Overhauling A Seiko Bullhead - Full Rebuild - 6138-0040
Weekend Watch Repair
@weekendwatchrepairAbout
This channel is all about bringing old watches back to life—one project at a time. Whether it’s a vintage piece from the bargain bin or a watch that hasn’t ticked in decades, every timepiece gets a shot at redemption here. I’m a hobbyist watchmaker learning as I go, sharing the full process along the way. From teardown and troubleshooting to casework and reassembly, I try to show it all—successes, mistakes, and the unexpected problems that come with working on old mechanical watches. If you're into the technical side of watch repair, enjoy seeing how things work, or just appreciate the art of putting something broken back together, you’ll feel right at home. My goal is to make each video as informative as it is satisfying—sharing tools, techniques, and a few tricks that don’t always make it into other videos. Whether you’re learning the craft or just enjoy the journey, I’m glad you’re here.
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Video Description
Come along as we take on the challenge of reviving a Seiko Bullhead watch that was sold to me by a deceitful eBay seller. From fault finding and disassembly, to the final touches of the rebuild, witness every step of the process and see how we triumph over the seller's dishonesty to create a fully functional and beautiful retro timepiece. Seiko Model # 6138-0040 Behind the scenes of YouTube content, there's dedication and hard work. If you enjoy the channel, I'd kindly ask your consideration in joining this effort on Patreon. Your support keeps the channel going. One hundred precent of all funds received go directly into the channel. With sincere gratitude, thank you so much for your consideration. https://www.patreon.com/WeekendWatchRepair Enjoy the video! Chapters: 0:00 Intro 0:33 Inspection 3:34 Case Removal 5:05 Dial & Hands Removal 7:57 Dial Side Disassembly 16:50 Rear Side Disassembly' 27:37 End Shake & Jewel Inspection 28:43 Pre-Cleaning 29:20 Barrel Bridge Jewel Upgrade 30:07 Cleaning 32:19 Jewel Cleaning & Lubrication 34:36 Balance Inspection 35:34 Barrel Lubrication 37:46 Center Wheel Assembly 38:44 Keyless & Motion Works Assembly 46:22 Hour Recording Chrono Assembly 51:13 Rear Side Wheel Train Assembly 55:24 Rear Side Chrono Assembly 1:08:08 Pallet Fork & Balance 1:12:05 Calendar Works Assembly 1:16:16 Dial & Hands Install 1:20:01 Case & Final Assembly Music from #Uppbeat (free for Creators!): https://uppbeat.io/t/giulio-fazio/manouche-in-belleville License code: ZWCZBO28WY3785TC
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