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A quick step-by-step tutorial on how to replace the battery on a TAG Heuer Aquaracer. This watch belongs to a good friend, and it is in need of a battery replacement. Step 1: Remove the screw on case back. The tools I am using are a three-pins Jaxa case opener and a case holder. At first, I try to open the case-back just with the watch mounted on the case holder. But the case-back is very tightly screwed on (this is a diver watch with 300m waterproof). In the end, I secure the the case holder on a mounted bench vice to free both of my hands to open the case-back. I also find that using a three-pins opener a lot better than a two-pins, especially for a diver watch. Step 2: Check the battery The quartz movement inside this Aquaracer is a Ronda 6004.B, which uses 373 Silver-Oxide battery (or SR916SW). When I receive the watch, the battery is not fully exhausted. The small-second hand jumps every four seconds (battery-saving mode), though still keeping time it shows that the battery is weak. With battery replacement jobs, I usually receive the watch with a fully exhausted battery. To ensure that the issue is not with the movement, I always test the old battery before replacing it. A quick test on this battery shows that the problem is with the battery. A new battery is around 1.5Volts. Step 3: Grease the seals Before I screw the caseback on, I grease the caseback seal using Seiko silicon greaser (S-916) that comes with an applicator and the crown seal with Seiko greaser (TSF-451). If the seal is no longer in good condition, it is advisable to replace it also. Tip: To grease the seal on the crown, you will need to first remove the stem (or watch winder). Below is an excellent video on how to remove a stem on just about any watch. Step 4: Waterproof test The next step is to waterproof test the watch. Note: I am still saving up to get myself a waterproof tester. Job's done!
In the excitement of repair, I accidentally broke the stem off. What are the tips on getting a replacement or fixing this? This is of the SeaGull TY2867 movement, not one of the popular movements. I checked website like Esslinger, the stem replacement goes by brand like ISA, Ronda, Seiko, etc. Do I get whole new stem, or just get an extender? If I getting a new stem, what to get (how can I tell which is the right one since this is not of a popular movement that I can order by caliber number)? Also, will an extender works, and is it a better/worse option? What's the general guidelines, whether to replace the whole stem or get an extender? Much appreciate your always helpful insights. Thanks
I am struggling to find a way to remove the movement on this large Ingersoll watch from its case. Cannot seem to find any screws that pin the movement to the case. Tried to remove the steel spacer, it is un-movable even with pliers. Does it mean that that I have to come from the glass? If through the glass, do I pry on the small opening on the bezel (see the second picture attached)? Appreciate any helps. Thanks.