Seiko 6R15C User manual

[SPECIFICATION]
・3 Hands (Hour, minute and second hand) Movement size
・Diameter
Outside ： φ27.4 mm
・Calendar (Date: Date disk) Casing ： φ27.0 mm
・Height ： 5.25 mm
PARTS LIST / TECHNICAL GUIDE
Cal.6R15C / 6R15D
Item
6R15C / 6R15D
･Instant date setting device
・Second hand stop function
Cal. No.
Crown
position
Manual winding (clockwise only)
Vibrations per hour
Instantaneous rate at T0
(Fully wound condition)
Between +25/-15 seconds per day
(worn on the wrist at temperature-range between 5℃and 35℃)
Isochronous fault
21,600 (6 beats per second)
Date setting (counter clockwise only )
Time setting /Second hand stop function
Normal position
1st click position
Driving system
Automatic winding with manual winding mechanism
Additional function
±15 s/d
±10 s/d
Regulation system
Lift angle of the escapement
Daily rate
Standard rate for
measurement
9 o’clock at
the top
Dial upward
±15 s/d
±10 s/d
2nd click position
Measurement (daily
rate in seconds:s/d)
ETACHRON system
53°
Loss/
Gain
Testing positions
Dial upward
6 o’clock at
the top
1/18
Number of Jewels
23 Jewels
Power reserve
From fully wound to stoppage: Approximately 50 hours

PARTS LIST
FEATURES
SEIKO Automatic Mechanical Cal. 6R15C/D are replacement caliber of Cal. 6R15A/B.
Cal. C is provided with additional Casing spring at 8H position to set into the case for Cal. A and B.
However, Cal.D is not provided with the Casing spring at 8H position. For the movement replacement,
be careful that Cal. D is not installed to the case for Cal. A and B.
Parts difference between Cal.C and Cal.D
Parts code (depends on type)
53
Main plate
0104 164
0104 165
No.
Parts name
6R15C
6R15D
16
Oscillating weight with ball bearing
0509 400
1509 100
43
Center wheel and pinion
0224 203
0224 205
0224 339
0225 420
0225 426
0225 449
36
Fourth wheel and pinion
0241 010
0144 185
0241 382
15
Cal.6R15C/D
2/18
11
Hour wheel
0273 182
0273 184
0273 182
No.
Type
Normal
Special
Special2
Parts name
Cannon pinion
6R15C series
6R15D series
Casing spring position for A and B series
6R15A and B series
Casing spring

PARTS LIST
Type of oil
Oil quantity mark
AO-3(Moebius-A) S-6 NORMAL QUANTITY
S-4
SUFFICIENT QUANTITY
0012 354
Date dial guard screw
0808 183
Date dial maintaining plate
Date dial
0810 183
Date jumper
3/18
Cal.6R15C/D
1
2
3
4

PARTS LIST
Type of oil
Oil quantity mark
AO-3(Moebius-A) S-6 NORMAL QUANTITY
S-4
SUFFICIENT QUANTITY
Hour wheel
0962 025
*Refer to the page 2 for the each parts code Intermediate wheel for date setting E
0012 485
Guard for date corrector setting 
transmission wheel screw
0261 190
Minute wheel and pinion
0817 300
0836 183
Guard for date corrector setting
transmission wheel
0802 183
Date indicator driving wheel
0962 185
Intermediate wheel for
date setting C
Cannon pinion
*Refer to the page 2
0962 023
for the each parts code Intermediate wheel for
date setting B
0737 183
Date setting wheel
Lower shock
absorbing spring
Lower shock
absorbing cap jewel
Lower hole jewel frame
for shock-absorber
Cal.6R15C/D
5
11
12
4/18
6
15
53-2
53-3
53-1
9
10
13
Intermediate date driving
wheel and pinion
7
14
8
*1
*2
*3
*3
*2
*1

PARTS LIST
Type of oil Oil quantity mark
AO-3(Moebius-A)
S-6
NORMAL QUANTITY
S-4
SUFFICIENT QUANTITY
Oscillating weight with ball bearing
*Refer to the page 2 for the each parts code
*Refer to page 11 for setting position
0012 354
Automatic train bridge screw
0012 100
Balance cock screw
0191 183
Automatic train bridge
0514 183
0171 354
Balance cock
0012 919
Ratchet wheel screw
0285 051
Ratchet wheel
0012 354
Pallet bridge screw
0161 300
Pallet bridge
0310 185
0301 009
Balance complete Pallet fork
with stud
Upper hole jewel frame
for shock-absorber
23-3
Upper shock
absorbing spring
Upper shock absorbing
cap jewel
Cal.6R15C/D
5/18
24
16
17
18
19
Second reduction wheel and pinion
25
26
27
20
21
22
23
23-1
23-2
*2
*3
*1
*1
*2
*3
whole tooth