Advertisement
Quick Links
PARTS CATALOGUE / TECHNICAL GUIDE
Cal. 7S25B, 7S35B, 7S55B
[SPECIFICATIONS]
Brand
Cal. No.
Item
Movement
Outside diameter
Movement
Casing diameter
size
Height
Time indication
Vibration per hour
Additional mechanism
function
Number of jewels
The difference between A
Cal.and B Cal.
* Cal.7S watches are changed
from caliber "A" to caliber "B"
in October 2006 production.
According to the change, we
would like you to pay attention
to the design of the balance
s t a f f w h e n r e p a ir in g t h o s e
watches.
7S25B
l 3 hands (hour, minute and second hands)
2,600 Hz/hour (6 beats per second)
l Automatic winding
l Date calendar
l Date correction function
7S25A/ 7S35A/ 7S55A
Refer to "PARTS CATALOGUE/
TECHNICAL GUIDE
Cal. 7S25A,7S35A,7S55A."
/8
SEIKO
7S35B
(x .5)
Ø 27.4 mm
Ø 27.0 mm
4.9 mm
7S25B :2 jewels
7S35B, 7S55B :23 jewels
7S25B/ 7S35B/ 7S55B
Refer to "PARTS CATALOGUE/
TECHNICAL GUIDE
Cal. 7S25B,7S35B,7S55B."
7S55B
These sections are
different from A Cal.
Advertisement
Related Manuals for Seiko 7S25B
Summary of Contents for Seiko 7S25B
- Page 1 PARTS CATALOGUE / TECHNICAL GUIDE Cal. 7S25B, 7S35B, 7S55B [SPECIFICATIONS] Brand SEIKO Cal. No. 7S25B 7S35B 7S55B Item Movement (x .5) Outside diameter Ø 27.4 mm Movement Ø 27.0 mm Casing diameter size 4.9 mm Height Time indication l 3 hands (hour, minute and second hands)
-
Page 2: Parts Catalogue
PARTS CATALOGUE Cal. 7S25B, 7S35B, 7S55B Disassembling procedures Figs.: 1 rj Reassembling procedures Figs.: rj Lubricating: Types of oil Oil quantity AO-3 (Moebius A) Liberal quantity SEIKO Watch Oil S-6 Normal quantity SEIKO Watch Oil S-4 Small quantity 1 Hour, minute, and second hand 2 Dial 3 Date dial guard screw A (3 pics) 002 354 4 Date dial guard screw B ( pic) - Page 3 Fourth wheel & pinion 024 00 eg Barrel complete (with mainspring) 020 024 eh Third wheel & pinion 023 070 (7S25B) 023 007 (7S35B, 7S55B) Diashock ej Escape wheel & pinion 025 03 ek Center wheel bridge screw w;...
- Page 4 PARTS CATALOGUE Cal. 7S25B, 7S35B, 7S55B SCREW PARTS Parts name Parts name Parts code Parts code Center wheel bridge screw Pallet cock screw Ratchet wheel screw Date dial guard screw A 0012 354 0012 919 Balance cock screw Barrel and train wheel Second reduction wheel and...
-
Page 5: Technical Guide
The dial holding spacer used differs depending on the casing model. Refer to "SEIKO Watch Parts Catalogue (SEIKO WATCH SERVICE SITE)." rj Winding stem 035 *** * The winding stem used differs depending on the casing model. Refer to "SEIKO Watch Parts Catalogue (SEIKO WATCH SERVICE SITE)."... - Page 6 TECHNICAL GUIDE Cal. 7S25B, 7S35B, 7S55B The following description is only applicable to 7S caliber watches. I. REMARKS ON DISASSEMBLING AND REASSEMBLING qj Oscillating weight (with ball bearing) The inside screw can be found in the inside ring of the ball bearing. Use the big screwdriver to screw sufficiently tight. When setting the oscil- First reduction wheel lating weight, align the hole of the first reduction...
-
Page 7: How To Remove
TECHNICAL GUIDE Cal. 7S25B, 7S35B, 7S55B :HOW TO REMOvE AND INSTALL THE BALANCE STAFF w; - ws How to remove How to install Initial phase Initial phase Set the balance complete with stud and balance cock to Set a new balance complete with stud to the main plate. the main plate. Set the balance cock and tighten the balance cock screw. - Page 8 TECHNICAL GUIDE Cal. 7S25B, 7S35B, 7S55B HOW TO ADJUST THE HAIRSPRING . Names of the parts A: Stud B: Regulator arm C: Regulator pin D: Stud support 2. Ro t a te B to f ine - tun e the position of the outer end of the hairspring which passes...