Seiko 4R35B User Manual

PARTS LIST / TECHNICAL GUIDE
Automatic Cal.4R35B／4R36A
[SPECIFICATION]
(The below figs. are for Cal.4R36A)
Driving system
Automatic winding with manual winding mechanism
・3 hands (Hour, Minute and
・3 hands (Hour, Minute and Second
Time indication Second hands) hands)
・Date indication
・Day and Date indication
・Instant date setting device ・Instant date setting device
Additional function
・Second hand stop function ・Instant day setting device
・Second hand stop function
Crown Date setting (counterclockwise)
Date setting (counterclockwise),
operation Day setting (clockwise)
Vibration per hour
21,600 (6 beats per second)
Between +45 and -35 seconds per day
(worn on the wrist at temperature range between 5°C and 35°C)
Loss/Gain Instantaneous rate at T0 Isochronous fault
（Fully would condition)
Testing positions
Dial upward
6 o'clock 9 o'clock
Dial upward
at the top at the top
Measurement
(Daily rate in
± 20 s/d ± 30 s/d ± 30 s/d
±30 s/d
seconds：s/d）
Regulation system ETACHRON system
Lift angle of the escapement 53°
Power reserve
Continuous operating time From fully wound to stoppage: Approximately 41 hours
Number of Jewels
1/18
1st click
4R35B
4R36A
23 Jewels
24 Jewels
Daily Rate
Cal. No.
4R35B/4R36A
Item
Normal position
Manual winding (clockwise only)
Standard rate
for measurement
2nd click
Time setting (Hour and Minute) / Second hand stop function
・3 Hands (Hour, Minute and Second hands)
・Day and Date indication
Movement Size
・Diameter Outside ： φ27.4 mm
Casing ： φ27.0 mm
・Height ： 5.32 mm

Seiko 4R35B Specifications

General

Movement Type	Automatic
Jewels	24
Power Reserve	41 hours
Hacking	Yes
Manual Winding	Yes
Functions	Hours, minutes, seconds, date
Diameter	27.4 mm
Height	5.32 mm
Accuracy	-35/+45 seconds per day
Rotor Direction	Bi-directional
Vibrations Per Hour	21, 600 bph

Summary

Parts List and Components

Movement Features and Remarks

Details general features and parts differences between calibers.

Calendar Mechanism Components

Lists and illustrates parts for the calendar mechanism.

Balance and Escapement Parts

Identifies components of the balance and escapement system.

Winding Mechanism Components

Lists and illustrates parts for the winding mechanism.

Setting Mechanism Components

Identifies parts of the watch setting mechanism.

Specific Part Details and Remarks

Provides remarks on specific parts like oscillating weight and winding stem.

Part Identification and Tools

Guides on identifying parts and lists necessary tools.

Technical Guide Procedures

Oiling Spot Instructions

Details specific oiling locations for watch components.

Disassembling and Assembling Mechanisms

Step-by-step guide for taking apart and putting together watch movements.

Balance Complete Removal and Installation

Instructions for safely removing and installing the balance complete with stud.

Regulating Isochronous Fault

How to adjust the balance-spring position to correct isochronous faults.

Water Resistance Testing

Procedures and standards for testing watch water resistance.

Accuracy Testing and Duration

Methods for measuring watch accuracy and power reserve duration.

Operation Manual Procedures

Manual Winding Procedure

Instructions for manually winding the watch mainspring via the crown.

Setting Time and Date

Step-by-step guide for setting time, date, and day for both calibers.