I wouldent have thought a glass crystal could be sized any amount without breaking ?
this mean you think it cannot be fitted?I wouldent have thought a glass crystal could be sized any amount without breaking ?
Have you measured the case size correctly ?this mean you think it cannot be fitted?
that's a genuine Seiko 300WB0GN00 crystal.
So the crystal must be fitted from the the back!I have that same watch and replaced the crystal about two months ago. The crystal number you mention is the one I used - although my original crystal gasket was okay, so I greased it and used it again. To be clear, the crystal itself should press into the metal retaining ring with hand pressure (and the thin rubber o-ring gasket). Then the crystal/retaining-ring assembly should be press into the case with the nylon gasket requiring a case press. I'm a little puzzled why your crystal won't fit - but I have a spare crystal for that watch, so if you're in the spirit to just go for it and the crystal breaks, I'm happy to sell you mine.
The crystal/retaining-ring assembly still has to be taken out of the front, but yes, the crystal is fitted into the retaining ring from the back. Once you have the bezel and the movement removed, use a crystal press to push the crystal out the front (be sure not to press on the chapter ring). The crystal/retaining-ring will press out of the front as an assembly (the chapter ring can then be lifted out the front). Once the crystal/retaining-ring assembly is removed, you should be able to press the crystal out the back of the retaining ring. Mine came out with thumb pressure, but if the gasket that holds the crystal in the ring is deteriorated, it may require some more work.So the crystal must be fitted from the the back!
This way it's really clear what's the procedure
How can I take out the crystal retaining ring before inserting the new glass?
I must take out also the chapter ring I suppose.
Shall I use a small flat head screwdriver?
Please let me know!
It's on page 8 of the 7546A Manual/Parts list...by the way - where did you find that cross-section?
Thanks for that! I had no idea those manuals were posted there...great resource.It's on page 8 of the 7546A Manual/Parts list:
http://www.thewatchsite.com/d1/files/Seiko%20Technical%20Manuals/7546A.pdf
Yeah, that looks to be the same.Hi mates,
you think the case is the same of 7546-606A?
I found a very nice explanation here:
http://www.network54.com/Forum/78440/thread/1249129118/7546-606A+crystal+removal