Guest Posted June 22, 2013 Report Share Posted June 22, 2013 This is the 7750 for the IWC Portuguese Chorno. I think I may have pressed the stem release or inserted the stem way too hard when installing. Now the stem can't lock in place. It pulls out easily Here's a photo of the front of the movement. I notice that tube thingy (red arrow) is really loose when the stem fiddles with it. Is that vertical bar (yellow arrow) supposed to lock it in place? Is there an easy fix to this? Thanks. Quote Link to comment Share on other sites More sharing options...
Guest Posted June 22, 2013 Report Share Posted June 22, 2013 Quote Link to comment Share on other sites More sharing options...
Guest Posted June 22, 2013 Report Share Posted June 22, 2013 Quote Link to comment Share on other sites More sharing options...
Rolexman Posted June 22, 2013 Report Share Posted June 22, 2013 Where is your winding pinion???? Answer that question and you solve the problem Quote Link to comment Share on other sites More sharing options...
Guest Posted June 22, 2013 Report Share Posted June 22, 2013 Do you think by pressing the stem release too hard it dislodged the winding pinion and it got lost somewhere in there? Quote Link to comment Share on other sites More sharing options...
Guest Posted June 23, 2013 Report Share Posted June 23, 2013 Well, I opened it up and couldn't find the winding pinion. Don't know where it went. Does anyone have a spare to sell? Will a part 410 ETA winding pinion be universal for all movements? Quote Link to comment Share on other sites More sharing options...
Rolexman Posted June 23, 2013 Report Share Posted June 23, 2013 YEShttp://item.mobileweb.ebay.nl/viewitem?index=0&sbk=1&nav=SEARCH&itemId=111086359485 Quote Link to comment Share on other sites More sharing options...
SSTEEL Posted June 23, 2013 Report Share Posted June 23, 2013 If your carpet/floor has not been hoovered since you opened this up, you maybe able to find it using a light/torch, pointing the light almost horizontally, whilst on your hands and knees, if its there, you may see a small sparkle/reflection. This is what I resorted to when I have dropped a small part. Quote Link to comment Share on other sites More sharing options...
flyr Posted June 23, 2013 Report Share Posted June 23, 2013 You can also use a vacuum with a nylon stocking over the nozzle (worked for me) Good luck! 1 Quote Link to comment Share on other sites More sharing options...
SSTEEL Posted June 23, 2013 Report Share Posted June 23, 2013 Yes, great tip that, have used it in the past, and it works! Quote Link to comment Share on other sites More sharing options...
Guest Posted July 5, 2013 Report Share Posted July 5, 2013 Thanks guys. I had to order a new ETA one. Hopefully it's a perfect match. I tried your suggestions on trying to find it on the floor but was unable to. I find it best to do it at night, with all the lights out. Get down on your hands and knees (like Rolexman suggested) and look horizontally. Unfortunately, I found other things I wish I hadn't. To prevent a further mishap. Stem is best removed while in winding position so the winding and sliding pinion are locked together and won't slip out. Is that correct? What are the other causes for messing up the keyless? Will pressing the stem release too hard do something troubling? And I read when re-inserting the stem, the stem release button doesn't have to be depressed. You just insert the stem while slowly rotating and it ought to 'snap' back in? Quote Link to comment Share on other sites More sharing options...
SSTEEL Posted July 5, 2013 Report Share Posted July 5, 2013 (edited) If your carpet/floor has not been hoovered since you opened this up, you maybe able to find it using a light/torch, pointing the light almost horizontally, whilst on your hands and knees, if its there, you may see a small sparkle/reflection. This is what I resorted to when I have dropped a small part. Get down on your hands and knees (like Rolexman suggested) and look horizontally. *Cough* Edited July 5, 2013 by SSTEEL Quote Link to comment Share on other sites More sharing options...
Rolexman Posted July 5, 2013 Report Share Posted July 5, 2013 I do not get on my knees. I use a large magnet on a broom stick (the one that holds kitchen knifes with vilted pads on both ends so that it hovers just millimetres above he floor). Just broom your room and you will find éverything that is magnetic. The winding position is indeed the best position for removing the stem. When reinserting on a 7750 you need to push the stem release button for a smooth instalment. The 28xx series does not require to push the stem release button when reinserting. Just click it in. Quote Link to comment Share on other sites More sharing options...
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