Kollektor Posted April 19, 2007 Report Share Posted April 19, 2007 Per The Zigmeister's advice in a post about caseback openers, I'm thinking about an LG Hand Wrench for Screw-Case Backs (http://www.tztoolshop.com/FB_Catalog_Case_Back_Openers.html). Basically just want one of these to tighten the casebacks to prevent water from entering. Who knows how much they're tightened at the factories... Have a few questions for anyone in the know who wouldn't mind helping out a noob. 1) While this wrench is considered "universal," would it be correct to expect that it will open Rol, Omeg, Seik, Breit casebacks? 2) Is it absolutely necessary to use a case holder with the wrench, or can one palm the watch while torquing? 3) How much does one torque the case backs for "adequate" waterproofing? I'm concerned about stripping the threads with too much pressure. I have a PAM tool which I easily used without a case holder, but then, the tool wouldn't slip in a million years since it's a perfect fit. Thanks in advance for your help! Link to comment Share on other sites More sharing options...
spa Posted April 19, 2007 Report Share Posted April 19, 2007 -That one will not open R0lex casebacks. -It will open 0megas, though not the original tool. -don't know about the other brands you mentioned...i didn't check the kind of their casebacks... -can open the watch if you hold it in your palm (at least i manage to do it), but a case holder would be the "right" way to do it according to the specialists... - I have no idea about the torque. I just screw the casebacks as far as they can go, thinking that that's enough... ...anyway there is no "torgue" meter on those tools so how would you measure the torque needed even if you knew the limits? hope this helps... Link to comment Share on other sites More sharing options...
richard_uk Posted April 19, 2007 Report Share Posted April 19, 2007 There's only one "universal" back opener, and that's a balled up piece of sticky tape, it's the safest too, no scratched backs with this tool Link to comment Share on other sites More sharing options...
Kollektor Posted April 19, 2007 Author Report Share Posted April 19, 2007 -That one will not open R0lex casebacks. -It will open 0megas, though not the original tool. -don't know about the other brands you mentioned...i didn't check the kind of their casebacks... -can open the watch if you hold it in your palm (at least i manage to do it), but a case holder would be the "right" way to do it according to the specialists... - I have no idea about the torque. I just screw the casebacks as far as they can go, thinking that that's enough... ...anyway there is no "torgue" meter on those tools so how would you measure the torque needed even if you knew the limits? hope this helps... Very helpful ,thanks. Doesn't sound very "universal" to me . Re torque, I didn't mean specific numbers, but rather how much leverage to apply--a yank after it moves no more, etc. Link to comment Share on other sites More sharing options...
offshore Posted April 19, 2007 Report Share Posted April 19, 2007 If all the seals are good and lubricated, you only need to "nip" the back down, you are not creating a seal with extra pressure, just distorting the O Ring. Usually I find if a watch is difficult to open, the problem exists in the thread.... I did however work on a divers watch, where the owner had noticed the case back was "loose", whilst he was at depth (130') and had finger tightened it underwater... that was a seriously difficult case back to remove.... @richard.... don't think tape would have ever moved this one!! Offshore Link to comment Share on other sites More sharing options...
Kollektor Posted April 19, 2007 Author Report Share Posted April 19, 2007 Thanks All. I'm opting for tape now :-) Link to comment Share on other sites More sharing options...
eunomians Posted April 20, 2007 Report Share Posted April 20, 2007 You should def. get a well-made opener. It is the only way to get the caseback on real tight. Link to comment Share on other sites More sharing options...
tourbillon Posted May 19, 2007 Report Share Posted May 19, 2007 Hello All. I know that this is a rather late reply but regarding the torque for casebacks -- Rolex tightens them up to 5 Newton Meters. That's about 44.25 inch pounds. Hope this helps. Link to comment Share on other sites More sharing options...
stilty Posted May 20, 2007 Report Share Posted May 20, 2007 Hello All. I know that this is a rather late reply but regarding the torque for casebacks -- Rolex tightens them up to 5 Newton Meters. That's about 44.25 inch pounds. Hope this helps. Cool. I always wondered what it was! Now how does one go about checking the torque? I wonder if one could rig a case back ring on a torque wrench? Link to comment Share on other sites More sharing options...
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