laryea Posted September 6, 2006 Report Share Posted September 6, 2006 Hello Rob, I just wanted to know a little bit about the case construction of the PAM 187 (the second version released this past June). Based on your servicing of a few of them, are there gaskets present where they should be? For example, for the pushers, crown, caseback, etc. Also, in the area of the dummy He valve and date corrector, are there holes completely drilled through the case. If so, are there gaskets there as well or nothing at all? And the construction of the rotating bezel...are there any gaskets in that location? Lastly, do you feel that the case and materials are of a quality that would last several years, or more along the lines of 2-3 years? Thanks for your time and patience. Laryea Quote Link to comment Share on other sites More sharing options...
Finepics Posted September 6, 2006 Report Share Posted September 6, 2006 Hello Rob, I just wanted to know a little bit about the case construction of the PAM 187 (the second version released this past June). Based on your servicing of a few of them, are there gaskets present where they should be? For example, for the pushers, crown, caseback, etc. Also, in the area of the dummy He valve and date corrector, are there holes completely drilled through the case. If so, are there gaskets there as well or nothing at all? And the construction of the rotating bezel...are there any gaskets in that location? Lastly, do you feel that the case and materials are of a quality that would last several years, or more along the lines of 2-3 years? Thanks for your time and patience. Laryea Hope you don't mind me answering this for you. The case is designed to have two O rings for the caseback (but some have been delivered with one missing). One that fits around the threads of the caseback and the other that sits in a groove in the case. All the pushers (as they are on all the chronos) have internal O rings which are watertight. They industry standard pushers so are all made the same way. The case tube has an O ring as does the winding crown. The HE valve and date pusher are drilled all the way through and are a press metal to metal fit. The crystal is held in place with a nylon I ring which again is an industry standard watchmaking technique. These are all the seals on the watch - the bezel merely surrounds the top of the case and needs no sealing. The case is certainly of a quality to last 1000 years however the asian movement is a bit of an unkown quantity. They have not been made for long enough to know how long they will last. Usual problems are dirt or insuffucient lubing but the quality of some gear wheels is not as high as it could be and things like the chrono reset hammer can come apart. Most are able to be converted to ETA without too much difficulty. The hands are also know to rotate on their pinions and so not reset in the correct position. The long and short is that some will go on for years and others quit after a few weeks. All things are fixable. Quote Link to comment Share on other sites More sharing options...
laryea Posted September 6, 2006 Author Report Share Posted September 6, 2006 (edited) Hey Finepics! I don't mind you're answer at all. Thanks for the information. So, based on the press metal to metal fit for the date changer and He valve, this would be the most likely area for water to enter the case? I've had the watch for 2 months now with no problems. The chrono functions work great and reset to zero perfectly everytime. Power reserve is 48 & 1/2 hours when the crown is wound for 90 seconds. Runs at about 5 seconds fast per day on the wrist. So far, the movement isn't giving me any problems as of yet...it's been consistent. By the way, do you (or anyone else) happen to know if genuine ETA parts will fit for this new asian movement in the 7753 configuration? Thanks! Edited September 6, 2006 by laryea Quote Link to comment Share on other sites More sharing options...
Finepics Posted September 7, 2006 Report Share Posted September 7, 2006 Hey Finepics! I don't mind you're answer at all. Thanks for the information. So, based on the press metal to metal fit for the date changer and He valve, this would be the most likely area for water to enter the case? I've had the watch for 2 months now with no problems. The chrono functions work great and reset to zero perfectly everytime. Power reserve is 48 & 1/2 hours when the crown is wound for 90 seconds. Runs at about 5 seconds fast per day on the wrist. So far, the movement isn't giving me any problems as of yet...it's been consistent. By the way, do you (or anyone else) happen to know if genuine ETA parts will fit for this new asian movement in the 7753 configuration? Thanks! There is no reason why these would leak and to remove them might make a problem. Best thing to do is remove all the movt then assemble the empty case and put it in a glass of water. You will see if there are any obvious leaks or get it prtessure tested if you really want to be sure. Most of the reps (especially PAM's) are all waterproof as made but not alweays as delivered due to the casebacks often not being done up properly. Yes a genuine ETA will fit but you have to use some parts from the asian 7750 to make it work. The Zigmeister (the master) has an excellent detailed post in his movt and reviews section here: http://www.rwg.cc/members/index.php?showtopic=1410 Quote Link to comment Share on other sites More sharing options...
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