Pumps dzhileks do-it-yourself repair

In detail: do-it-yourself jilex pumps from a real master for the site my.housecope.com.

Well pumps are used all over the world. After their invention and appearance on the mass market, the popularity of this equipment only began to grow.

Surface pump Jileks Jumbo for pumping station

However, pumps tend to break down, and the breakdown will have to be fixed as soon as possible. You don't want to live for weeks without water. It is about the repair of the pump that we will now talk about, and for the next example, we will take products from the Jileks company.

The pump is a fairly simple mechanism. Its design is not particularly complex, but this is only a comparative judgment. After all, it contains a motor, contacts, an impeller, a shaft, seals, a housing, etc.

All these parts interact with each other, which leads to their gradual wear. As a result, the pump will also need to be repaired.

Plus, it is worth noting that the pump works in rather difficult conditions. This does not apply to Jileks surface pumps, which are assembled together with hydraulic accumulators and installed in separate rooms. However, even such equipment often requires repairs.

What can we say about submersible pumps, for example, about the representatives of the Jileks Vodomet line. Find such equipment in a well or a well all the time. As a rule, they do not take it out for the winter, which only complicates the situation.

It is worth noting that due to the relative simplicity of the design, it is quite possible to repair all equipment with your own hands. This, of course, is not the best option, since if you make a mistake, you will not only not repair the pump, but only aggravate the situation.

Video (click to play).

However, in some situations, you can only do it yourself with your own hands. The main thing is to understand the design features of submersible and surface pumps, as well as their types of connections.

There are several of the most popular and well-known pump failures that should be highlighted separately. Diagnosing them is pretty easy too. For example, if electricity is connected, but the pump simply does not respond, then something has happened with the contacts or the supply wire.

Disassembled submersible pump, stopper removed from the top of the housing

It is quite easy to check this if you have the ability to disassemble the device and diagnose the contacts with a tester. The absence of a signal on one of the contacts indicates its damage. It is possible that by this time it will become damp, have an unnatural color, etc.

If all the mechanisms do not respond, then the cable is broken. This often happens with submersible pumps of the Vodomet type, since their cable is suspended and poorly protected.

The hum in the engine, uneven operation, clicks or "flooding" of the pump are all the result of problems with the engine or impeller. You can check the correctness of the theory if you disassemble the device and inspect it yourself. It is possible that the impeller is cracked or the bearings on the rotation shaft are out of order. These are the most common problems.

If the engine simply refuses to work, then the problem is already in it. Moreover, we already recommend not to mess with the engine. This is a rather delicate mechanism, especially on submersible models. For example, the pump engine Vodomet 50/25 cannot be disassembled at all, but this is typical only for some models.

Most often, the motor winding burns out, it can be replaced, but whether it will be beneficial is a pressing question. It is possible that it will be easier to simply replace it with a new one. Moreover, the Jileks company supplies spare parts for its products to almost all stores in the country.

In surface pumps, for example, in Jilex Jumbo stations, the engine may burn out altogether or wear out very much. All this is due to the dry running of the pump. Unlike submersible models, surface samples are very susceptible to this moment, and they suffer from dry running fairly.

If we are talking about pumping stations of Jilex Jumbo, then here it is also worth noting one wide breakdown, which occurs very often. It consists of problems with the pressure in the system.

There may be several reasons for this:

Jileks Jumbo pumping station under renovation

In the first case, the relay itself gets lost. It is easiest to check it, since the relay is easy to configure and rather primitive. If there are problems during setup, then the relay is to blame.

In accumulators, the diaphragm with air can burst or be damaged. This can only be checked with a full or partial disassembly of the tank. The lack of a sufficient amount of air in the membrane leads to an imbalance of the entire system and, as a consequence, a drop in pressure.

The pump can also react negatively, but this is extremely rare. As a rule, working elements fail, and the device simply cannot cope with pumping. But then you would have noticed the accompanying signs of breakage. For example, slight hum, low head, poor impeller rotation, etc. In all other cases, either the relay or the accumulator is to blame.

Now let's look directly at the repair of pumping equipment. It should be understood that repairing a submersible sample will differ from repairing a surface one.

To begin with, let's turn to the models of the Water cannon type. The Vodomet pump is a submersible sample that is available in different configurations. There are models in the 40/50, 55/35, 110/110, etc. However, they differ not so much in design as in the choice of specific components and sizes. Otherwise, their design is extremely simple and is repeated constantly.

Disconnected consumables, filters and water inlets of the Vodomet pump

Repair of a water cannon pump always begins with its disassembly. To do this, you need to carefully remove it from the well, disconnect it from the system and dry the pump from water.

We take out and dry the device.
Remove the top case or cover.
We remove the water intake mechanisms, we will have to use a vice. But remember that the inside of the case is hollow, and therefore it is important not to overdo it.
We disassemble the pumping part, if the breakdown lies there, then at this stage you will eliminate it. Otherwise, you will have to move to the engine.
Remove the plastic corkscrew ring and take out the engine.
We carefully pull out the wires and assess their condition.
After completing the repair, pour non-toxic oil into the engine and assemble the pump in reverse order.

It is important to note that the oil in the engine must be harmless. Glycerin is ideal as it does not harm or contaminate the surrounding fluid.

After disassembling the pump, it will be quite easy to troubleshoot the problem. Problem contacts can be wiped with alcohol or soldered. Broken wires are replaced with new ones or fastened in an artisanal way.

Damaged consumables or rotating parts are only replaced. It is cheaper to buy them than to repair them. Well, it is better to send the engine to a specialist who can disassemble, clean and repair it, as well as guarantee you a positive result.

As you can see, it is quite easy to disassemble and repair the Vodomet pump. Moreover, it does not matter which water cannon you choose, since the design principle remains the same.

Ready-to-use water jet pump

They act a little differently when repairing surface pumps and stations such as Jilex Jumbo. Here it is already necessary to deal with a specific solution to the problem. If the pump jams, then you need to remove the housing and check all systems.

We disconnect the equipment from electricity, the accumulator and drain the fluid in the hose.
Unscrew the back of the case.
We remove the moving parts of the case.
We disassemble the pump chamber.
We remove the impeller seals.
Pull out the engine carefully.
We disassemble with wires.
After completing the repair, we assemble the pump back.

As in the previous case, you can solve the problem with breakage at any stage. The advantage of surface pumps is that their casing is not one-piece, and it is easier to remove it. In this case, parts can be removed and disconnected inconsistently.

If there are problems with the impeller or consumables, then they are simply changed. You will have to get to the contacts through the engine's camera - this is the main problem, but there should be nothing complicated here either.

The accumulators are disassembled by disconnecting the hose and unscrewing the plate. Then the membrane is pulled out from there. It is advisable not to repair the relay yourself, as it is very easy to damage it.

Dzhileks pumps are pressure equipment for water supply, which has come into our use since 1993, when the Dzhileks plant was founded in the Russian city of Klimovsk, Moscow region.

Pressure equipment for wells and boreholes, for use in open reservoirs and sewerage systems, intelligent water supply systems and hydraulic accumulators, expansion tanks, pipes and fittings - the plant's product line is expanding and improving with each other.

Despite the fact that the products of the Dzhileks company are distinguished by their strength and durability, like any other technique, they require periodic inspection, prevention or repair. Fortunately, the range of accessories and additional equipment allows you to solve a problem of any level of complexity. A wide dealer network and a well-functioning system of service centers can always help with repairs.

But, given the specifics of the mentality of our people and, sometimes, the real lack of the ability to take the device to the service center, the Jileks pressure equipment can always be repaired with your own hands. However, first, let's figure out what and why can fail in pressure apparatus.
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Any pressure equipment gradually wears out, and, due to a number of reasons, it can periodically give its owners some inconvenience that requires urgent intervention. Fortunately, the design of the pumps is quite simple:

Partial disassembly of the Jileks borehole pump

case box;
electric motor;
seal system;
shaft with impeller;
pipe branch;
flow channel and check valve;
filters;
electric cable.

The most common problems that consumers of pressure equipment may encounter can be:

when connected to the network, the equipment does not turn on - you need to test the contacts, drive and cable;
increase in noise or occurrence of vibrations during the operation of the equipment - check the motor, shaft bearings and impeller;
the motor does not respond - it is necessary (if possible in a particular model) to check and replace the winding;
a relay or a hydraulic accumulator fails - most likely the reason is a ruptured membrane or a level of water pressure in the system that is different from the one stated in the technical data sheet of the product;
the pump does not turn off - most likely the problem is a malfunction of the Jileks Crab automation unit.

Consider the most common models of pressure equipment Vodomet, which have a similar structure of the apparatus. This is a model range of a submersible pump marked Profi - improved specifically for work in wells with sandy walls and bottom.

Cleaning the pump Jileks Vodomet

Models 40/50 (75), 55/35 (50/75/90), 110/110 (75H / 110H) practically do not fail from overheating, because equipped with an annular slot for cooling the engine with water... In addition, the valve and piston system is excluded from their design, which contributes to greater durability and added filter systemwhich does not often clog the inlets. And two seals for insulation and sealing of the electric motor and an external thermal switch greatly facilitate the process of diagnostics and repair.

Systems of old models Vodomet 60/52 (32/72/92) and 115/75 (115) designed for static water levels from 5 to 25 meters. The main difference between the models is the different number of steps.

Repair of the Dzhileks Vodomet 60/52 submersible pump should be started with careful disassembly of the device, after an external examination and diagnostics. If you are disassembling the device for the first time, it is important that the diagram and order of the parts to be disassembled during the subsequent assembly are strictly observed.

Following the instructions of the Jileks company, the repair of the water cannon pump begins with unscrewing the water intake hole. Then we remove all the parts from the shaft, and only then we take out the white ring of the stopper and the engine from the outer glass. The procedure is as follows:

install the device in an upright position;
tapping on the fitting cover, move the ring from its place with the engine, which cannot be pulled out simply through the thread;
install the device in a horizontal position and, pulling the cable back a little, move the engine back;
put a screwdriver on the ring and move it so that you can turn it across the body;
we take out the ring and the engine;
disassemble the compartment with the wiring and check the capacitor compartment for moisture (especially if the device was shocked);
checking the oil;
we check the covers between the steps and the impellers for the degree of wear (we pay special attention to these details if the apparatus hummed, but did not pump water);
checking the filter grids.

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The drains are specially designed to pump liquids of varying degrees of contamination from the required space. All models of this kind are equipped with safety floats to prevent dry running and sealed bearings. Otherwise, the modifications differ from model to model in details.

You can repair a faulty Jileks drainer with your own hands if there are two problems:

the device does not turn on;
the device hums, but refuses to work.

In the first case, you should pay attention to the possibility of failure of the capacitor or the winding. The disconnection of the device can be caused by a short circuit due to voltage surges and a burned out winding. In addition, the pressure unit may shut down if the impeller or float is jammed.

In the second case, either the connection does not work (the cable is frayed outside or inside), or problems with the valve or stem. The stem is broken or the mountings on the shock absorber are loose. Broken stem cannot be corrected on its own.
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The pumping station is a self-priming surface centrifugal pressure apparatus with an ejector and a piping system. Models of this series are designed for horizontal installation and pump from 3 cubic meters of water per hour. The models differ in the engine noise level and the presence of automation, which is needed to monitor the water level.

Partial disassembly of the Jlex pumping station

The Jileks automation unit must be configured in such a way as to turn off if the water level falls below the declared minimum according to the technical passport. If the tuning and adjustment of the station is incorrect, then it will not turn off in time, which will lead to breakdowns.

Consider an example of repairing a pumping station Jileks Jumbo. They are equipped with a pressure switch RDM 5, a tank with membranes (hydraulic accumulator), an electric motor, a centrifugal pump unit, a water intake with a filter and a piping system. The pressure inside the unit can be monitored using the arrow on the pressure gauge.

There are five main reasons why a station may fail or not work correctly:

Buzzing but not working. This happens if you leave your device without water and movement for a long time.The impeller could just stick to the body. Twist it manually and try to connect. If it still does not work, check the voltage level of the mains and the condition of the capacitor.
Doesn't turn on at all. Call the network, winding, cable tester. Perhaps somewhere the contacts just went away, and, as soon as they are connected, everything will work again.
It pumps water constantly and does not turn off. You need to configure the relay. It can be adjusted with two fixing springs or screws (depending on which relay is installed in your station model).
The flow of water is intermittent. The problem is the depressurization of the pipeline or joints. It is also worth checking the water level.
Too frequent switching on of the device with an uneven flow of water. It is necessary to check the setting of the relay and the integrity of the constituent parts of the accumulator tank. Either you have to change the unusable membrane, or the tank is cracked, or the relay itself is broken.

We disassemble the pump Jileks Vodomet

Recently, well pumps have become popular. As soon as they appeared on the market, they were in great demand all over the world.

Even the most common pump models fail frequently. The pumps will have to be repaired as soon as possible. If you do not take action, then without water in the country, or in a country house, you will have to sit for a very long time. For example, let's take pumps from the Jilex company.

We all know that a pump is an ordinary device, a mechanism that does not differ in any complexity, but this is a judgment only at first glance.

The pump consists of an engine, an impeller, and in the middle of the pump there is a shaft, seals, and all this closes the housing. The above details are constantly in operation, which leads to gradual wear.

That is why it is necessary to occasionally repair the pump, since the device is constantly in operation and is in the water. Yes, not all pumps work in water, for example, such as the Jileks surface pumps, which work on the surface at the same time as hydraulic accumulators, which can also be installed separately on the surface.

But, Jileks surface pumps also need repairs. Let's take, for example, a submersible pump from such a well-known manufacturer as Jileks Vodomet. This device is constantly in the water (well or well). Some of us do not even take it out for the winter, and this is a gross mistake.

The Jileks Vodomet pump has a lightweight design, and it is really easy to repair it with your own hands. But if you are not an expert in this, you will not only fail to repair it, but you can also harm the pump even worse. But if the situation is such that there is a slight breakdown of the pump on your face, then you can do it yourself.

The main thing who is going to repair submersible and surface pumps must understand their design, as well as how they are connected correctly. The most famous pump failures, which we will talk about separately in this article.

Checking pumps is very easy and affordable.

If we talk about Jilex Jumbo, then in such surface pumps the engine often burns out and quickly deteriorates. And all this happens from the dry running of the pump. Surface pumps are more likely to break down from dry running than, for example, submersible units.

Components for the pump Dzhileks

Let's go back to the Jilex Jumbo pump. Breakdowns such as poor water pressure in the system occur in it. The main reasons for this: the pressure switch does not work and the hydraulic accumulator is not working, as well as general problems of the pump as a whole.

Let us first analyze the first breakdown, the relay is knocked out.

It is easy and simple to check its performance, and if you notice that everything is not so smooth with it, it is very easy to set up. If we talk about accumulators, then there are the following breakdowns:

Air diaphragm rupture. And this can only be verified when we disassemble the tank. If there is a large amount of air in the membrane, then the system is completely unbalanced, as a result of which the pressure drops.

Components for the pump Dzhileks Vodomet

The pump itself can also react poorly, but this is very rare. Most often, the pump runs out of working elements, and the pump simply does not cope with its task of pumping water. And if the working elements of the pump come out, during operation you notice a hum, the impeller does not rotate well. If there are other signs of breakdown, then the relay or the accumulator is most likely out of order.
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The time has come to consider the pumping equipment in practice. Here it is necessary to distinguish between the repair of a submersible pump and the repair of a surface unit. First, consider the common model of the Water cannon pump. Such a submersible water jet pump is available in several positions and configurations.

For example, such configurations as 40/50, 55 / 35,110 / 110. The main differences between them are size and equipment. As a result, they have the same design. You need to start repairing the water cannon pump by disassembling it. To do this, the water cannon pump is removed from the well, must be disconnected from the network and only dry it needs to be repaired.

Disassembly steps:

As mentioned above, dry the pump, then carefully remove the housing and cover on the pump.
Next, using a vise, we remove the water intake mechanisms. Everything is done carefully, since the body of the unit is hollow.
After that, you need to disassemble the pumping part, and if you find a breakdown there, then it will not be difficult for you to fix it at that stage with your own hands. If not, then move on to the engine.
In order to remove the engine, you need to carefully remove the corkscrew ring, as it is plastic, and it should not be damaged.
Then, as we got to the engine, we gradually pull out the wires, inspect them for charred wires.
After that, if everything is fine, you need to fill the engine with non-toxic oil and assemble the unit in the same order as it was disassembled.

Remember !! The oil in the pump engine should be filled with harmless.

Glycerin is suitable for these cases, it does not pollute the water. And after that, disassembled, it is very easy to fix the pump malfunction with your own hands. If you notice broken contacts, then it is better to re-solder them, or wipe them with an alcohol solution. And if the contacts are broken at all, then it is better to replace them.

If the problem is in the engine, then it is better not to repair it yourself, but to give it to a specialist who can give you a guarantee for its work in the future. As a result, we see that it is easy to repair the Vodomet pump and will not be difficult for you. And most importantly, it does not matter which type of Water Cannon you choose, since the principle of spare parts and the device are almost the same.

Dzhileks Water cannon borehole pump

A surface pump of the Jilex Jumbo type operates according to another principle of repair. It is much more difficult here, and you need to solve specifically the breakdown. If your pump is running out of trouble, then you definitely need to repair it, remove the case and check all the systems one by one.

Stages of work:

First, you need to disconnect the pump and accumulator from the 220 W electricity.
Then we drain the liquid that remains in the hose.
We remove the body by unscrewing the bolts.
It is imperative to remove all moving parts of the housing, and only then disassemble the pump chamber.
After that, remove the impeller and seals.
Pull out the engine carefully.
Now we look at the wires. And after that, if everything is fine, we assemble the pump in the same sequence as we took it apart.

We remind you. that the problem with pump breakdown is possible at any stage of disassembly.

The advantage of surface pumps is that their casing is not one-piece and can be removed in parts. Details in it are turned off and removed not sequentially, but this is a plus. Did you disassemble the pump and see the problem with the impeller and rasskhodniki? They are not repaired, but completely replaced with new ones.

If you decide to look at the contacts, then it is better to get there through the engine camera.To disassemble the accumulator, the hose is first disconnected, and then the plates are already removed by unscrewing. We pull out the membrane and examine it.

It is better not to repair the relay board with your own hands, since it is very vulnerable and can be easily damaged during repair.

It is not always possible to repair the Jileks pump on our own, but there are a number of minor malfunctions, for the elimination of which it is not necessary to contact a service center. Homeowners who operate pumping units of this brand at home will not hurt to know how to act in the event of a particular breakdown. After all, it is extremely uncomfortable to do without water supply for a long time, it is better to try to disassemble and repair the apparatus of the Jilex company with your own hands. If this fails, you can always take it to specialists.

The main thing is not to cause even more damage to the unit when trying to repair, so you need to act carefully and start by finding out the causes of the malfunction. To provide water supply to private households, 2 types of pumping devices are used:

submersible pumps Dzhileks of the Vodomet series;
surface pumping stations Jileks Jumbo.

The former are used to raise water from deep wells or wells with a depth of 20 m and to supply water to the interior of the dwelling. They are constantly under water, being submerged to the bottom of the well. Surface stations are located outside, in a technical room or a caisson, and are installed to pump water from wells or tanks, the depth of which does not exceed 20 m.

Before thinking that the Jileks submersible pump itself is faulty, it is advisable to make sure that the well is supplying enough water. If its performance has decreased due to various reasons (for example, silting), then when the level falls, the unit's automation will not allow it to turn on “dry”. Therefore, periodic failures of a household appliance indicate, most likely, a lack of water resources.

The second point: it is impossible to determine the breakdown and its cause, when the unit is submerged in the well, it will have to be raised to the surface in any case. An exception is the failure of the circuit breaker through which electricity is supplied to the Vodomet pump. In this situation, you will not have to extract it.

Possible reasons for the failure of the downhole unit are as follows:

failure of insulation or mechanical damage to the power cable;
break in the electrical circuit inside the pump;
wear of impeller parts;
wear of engine bearings;
abrasion of contact brushes;
short circuit in the winding and, as a result, its burnout.

The first 3 reasons can be found and eliminated on your own. If the unit, when turned on, emits a hum, but does not swing, and when you touch it, an electric shock follows, then the capacitor has burned out or dried out. As for replacing bearings, brushes or rewinding the motor, you will have to contact a service center for this.

These complex devices are quite reliable in operation. The first problems may arise 4-5 years after the start of work, provided that there were no emergency situations in which the pump had to rotate the impeller without water. And then these malfunctions rarely occur in the engine of the unit, but appear in other elements of the station:

membrane hydraulic accumulator;
pressure switch;
check valve.

The most common malfunction leading to complete failure of the pump motor is a malfunction of the check valve. It starts to let water through due to wear or clogging, the supply pipe is emptied, and the impeller rotates "dry". Also, the rubber "bulb" (membrane) installed in the accumulator tank may lose its tightness. There are also problems with the pressure switch, then the unit does not turn on when there is a water draw in the house.

Malfunctions associated with the interruption of the supply of electricity to the pump are characterized by the absence of signs of "life" when the power is turned on.

To check the continuity of the electrical circuit, you must use a continuity tester or a multimeter in resistance measurement mode. If the power cable is intact, then you need to go to the inside of the unit, for which it will have to be disassembled.

For disassembly, you will need a standard set of plumbing tools, available in every home and including:

screwdrivers;
pliers;
keys of different sizes;
nippers.

As an example, consider the process of disassembling a Jileks borehole pump model Vodomet 60/52. The sequence of work is as follows:

Disconnect the unit from the power supply and disconnect the suspension device.
Place the appliance in a vice with thick rubber pads between the jaws and the body. Unscrew the screws of the cover, in which the holes for the water intake are made, and remove it.
This will open access to the shaft with impellers, intermediate washers and cups mounted on it. They must be unscrewed and removed, laying out in a prepared place in order of priority, so as not to be confused during assembly.
Place the housing in an upright position with the shaft pointing down. To do this, you need a surface with a hole or a suitable stand.
With a light hammer blow on the top cover, slide the plastic retaining ring a few threads through the wooden adapter. Then pry it off with a screwdriver, turn it 90 ° and pull it out with pliers. If necessary, the screwdriver can be used as a guide that must be hit to turn the ring.
Pull out the machine motor following the plastic retaining ring. Handle it with care as the engine is filled with oil. It can be drained if necessary.
Dismantle the cover of the compartment where the wires are connected. It is attached to rubber seals and is knocked out with a flat screwdriver.

Now that the pump is disassembled, it is possible to check all the electrical circuits, right down to the motor windings. In a situation where the body of a household appliance is shocked, the capacitor must be replaced. Carefully examine the condition of the plastic impellers, cups and spacers. When worn out, they must be replaced, for which you will have to buy or order an appropriate repair kit. It makes no sense to put worn parts back, because when the shaft rotates, they still cannot create the necessary pressure in the water supply network.Unlike submersible pumping devices, in the Jileks Jumbo pumping station, the accumulator and pressure switch most often fail. The brushes of the engine may also wear out, but it is better to contact a service technician to replace them. Burnout of the windings is indicated by the smell of melted insulation and plastic, the problem will most likely be solved only by replacing the motor.

Repair of the pumping station Jileks Jumbo.

Repair of surface pumps and submersible pumps is different from each other.
The repair sequence for the submersible device is as follows:

The unit is pulled out and dried.
Removable top case or cover.
The water intake mechanisms are removed, for which it is better to use a vice. But when working, you must be careful, the body is hollow inside, which makes it weak.
The pumping part is disassembled. If a breakdown is detected at this stage, it can be eliminated, otherwise you will have to move to the engine.
The corkscrew plastic ring is removed and the motor is pulled out.
The wires are carefully pulled out and their condition assessed.
At the end of the repair, non-toxic oil is poured into the engine and the pump is assembled in the reverse order.

Tip: The oil in the engine must be harmless. Glycerin is best suited for this, as it does not contaminate the surrounding fluid.When disassembling the pump, problems can be eliminated quite easily:

Wipe with alcohol or solder problem contacts.

Broken wires are replaced with new ones.

Damaged consumables or rotating parts must only be replaced. It is more expensive to repair them than they cost.

It is better to leave the engine repair to a specialist who will disassemble, clean and repair it. In addition, it will give a guarantee for a certain period.

Surface pumps JileksIf there are signs of pump breakdowns, it is necessary to remove its housing and check all systems.
The order of work is as follows:

The equipment is disconnected from the electricity, the accumulator and the fluid in the hose is drained.

The back of the case is unscrewed.

Moving parts are removed.

The pump chamber is disassembled.

The impeller and seals are removed.

The engine is carefully pulled out.

The wires are monitored.

After completion of the pump repair work, it is assembled in the reverse order.

Video (click to play).

This type of device can be repaired at any stage. Their body is one-piece, which makes it easy to remove the pump, and the parts do not have to be removed and disconnected in series. If problems arise with the impeller or consumables, they just need to be replaced. Contacts can be accessed through the engine's camera, which is a major issue, but not difficult.
The accumulator is disassembled by disconnecting the hose and unscrewing the plate. After that, the membrane is pulled out. It is not advisable to carry out the relay yourself, it is easy to damage it.
How the repair of any Jilex pump is performed is well shown in the video in this article. Timely repair of any equipment is a guarantee of its long-term operation in good condition.