The device and repair of the drain mechanism for the toilet bowl

The flush mechanism for the toilet bowl occasionally gives a malfunction. To solve the problem, there are two ways: to call the plumber, waiting long and nervously for his arrival, or to fix the bathroom yourself. The second option is cheaper and faster, but for the proper conduct of the work it is necessary to know several nuances, including the device unit and the features of its operation.

general information

There are several designs of drain tanks on the market. Regardless of this, they are characterized by the presence of a pair of mandatory elements - a floor or wall container and an upper water tank. The principle of operation of the drain mechanism for the toilet tank is based on the operation of a hydraulic shutter, which includes flushing the water through the action of gravity after pressing the active element (button or lever).

In the traditional installation scheme, the cistern and toilet bowl are connected in one piece. The main advantage of the design is the combination of two elements in the absence of the need to install an additional exhaust pipe. Despite the efficiency and practicality of the classical scheme, analogues of the built-in and suspended type are becoming more and more popular. This allows you to hide the drain tank completely, and the system is launched by activating a push-button controller located on the panel.

Types of flush mechanism for toilet bowl

Most often, push-button or rod drain devices are used. The first option is relevant for closed containers, the button is located on the side or in the center of the tank. A mounting option for the device with two buttons is provided, one of which works in full mode, the second releases half the water. This allows you to save resources, if there is such a need.

Levers and chains are used in the system of hanging toilets. To operate the mechanism, it is enough to pull the lever connected to the chain. It is usually located on the side of the tank. Regardless of the type of installation, distinguish between mechanical and automatic flushing. Repair of these two structures also has its own characteristics.

Water supply system

The device of the drain mechanism in the toilet flush tank provides for two types of water supply, namely:

1. Lateral intake. It involves the placement of valves in the upper part. This design is preferred in domestic systems. Such a solution is characterized by low cost and ease of maintenance, however, it is distinguished by a high level of noise during water collection. In advanced versions, a special tube is provided that facilitates the supply of water directly to the lower part of the tank, which significantly reduces noise.
2. Lower type feed. This technology is used by various manufacturers, it is the flow of fluid from the bottom of the tank. This design works quieter, more efficiently, but also costs more.

The mechanism of the toilet flush tank

For the correct determination and elimination of malfunctions, it is necessary to have a general idea of ​​the structure of the mechanism in question. All modifications have a fairly similar design.

The interior includes the following elements:

1. Shut-off and drain valves that regulate drainage and prevent leakage of excess fluid. When filling the tank, water contributes to more tightly pressing a special valve to the drain hole. As a result, fluid leakage is stopped. If this functionality is not observed and the tank passes water, this indicates a malfunction or malfunction of the locking devices.
2. Bulk valve. It is combined with a water supply, focused on adjusting the water level in the drain tank. After reaching a certain level, the water supply stops. This principle of action is typical for the device of the flush mechanism of the toilet bowl with a button. Modern models are equipped with a filling valve in the lower bowl and vertical float placement.

There is no water supply to the tank: what to do?

This malfunction is one of the most frequent in the system. The main reason is clogging of the narrow part of the valve element. You can fix the defect yourself without any problems: you need to let all the water out of the tank, remove the valve together with the float and lever. Then, the opened hole must be cleaned with a needle or wire.

After that, unscrew the valve at the inlet pipe (a couple of revolutions), wash the remaining blockage with waste water. Next, you need to check for free passage of fluid. If everything is in order, you can mount the removed elements in their places.

Water leakage in the room

If water appears in the room, the drain mechanism for the toilet tank must be checked for leaks and integrity of the fasteners. At the same time, do not panic, blocking everything everywhere, calling plumbers and ordering a new toilet. You can solve the problem most often in the following ways:

1. Replace the o-ring between the tank and the toilet bowl, having previously checked for defects.
2. Carry out a similar operation with the mounting screw gaskets.

These malfunctions do not require a thorough diagnosis, they are detected by visual and tactile examination. If these methods do not help, it is recommended to remove the tank and replace the rubber seal on the drain channel, as well as related items on the mounting bolts.

Fix a model with a button

Repair of the drain mechanism of the toilet bowl with a button is carried out in the following sequence:

• The snap ring near the button is unscrewed. Extraordinary efforts should not be used in this case, since the element is made primarily of plastic.
• Remove the cover and proceed with repair.
• If it turns out that the float is in the wrong position, correct it by first removing the cover.
• In case of deformation of the pear, it will need to be replaced. To remove it, fix the float in the upper position, unscrew the pipe and drain nut, dismantle the entire part of the free mechanism.
• After removing the defective bulb, install the new model in the reverse order of removal.
• At wear of bolts of fixing of working elements make their replacement.

We will consider this process in more detail. It also consists of several stages, which include repairing the drain mechanism of the toilet bowl with a button:

1. Residual water is completely removed from the tank.
2. A cap nut is loosened, which is located between the float valve and the flexible eyeliner. In this case, the rubber cuff is released by tilting the tank shelf.
3. The faulty bolt and its twin counterpart are removed. This is important as new twin brass or stainless steel screws are selected further. Their size should be identical.
4. Dismantled faience under the seat of the pear, thoroughly cleaned. Similar manipulations are carried out with a shelf and a drain tank. Grease a pear with sealant, strengthening its tightness.

Assembly takes place in the reverse order. To prevent deformation of brittle material, it is necessary to gently tighten all fasteners with a small effort. After assembly, the assembly is checked by observing the presence or absence of leaks.

Faults and repair of the trigger

Do not rush to learn how to remove the drain mechanism in the toilet bowl if there is a lack of water discharge when you press the button. In the future, this unit will certainly need to be replaced, however, temporary repairs can be performed. Most likely, the cause of the problem is a violation of traction.

Temporary troubleshooting is as follows:

• Thrust is made of thick wire twisted in several turns. It will serve as a replacement for the original element, however, its duration is very limited. Over time, the element will begin to bend and fail.
• Before starting repair work on the drain tank, loosen the cover latches. To do this, rotate the decorative nut a couple of turns. This approach will allow access to the serviced node.

Replacing the drain tank

How to change the drain mechanism in the toilet bowl? To do this, open the cover. In its niche there are special drain holes with a diameter of 10-20 mm. They serve to supply water. One of these sockets serves for fixing the filling fittings equipped with a membrane-type valve.

Since the membrane is very sensitive to the quality of the liquid, its working life depends on additional filter elements installed. If there are no filters at all, it is better to replace such a part with a lever rod analog.

The usual method for solving problems arising from malfunctions of the toilet flush tank is to completely replace the parts. It does not take much time and does not require investment of large financial resources. For cheap modifications, new fittings are bought, taking into account the current dimensions of the connected pipes and threads.

Before installation, the joints are sealed, the fittings are pulled together with a nut and a bolt, decorative caps are inserted. Do not forget about the seals and the adjustment of the tightening force of the fasteners, which should be in moderation. Otherwise, ceramic and plastic parts may become deformed, after which you will have to start all over again.

Final stage

The bottom of the drain tank is equipped with a special hole for attachment to the toilet. It is made using metal or plastic screws with nuts. Each type of fastener has its own advantages and disadvantages: the metal version is more reliable and stronger, but it is susceptible to corrosion. Plastic is not so durable, but not afraid of moisture, although it requires the use of additional seals and gaskets. The main shutoff valves are mounted in the center of the drain tank, fixed with a washer and a special gasket.