Seiko 6105A Technical Data and Parts List
Technical data and parts list for the Seiko caliber 6105A automatic wristwatch movement, a 17-jewel workhorse design found in countless sports and dive watches of the era. Comprehensive exploded-view diagrams cover the barrel and train wheel bridge, center wheel, balance cock, third wheel, minute wheel, hour wheel, clutch wheel, and setting lever, as well as all jeweled pivot assemblies, dial, hands, case components, and fasteners. This manual is essential for anyone servicing or rebuilding the 6105A. Technical specifications document a 27.00 mm case diameter, 5.15 mm maximum height, 21,600 vibrations per hour beat rate, automatic winding mechanism with sweep second hand, instantaneous date change, and shock-resistant balance assembly. Includes detailed parts breakdown to support repair, maintenance, and restoration work on these reliable vintage movements.
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