Seiko 8R48A Technical Manual

12, • Movement holder UNIVERSAL MOVEMENT HOLDER (S-682) • Watch oils SEIKO watch grease S-6 and S-4. watch oil AO-3 (or Moebius A) S-6 AO-3 S-4 Cal. 8R48A/8R49A PARTS CATALOGUE 12/24 ● Tools and consumables required for disassembling/reassembling …

17, Hour and minute counting wheel need to be inclined when setting. • Second transmission wheel and minute transmission wheel should be set parallel to main plate. • Once the second transmission wheel and minute transmission wheel are detached, be sure to replace them with new ones instead of …

16, 29 26 27 46 35 40 41 30 37 46 35 27 30 37 46 26 TECHNICAL GUIDE Cal. 8R48A/8R49A 16/24 35 Operating lever B 2. The setting position of the spring and lever etc. 30 Hammer operating lever A 46 Operating cam 41 Chronograph couling le…

13, Seiko 8R48A 1. Oiling spot TECHNICAL GUIDE Cal. 8R48A/8R49A 13/24 ■ Note 1: (1) 70 Barrel and train wheel bridge with hole jewel frame 70 Barrel and train wheel bridge with hole jewel frame (back side) After oiling *2, set lower plate for barrel and train wheel bridge & screw. 76 Lower plat…

1, Movement [Bridge side] [Calendar side] Cal. 8R48A Cal. 8R49A PARTS LIST / TECHNICAL GUIDE Automatic Chronograph Cal. 8 R48A/8R49A [SPECIFICATIONS] 1/24 Item Cal. No. 8R48A/8R49A 34 jewels Automatic winding with manual winding mechanism + 25 / - 15 sec…

4, Cal. 8R48A/8R49A PARTS CATALOGUE 4/24 19 0491 182 Dial washer C 22 0886 183 Minute counter intermediate wheel and pinion B 24 0902 *** Minute counting wheel * Refer to page 11 for location of jewels. 20 0491 181 Dial washer B Note: Refer to the page 19 for distinguishing the …