hanski 40 Posted March 1, 2019 So another forum member asked me to look into his Seamaster Chrono as it was stopping intermittently and the chrono wasn’t working quite right. Cool, I can do that, I’ve worked on chrono’s. What I didn’t realize was the movement had an absolute fake “bridge” sandwiched between the real movement and the oscillating weight. I also learned I have no idea how to remove this plate to access the movement. I have identified the two real screws that hold the plate down but that’s it. I can remove those two screws, loosening the plate, but it’s still trapped between the real movement and the oscillating weight Has anyone ventured into disassembling a movement like this? Can anyone give me some insights on getting the oscillating weight and fake “bridge” off? Much appreciated! Share this post Link to post Share on other sites
narikaa 129 Posted March 1, 2019 A fake watchsmith juggling fake screws This forum has everything (best said in a Blues Bros Mall smash voice) But in the spirit of things, maybe the oscillating weight (known as the "Rotor") needs removing Share this post Link to post Share on other sites
Mike R 1,336 Posted March 1, 2019 Yes I would think you remove the rotor, center screws and then the decorative plate/foe bridge Share this post Link to post Share on other sites
Automotiveromance 1 Posted March 1, 2019 That little plate with the 3 holes in the center of the rotor is probably faux and covering the actual screw. Share this post Link to post Share on other sites
hanski 40 Posted March 1, 2019 Yes, thanks guys - but easier said then done. The bearing on the rotor is not secured with a screw on the top side. Im suspecting I need another new tool to do this work - a rotor removal tool: https://www.watchrepairtalk.com/topic/9051-tool-for-removig-oscillating-weight-on-sellita-300/ similar to working on an ETA 2893 or Sellita 330, I would have preferred removing the automatic bridge and accessing any screws for the rotor from the underside. But with this decorative piece of metal in the way, I think the bearing needs to be removed. Theres always another special tool to buy... 2 minutes ago, Automotiveromance said: That little plate with the 3 holes in the center of the rotor is probably faux and covering the actual screw. Aha! I’ll give that a shot. Share this post Link to post Share on other sites
BadPickle 2,747 Posted March 1, 2019 Is it just stuck on with glue? Share this post Link to post Share on other sites
RussP 22,221 Posted March 1, 2019 12 minutes ago, pickledbeetroot said: Is it just stuck on with glue? Very real possibility with a rep. Good call, Stu. Share this post Link to post Share on other sites
deju 1,873 Posted March 1, 2019 Remove the rotor, real screw under that fake plate. Remove the hands and dial. (Dial held on with some ds tape so wedge gently with an exacto knife) dial will pop off. youll then see 3 movement holder tabs holding the movement into the deco plate, remove them and it just falls out Share this post Link to post Share on other sites
MetalMickey 179 Posted March 1, 2019 Tap the Crystal with an ice pick to crack it open and just go in from the frontSent from my iPad using Tapatalk Share this post Link to post Share on other sites
hanski 40 Posted March 1, 2019 3 hours ago, deju said: Remove the rotor, real screw under that fake plate. Remove the hands and dial. (Dial held on with some ds tape so wedge gently with an exacto knife) dial will pop off. youll then see 3 movement holder tabs holding the movement into the deco plate, remove them and it just falls out Thanks! I’ll try this later this evening. I did notice the movement attached to a movement ring. 3 hours ago, MetalMickey said: Tap the Crystal with an ice pick to crack it open and just go in from the front Sent from my iPad using Tapatalk You know, I started there.... 8 hours ago, narikaa said: A fake watchsmith juggling fake screws This forum has everything (best said in a Blues Bros Mall smash voice) But in the spirit of things, maybe the oscillating weight (known as the "Rotor") needs removing I prefer the term hobbyist (said in a snooty British accent) Share this post Link to post Share on other sites
hanski 40 Posted March 2, 2019 Turns out the three-holed bearing plate on the rotor IS the screw. Now we know. With that solved back to work. Share this post Link to post Share on other sites
FoxWilde 155 Posted March 2, 2019 That movement looks a mess to be honest. So much decorative plating. Share this post Link to post Share on other sites
Jibuti 958 Posted March 2, 2019 Well. My w/s in cases like that uses hammer.. A big one.. Sorry, cannot help more. Share this post Link to post Share on other sites