The quartz wall clock mechanism has broken. Is it possible to repair a non-working watch? Wall clock malfunctions

Each of us has received a faulty, defective or poorly performing product at one time or another. I'm not an exception. In the fall, they sent me a non-working wristwatch. (It was not possible to provide a link to the product, so I advise you to look for this watch in the store by price.)

Actually, the watch is nice. Apart from the “cute” jokes of Chinese assemblers, they look more expensive than they cost. It's a shame to throw it away.
The coating of the body is uniform, without flaws. The dial is made normally, without major flaws. Time reads well. From previously purchased mechanical watches The Eyki dial is a bit unclear and gives off a cheap Chinese feel. The watches described do not have this. By the way, I don’t understand why the Eyki brand is so praised by visitors to this site.
The case and back cover are metal. Of course, it says on the lid that it is made of stainless steel. True or not, I don't know. The watch is light (I can’t weigh it - I haven’t bought a scale yet). The size (length) of the case with lugs is 44 mm. The diameter of the case without the head is 40 mm. The thickness at the center of the watch is 7.5 mm. The strap size is 20 mm, so a replacement can be easily selected.
The belt is made of a material reminiscent of suede, but, of course, it is some kind of synthetic. I find the strap and case coating to be short-lived. Maybe I'm wrong. I won't scratch the body to check. Over time, "performance testing" will reveal the truth.
If these hours are not enough for a long time, there will be something to give next time. You don’t need to demand much from the price range of 200-300 rubles. These watches are bought for one season. And you certainly shouldn’t compare them with models for 3000-6000 rubles, as some do. If a watch costs 20 times (!) more, it simply has to be better.
There is a funny inscription on the back cover and strap: FRENCH CYBER DESIGN. There is another one on the dial: CYBER DESIGN. How does this translate? French cybernetic design?
I repeat that I liked the watch, and I decided to try to revive it. But at first I put it off for a while - in case I needed to send it back to the store.
The answer from MiniInTheBox came quickly. Its essence is this: so that we can help, state the problem. In general, this is a standard unsubscribe that they had at hand. Re-described the problem. In the reply message I was offered a coupon for $10 (the watch cost $7). The coupon is valid until the middle of next year, that is, at that time there were eight months left before the expiration date. I've calmed down. But in vain...
Some additions need to be made here. Communication with the support service took place in Russian. I think this is a plus for the store. Another plus is that the package includes a packing list (in Russian) listing the goods sent. If something is missing along the way, it will immediately become clear.

I also need to say that I paid insurance for the delivery of the entire order - $0.99. In addition to the watch, there were other goods in the parcel. The delivery itself is free. I don’t know whether the presence of insurance influenced the decision to reimburse the cost, and what will happen if the order is not insured.
Time has passed. I again defeated the toad, and decided to buy myself another, I don’t know which one, watch. A good time to take advantage of the coveted ten bucks coupon. Unfortunately, when placing an order, a message appeared that such a coupon does not exist.
Naturally, I wrote to support. I received a reply, which recommended using the FAQ on the site. I am writing for the second time, again describing the problem. An answer comes saying that a problem may arise if the order is made in rubles, and a dollar coupon is used and in some other cases. I think I placed the order correctly, it was a glitch in their store. Most importantly, they gave me a new coupon, which worked fine.
In general, I have no complaints about the store, despite the replies. Moreover, in my practice this is the most good job with the client. In total, I have made complaints about defective or erroneous products to four stores: Tmart, PriceAngels, DealeXtreme and MiniInTheBox. The worst thing is Tmart - they simply don’t respond at all, they don’t even send unsubscribes. To avoid being accused of slander, I present the facts.

Additional Information

Here is a screenshot from the monitor. These are “tickets,” that is, questions to the customer service of the Tmart store (click to enlarge).

The picture is not very good, but you can see that there are five questions in total. One of them has been resolved. There was a sale, but for some reason these goods were not in the store. In general, they offer non-existent goods. After some time, the store itself offered to return the money and returned it. The issue was resolved.
However, there is no answer to any of the defective goods, and look at the photo, there are as many as four of them. It says: “Waiting for response from customer service representatives.” So, the wait for the first defective product lasts from December 3rd. Today is December 23rd. They don't even send replies. At the same time, I was assigned T1 status, which entitled me to priority service, including customer service responses.

P.S. I wrote to support (it’s good that I talked to him about getting the money back, now I know the address - there’s simply no address on the site to whom to write, just tickets). Only today (12/23/2013) I received an answer in English. The meaning is: sorry for the wait. how can I help. Unsubscribe, but still at least some response.
Hooray! Tmart's support is more alive than dead!

Now it's time to start repairing your watch. Let me say right away that I am not a watchmaker. Now a few words about repairs in general. If the car is poorly repaired, for example, the brakes may fail, or a wheel may fly off at high speed, which is very dangerous. Illiterate watch repairs do not lead to fatal consequences. Therefore, we have nothing to fear.
I'm just about to buy a special tool for opening cases, so for now I open it with a knife. Here the lid is a clapper, that is, without threads.
The mechanism is very simple. Made of plastic. More expensive watches are made of metal. The movement says “Singapore” and also has letters and numbers.

The main thing is to look at what kind of battery is installed, since that’s where we’ll start. Marking 377A. If anyone doesn’t know, the letter in the designation speaks of chemical composition fillings. Size is important to us. That is, any element with index 377 will do.
I know one shop in Sokolniki where the batteries are cheap, but it seems that they are really branded. At least in wristwatch they serve for many years. So, in in this case element 377 of the famous Swiss company Renata (part of the Swatch group) cost, believe it or not, only 40 rubles.
I replaced the battery and - oh, miracle! - the clock has gone. And they say that if they sent non-working ones chinese watch, change or don’t change the battery – it won’t do any good. It turns out that sometimes it's the battery.
Now you need to clean the dial and glass. Before removing the mechanism, you need to remove the crown. There is usually a button in the mechanism next to the head shaft. You need to press it with a thick needle or straightened paper clip and at the same time pull out the head. In this case, there was no such button. The head is fixed metal plate, which simultaneously presses the battery, creates resistance when pulling the crown and, apparently, performs some other functions. In general, the manufacturer tried to reduce the number of parts and reduce the cost of production. The photo shows where to press.

Since the white plastic container around the mechanism is installed by surprise, I pry it with a knife and remove it from the metal case. Attention! The mechanism cannot be placed face down on the table - the hands will be damaged. By the way, when the head is disconnected, the arrows can rotate independently under the influence of gravity - this is not a malfunction.

Now I carefully blow off the dust (in a good way, you need a syringe, be sure to wash the inside). I wipe the dial paper napkin carefully so as not to damage the arrows. It is possible to see what is written on the dial. It turns out that the mechanism here is Japanese (let me remind you that “Singapore” is written on the mechanism itself). The caliber of the mechanism is also indicated. Most likely, the numbers were taken out of thin air.

Now I'll try to clean the glass. The cafeteria must have run out of spoons, so the picker had to eat with his hands. Why do I think this? A greasy fingerprint was removed from the glass with a wet cloth, then a dry one, and then wiped with a cloth for cleaning camera lenses.
As they say in the instructions, assembly is carried out in reverse order. But it was not there! The lid did not want to go back into place. She's very tight. But I was afraid to put too much pressure on her. After the twenty-eighth attempt, it was decided to turn to professionals.
My advice to you: never replace batteries, belts, glass from the masters who sit behind a small counter in mall. They scratch the watch and install refurbished batteries, which fail within a week. Here in Moscow they are now trying to hire people for this (and not only this) work who are ready to work for pennies from morning to night. And it doesn’t matter whether a person knows how to work or not. Do you agree with these terms? Congratulations, you are now a watchmaker!
Precision instruments must be repaired in workshops located on the ground floors residential buildings, and have existed since the time of developed socialism. In one of them, a sullen professional with a magnifying glass in his eye looked like a cyborg, but did the job “excellently.” For which he tore off 100 rubles.
So, let's bring the balance. Costs: watch price + battery price + watchmaker services: 7+1.2+3= $11.2. Minus $10 coupon. In total, the purchase cost $1.2.

The repaired watch is currently waiting to be donated. In conclusion, according to tradition, photos with animals. They are also waiting... Waiting for the clock to strike twelve. Happy upcoming year everyone!

The Soviet-era watch, or rather the mechanism itself, broke down wall clock. I don’t want to throw away my watch for my own reasons. Perhaps they fit the interior but there is no way to buy the same ones, or a watch is important as a gift for a long memory, but buying a new one is expensive or you don’t want to. In general, it will be faster and cheaper to completely replace a broken clock mechanism (which tells time) than to try to repair it.

Then I decided to look for a separate clock mechanism for sale.
For some reason it seemed to me that the clock mechanism was expensive and made up a large
part of the cost of the watch. It turned out that the clock mechanism can be bought in bulk from 60
rubles! True, these are discrete and noisy. Moreover, these mechanisms
are standardized and have the same landing dimensions. Find a store that
I could sell the watch movements I needed at retail, but it turned out to be quite difficult. IN
in the end, for 150 rubles I bought a silent mechanism with a floating mechanism in the Bangood store Coupon(12% discount) Code: BGHome

The old mechanism worked for about 20 years.

New silent watch mechanism.

y'all put it in old building watch - everything fit fine and the hands also fit, except for the second in my case.You can change the mechanism yourself, since now repairing wall clocks has become very simple and cheap. I bought it, unscrewed the old one, installed the new one, done.

Arrows are packed in a separate bag

The task is to remove the old mechanism from the watch case. Then install the new mechanism. Then install the hands on the axis of the mechanism: the first is the hour, the second is the minute, the last is the second.

.

This mechanism is very quiet and takes several steps in a second. I am writing this after a couple of months - it works perfectly, does not run away, does not knock, and does not interfere with sleep at night.

If your quartz wall clock is brokenor tired of their loud ticking, the most cheap way get workingA silent clock requires buying a separate clock mechanism and installing it yourselfhim into the old building.You can also create based on a clock mechanism

Chapter 3. Quartz watches

This is the name of an electronic-mechanical wristwatch with a quartz oscillator (Fig. 9).

Rice. 9. Kinematic diagram quartz watch ELF 3050:

1 - transfer head;

2 - transfer shaft;

3 - clamp;

4 - backstage;

5 - sprocket with wheel;

6 - bill wheel;

7 - clock wheel;

8 - minute hand trib;

9 - central wheel with tube;

10 - stepper motor rotor;

11 - stator of the stepper motor;

12 - stepper motor trib;

13 - transmission wheel;

14 - second wheel with a tribe;

15 - intermediate wheel;

16 - transfer wheel;

17 - cam clutch;

18 - winding lever;

19 - transfer lever with pin;

20 - rocker spring

A quartz oscillator is a source of highly stable oscillations located in an electronic unit.

The crystal oscillator block is printed circuit board with a quartz resonator, an integrated circuit and passive elements placed on it. The block is connected to the platinum with screws. The actuator in the clock is stepper motor, designed as an autonomous unit. The battery provides at least 12 months of continuous operation of the watch.

Operating principle and kinematic diagram The operation of the clock is as follows: the electrical signal of the quartz oscillator is subjected to division of its frequency and, after generating a pulse, is sent to the stepper motor. Pulse repetition frequency - 1 Hz. The stepper motor, in turn, converts the serial electrical impulses into intermittent rotation of the main wheel system.

Through the wheel system, the rotation of the engine shaft is transmitted to the hands and calendar device (if equipped).

The stepper motor trib (12) is meshed with the transmission wheel (13), the trib of which drives the second wheel (14). From the trib of the second wheel through the intermediate wheel (15) with the trib, rotation is transmitted to the central wheel (9). The pointer mechanism consists of a minute hand trib (8), a bill wheel (6) with a trib, and an hour wheel (7).

The transfer shaft (2) with the head (1) can occupy two fixed positions. If the watch has a calendar device, then the transfer shaft will be designed for three positions.

In order to move the hands, it is necessary to place the adjustment head in the second fixed position. The jaw clutch (17) must engage with the transfer wheel (16). Next, the rotation is transmitted to the pointer mechanism.

During the transfer of the points, a locking lever, mechanically connected to the transfer shaft, locks the transfer wheel and prevents the movement of the wheel system and the stepper motor when transferring the points. After installing the arrows and when the transfer head returns to the initial position, the lever returns to its normal position, ensuring the start of the stepper motor.

Disassembling the watch

Unscrew the locking ring and remove the housing cover.

Unscrew the battery spring screw, remove the spring and carefully, preferably using tweezers, pull out the element, taking it only by the cylindrical part of the housing.

Insert the battery into the mechanism and use a tester to check the serviceability of the electronic unit.

The positive probe of the tester is connected to the platinum of the clock mechanism, and the negative probe is connected in turn to the connection contacts of the stepper motor. In this case, the device needle should deviate to 1.4–1.5 V and oscillate within 1–2 mm with an interval of 2 s. If there are no such fluctuations, replace the electronic unit.

Then determine if the stepper motor is working properly. To do this, the tester switch should be set to the resistance measurement position.

Connect the tester probes to the contacts (terminals) of the stepper motor and measure the resistance of the coils, which should be within 3–4 kOhm.

Connect one probe of the tester to the clock plate, and the second to one of the terminals of the stepper motor.

In this case, the instrument arrow should be in the left extreme position of the instrument scale. Repeat the same with the other output. If during measurement the arrow deviates to the right, it means that the stepper motor coil is shorted to the housing. This engine needs to be replaced.

Remove the electronic unit. To do this, you need to unscrew the screw securing the current conductor, remove the insulating washer, unscrew the two screws securing the block to the platinum, carefully lift the block with tweezers, move it to the side and remove it from the speakers.

Press the transfer shaft support, pull the shaft out of the housing, and then the entire mechanism.

Remove the screws securing the stepper motor bridge. Remove the bridge, then unscrew the two screws securing the stepper motor and carefully pull it out using tweezers.

When removing and installing the stepper motor, you can only use brass tweezers, and for the power supply - only plastic ones.

Next, disassemble the switch mechanism. This requires removing the hands, two dial screws, the dial, three screws, the bridge, the hour wheel, the bill wheel, the dial wheel, and the minute hand trib. Then remove the calendar device, if present.

Disassemble the main wheel system. To do this, unscrew the screws and remove the bridge.

After disassembling the mechanism, the parts should be cleaned. Wash all parts except the power supply, stepper motor, dial, case glass, inserts, quartz oscillator unit and painted hands. All listed parts, except the stepper motor, are cleaned with a soft hair brush.

Watch assembly

Install the central wheel with tube (9), minute hand trib (8).

Press the central tube into the hole of the minute hand tube, then check the smooth rotation of the central wheel, as well as its axial and radial clearances. Lubricate everything seats central tube.

Assemble the wheel system. This is done in the following order: install the intermediate wheel (15) with a tribe, the gear (13) and second (14) wheels with tribes and the bridge of the main wheel system so that the brake of the locking lever fits into the groove of the bridge, secure the bridge with screws. Check the clearances of the intermediate and second wheels with the tribes and the smooth rotation of the system.

Assemble the transfer mechanism. To do this, you need to install the transfer lever (19), the clutch lever and the claw coupling itself (17), as well as the transfer shaft (2).

Check the smooth rotation of the shaft in the plate, install the locking lever and lubricate all parts.

Install the minute wheel with tribe, transfer wheel, bridge and secure it with screws.

Install the hour wheel (7).

Install the spring washer and dial. Screw the dial in place and then install the hour, minute and second hands. In this case, it is necessary to monitor the position of the transfer shaft; When installing the hour and minute hands, the shaft must be in the arrow position.

Using the transfer shaft, move the hands to the number 12 and set the second hand, coordinating its position with the divisions of the dial.

Minute, second and clockwise should be installed without using much force so as not to disturb the established vertical clearances in the main wheel system.

Insert the mechanism, mechanism fastening ring, and transfer shaft into the body.

Install the crystal oscillator unit, stepper motor and power supply. The stepper motor mounting screw should not be over-tightened.

Close the housing cover. After completing the assembly, the stepper motor should immediately start working, this will be visible by the movement of the second hand.

Oversized quartz watch

As an example, we will consider the mechanism of a desktop electronic-mechanical clock with a quartz resonator (Fig. 10).

Rice. 10. Design diagram of the quartz watch “Yantar” 59206:

1 - battery;

2 - terminals;

3 - gearbox mounting nuts;

4 - rear axle;

5 - locking device;

6 - screws for fastening the stepper motor;

7 - stepper motor trib;

8 - coil mounting screws;

9 - stepper motor;

10 - bill wheel;

11 - columns;

12 - clock wheel;

13 - panel;

14 - transfer shaft;

15 - central wheel;

16 - spring;

17 and 19 - intermediate wheels first and second;

18 - front axle;

20 - second wheel;

21 - electronic unit;

22 - electronic unit mounting screws

The mechanism consists of a stepper motor, a main wheel system, a battery and an electronic unit.

The quartz clock oscillator starts working when the batteries are connected to the electronic unit. To convert electrical energy The mechanical part is a stepper motor (9). From the trib (7) through the first intermediate wheel (17) the rotation is transmitted to the second wheel (20). The seconds hand is located on the axis of the seconds wheel. In order to set the minute hand in motion, the rotation is transmitted further, through the second intermediate wheel (19) and the central wheel (15), on the sleeve of which the minute hand is fixed.

The movement from the central wheel is transmitted to the bill wheel (10), and from there to the hour wheel (12). The central wheel assembly is equipped with a special device that allows you to coordinate the readings of the minute and hour hands. To set the exact time and move the minute and hour hands, a transfer shaft (14) is used.

To set the second hand to exact time a device for stopping the second hand (5) is used.

Disassembling the watch

Remove the cover and remove the battery and terminals.

Remove the electronic unit (21); to do this, you must, firstly, unscrew the two screws (22) securing the electronic unit to disconnect it from the panel columns (13) and the bridge (4); secondly, disconnect the electrical connector.

Remove the stepper motor (9); To do this, you need to unscrew the two screws (6) securing the stepper motor to the panel columns.

Unscrew the two nuts (3) securing the gearbox.

Remove rear axle(4), seconds wheel (20), first (17) and second (19) intermediate wheels.

Remove the second hand locking device (5), front axle (18), center wheel (15), bill wheel (10), hour wheel (12).

Remove the spring (16) and the transfer shaft (14).

Remove the speakers (11) by unscrewing the two nuts securing the speakers to the front side of the panel.

If necessary, disassemble the stepper motor. To do this, you need to remove the stepper motor rotor assembly, unscrew the two screws securing the coil and remove it. After disassembling, all parts of the stepper motor and gearbox, except the coil, must be washed in gasoline. To wash the motor rotor axis, you need to remove the coils and rotor, and carry out the washing itself with the magnetic circuits assembled.

The main problem with a stepper motor is usually a broken coil wire. Repair is only possible if the outer end of the wire is broken. The repair procedure is as follows: dissolve the coil varnish using amyl acetate near the torn end so that there is enough length to pull out the wire. Then use a soldering iron to remove any remaining wire from the terminal. Make 2-3 turns around this terminal and solder the wire again.

Dip a brush in a mixture of alcohol and gasoline and clean the soldering area, and then coat it with varnish.

The most common malfunctions of the electronic watch unit are the failure of the integrated circuit and the quartz resonator. These components are best replaced.

Defects in the main wheel system are corrected in the same way as in a mechanical watch.

Assembling and adjusting the watch mechanism

Install two columns (11). Place the spring (16) on the right column and secure its position with the stand pin. Then place the front axle (18) on the same column; the bend of the spring must fit into the groove of the bridge.

Insert the first intermediate wheel (17) into the hole of the bridge with the tribe facing up. Place a washer and a spherical spring on the axis of the second wheel (20) and also insert the second wheel into the hole in the bridge.

Lift the second wheel slightly and install the second idler wheel (19) and the locking device.

Install the rear axle and tighten the two nuts.

Place the main wheel assembly on the rear axle. Place the minute wheel on the front axle tube, and secure the transfer shaft (14) in the holes of the front and rear axles.

Place a bill of exchange wheel on the front axle axle, and an hour wheel on the minute wheel hub.

Place the panel (13) on top of the speakers and tighten the two nuts.

Place the coil on the base of the stepper motor assembly and secure with screws. Install the motor rotor on the axle.

Engage the rotor trib with the first intermediate wheel. Install the stepper motor and secure it with two screws.

Install the electronic unit into the corresponding motor sockets and secure it with two screws. Insert two terminals into the grooves of the panel and check the contact. If necessary, the terminal tabs can be bent.

To check the operation of the mechanism, connect it to a power source.

author Romanov Sergey Alexandrovich

Watches It is known that the orientation of watch collectors is hampered by the numerous fakes passed off as originals. For a long time, the fame of watchmakers and the value of their work have tempted tricksters and swindlers (by the way, also good craftsmen) to falsify them. And the reason for

From the book The Big Book of Aphorisms author Dushenko Konstantin Vasilievich

Clock See also “Time”, “Punctuality” We are crucified on the dial of a clock. Stanislav Jerzy Lec The clock hands are two hands that take away our time. Grzegorz Stańczyk Listening to the ticking of a clock, we notice that time is ahead of us. Ramon Gomez de la Serna Broken watch twice in

From the book Encyclopedia of Educational Games author Danilova Lena

Clock If your child can count and is familiar with numbers, teach him to tell time using a clock. Show your child a model of a clock (toy clocks are often on sale, if you were unable to buy them, make them yourself from a sheet of thick cardboard, sewing on the arrows, securing them on both sides

From the book Security Encyclopedia author Gromov V I author Nesterova Daria Vladimirovna

From book Great encyclopedia technology author Team of authors

Quartz watch A quartz watch is a device for precise time measurement, which uses oscillations of a quartz resonator to keep time. A quartz oscillator is used to excite the oscillations of the resonator. Quartz watches also contain a frequency divider,

From the author's book

Sundial A sundial is a device for measuring time by the Sun, it is one of the simplest chronometric devices, which is designed based on the daily movement of the Sun, and in rare cases, the annual movement. Represents the oldest scientific measuring tool,

From the author's book

Clock Clock – measuring device, which is used to determine the current time - hours, minutes, seconds. The need to know the time has always been there, and this contributed to the creation of devices for determining it. The very first device of this kind appeared already 3000 BC. e. –

From the author's book

Clock (device) Clock is a device for measuring periods of time with a periodic sequence of a given duration, measured in units not exceeding one day, starting from 3/4 seconds. Clocks are divided according to size and portability into tower, pocket,

In this article we will look at: general clock faults, quartz, electronic and wall clock faults, and causes their occurrence and possible ways elimination

Experts identify several typical watch malfunctions: wall, quartz, electronic, depending on the type of construction. All these different mechanisms What they have in common is that watch malfunctions result in incorrect time display.

For example, for mechanical devices, a delay of no more than 20 seconds and a rush of no more than 40 seconds per day are allowed. Anything that goes beyond the specified values ​​is considered a malfunction.

For other types malfunctions Deviations within other limits are considered. The most common reason for a watch to malfunction is:

• contamination of the clock mechanism
• moisture penetration
• or lubricant drying out.

This can lead not only to incorrect time display, but also to failure of the entire device, stopping the hour, minute and second hands. To troubleshoot your watch, you can contact service center, watch workshop or try to carry out repairs yourself.

For self-repair hours will have to acquire special equipment and tools (possibly homemade). Understand the circuit diagram of a clock mechanism. Complex watch malfunctions, or malfunctions expensive devices It is better to entrust the removal to professional watchmakers.

Quartz watch malfunctions

Quartz watch malfunctions usually provoked by the failure of the microcircuit that sends pulses to the generator. As a rule, it just burns out. Generators themselves rarely break down, and this usually indicates a severe impact.

The quartz crystal is practically eternal, the gears are also very strong and durable. The problem with troubleshooting quartz watches is that each model requires an original chip, which is not so easy to obtain.

There are no problems finding generators, and they are worth it mere pennies. However, keep in mind that the performance of the entire clock mechanism depends on its own performance. And one poor-quality element can render the entire device unusable.

Wall clock malfunctions

Wall clock malfunctions There are two types, depending on whether they are quartz or mechanical. Troubleshooting wall clocks is easier than actually troubleshooting wrist clocks. bigger size, and the need to use larger instruments. For example, there is no need for a microscope or magnifying glasses at all.

Electronic clock malfunctions

Malfunctions electronic watch often associated with battery discharge, or damage to the liquid crystal matrix. Also, often the cause of malfunction of electronic watches is the failure of the microcircuit.

Install a metal hanging loop if needed. The loop is installed on a special protrusion (“patch”) at the base of the rod.

The protrusion is part of the mechanism body, so the load is on the entire body and not on the rod. Watch weight when in use metal loop
For should not exceed 10 kg. plastic loop

no more than 5 kg.

Install the sealing rubber washer. The sealing washer prevents the mechanism from rotating on the product. It also relieves excess “tension” when the nut is tightly tightened. Pass the mechanism stem through the hole in the dial.

Something needs to be said about the thickness of the dial...
The diameter of the hole for the rod in the dial is 8 mm.

And when using a 9 mm shaped nut.

Install brass washer

Tighten the nut.

Do not tighten the nut too tightly. Overtightening the nut may damage the mechanism or affect the running accuracy.

Place the hour and minute hands on the minute counter.

To install the arrows, it is most convenient to use a tube of a suitable diameter. A simple ballpoint pen may be suitable for this.

The hour and minute hands should be set to 12 o'clock. Otherwise, the time will not be displayed correctly.

Set the second hand. When setting the second hand while pressing, you must hold the mechanism with reverse side

(shown in photo).

Thus, so as not to squeeze out the pin on which the second hand is mounted.
Curly nut The figured nut is used for two reasons: 1. Some people find it
appearance

more neat. Indeed, it looks more compact than a standard washer and nut. 2. A shaped nut allows you to “increase” the height of the threaded part by 1-2 mm. This becomes relevant when for some reason these millimeters are not enough. For example, there is no mechanism with a suitable thread height. As can be seen in the figure,

dial thickness

when using a figured nut (right), it may be larger than when using a regular nut when installed on a mechanism with the same thread height. The only limitation on the amount of “increase” is the position of the hour hand - it is necessary that the figured nut does not interfere with the rotation of the hand.
The diameter of the hole in the dial for a figured nut = 9 mm (1 mm more than for a regular nut), because she goes deeper into the dial. The rod has two parts:
Threaded part- for attaching the mechanism to the watch. A nut is screwed onto it.

Minute

- to install an arrow on it. Threaded part.
Below are options for mechanisms with different threaded parts. You can experiment and find the height you need. (here you can pick up the stock...)

Selection of stem for dial thickness:

Thread height: 6 mm

Distribution of space on the thread:

Sealing
washer: 1 mm

Washer and nut: 1 mm

Remaining space for dial: 3 mm

Available stocks:

Elements 1-10 of 14.

View	Name	Minute type	Overall height (mm)	Thread height (mm)	Max. dial thickness (mm)
	S1 12/6	S1	12	6	3
	S1 16/9	S1	16	9	7
	S1 12/18	S1	18	12	10
	S1 Seiko 13/5.2	S1 Seiko	13	5.2	3.2
	S1 Seiko 15/6.7	S1 Seiko	15	6.7	4.7
	S1 Seiko 17/9	S1 Seiko	17	9	7
	S2 15/6.7	S2	15	6.7	4.7
	S2 17/8.7	S2	17	8.7	6.7
	S2 22/11.7	S2	22	11.7	10.7
	S2 23/14.7	S2	23	14.7	13.7