pv007

You are right master The Zigmeister, not all people has the chance (and the skill) to have and use a lathe and this operation could be really different difficult when you see the size of the Reversing Wheel and the price for the ETA part is really expensive ... I don't understand why factory does not sell spare parts of their A7750 especially the parts we cannot find ... Someone, someday should try to get this wheel as it becoming really common' these days I received 5 watches with this problem and had a very hard discussion with my seller because he said that I was lying to him until I sent one day a video with an explaination on how I fixed the problem ... I repaired 2 of them and sent back the rest because of the lack of spare parts...

Fantastic info very useful Thank you so much

I have to add to my tips up Then after all that cleaning, re-assemble all the stuff back and watch out for the rodico don't leave some of it under the bridge when you put it back. Remove the rodico, you will certainly leave some first then you will get the tricks

Finally Francisco the tutorial Thank you very much ! I can add some stuff, I had many problem using this method indeed the reversing was still gummed up and I put it OneDip and MAGIC everything works after that Francisco gave me the idea of that and it was a nice idea as OneDip add a sort thin "moisture" protection... Francisco i posted a question somewhere but I found no answer for it: The ETA reversing wheel has to be cut down as pivot is too big but I noticed that the ETA Bridge is not really different from the Asian wheel but the whole (jeweled) that hold the reversing wheel pivot which is much bigger... Do you think by adding a new ETA bridge the ETA reversing could fit ? that could be a nice thing to try Because I already asked all my connection for reversing wheel parts and it is not possible to get an Asian one, you need to order the whole movement the one who is going to sell one day reversing wheel will certainly earn a lot of money, I would buy 20 of theses ! This topic has to be pinned Something I could add in order to help for the noob like me correct me if I'm wrong You can get rid of tilting pinion assembling using this method but you have to be really precise Remove the rotor Remove the clutch spring Remove the Hammer spring Then put rodico just near the bridge in order to hold down the clutch (use high end rodico as you don't want to leave some rest when you will remove it) then you can remove very carrefully the bridge and you will have have your clutch hold by rodico Something I must add I cleaned the bridge too in order to make it worked ! After all that if it's not working then send back your watch as I have with one of mine no reversing wheel left... Cleaning/lubrificate worked for on 2 of 3 non working watches

I will try the OneDip Method because I'm quite sure that I correctly assembled everything, put the right oil in the right place put the good quantity of oil with special oil stick as well nicely clean the stuff with a special proper cleaning solution (that stinks hell, lol) But I'm sure that the Reversing Wheel is really stucked and I have to try to find a trick to make it smoothed like hell I ordered the OneDIp have to wait for it to test this method ... Thank you for your nice advices Freddy

thx Freddy for the heads up, your advice are always welcomed Yes I disassemble, clean and lubricate (with the correct oil/ 9010 moebius and D5) the entire auto-wind module but not the bridge (which I did it last time I had problem with another movement) :/ Do you thing I have to oil the Rerversing Wheel as usually it's not oiled (treated ETA) where and which oil I would have to use ?... For the rest, yes the RW is installed in the correct direction. (the very flat side down the side without the circled hole) What do you mean by test the module to be sure all wheels spin before reinstalling it onto movement ( because I test that but with the bridge assembled and yes all the wheel are free spinning (Reversing wheel, Reduction wheel, Ratchet and drinving wheel) and the click spring is correctly placed engaged in the RW (no back wheel of the rotor after wind,...) Could you precise your method, do you want me to test it before placing back the bridge or something else ? Something I can tell you is I swapped for another Reversing wheel on another watch and it suddenly worked ... I changed back and was same problem again ... Don't know if it's was only a chance because I correctly installed it or if my Reversing wheel was totally broken or fullfiled by dirt (I'm still not able to clean)... Have you ever experience this problem and fix it by clean/oil auto-wind module and with success ? Next time I'll try something else: 1- Clean 20min Reversing Wheel, Rotor Gear, Reduction wheel and the bridge in ultrasonic 2- Put Reversing wheel in OneDip solution to clean it and give it a very thin "protection lubrificate" 3- Oil and reassemble everything back

The ETA should fit but you will have to give a try ... you can order at www.cousinuk.com ( really serious company) If you want to remove it first 1/ Take off the rotor 2/ Take off the very thin and small clutch spring if you don't want to loose it (normally you have to take it off after the hammer but I prefer to do it first) 3/ Take off the hammer spring but without removing the automatic device bridge * use a wood stick (pegwood) or a brass tweeter (or Stainless one ...) and use the very small hole at the very right end to bring it back from the bridge then you will able to take off do it carrefully To install it you have to get everything assembled but rotor and clutch spring Just put the two left hole in their movement feet then slowly bring back the hammer spring to put it under the Automatic bridge with a tweeter or a pegwood You have to do this very carefully and slowly

i dont have it at home but if will try to order of and use it while waiting for a brand new and working reversing wheel coming from a movement that I will order soon Do you think I can order 21600 bph and take the RW from it or I really need to a Reversing wheel from a 28800 bph ? Thank you for the help I was thinking about something else We know that eta reversing wheel does not fit because pivot is too large but does someone try to use eta bridge i noticed that the eta one is like the asian but with a bigger hole ( jeweled) for the rw that could make the tricks ?...

I receive another one with the same problem... Rotor moves when you turn the crown Hehe I think I'm the guy with the world record of turning rotor ... do you think it could come from the extreme cold weather during shipping ...? This time I don't have anymore reversing gear left... So I cannot fix it... I tried to clean the reversing wheel as well as the reduction wheel in an utltrasonic bath for 20 minutes. I re-assembled everything again, precisely oiled but still have the same problem ... rotor moves when I turn the crown Any tips for me to try masters ? Do you think it may come from a reversing click spring too loose ? I checked the spring and it is correctly fitted into the reversing wheel and it make its job when I turn the crown and stop winding ... HELP ! Question: I feel a strange thing when I manually wind the watch as it is not rotating normaly there is a sort of a very small "gap" when I turn the crown... hard to describe that ....lol

I totally agree this video is only good if you want to show the step by step method however there is not adjustments, no checks... as soon as the hammer spring is put nothing is checked ... reversing wheel..click spring... chrono .... etc... watch out if you want to follow only this method ... Someone should post one day a step by step tutorial with pictures that would be nice ! hehe

Thank you for your reply masters ! I fixed my stuff ... here is what I have done ... I dissasembled the first stage of the watch only, took the reversing wheel as well as the reduction wheel... it was filled by dirt... I took those two wheels and the chronograph bridge and put them in a subsonic bath for 3 minutes I reassembled the movement put ETA OIL as described in eta tutorial.... everything was well assemble but the rotor was still moving when I turned the crown ... I dissasembled again and this time I changed the reversing wheel (I noticed it was scratched in the upper left side of it ) with another Asian 7750 reversing which I had from a non working watch ... I reassembled and now everything works, the rotor does not move anymore when you turn the crown... this reversing wheel is quite bad shapped don't know why they have used eta style reversing wheel ... Anyway maybe one last question for you masters... The only problem I still have but it's not really a problem... (Ihave this problem since I received the watch) 1/ I don't hear nicely the click ... click coming from the ratchet wheel and its string ... 2/ There is still some bad friction when you manually turn the crown for winding ... (is it a problem coming from the ratchet wheel or crown wheel or maybe something else... ?) Thank you for your support !

thank you for your input francisco ! I tell you what, that does not smell good ... hope it will change And yes Pt hope you are right

good catch

I confirm also ... He is slow like hell these days around 3-5 days for an answer ... hope he will change that because it is not really fun .... especially when you are in a hurry

This is not true at all ... Eu custom can make random check on every package they want even if it's coming within the EU (and I can tell you something that they make it much often than you could all imagine) don't be so relax with custom they know a lot of thing ...