bvc Posted March 13, 2014 Report Share Posted March 13, 2014 So, some crown stems are, well, rough! Of course replacement is the ideal solution however is there a quick fix in the meantime to slow down the dreaded "stripping" can you remove and lubricate or is it a waste of time? Thanks in advance guys. Bvc. Quote Link to comment Share on other sites More sharing options...
mymanmatt Posted March 13, 2014 Report Share Posted March 13, 2014 Take a needle and put some anti-seize grease on the case tube. Screw crown in and out until you feel it smooth out. Then take a rag and wipe the excess off the threads on the case tube. You should see a marked improvement. Quote Link to comment Share on other sites More sharing options...
elconquistador Posted March 14, 2014 Report Share Posted March 14, 2014 Take off the crown / stem then use a cape cod to take burrs off the male threads getting the cloth in there with you fingernails. For some makes a big difference. Quote Link to comment Share on other sites More sharing options...
Nanuq Posted March 14, 2014 Report Share Posted March 14, 2014 Another trick is to use waxed dental floss to clean and lube the tube threads. Quote Link to comment Share on other sites More sharing options...
SSTEEL Posted March 14, 2014 Report Share Posted March 14, 2014 Whenever I come across a gritty feel crown/tube, I remove the stem, and clean the tube thread with a toothbrush, and then rodico. The crown I blast out with compressed air. Then I grease the tube thread, and refit the crown, and usually its then butter smooth. You would be surprised at the dirty tube threads from the factory! Quote Link to comment Share on other sites More sharing options...
Rolexman Posted March 14, 2014 Report Share Posted March 14, 2014 I use a glass fiber scratch pen to clean grooves and remove burs. The hairs of a toothbrush are normally too thick to properly reach in the grooves. Than just some cutting grease. Quote Link to comment Share on other sites More sharing options...
bvc Posted March 14, 2014 Author Report Share Posted March 14, 2014 Thank you guys. Will take that on board. I've read stem removal from an a7750 is not straight forward. I'm using the search button, but if anyone wants to chip in I'd appreciate it. Cheers Bvc. Quote Link to comment Share on other sites More sharing options...
elconquistador Posted March 14, 2014 Report Share Posted March 14, 2014 7750 stem removal is a piece of cake. Just don't push the release any harder than you need to. Quote Link to comment Share on other sites More sharing options...
freddy333 Posted March 14, 2014 Report Share Posted March 14, 2014 Make sure the stem is perpendicular to the case where it exits. Quote Link to comment Share on other sites More sharing options...
fraggle42 Posted March 14, 2014 Report Share Posted March 14, 2014 One thing to remember is if you use grease or suchlike to make it smooth, remember to always remove ALL of that grease (after you have the action lovely and smooth) and put fresh grease on. The reason is that the first lot of grease now has lots of tiny bits of metal in it (that were causing the roughness) and if you left that grease on there it will act as a cutting paste and make things looser and looser until the threads crumble to nothing. Remove it and put new grease on and it'll be lovely and smooth for a long time to come. Quote Link to comment Share on other sites More sharing options...
bvc Posted March 15, 2014 Author Report Share Posted March 15, 2014 Great advice guys. Thank you. Makes my heart sink every time I have to adjust a watch. Good point on the cutting paste fraggle. That's exactly the sort of thing I would miss. Dead chuffed with this thread as grinding stems are driving me mental. Result. Bvc. Quote Link to comment Share on other sites More sharing options...
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