENDAR MECHANISM]



214 



         

        

             

             

    

    

PARTS LIST Cal. 4R15A/4R15B/4R16A/4R16B

5/19

[BALANCE AND ESCAPEMENT] [WINDING MECHANISM (1)]

BALANCE COCK

SCREW

0012420

BALANCE COCK WITH

REGULATOR

0171197

BALANCE COMPLETE

0310197

PALLET COCK SCREW

0012354

PALLET COCK

0161302

PALLET FORK

0301009

OSCILLATING WEIGHT

CAL A: 0436300

CAL B: 0436183

SECOND REDUCTION

WHEEL SCREW

0012539

RACHET WHEEL SCREW

0012919

RACHET WHEEL

0285051

SECOND REDUCTION

WHEEL

0514002

SHOCK ABSORBER

25 0014577

SHOCK ABSORBING SPRING

0011220

SHOCK ABSORBING CAP

JEWEL

27 0014295

HOLE JEWEL FRAME

FOR SHOCK ABSORER













 



 



Cal. 4R15A/4R15B/4R16A/4R16B

PARTS LIST



CLICK

0381004

FOURTH WHEEL

0241010

BARREL COMPLETE

(WITH MAINSPRING)

CAL A: 0201267

CAL B: 0201164

THIRD WHEEL

0231007

ESCAPE WHEEL

0251013

CENTER WHEEL BRIDGE

SCREW

0012354

CENTER WHEEL BRIDGE

0122302

CENTER WHEEL WITH

CANNON PINION

CAL A: 0224086

CAL B: 0224183

SETTING LEVER JUMPER

SCREW

0012168

SETTING LEVER JUMPER

0388177

YOKE

0384070

SETTING LEVER

CAL A: 0383070

CAL B: 0383178

CLUTCH WHEEL

CALENDAR CORRECTOR

1ST INTERMEDIATE WHEEL

0962008

SETTING STEM

0351***

BARREL AND TRAIN WHEEL

0012420

BRIDGE SCREW

BARREL AND TRAIN WHEEL

BRIDGE

CAL A: 0112388

CAL B: 0114178

FIRST REDUCTION

WHEEL

0511010

PAWL LEVER

CAL A: 0831077

CAL B: 0831183

FIRST REDUCTION WHEEL

HOLDER

0836002

MAIN PLATE

CAL A: 0100326

CAL B: 0104181

HOLD SPRING FOR

ESCAPE WHEEL

0015703

CAP JEWEL FOR ESCAPE WHEEL

0011220

HOLD SPRING FOR

THIRD WHEEL

0015703

CAP JEWEL FOR THIRD WHEEL

0011220





50 -1

CENTER WHEEL

0221086

50 -2

CANNON PINION

0225005

CAL A: 0282070

CAL B: 0282183

[WINDING MECHANISM (2), GEAR TRAIN MECHANISM AND SETTING MECHANISM]

   refer to

 

PARTS LIST Cal. 4R15A/4R15B/4R16A/4R16B



 

 

REMARKS

14 

 

 



4408170 4408171

●How to ﬁnd the correct parts, if not determined by 4 digit caliber number

2    

 





 

             

                



Cal. 4R15A/4R15B/4R16A/4R16B

PARTS LIST



● How to discrimianate resembled parts

   

 

0012 919

0012 539

0012 354

0016 705

0012 420

0012 168

21 Second reduction

  

 

  

 

screw

4 Date dial guard

screw A

  

  

 

 

  

   

  

 

34 Barrel and train

  

PARTS LIST Cal. 4R15A/4R15B/4R16A/4R16B

9/19











Balance







Balance (roller jewel)

Total



  



  

22 jewels

Location of the jewels

Cal. 4R15A/4R15B/4R16A/4R16B

PARTS LIST



●Tools and consumables required for disassembling/reassembling

• MoveMent holder

 

• Watch oils

 

 

S-4

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