How to fix a toilet flush tank if water is leaking from it? What to do if the toilet is leaking. How to fix a leaking cistern Toilet cistern is leaking, what to do

Serviceable plumbing guarantees the usual level of comfort. As long as everything is in order with the toilet, it seems that there can be no problems. But things do not last forever, sooner or later they break - and the toilet tank begins to leak water and leak.

At first glance, this is a minor inconvenience, but even a minor breakdown can cause major troubles. Why is the toilet tank leaking? What can be done in this case?

If the toilet tank is leaking water, you need to urgently find out the cause and fix it as quickly as possible. Every day the cost of a breakdown will be higher and higher, because the meter continues to spin.

And if the situation gets out of control, everything could end with flooding of neighbors and impressive amounts of compensation.

To understand the reason for the tank leaking, you will have to remove and disassemble it. This must be done very carefully, without damaging the sealing gasket.

It happens that there are several minor breakdowns. For example, the toilet is constantly leaking, but the coupling has lost its tightness and is constantly leaking a small amount of water.

The owner of the apartment may not even notice it, but very soon the neighbors below will have a wet ceiling in their toilet, and complaints are inevitable.

Little things like the sound of running water, an increase in utility bills, and the risk of harming your neighbors add up to a very unsightly picture.

Therefore, you should not waste time and wait for all these troubles; you need to solve the problem once and for a long time.

The best preventative measure to prevent leaks is professional installation and regular toilet inspections. Once every 3 months you should check the tightness of the connections and the functionality of the gaskets. To prevent debris from entering the tank, it is advisable to install a coarse filter

Design and operating features of the tank

To repair a toilet tank, you need to have a very good understanding of what elements it consists of and how it works. The market offers many different models. Let's look at the most common ones.

Designs of popular models

The most common types of toilet flush tanks are designs combined with a bowl (compact) and wall-hung ones. The first ones are convenient because during installation you do not have to install a special exhaust pipe.

And secondly, a stronger pressure is created, due to which the toilet bowl is better cleaned.

The disadvantages of hanging tanks include louder noise when flushing, and additional elements complicate the design, which increases the risk of breakage.

However, in general, they are no less convenient and practical than those combined with a bowl, which is why they are very common in modern apartments.

Now that aesthetics is becoming as important a criterion for choosing plumbing fixtures as convenience, many apartment owners have begun installing installations.

A cistern of this model is mounted into the wall, and it becomes invisible. There is a special button on the panel for flushing.

Due to the hidden installation, this design is a little more difficult to repair if something happens to it.

The advantage of modern models of toilet cisterns is the possibility of modular repair. All components wear out approximately equally. In order not to repair one part after another, you can replace all the shut-off valves at once

Trigger mechanisms can also vary, and the convenience and durability of operation often depends on this.

For closed flush tanks, water release buttons are most often used, but there are designs with chains or levers that are installed for hanging models.

Mechanical triggers are designed so that the water drains while the button is pressed, while automatic ones are triggered even after a single short press. Failures in mechanisms of the first type are less common, but the difference is still not fundamental, because both types are quite reliable.

As for the material, the most common models are ceramic and plastic, although in some apartments you can still find cast iron rarities.

Plastic and earthenware tanks are very convenient and rarely burst. Usually the cause of their failure is mechanical damage or manufacturing defects.

Models of tanks with two buttons are very convenient, which allow you to select the water flow mode - full and economical. Designs of this type use membrane drain valves, thanks to which water does not flow out completely when you press the economical drain button

Main parts of the drain device

A cistern of any design consists of a bowl, a fill valve, a drain and overflow mechanism. The bowl is a durable container that holds water for flushing the toilet.

It rarely fails, but if this happens, the tank must be replaced. Repairs may only be a temporary measure while the owner chooses a new model. The valve is designed to regulate the water level in the drain tank. It is equipped with a special float that functions as an indicator of the amount of water.

The float is attached to the valve by a brass rod. In modern models, the valve is located at the very bottom of the cistern bowl, and in older models, on the side.

The drain and overflow system is a fitting with start buttons. Most often, the entire mechanism is made of plastic and is activated when you press the water release button. The drainage system is connected to the overflow mechanism to prevent water from spilling out of the bowl. The excess is drained into the sewer, and this process is regulated using a float valve.

The video shows a step-by-step diagram of disassembling the tank into individual parts:

The principle of operation of continuous and wall-mounted models

Cisterns connected to the toilet bowl are activated when the trigger button is pressed, and water is drained until the button is released.

When the drain valve is open, the overflow mechanism is closed.

When the water level drops to a minimum, the float valve opens and the valve closes. This happens because the indicator float descends to the lowest point of the bowl. When the tank is completely empty and the float is at the bottom, water begins to fill the bowl. It enters the tank until the float rises to its original place. At this moment the valve shuts off the water supply.

Wall-mounted models work on a slightly different principle. The functions of the drain bowl are performed by a special siphon in the form of a corrugated tube. When the trigger is pressed, water flows out through the open part of the tube.

When the water level drops, the float valve opens and the container begins to fill until the indicator float returns to its place. When the float rises, the float valve closes, preventing liquid from overflowing.

A detailed explanation of the design and operating principle of the cistern from a specialist:

The main causes of external leaks

What to do if the toilet tank leaks and water ends up on the floor? First you need to understand the reasons. There are two main components, failure of which leads to troubles of this kind. This is the gasket that is installed between the tank and the toilet bowl, and the screws that connect the compact structure.

The causes of external leaks can be either loose installation of the drain tank on the bowl, or a violation of the technology for installing the sealing gasket.

Also, the tank may leak due to natural wear and tear or an initially poor quality gasket. In all cases, the essence of the problem lies in the lack of tightness of the connections.

Sealing gaskets for toilets are available in every hardware store. They are made of silicone, rubber or polyurethane. Any of the materials copes with its tasks perfectly. The main thing is that the new gasket is not hard. You can check it by squeezing it in your hand. The surface of the product must be smooth and even

How to replace a leaking gasket?

First of all, turn off the water and empty the tank. After this, it can be removed by unscrewing the two screws connecting the structure. In relatively new toilets, the screws do not have time to become rusty and are easily unscrewed.

If the screws are seriously “grown”, you will have to be careful when unscrewing. It makes sense to consider the option of completely replacing the structure, because... problems may arise simply because the toilet has served its useful life.

In this case, breakdowns follow one after another, and soon after repair you will have to face new troubles.

When the parts of the structure are separated, you can remove the sealing gasket and check for leaks. To do this, it is compressed. If it has hardened and lost its elasticity, it's time to buy a new one.

If everything is in order with the gasket itself, then the problem is due to incorrect installation, but even in this case it is better to install a new one.

Before installing the gasket, the joints are thoroughly cleaned and dried. The new part is placed in the same place as the old one.

To guarantee the tightness of the connection, it can be glued with a special silicone compound. It is applied to parts of the structure and to the gasket itself on both sides.

After installing the gasket, the tank is installed in place, tightening the screws tightly. In this case, you need to monitor the applied efforts so that the connection is tight, but the earthenware does not burst.

All that remains is to tighten the nuts and wait for the silicone to set. The toilet can be used after 2-3 hours.

Silicone sealing compounds are designed for gluing rubber, metal, and plastic parts. After drying, they form a dense, impenetrable mass that is resistant to all types of influences.

Eliminating leaks at the connecting screws

Leaks at the installation sites of connecting screws occur in two cases:

• if the toilet was initially installed unprofessionally;
• if the seals are dry.

To eliminate the leak, unscrew the screws, but you do not need to remove the tank bowl itself. Most likely, the flat rubber seals have become unusable.

They will have to be replaced, preferably with conical gaskets, which ensure a tighter fit of the parts.

To install new fasteners, put a metal washer on the screw, then a gasket (if it is conical, then the wide part is towards the screw head).

When securing the structure, you need to evenly distribute the efforts, alternately tightening first one and then the second screw. This will help avoid distortions. If the tank is installed correctly, all connections will remain tight.

Distortions will lead to new leaks or cracks in the plumbing fixture.

Each toilet model has its own design features, so when disassembling you should be very careful, remember the location of each part, the specifics of fastening and other nuances. This will help to properly assemble the toilet after repair.

How to eliminate internal leaks?

Internal leaks are those when the tank leaks water into the toilet bowl. In this case, the floor remains dry, but water flows uncontrollably into the drain.

Such a breakdown cannot cause a “flood” in the apartment, but it will affect utility bills. Although the water only drips a little, quite a lot can flow out in a day.

Adjusting the overflow tube

Most often, the tank float is faulty: it does not completely cover the drain hole. Sometimes it happens that the overflow pipe is not configured correctly or the drain mechanism itself is damaged.

The easiest way is to check whether the overflow tube is adjusted correctly. To do this, open the tank and lift the tube slightly. If water overflows into the tube, then the cause of the malfunction is in the float valve.

If not, you just need to adjust the float by slightly bending the lever.

To improve the operation of the drain mechanism, sometimes little things are enough - just correct and clean the mechanism components that may accidentally move or become clogged under the flow of water.

Minor repair of the drain mechanism

To repair the float, unscrew the plastic nut that secures the tank to the toilet. There is a rubber part here that is responsible for shutting off the water.

It needs to be removed and washed thoroughly, removing all dirt from the place where it was located. After this, install the rubber band again and check the operation of the tank.

If after cleaning the rubber the toilet tank no longer leaks, then the repair can be considered complete. If water still flows, then the part will have to be replaced with a new one.

You can buy it at any construction or hardware store.

You can learn how to replace tires correctly from the video instructions:

Valve problem - what to do?

Sometimes the toilet tank leaks because the flush valve does not completely shut off the water. This happens if debris gets into the tank or the device itself is broken. In the first case, it is enough to simply clean the container by removing dirt from under the gum.

If normal cleaning does not help, you will have to change the valve rubber, because... It dries out over time and can no longer fit tightly to the drain. As a temporary measure, you can simply turn it over to the other side.

A broken valve needs to be replaced. How to do this is described in detail in the video:

Minor faults in the cistern

The most unexpected problems can arise with plumbing fixtures. Some of them do not affect the comfort of use, but cause minor troubles.

For example, the tank may simply make too much noise when filling and disturb nighttime sleep. If the toilet is noisy, you can install a muffler (flexible plastic tube) or a stabilizing float valve with a special chamber.

If you have already had to start repairing a tank, try to immediately think about how you want to improve its operation and perform all the necessary manipulations in one go.

Whatever the reasons why the toilet tank was leaking water, after repair it is imperative to correctly adjust the operation of the float and overflow system.

This will help prevent future leaks.

If you notice that water is constantly leaking from the tank into the toilet, you need to immediately find a solution to this problem, since the noise will interfere with sleep at night, and rust will soon form on the toilet itself. In addition, the water meter readings will also not be particularly encouraging.

Let's try to figure out the reasons why water flows, because further actions depend on this. Next, we’ll look at several possible options for how to fix a toilet leak with your own hands.

Definition of failure

Experts do not risk saying for sure that the toilet is leaking for one reason and the solution to the problem is also the same. Each reason may have its own characteristics depending on the design. However, the “classical” design is still most widespread, so it is better to consider defining the current problem using it.

The first place without a doubt can be assigned to the overflow of the toilet, which is due to the fact that excess water leaves through the overflow. The problem in this case is this:

1. Over time, the rubber gasket can become deformed, that is, the rubber loses its former elasticity, resulting in a loose seal and the toilet tank leaking.
2. Poorly pressed gasket to the outlet of the drain valve also does not hold water. It is not necessary that the gasket has become deformed or lost its elasticity - it is simply not pressed against the toilet part enough - that is why water is leaking.
3. The pin that holds the float in the valve body may rust or wear away.
4. The tank often leaks due to a crack in the body.

If the toilet tank does not leak, but the problem still occurs, perhaps the problem is in the bolts that secure the tank and the toilet itself. During the operation of the structure, quite often the bolts rust and the plastic ones burst, which is why water leaks.

In third place in terms of prevalence is the reason associated with the rubber bulb. The problem is that over time, this toilet part may lose its elasticity, becoming more rigid. As a result, the bulb cannot take the necessary shape to retain water after flushing.

Another problem may lie in a malfunction of the drain tank itself due to the displacement of the float lever or its skew. The reasons for these factors are as follows:

• a hole has formed through which water flows into the float;
• after using the toilet for a long time, the lever itself may move;
• Low-quality parts were used during repairs.

The reasons why water constantly flows in the toilet can be eliminated if you put some effort into it.

Fixing Toilet Overflow and Bolt Problems

The most common problem that causes water to flow in the toilet is an overflow of the tank. So let's start with a simple experiment.

Remove the cover. After this, you should slightly raise the float. If this helps and the tank does not overfill, then the search for the problem is completed at this stage. It is enough to pull the float lever a little so that the water stops flowing earlier.

Another option is that water continues to leak. The problem may be in the valve, so it should be carefully inspected. Initially, take your time with the pin that secures the float lever in the valve - it should be in place and intact. Otherwise, you will have to replace it with a piece of thick copper wire. At this stage, you need to inspect the hole into which it is attached, because if its size increases, the entire valve will have to be replaced.

And the last possible option, when after the above inspections and even actions, water still flows in the toilet, is a worn valve gasket. It cannot be purchased separately, so the question regarding whether a cracked valve or gasket is to blame loses its practical value.

What to do if the water in the tank is less than the overflow level, but the toilet itself is leaking? Quite often, this description is due to the problem of the unusable bolt that holds the shelf and toilet together. This is usually characteristic of older models of structures, where manufacturers still used steel bolts. Of course, over time, bolts deteriorate when exposed to water, so they should be replaced periodically.

The process itself involves the following:

1. Shutting off the water supply.
2. Removing the cover.
3. Emptying the tank.
4. Disconnecting the flexible hose.
5. Unscrewing the bolts.
6. We tilt the tank to remove the shelf from the cuff.
7. Remove excess liquid and place the tank on a flat surface.

Upon completion of the repair, the structure must be reassembled. It is important to not tighten the new bolts too tightly, since the material of the toilet bowl is quite fragile.

Replacing or repairing a bulb or float

If the toilet is leaking due to the loss of elasticity of the rubber bulb, which controls the water supply with a button, you should either replace it or try to repair it. To do this, you will first need to unscrew this part (counterclockwise, but when viewed from above, the position changes to the opposite) and disconnect it from the rod. When purchasing a new part, you should choose the softest one, otherwise this problem will arise again, and quite soon.

If it is not possible to buy a new rubber bulb, it can be temporarily repaired. To do this, simply attach a small weight to the rod, which will pull the bulb to the saddle, so that after flushing the water will not drain. Any weighty nut or washer will do as a load.

When water constantly drains due to a malfunction of the float in the tank, it can also be replaced with a new one. If a small hole is found in the float that is leaking liquid, an alternative, more economical option is to seal the hole with polyethylene or fused plastic. It is worth considering that such repair work will not eliminate the breakdown itself, but will only postpone its solution for a while. Therefore, it is better to do everything right right away.

Leaking water from the tank into the toilet can become a big problem because the flow of cold water increases greatly. This also leads to the appearance of limescale in the drain bowl. The drain tank has a simple design and repairing it will not be difficult, even for inexperienced users. Most of the materials installed inside are made of plastic, which greatly reduces their service life and leads to constant breakdowns. But how to fix a toilet in a short time if water is leaking?

Frequent problems due to which water constantly leaks from the drain tank

Faults that cause water to leak:

1. Water flows non-stop from the water supply pipe.
2. Water flows in a small stream into the drain bowl.
3. Draining from the tank occurs only after much torment with a lever or button.
4. The lever or button does not respond at all.
5. Leaks and puddles form near the toilet.
6. The tank is filling with an unusual loud noise.

Causes of water leakage in a small stream

Tank is faulty:

1. Overflow. The water supply should stop at a certain time (when the float is raised 2.5 cm below the pipe), but there are a number of reasons why this does not happen: the gasket in the tap is deformed; the gasket is not pressed well; the pin is rusted or deteriorated; The valve inside the tank is cracked.
2. The lever moved out of place and the toilet began to leak.
3. A rusty steel bolt or a cracked plastic bolt.
4. Hardening of the rubber of the pear (when the rod is raised, the pear also rises; if the rubber hardens, the pear does not take the desired shape and does not sit correctly in place).
5. If the plumbing is new, then a leak is possible due to improper assembly.
6. Malfunction in the cuff (water flows between the tank and the bowl).
7. Weak fastening of bolts and nuts (connection of the tank to the toilet shelf).

Also read our article, which will tell you in detail.
Drain bowl malfunction a rare occurrence, the main reason for this can be attributed to improper fastening of the toilet to the floor or wall.

Read also the material that will tell you what to do if.

If all the fastenings were made correctly, all the bolts are straight and well tightened, there are no cracks or backlashes, then most likely the problem lies in the tank.

Repairing and stopping leaks - how to fix and eliminate if water runs in the toilet

What to do if a malfunction is detected? First you need to inspect the float for any malfunctions. If the float lever is skewed, water will not linger in the tank (it will accumulate, overflow and immediately flow out). If distortions and leaks are detected, you should open the lid and simply adjust the lever: install it horizontally, 2.5 cm lower from the entrance of the pipe to the tank.

The float itself should be level and empty. There shouldn't be any water inside. If water is detected inside the float:

1. Take it out and drain the water.
2. Remove the hole through which water enters (heat the plastic or wrap the float in a plastic bag).
3. Attach the float back and watch it (if water gets inside).

Such measures are temporary. At the first opportunity, you should buy and install a new float.

Draining water after repeated actions with a lever or button indicates a malfunction of the siphon membrane. The following steps will help fix this:

1. We install the crossbar in place of the cover.
2. The float lever must be secured to the crossbar.
3. Completely empty the tank.
4. A nut connects the tank to the flush tube; it needs to be unscrewed.
5. Carefully loosen the siphon nut and remove it.
6. The faulty membrane should be removed and a new one installed in its place (remember that they differ in diameter and size!)
7. Reassemble all parts of the tank in reverse order.

A non-responsive flush button indicates damage to the draft. To repair, it is necessary to remove the faulty rod and replace it with a new one (in extreme cases, replacement with a piece of thick wire is possible).

To prevent the noisy intake of water from disturbing you, you can make a special muffler:

1. Prepare a flexible or plastic tube.
2. It should be installed in the tank in a vertical position, relative to the level. It should be located near the entrance to the float valve.
3. Make sure that the lower end of the tube is covered with water.

If even the installed muffler does not save you from noise, this indicates the need to install a stabilizing float valve. Such a valve will regulate the level of water flow.

Valve installation mechanism to fix leakage

1. Empty the tank.
2. Disconnect the float valve from the pipe.
3. Release the float valve.
4. Unscrew the nuts that secure the lever and remove the valve.
5. Install and secure the new valve with fixing nuts.
6. Reattach the float lever.
7. Fill the tank with water and install the lever at a distance of 2.5 cm from the water pipe.

In other cases, the entire water drainage mechanism should be replaced.

Water leaking at the bottom (where it connects to the toilet) indicates damage to the gasket. This seal is located where the tank is attached to the toilet bowl. Replacing the gasket requires completely removing the tank:

1. Turn off the cold water tap and drain all the water from the tank.
2. Remove the top cover and locate the two bolts at the bottom of the tank (the nuts are on the opposite side). Unscrew the bolts and pull them out.
3. Remove the tank and remove the damaged gasket, replace it with a new one.
4. Reassemble the tank in reverse order.

If, after removing the tank, it turns out that the gasket is not damaged (and not pressed through), this may indicate that the tank is poorly attached to the toilet. After assembly, it is necessary to tighten the nuts on the bolts(on the back of the tank). If the problem persists, you may need to use a special clamp to fix it. When tightening bolts, you must avoid severe distortions and the application of great force.

When carrying out any repairs to the drain tank, it is necessary to clean the rust and remove dirt and dust from the places where the bolts and gaskets are attached. How to repair the tank is shown in the video:

What to do to prevent the tank from overfilling and stop leaking

What to do if you want to prevent the problem from occurring? The following factors need to be kept in mind:

1. Installation of the device is best left to professionals. They will install the toilet correctly and secure all the bolts straight, without bevels or stripping the threads.
2. Do not apply strong pressure, displace or loosen it.
3. Handle the lever and drain button carefully: do not pull, bend, or hit (this can lead to internal damage).
4. Resolve minor problems that arise in a timely manner.
5. Replace consumables (bolts and nuts, gaskets, float, bulb and other mechanisms) in a timely manner.
6. Adjust the water supply to the tank (so that it is not excessive).
7. Monitor changes in the tank and under the toilet lid (water deposits; increased cold water bills; the appearance of drops or condensation on the tank and near the toilet; other similar problems).

Repairing a leak in the cistern is quite doable. Most breakdowns occur with the internal mechanism of the tank.

The diagram shows the internal mechanism of the tank

Replacing any part occurs intuitively, because all components are visible and can be easily unscrewed and removed.

During repairs, it is necessary to shut off the water supply! If the essence of the problem is not clear or fixing it is impossible for you, you should immediately call a plumber. He will quickly identify the breakdown and fix it.

Proper operation of plumbing means budget savings and a good mood. However, it is not always possible to avoid a toilet leaking after flushing. Unnecessarily leaking water from the tank causes excess water consumption. You can deal with the breakdown yourself, without resorting to the help of a plumber, if you know the algorithm for identifying the problem and how to fix it. The toilet is leaking, if you flush it, what should you do in this case?

Why does the toilet tank leak when I flush?

Why is water running in the toilet and how to fix and repair it? Leaking water from the toilet indicates that the plumbing fixture tank is faulty. The following facts speak about this:

1. There is a constant sound of water entering the toilet bowl between flushes.
2. A rusty coating appears.
3. Condensation collects on cold water pipes.
4. The numbers on the cold water meter exceed normal values.

Initially, correct installation of plumbing equipment will help to avoid such inconveniences.

Breakdowns that occur in the future can be easily corrected on your own by familiarizing yourself with the causes and methods of repair.

How does a toilet work?

Before determining the cause of the breakdown, why water is slowly dripping, you should remember the principles of operation of the toilet flush device.

How does a toilet work? Water flows from the water pipe into the flush tank. Recruitment in progress, p The reservoir fills, raising the float. Having reached a certain volume, the water closes the drain valve and further filling stops. When flushing, press the button (lever, pull the chain), the valve opens, water rushes into the toilet bowl. Next, the filling process should be repeated, however, the toilet tank leaks, preventing water from reaching the shut-off valve, or, conversely, overflows over the float.

Causes of failure when the tank leaks water and leaks

Before you fix a problem, you should find out its possible causes. So, we can highlight the main ones.

Incorrect installation and can it be fixed?

Typically, new plumbing fixtures that are not installed to code will leak within the first 6 months of installation.

You can find out and eliminate the cause of the malfunction yourself by disassembling and inspecting the tank for visible cracks, defects and checking the shut-off valve.

Water flows after drawing and filling - a malfunction of the drainage device

After a long period of use, the fittings wear out, causing breakdowns. Also, problems may arise much earlier if low-quality materials for the tank fittings were used in the plumbing.

To identify the problem, you need to close the water supply connected to the tank and observe the leakage. If water leaks when the water supply is turned off, the drain valve is broken. This can be due to blockages, salt build-up from water, or normal wear and tear. You can get rid of damage by giving the tank a “general” cleaning to get rid of plaque and random debris.

If the water remains in the tank and does not flow into the bowl, then the cause is an incorrectly adjusted float, or a clog in the automatic water supply system. In this case, you should try to adjust the water supply pressure.

We identify and correct the breakdown that causes water to constantly flow from the toilet tank

Tank leak can happen in different ways, so you first need to decide how the water flows:

1. Leaking through the overflow.
2. The leak occurs before the overflow begins.
3. Leaks between bowl and tank.
4. Along with the drain.
5. The water leaves through the overflow.

The toilet tank overflows and excess water spills over the overflow. This problem occurs for several reasons.

Mechanical damage to the flush valve body (button), due to which water leaks

Breakage occurs only with plastic fittings. Deformation or weak, not tight seal of the gasket.

Worn pin holding the automatic drain lever. Float lever displacement.

Before starting repairs, prepare the necessary tools: gloves, wire cutters, pliers and new parts to replace the old ones. Don't forget to turn off the water supply.

Displacement of the lever after flushing the toilet - how to repair

The lever shifts when you flush– The most common cause of toilet leaks. To get rid of the problem, it is enough to return the lever to its original position: below the pipe connection, strictly horizontally.

To eliminate other leaks through the overflow:

1. Remove the reservoir cap.
2. Try adjusting the float by raising it a few millimeters.
3. If the leakage has stopped, then you need to replace the float axis, or bend it (metal axis).
4. Turn the float lever slightly to shut off the water earlier.
5. The leak continues when the float is raised - attention should be paid to the valve.
6. The pin in its composition may wear out, then it should be replaced with a new one or, as an alternative, use copper wire. In the place where the pin is attached there must be a tight connection and no holes.

The solution is to replace the mechanism. Constant leakage when the valve gasket is tightly pressed leads to the cost of a new device.

To know what to do if the toilet tank is leaking, you need to determine the causes of the leak.

The first and most common cause of leakage is a loose fit of the pear, the walls of which have lost their elasticity. In this case, it is enough to simply replace the pear with a new one.

The second reason is corrosion of the seat, as a result of which the bulb does not fit completely.
Repair:
remove the pear
check and tighten all screws and fastenings of the lever,
remove corrosion with sandpaper.

A third reason could be poor float valve adjustment.
Repair: replace the gasket in the float valve if it is worn out, or bend the float lever.

The fourth reason could be a loose nut that secures the overflow base.
You need to remove the tank and just tighten it. If the nut is “stuck” to the tank, you just need to turn it 2-3 turns, clockwise.

If it leaks from under the cuff that connects the flush tank and the neck of the toilet, which is visible when flushing the water.
The repair is very simple - pull the cuff into place; for greater effect, you can tighten it with a clamp. If the cuff is worn out, it must be replaced with a new one.

Water may leak where the flexible hose is attached to the tank; this is a signal that the union nut (plastic) has burst.
Repair: it is better to replace the hose with one that is secured with a metal nut.

Fixing toilet leaks

Any plumbing equipment can fail, creating a lot of inconvenience for us. At the same time, it is very important to quickly navigate, find the cause of the breakdown and urgently eliminate it.
What could be the cause and how to quickly eliminate toilet leaks?

There are 3 main reasons for a leaking toilet:
1. Malfunction of the water supply fittings in the toilet
2. Malfunction of the toilet flush fittings
3. Drying of rubber gaskets

If a leak occurs, first try tightening the bolts, just don’t overdo it! The earthenware cistern or the toilet itself may crack. If tightening the bolts does not give a positive result, the following actions should be taken:

Shut off the water supply to the toilet tank.
Flush the toilet tank. Wipe the inside of the tank dry.
Unscrew the nut of the water supply pipe that secures it to the float valve.
Remove all washers and bolts that are on them.
Unscrew the nut securing the flush valve and remove the drain. If the flush valve seat is worn, it should be replaced. You also need to replace the old gaskets.
Place new gaskets inside the tank and insert the flush valve seat through them. Next, you need to screw the flush mounting nut under the tank.
Replace a worn out large toilet gasket.
Place the tank in its place and install the bolts with new gaskets. Tighten the bolts.
Connect the water supply pipe and check the assembly for leaks.

How to disassemble a toilet cistern

Sometimes the toilet causes a lot of trouble. You can deal with minor problems yourself without calling a plumber. To do this, below are recommendations on how to disassemble the toilet tank.

First, you need to turn off the valve on the pipe through which water flows to the toilet. Drain the water from the tank.

Then you need to carefully, so as not to break it, remove the tank lid and inspect the tank from the inside. Typically, the internal mechanism includes two devices. The first is a float mechanism and a fill valve, thanks to which the tank is filled with water and the water is shut off when it reaches a specific level. The second device is a drain mechanism that functions when draining water.

To remove the fill valve that fills the cavity, you need to unscrew the nuts with pliers or a wrench: on the hose that supplies water to the tank and on the wall of the tank, which secures the mechanism itself.

The drain mechanism should be carefully removed so as not to disturb its base. The upper part of the mechanism must be turned to the left and removed from the glass.

If the tank needs to be removed entirely from the toilet, then you should unscrew the fastening between the bowl and the tank.

Reassemble the tank in reverse order.

Toilet cistern design

It is not without reason that owners of plumbing fixtures are interested in the design of the toilet cistern. After serving for a couple of years, and sometimes immediately after installation, the tank can begin to present “surprises”. And of course, I want to look inside and find out what is the cause of the malfunction.

First of all, it should be said that drain tanks are different, depending on the manufacturer. But its fundamental mechanisms are filling and draining.

The filling mechanism provides for filling the tank with water when it is empty. The water level is regulated by a float, which can be easily set to the required level. And the shut-off mechanism closes the water inlet valve when it has reached the required level. When the water drains, the float moves down and the valve opens, allowing the tank to fill. The drain mechanism lifts the siphon, thereby opening access to water. The drain siphon resembles a plunger in appearance and its function is to ensure the tightness of the drain hole. And of course, each tank is equipped with a button that activates the drain mechanism.

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Why is the toilet tank leaking?

2. The bowl of the tank (float) is not adjusted, and water flows through the overflow.

3. When flushing, water flows between the tank and the toilet platform

4. Leak at the hose connection and the valve ball

5. Water flows from under the bolts securing the tank to the toilet platform

I have described the most common causes of toilet cistern leakage, and now I will write how to eliminate them.

Toilet cistern repair. Passes a pear or petal

Let's look at the first reason. We disassemble the toilet cistern: Remove the top cover of the cistern. It is necessary to inspect the pear


or petal.

Over time they may become deformed or develop build-up, first try wiping them with a rag to keep them clean, and also wipe the saddle to ensure a perfect fit. If it doesn’t help, then you need to buy a new pear or petal and replace it.

The tank valve ball (float) is not adjusted and water flows through the overflow.

We also remove the top cover, and if water flows through the overflow, try to adjust it. If the ball valve is in a tank with a float,

Then try bending the float lever. There are times when water gets into the float, then you need to remove the float, pour water out of it, and put it back on, and find out the reason for its leakage, and fix it; if the float is defective, then replace it with a new one. It may also not shut off the water due to wear of the rubber inside the faucet ball, try to pull it out and turn it over, or cut out another one if possible, or even replace the faucet ball with a new one.

If the ball crane is like this,


their models are slightly different from each other, but the principle is the same, then lower the float lower with the adjusting plastic pin. If this does not help, then replace it, or try to disassemble and clean it.

Possible malfunctions: wear of the rubber inside the valve ball - pull it out and insert it the other way, or scale has gotten into the valve ball, disassemble it and carefully remove it with a needle.

The design of the drain tank may differ slightly, but the circuit is the same.

When flushing, water flows between the cistern and the toilet platform

Try tightening the bolts that secure the tank to the toilet. There are defects in casting, then try to coat the cuffs with sealant. When tightening the bolts, do not overdo it, as the toilet platform for the tank may burst.

Leak at the hose connection and valve ball

It's quite simple here. Tighten the hose nut, or if the gasket has become unusable, unscrew the hose and replace it, and screw the hose back on.

Water flows from under the bolts securing the tank to the toilet platform

Try tightening the bolts a little with the nuts, again, if that doesn’t help, then unscrew them, coat the rubber gaskets that are in the tank with sealant, for such connections I use transparent plumbing sealant, and screw them back in.

Here I have described several reasons why a toilet tank is leaking and how to repair a toilet tank yourself. Read also: How to install a toilet on tiles, toilet installation.