Each of us met with an unpleasant situation - the tank is filled with water, the float is raised to the upper position, and the water constantly leaks a little. There is a cardinal option - to completely replace the entire mechanism, but it is expensive and long. In addition, it is very difficult to find suitable elements for old tank models. Repair can be done by yourself and you won’t have to buy any spare parts.
Necessary tools
For repair, you only need a clerical knife and a small screwdriver.
Leakage Repair Technology
First you need to find out the cause of the flow of water. Unscrew the drain button on the thread and remove the cover.
The button is easily unscrewed by hands, the right ordinary thread. There are two mechanisms inside: a water drain and a shut-off valve with an adjustable float.
If the water level is slightly higher than the overflow pipe, and the water is above the upper surface of the float, then this indicates a malfunction from the inlet (shut-off) valve. If it is lower, then the leakage is due to problems with the drain valve.
How to eliminate both causes of leakage?
Drain valve repair
It crashes for two reasons: a critical deformation of the rubber cuff or solid particles of dirt getting between the elastic and the saddle.
Drain the water and close the tap to supply water to the tank. Remove the drain device, it is placed in a plastic case and is removed in the assembly by turning counterclockwise. The release of the clamp is accompanied by a characteristic click, after it, remove the mechanism.
Inspect the condition of the rubber o-ring. Most often, due to prolonged loads, the cuff is deformed and does not fit snugly against the valve seat. There is also plaque on the surface from water, adhesion of solid particles.
Remove the plastic lock washer, it has a technological slot, unclench it, the diameter will increase and the part will be removed from the tube.
Take out the rubber ring, rinse it well, turn it 180 degrees and put it back. Be sure to clean the valve seat. Work carefully, parts are delicate, may get scratched or get other mechanical damage. Fasten the drain device; insert the antennae into the recesses and rotate the housing clockwise until it clicks. The tank is ready to use.
Inlet valve repair
The technology is a bit more complicated due to the need for a complete disassembly of the mechanism. The water supply can be top or bottom, this does not have a big impact on the repair process - the principle of the mechanisms is no different. Most often, a specific protrusion appears on the elastic band at the place of contact with the water inlet opening. It clings to the edges and does not allow hermetically shut off the water supply when the tank is full.
Unscrew the lower fixing nut, remove the device. A silicone membrane is installed under it, a plastic valve with holes lies on it, it cuts a stream of water and evenly distributes it along the inner diameter.
The mechanism is used to increase the reliability of the shutoff valve, but the leak is not due to it. For warranty, it is recommended to flush the membrane from contamination.
Start disassembling the shut-off valve device. Click and remove the float from the body.
Remove the body of the float - take away the locking tab and remove the element up along the toothed axis.
Disassemble the installation location of the water shutoff valve.To do this, press the fixing axis with a small screwdriver, first on one side, then on the other, it should exit the holes. Remove valve actuator lever.
A rubber gasket is installed in the lever to cover the inlet. Pay attention to her standing. As already mentioned above, during operation, the valve sags and extrudes into the hole.
Using a screwdriver, a needle or a knife edge, carefully remove the rubber from the slot. If the mechanism is being repaired for the first time, it is enough to turn it on the other side and insert it into place.
If this method has already been used, then you need to cut it in half. This should be done with the help of a clerical knife. Place the valve on a flat plate and cut into two even parts. It is very important to keep the knife blade strictly perpendicular to the axis, the closure density depends on the fulfillment of this condition.
Install both halves in the slot, the second should be turned straight cut straight up, it will shut off the water supply.
Reassemble the valve in the reverse order; check the lever travel. Put on the adjusting case, insert the float into it.
Adjust the filling level of the tank, the valve should be raised about one centimeter above the body during closing, in this position, snap the locking mechanism.
Screw the device in the tank, check again and, if necessary, more accurately adjust the stroke, the water level depends on it.
Replace the drain valve body. Turn on the water supply and check the functionality of the tank. Everything is normal - close the lid and tighten the drain button.
Drain the water several times and make sure that there are no more leaks.
Conclusion
At first, there may be a slight leak, but it will soon stop, the valve will find its place. If you were not able to evenly cut the gum, then the surfaces can be adjusted on a fine emery cloth. As soon as possible, it is recommended to buy a repair kit for the drain tank of your model in a specialized store, you already know how it looks.
