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I had it in a little jar in a double bath at 60ºC in a more or less super saturated solution - some crystals came back out of solution as it cooled. Heat was really the trick - When I started at room temperature I could see a bubble form on top of the old stem and just sit there but when heated there was a constant stream of bubbles -
Sorry to bring this one up again: You mention you got new springs, dare I ask where? I haven't been able to find any but those for the manual version. I cleaned and wound the mainsprings in my 2427 using a modified M6 washer and the crank from a winder, but they were a bit coned, have a bit of a kink in the spring where it meets the end of the bridle and the resultant amplitude is quite poor. 250, maybe a bit higher, on a full wind. Confirmed that this is how the yoke should look when taking apart a 2428 for parts. I saw a post that you've left the forum. I hope that's not the case. You've helped me more than once and it was very much appreciated. -
I spent a few hours with this 3135 Rolex yesterday, and as we can all see, the reason the date and time can't be set is obvious. Had I known this—I was expecting a dislocated yoke—I would have refrained from running it, as we have no idea where those broken-off teeth are located inside the movement. It could very well explain the funny timing machine readings. Hopefully, the damage is limited to the first (there are two) setting wheel, but we shall see as the disassembly continues. It's a good sign that the sliding pinion teeth seem to be intact. It also raises the question of how something like this can happen. Perhaps too little or the wrong type of grease in the cannon pinion, and when it became difficult to set the time, the crown was turned with force and too quickly. That reminds me of another movement (years ago) where the cannon pinion was way too tight, and I still tried to set time, which broke off the teeth on the minute wheel. However, it was a scrap Vostok, so no real harm done. -
By Neverenoughwatches · Posted
Can anyone help with the identity of this movement please. Books i have searched up to now include 1 and 2 of Bestfit 1965, Bestfit 101 1956, Flume 1958 and 1972 and catalogue officiel 1955. 24mm plate which lands around 10.5 - 10.75 lignes -
Welcome to the forum. Here's a good site that in your case shows the original along with the modern alternative. https://www.emmywatch.com/db/movement/gruen--490ss/
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