I need to do some routine maintenance on a dive watch and I'm looking for advice. First of all, I have a Festina Sub Diver. It's not super expensive, but at about $200 I'd rather not wreck anything. Also, I don't actually dive with it. I do swim with it and it finds it's way into the shower pretty frequently. I like the dive watch though because it's big and heavy and very tough.
Ok, my battery died so I need to replace it. Some jewelers I asked did not want to do it as it's a dive watch and they don't have the ability to pressure test it afterwards and don't want to be liable if it fails later.
I think I'm just going to buy a caseback wrench (they're cheap on the bay) and change the battery myself then. My questions:
1) Should I automatically change the o-ring inside while it's open to ensure a good seal? If so, are they specialized and where should I get it?
2) Is it really necessary to get it pressure tested? Like I said I don't dive but I Definitely want it to be watertight. Some places I found online charge a mint for pressure testing. Are there places that do it cheaper? Or should I get some parts together and build my own pressure tester (doesn't look too tough based on my reading) or should I just snug it up and not worry about it?
Suggestions from divers and watch enthusiasts welcome!