Here's a cut-a-way tube showing the area for the smallest diameter O-rings,
This is a
Trip Lock Crown system, it has more rubber parts than most screw down crowns,
this doesn't necessarily make it better ~ just different.
Here's the cut-a-way tube (anything for science eh?) with the 2 O-rings in place, neat eh?
the largest O-ring goes on the outside of the new stem tube, the flat gasket goes inside the new crown.
The Flat gasket makes the best seal against the end of the stem tube, the internal O-rings prevent water,
dust from entering if it gets past the flat gasket. IMO the large external O-ring is just to keep the threads
on the stem tube clean. Okay, what's the other O-ring for? that one is used to assist the stem tube to case seal ~
not important for you now if all you want is to replace the rubber pieces on your screw down crown.
The old O-rings on your stem will come out with the tip of a small
metal pick or screwdriver, usually 1 inside the tube itself, and 1 inside the actual crown.
Replace with your new O-Ring parts, apply a thin coating of silicone grease to all rubber surfaces
and re-install the crown & stem. When you place the Crown & Stem back into the case,
it will slide into place with a little fiddling, remember : NO FORCE, just slight wiggling is usually all you need.
It will need to be pushed all the way in to lock it in place, try pulling it out, if you end up with the Crown & Stem
in your fingers, you didn't get it to lock.
Now inspect the case back gasket, it shouldn't look crushed or damaged, if in doubt use a new one.
Apply the silicone grease - sparingly to the gasket, push into place and re-install the back.
You did all this in a dust free work shop right? if not, check over all the visible movement surfaces
with your 10x loupe looking for hair, dust, cookie crumbs (yes that one's for you boscoe)
and get them out before you seal up the watch.
Note: the case back doesn't need to be torqued down like the lug nuts on your SUV.
It needs to seal & compress the O-ring, but not so much that you tear the threads out of the case!!!
So be careful, it's a watch not a HUMMER.
Quelle:
http://jholbrook.proboards.com/index.cg ... read=20558
GRUSS MAJA
PS. Frag denn Google Translater...my englsih is not very well...