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PARTS LIST / TECHNICAL GUIDE
[SPECIFICATION]
Item
・3 Hands (Hour, minute and second hand)
・Calendar (Date: Date disk)
Driving system
Additional function
Normal position
Crown
1st click position
position
2nd click position
Vibrations per hour
Daily rate
Loss/
Gain
Standard rate for
measurement
Regulation system
Lift angle of the escapement
Power reserve
Number of Jewels
Cal.6R15C / 6R15D
Cal. No.
Automatic winding with manual winding mechanism
･Instant date setting device
・Second hand stop function
Manual winding (clockwise only)
Date setting (counter clockwise only )
Time setting /Second hand stop function
21,600 (6 beats per second)
Between +25/-15 seconds per day
(worn on the wrist at temperature-range between 5℃ and 35℃)
Testing positions
Measurement (daily
rate in seconds:s/d)
ETACHRON system
53°
From fully wound to stoppage: Approximately 50 hours
23 Jewels
6R15C / 6R15D
Movement size
・Diameter
Outside ： φ27.4 mm
Casing ： φ27.0 mm
・Height
： 5.25 mm
Instantaneous rate at T0
(Fully wound condition)
6 o'clock at
Dial upward
the top
±10 s/d
±15 s/d
1/18
Isochronous fault
9 o'clock at
Dial upward
the top
±10 s/d
±15 s/d
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Related Manuals for Seiko 6R15C
Summary of Contents for Seiko 6R15C
- Page 1 PARTS LIST / TECHNICAL GUIDE Cal.6R15C / 6R15D [SPECIFICATION] Cal. No. 6R15C / 6R15D Item ・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 Driving system Automatic winding with manual winding mechanism ･Instant date setting device...
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Page 2: Parts List
Cal.6R15C/D 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. - Page 3 PARTS LIST Cal.6R15C/D Type of oil Oil quantity mark AO-3(Moebius-A) NORMAL QUANTITY SUFFICIENT QUANTITY 0012 354 Date dial guard screw 0808 183 Date dial maintaining plate Date dial 0810 183 Date jumper 3/18...
- Page 4 PARTS LIST Cal.6R15C/D Type of oil Oil quantity mark AO-3(Moebius-A) NORMAL QUANTITY 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...
- Page 5 PARTS LIST Cal.6R15C/D Type of oil Oil quantity mark AO-3(Moebius-A) NORMAL QUANTITY 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...
- Page 6 PARTS LIST Cal.6R15C/D Type of oil Oil quantity mark AO-3(Moebius-A) NORMAL QUANTITY SUFFICIENT QUANTITY 0012 100 Barrel and train wheel bridge screw 0511 010 First reduction wheel 29-1 Cap jeweled spring *Refer to page 10 for oiling spot *Refer to page 12 for...
- Page 7 PARTS LIST Cal.6R15C/D Type of oil Oil quantity mark AO-3(Moebius-A) NORMAL QUANTITY SUFFICIENT QUANTITY 0012 354 Center wheel bridge screw 0122 302 Center wheel bridge 0251 300 Escape wheel and pinion Center wheel and pinion *Refer to the page 2 for the each parts code...
- Page 8 Roller jewel Total 23 jewels Remarks The correct parts for the following are determined based on the design of the cases. Refer to "SEIKO Watch Parts Catalogue (SEIKO WATCH SERVICE SITE)" to choose corresponding parts. ・ Holding ring for dial ・...
- Page 9 PARTS LIST Cal.6R15C/D ● Tools and consumables required for disassembling/reassembling Movement holder ● UNIVERSAL MOVEMENT HOLDER (S-682) Watch oils ● SEIKO Watch grease S-6 and S-4. Watch oil AO-3 (or Moebius A) AO-3 9/16...
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Page 10: Technical Guide
TECHNICAL GUIDE Cal.6R15C/D Type of oil Oil quantity mark AO-3(Moebius-A) NORMAL QUANTITY SUFFICIENT QUANTITY 1. Oiling spot Barrel and train wheel bridge (Top side) Barrel and train wheel bridge (back side) Note: After lubrication, set lower plate for barrel and train wheel bridge & screw. - Page 11 TECHNICAL GUIDE Cal.6R15C/D Stop lever Stop lever Main plate Contact part of main plate and balance stop lever 2. Setting position of Oscillating weight When fixing the Oscillating weight, an alignment with the First reduction wheel is necessary in order to wind the Mainspring most efficiently. Rotate the First reduction wheel manually until its hole aligns with the guide pin for Balance cock (gilt dot) and set the Oscillating weight vertically at the stem side, and then tighten the screw.
- Page 12 TECHNICAL GUIDE Cal.6R15C/D 4. Disassembling / assembling of the First reduction wheel << Disassembling >> << Assembling >> First reduction wheel Reduction wheel holder Barrel and train wheel bridge (back side) 5. Disassembling / assembling of the Ratchet sliding wheel spring.
- Page 13 TECHNICAL GUIDE Cal.6R15C/D 6. Accuracy adjustment Regulator Regulator pin Stud support Note: ・Regulator … Time adjustment ・Stud support … Beat error adjustment (+) side (-) side ・Regulator pin … Gap adjustment of balance spring and regulator pin Anticlockwise rotation No clockwise rotation...
- Page 14 TECHNICAL GUIDE Cal.6R15C/D ● How to remove and install the Balance complete with stud How to remove How to install 1. Initial phase 1. Initial phase Move the stud support toward the arrow marked Set a new balance complete with stud to the direction until it touches the balance cock.
- Page 15 TECHNICAL GUIDE Cal.6R15C/D ● How to regulate the isochronous fault by adjusting the position of the balance-spring This caliber has the Etachron system for fine regulation of the isochronous fault. The watch shows a gain trend as amplitude decreases and loses time badly near the end of its useful power reserve.
- Page 16 OPERATION MANUAL Cal.6R15C/D 【6R15 operation manual】 1. How to manually wind the mainspring by turning the crown 1) Slowly turn the crown clockwise (in the 12 o’clock direction) to wind the mainspring. 2) Continue to turn the crown until the mainspring is sufficiently wound. The second hand will start moving.
- Page 17 TECHNICAL GUIDE Cal.6R15C/D ●Water resistance test Check the water resistance according to the designated specification of the watch Marking on the case back Test method Applied pressure Air leak test WATER RESISTANT(WATER RESIST) 3 BAR WATER RESIST 5BAR 5 BAR...
- Page 18 TECHNICAL GUIDE Cal.6R15C/D ● Accuracy test Measure the rate in three different positions within 30 minutes after the watch is fully wound up (wait approximately for 5 minutes after winding up in order to get a stable oscillation of the balance) and make sure the value shows within the range in the table below.