How to Maintain A battery power-driven Quartz clock

make certain the metal contacts within the battery holder don’t seem to be unsound. The spick-and-span battery you place in won’t fix the matter if the metal contacts ar dirty. If the metal isn’t shiny and clean then scrape it exploitation sandpaper (220 grit or there-about can work fine). If you do not have sandpaper then you’ll be able to use atiny low flat-bladed screw driver or different ‘pointy’ metal tool. If this fixes the matter, then you’ve got gotten off the hook within the best doable means.

Check the magnet. If the matter still persists, then the Lavet kind stepper in your Quartz clock most likely features a slightly misaligned magnet, (i.e., the rotor). you wish to maneuver the magnet back to the correct position. So, you have ne’er detected of this thing? visit and skim the article on “Lavet kind stepping motor”.
Please note that this text solely shows a super-small stepper motor like is employed in a very wrist-watch. The one in your clock is far larger and easier to figure on. strive to not let yourself be intimidated. it’s not that tough.

Perform a straightforward check to verify that your Quartz clock has this kind of downside. Lay your clock on a flat table with the face of the clock inform up at the ceiling. See if the second user features a downside wherever it starts and stops or maybe stops utterly. If so, then it’s probably that the little magnet has slipped backwards and isn’t any longer within the same horizontal plane because the metal of the magnet.
this is often currently the second a part of this straightforward test: Flip the clock over in order that the force of gravity can pull the insufficient magnet back to its correct position. The face of the clock can currently be facing down towards the ground.
If your table is formed out of glass then you’ll be able to sit on the ground and appearance up through all-time low of the table to visualize if your clock is running properly. Or, you’ll be able to simply choose the record and hold it higher than your head to seem at it. you wish to stay it within the same horizontal downward facing position. If your clock works fine within the downward position however not within the upward position, then you’ve got a misaligned magnet.

take away the insufficient black plastic box from the rear of your clock. this is often the box that holds the AA battery within the back and therefore the clock hands on the front. it’s referred to as a stepping-type clock movement. To do this, begin by removing the clear plastic cowl on the front of the clock. it always has three plastic tabs or indents round the environs. See if you’ll be able to find wherever these three tabs ar.

Use atiny low flat screwdriver to carefully pry these three tabs loose and take away the clear plastic front cowl.

Gently take away the three clock hands, (the second user, the big hand, so the hour hand). simply pull outward (on one hand at a time) and that they can pop off. place them in a very tiny instrumentality off to the aspect to stay them safe. strive to not drop them on the ground and particularly to not step them.

On the rear of your clock, there ar two massive black plastic tabs or hooks that firmly mount the clock movement to the rear of the clock. Gently pry these two tabs outward merely enough to permit you to get rid of the clock movement from the rear of your clock.

take away the battery.

Open up the clock movement and appearance within. to try to to this you wish to get rid of the black plastic cowl on the rear of your clock movement. Be careful. it’s three unharness tabs, not 2. there’s a hard-to-see tab within the middle of the battery compartment. strive to not break any of those tabs as a result of you wish them to carry your clock movement along. Gently take away the rear cowl and appearance within. If any of the insufficient white plastic gears have fallen out of their correct position, then place them back.

familiarise yourself with the components within your clock movement.
See {the little|the tiny|the tiny|the insufficient|the limited|the miscroscopic} card? There ar two terribly small copper wires that connect this circuit board to a wire coil mounted beneath. strive to not break these wires. they’re solely zero.003 inches in diameter and ar terribly fragile. Please notice that the coil of wire is wrapped around one leg of a comparatively massive “U” formed piece of flat metal. These two items along kind Associate in Nursing magnet.
once current flows within the coil of wire then it makes the iron-alloy metal core become magnetic. there’s Associate in Nursing air gap at the open finish of the “U”. this is often wherever the insufficient magnet goes. Together, these three components kind a Levat kind stepper. The magnet is made within the form of a toroid, (or donut).
connected to 1 aspect of the magnet could be a cabbage butterfly plastic gear with teeth on that. it’s referred to as a rotor as a result of it “rotates”, (i.e., it spins around in a circle sort of a bicycle tire). there’s Associate in Nursing shaft or very little plastic rod that goes at ninety degrees throughout the middle of our magnetic toroid. the insufficient magnet should be lined up right within the middle of the flat metal that surrounds it, (i.e., the electromagnet), instead our very little motor does not run alright.
One finish of this tiny plastic shaft for our rotor goes into slightly hole that is found within the black plastic cowl that you took off. this tiny hole is just too deep! this is often the full downside. we’d like to cut back the depth of this hole in a very precise means. Doing thus can probably modify the clock to figure absolutely for several years to return. The difficult question here is “How will we do this? however will we live or somehow confirm simply specifically however deep this hole ought to be? additionally, however will we then stock up all-time low of this hole in a very precise means, (to inside many thousandth’s of Associate in Nursing inch)?”

certify that you have settled the precise hole within the back cowl that’s meant for holding the stepper-motor rotor in situ. Open up the opening in order that it goes all the means through. strive to not use atiny low drill. you may scuff the perimeters of the opening. this could considerably speed up the speed at that these plastic components would wear out.
rely on it. you would like your clock to endure a few years to return. this suggests that your very little rotor are spinning in situ and rubbing against the within of this hole day and night for several years. For long life, it’s vital that at the places wherever plastic rubs up against plastic that each surfaces ought to be terribly swish.
No, a drill isn’t counseled. The vital factor is that it’s created out of hardened steel which the tip. The plastic wall at the rear of this hole is just concerning 1/64 th of an in. thick. simply pushing on that (from within the hole) with the proper style of sharp, pointy metal tool can poke a hole all the means through.
the precise size of this hole might vary from manufacturer to manufacturer, thus it’s within the vary of zero.025 to 0.050 inches in diameter. Once you have poked a hole through the rear wall from the within, then flip the rear cowl around and clean it up from the surface. you would like the opening to be nicely opened-up in order that you’ll be able to get at it from the rear, (while the clock is running in a very face-down position).
you’re reaching to place glue down this hole, a special kind of glue. it’s referred to as “Plastic Fusion” and you get it at a store for HVAC referred to as Grainger’s. (Do a Google search on the web to search out close toest|the closest} Grainger’s store near you.
Also, you wish sensible air ventilation as a result of the fumes from this glue ar cyanogenetic. scan the cautions on the rear label.) it’s a 2-part glue and is extremely thick. you would like the glue to fill the tip of this hole no end the rotor from spinning. Use motorcar gas on the tip of the rotor shaft shaft in order that the glue wouldn’t stick with the rotor and it’d be absolve to keep spinning. it’s vital that the clock run and keep running the full time that this glue is drying.
you would like the glue to stay to the rear cowl of your clock movement however to not the rotor itself. to try to to this you wish to watch out to not place oil on the surface of the rear cowl close to the opening. However, you are doing need a bit of oil down within the hole on the tip of the rotor shaft shaft. The safest thanks to management wherever the oil will and does not go is as follows. Before swing the rear cowl on, dip the tip of the rotor shaft shaft into slightly gas. Wipe off most of the oil by gently touching it to a clean, dry surface many times. Use the table prime of my work bench. place the rotor back within the stepper.
Be terribly careful that the shaft shaft of the rotor is inform straight up and down and not off to the aspect slightly bit. The rotor itself could be a very little magnet and therefore the metal it sits next to is additionally slightly magnetic. the key to creating the rotor get on my feet straight is to rotate it by forty five degrees or ninety degrees in order that its own field of force is correctly aligned with the residual magnetic fields of the 2 items of metal on either aspect of the rotor. simply play with it, you will get it. If the rotor shaft shaft isn’t straight up and down after you place the rear cowl on, then you will break one thing, (the very little shaft socket towards the front of the clock). it’s doable to mend an opening like this however it’s terribly finical. simply watch out and do not break it, OK?

Gently place the rear cowl on whereas keeping the clock movement in a very face-down position. Oil might attempt to kick off the opening. Gently dab it off to stay the encompassing space dry. you’ll like better to highly to|favor to|opt to} use one thing more acceptable, sort of a rag or tissue.
place the battery within the clock in order that it runs. you’ll wish to quickly place the second user back on the clock to verify that it’s running properly whereas in a very face-down position. Take the second user off once more as a result of it gets within the means whereas you’re attempting to try to to the gluing. strive exploitation spool of solder (because it’s a hole within the middle), as an area wherever you’ll be able to set the clock movement down in a very face-down position. you’ll have another item, (such as slightly picket board with a hole in it), that’s convenient for you.

confusion your 2-part glue and gently push slightly little bit of it down the opening. This last half is additional art than science. Use your best judgement. it’s higher to err on the aspect of deficient glue down the opening instead of an excessive amount of.

place a giant clod of glue (( ساعت دیواری طرح قهوه )) round the whole space. the insufficient clod of glue down the opening has nothing to stay to attributable to the oil. What holds it in situ is that the massive clod of glue. it’s vital that the clock keeps running for the full time that the glue is drying. It takes the glue concerning Associate in Nursing hour or two to dry.

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