How To Open The Back Of A Watch To Change Battery

Opening a screw-back spotter example is fairly a straightforward functioning and allows you lot to change the bombardment on a quartz watch (so long as that watch has a screw-dorsum case) or diagnose some common problems on a mechanical lookout (and so long equally you know what you're looking for, but that's a subject for another postal service).

Understand that this procedure takes some finesse and patience (and that if you're not careful, you lot tin scratch your picket case back), simply that in one case you learn how to practice it, it's fairly easy to practice, and can help save y'all a big tab at your local watchmaker – only endeavor not to leave the case dorsum off the watch for too long, as you're only inviting the ingress of dust, pilus, and all sorts of other gunk into a very delicate mechanical system.

1 Acquire The Advisable Tools. While you don't demand to invest hundreds of dollars in the class of tools that the pros use, there are a few things that are essential if y'all desire to open your own case back (see the Buying Guide below). At minimum, a friction ball, example dorsum wrench, instance holder and mutual shop vice volition make your life easier (you could conceivably do without the case holder and vice, just if you want to drastically reduce the likelihood of scratching a case back, we highly recommend them. Besides, you should have a shop vice lying around already – what kind of man doesn't have a store vice?)

2 Use the friction ball. If the case back hasn't been tightened down to the watch case all the way, yous tin use that handy, inexpensive friction ball to open it. In this case, just flip the spotter over, grip it in 1 hand past the watch strap, and concord the friction ball confronting the case back with your other paw. Apply some force per unit area and rotate the ball counter-clockwise – if the instance back is loose enough, it should unscrew fairly easily.

3 Gear up your workspace. If the friction ball didn't yield results, chances are the last guy who tinkered with your watch screwed the example back on there all the way, and in this example, yous're going to have to apply the case back wrench to open it. First things start: take your case holder and place it in your shop vice, securing information technology in identify so that it doesn't movement around. Then, place your scout (dial-down) in the case holder and tighten the nylon pins to secure it (if yous want to be sure of not marring the case at all, nosotros recommend putting down a cleaning cloth onto the pins earlier placing your lookout man in the holder).

4 Fix upward the case wrench. While information technology'south probable best to invest in a effectively, Jaxa or LG-designed case dorsum wrench if y'all're a professional watchmaker, a less expensive version is generally fine for our purposes (keep in heed that the cheaper the tool, the more quickly and likely the threading will strip). Your wrench will likely come with several different types of chucks, which are the small pieces that fit into the actual grooves on your case back (some are polygonal, some slotted, some are small holes, etc.). Find the type that match up with the grooves on your instance back and screw them into the three threaded slots on your wrench – brand certain you screw each one in all the way, or they volition be at different heights, and you won't exist able to get a expert grip on the case dorsum.

5 Size the wrench. Okay, now begins the delicate part: in order to size the wrench to your particular lookout man's case back, you have to first carefully hold the wrench over the instance such that one of the chucks lines up with ane of the instance back grooves – this mode you lot tin can meet what kind of adjustments need to be made to the wrench (of course, this must exist done carefully and with a steady hand, lest you lot sideslip and scratch the case dorsum). Once you have one chuck lined upward, size the wrench such that the chuck reverse the showtime one fits into the groove reverse it on the instance back; this is done past adjusting a thumb-wheel on the wrench between the two chuck-holders. Now, carefully endeavor fitting the chucks into the example back slots – if they don't line up well, re-adjust the thumb cycle on the wrench until they practice.

vi Begin opening the case dorsum. At this point, if you detect that you take a practiced grip on the case back with only the two chucks, you tin try to open up the back. Very carefully, holding the wrench steady in one manus and, while applying some mild downward pressure with the other mitt, endeavor moving the wrench counter-clockwise. If the case back is actually stuck on there, you may need to braze a third chuck into the 3rd chuck holder on the wrench and adjust until all iii are slotted into grooves on the example back (in order to move the third chuck closer or farther from the other two, spin the handle on the case back wrench clockwise and counter-clockwise). Now you have 3, evenly-spaced chucks gripping the instance back, and the added surface expanse should assist you become some leverage (again, merely be careful not to let the chucks slip and scratch the case back!).

7 Open the case back with the ball. In one case y'all've gotten the instance dorsum partially unscrewed, you can prepare the wrench downwardly and employ the friction ball to open information technology the rest of the mode, without any run a risk of scratching it. If y'all're working on a quartz scout, you can now change the battery, and if you lot're working on a mechanical watch, you're now free to do whatever it is you need to practise in there (what exactly are you doing in there, just looking effectually for the pure fascination of it? Okay, fine – I'm guilty of doing this myself) – just keep in heed, again, that the longer the case back is off the case, the more opportunity in that location is for schmutz to go far there and gum up the move (if you don't know what "schmutz" is, go pick upward a Yiddish dictionary – that'south your homework assignment for the twenty-four hour period) – so don't leave the instance back off for too long. Do what you gotta do, and opposite these steps in social club to screw information technology dorsum on such that it forms a tight seal, but non so tight that information technology'll be impossible to get back off again.

The Gear

Here are some good options for the aforementioned tools:
Big Watch Movement & Case Holder past Esslinger $eighteen
Scout Instance Opening Friction Ball by Esslinger $6
Waterproof Watch Case Wrench by Esslinger $17
Microfiber Jewelery Polishing Cloth by Esslinger $3

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Source: https://www.gearpatrol.com/watches/a474946/how-to-open-a-screw-back-watch-case/

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