The simplest, powerful, reliable do-it-yourself gas pump

An affordable way to make a motor pump with your own hands without extra costs

Most often, in dachas, the problem with watering does not rest on the complete absence of a reservoir, but on the difficulty of delivering water from it to the right place. Buying a large pump is a very expensive business, which is unprofitable due to the seasonality of the problem, and also because such a volume is not needed for domestic needs. The main task is to get water, for example, from a well and distribute it around the site. This requires a small size, preferably not very noisy unit. This is what we will talk about next.

Fluid leaking from the drain hole or from under the seating surface

There may be various symptoms of pump failure for VAZ-2109, 2107, 2114 and other car models. So if the coolant was of poor quality, there may be a leak in the drain hole area. In this case, leakage occurs, the formation of drops after the car is broken in. This can be determined by looking at the surface of the drain hole. Please note that a small leak in a new pump is normal. This happens during the first 10 minutes of engine operation. This is because the mechanical seal moves to the correct position.

If a new pump has a break-in period. If the pump is not operating properly but fluid continues to flow from the drain port, the pump is damaged. It is necessary to thoroughly flush the cooling system and install a new pump. Then you need to fill in the required amount of new antifreeze of acceptable quality.

If there is leakage from under the seating surface, this also indicates a malfunction. In this case, a sign of failure of the VAZ-2107, 2110, 2109 or other models is humidity, the appearance of drops, drops on the body or around a certain area. The cause of such a breakdown is incorrect installation of the pump or incorrect use of sealants and gaskets.

If the pump is new, remove it and check that it is installed correctly. It is especially important to pay attention to the tightening torques. If the pump is already old, it needs to be replaced.

We assemble a motor pump with our own hands from available parts

Since an ordinary person who is not able to assemble an internal combustion engine from scratch also wants to save his money, we will consider a simplified version of assembling this device. Anyone can make such a motor pump with their own hands. And for this we need the following:

• Removable pump.
• The engine is from an old lawn mower.

The process of assembling two elements into a single device is as follows:

1. After removing the braid itself from the engine, we should remove the pads from the clutch, which are secured with two bolts. We take them out and set them aside.

2. Now let's move on to analyzing the pump itself. Unscrew the four bolts around the perimeter and remove the cover from the device.

3. Under the cover we find a guide that is not secured in any way. To prevent it from moving anywhere, it only has a stopper. Therefore, we simply lift it up, remove it and set it aside.

4. Then we see the impeller, which also needs to be removed. We do this by scrolling it around its axis counterclockwise.

5. Under the impeller there are four bolts that secure the rear cover. Unscrew them and remove this element.

6. Now we can see the bearing mount. We need to push it out of the base. This completes the process of disassembling the pump.

7. We move on to the stage of assembling all the parts into one device. We insert the removed bearing instead of the pads into the open hole of the engine with the flange down and screw it onto the same four bolts.

8. Place the bearing cap on top. First, we do not fully tighten one screw, then the one that is located diagonally from it, and the second pair of screws is also tightened. This is done so that the bearing itself does not tilt in any direction and sits straight. After making sure that everything is in order, tighten the screws all the way.

9. Next, install the bottom cover. First, rubber gaskets are put on the screws, and only after that we tighten them. This way we will avoid moisture getting into the bearing located below. These screws, like the previous ones, are tightened using the crosswise method.

10. After firmly fixing the cover, install the impeller. This process is similar to removal, only the rotation is carried out in the opposite direction.

11. A guide is put on top of the impeller, and the top cover is placed on it. On the cover itself there is a protrusion into which the stopper on the guide should rest. Make sure they match each other.

12. The top cover is secured with four screws, which must be tightened in the order of one, as described above. The device is now fully assembled.

Our article on how to organize drip irrigation on your site will be useful.

Advantages of a self-assembled motor pump and rules for working with it

Some may think that assembling the motor pump described above with your own hands is unprofitable. In fact, it has a number of positive qualities:

1. Absolutely anyone can make such a product, even those who are completely far from technical nuances.

2. The device will cost several times less than buying a similar one in a store.

3. If necessary, the product can be disassembled and the motor can be returned to the scythe, which can continue to be used for its intended purpose and vice versa.

4. The noise output of such a device is not very high, an order of magnitude lower than that of diesel options, which also take up much more space.

The product is very light, it can be easily moved to the place you need. After connecting the hoses to the appropriate holes, do not rush to turn on the unit. First you need to unscrew the cap on the top pipe and pour water into it, then return the cap back. Then start using the device for its intended purpose.

Carrying out diagnostics

The first warning signal indicating a malfunction of the fuel pump is intermittent movement of the vehicle. The appearance of this sign means that DIY repairs are required.

Prolonged starting of the engine also indicates certain problems with the fuel pump. In one “wonderful” moment, the engine may not start at all. The root cause of this is a drop in pressure in the system, so the first thing to do is check for leaks.

You can check the structure of the fuel pump with a special indicator, which can be purchased at an auto parts store. Installation of this device is carried out by yourself according to the attached instructions. When the engine is turned off, the pressure in the fuel network is diagnosed. A decrease in pressure level to 1.6 atmospheres within 5-7 minutes indicates a problem with the fuel regulator or injector. Identifying the “culprit” is the stage preceding the repair itself.

The simplest, powerful, reliable do-it-yourself gas pump

The most expensive element of a homemade product can be considered the engine from a lawn mower. However, we will not break it, so if you wish, you can always turn the pump into a lawn mower again. Motors from chainsaws and similar equipment are also suitable.

Materials and tools used by the author:

List of materials:

— engine from a lawn mower; — steel plate (for the impeller); - wood board (for the base); — steel axle; — plug for pipe 90 (PVC); — adapter 90Х34 (PVC); - a corner and a piece of pipe (PVC); — fitting for the hose (for the pump); — bearing; - Super glue; - epoxy; - copper bushing; — a piece of hose (for the coupling); - screws, screws and other small items.

Where to begin?

There are some signs of failure of the VAZ pump. In these models, the pump ensures the passage of antifreeze through the cooling jacket, hoses and pipes, as well as through the radiator. During the warm season, even a slight malfunction of the pump can lead to overheating.

It is worth noting that the symptoms of a pump malfunction on the VAZ-2112, 2107, 2109, 2114 and some other models should be determined as soon as possible. The fact is that in these models the pump is driven by a timing belt. If the pump jams for any reason, it will fail. This, in turn, leads to deformation of the valves in the engine. This situation occurs in most cases when such a failure occurs. Therefore, it is important to independently identify signs of pump failure in the cooling system.

Knowing the symptoms of failure of the VAZ-2114, 2112 or earlier models, you can avoid expensive engine repairs or constant overheating.

It is worth noting that the cooling system water pump has a certain service life. Once the expiration date has passed, this system component must be replaced. In cars with a pump driven by a timing belt, this element of the system should be replaced every 60 thousand. km mileage This distance is usually around 48 months (with regular driving).

Design features

A piston pump is a simple design for manually pumping water. A motor pump is a pump connected to a motor. The function of a motor pump includes both pumping out liquid and supplying it under pressure. The fuel for the engine can be either gasoline mixture or diesel.

Design and principle of operation

The mechanism body is a cylindrical metal part. This module can be made from a sleeve from a diesel engine, as well as from a piece of pipeline fittings. You can also use a hydraulic cylinder body, if one is available.

The piston is made from any available material - wood, plastic or metal. Rubber rings are used to seal the piston. In appearance, this design resembles a regular pump for bicycle tires, only liquid is pumped into it.

Valves are an important part of a water pumping apparatus, since the efficiency of the unit depends on them. They are usually made of elastic and durable rubber.

Pump malfunctions

Misalignment. This is possible for two reasons - incorrect assembly and manufacturing defects. However, incorrect assembly is a fairly rare occurrence, because the case has ready-made mounting holes that are very difficult to miss. Another reason is uneven seating on the cylinder block (due to dirty, rusty or bent surfaces). And, unfortunately, manufacturing defects, especially in younger pumps, are not so rare. An alignment error causes the pulley to become misaligned, which in turn accelerates wear on the belt and bearings. In the most critical cases, the belt may break and the valves and pistons may collide. Sometimes misalignment is caused by the car being in an accident with a misalignment. Re-pump to a new one, especially if it has been used for a long time. When replacing the pump, the antifreeze is also replaced.

Principle of operation

The operating principle of the piston unit is based on the suction of liquid inside the cylinder. The movement of the piston pushes air out of the cavity and creates conditions for the movement of water. An inlet valve is located inside the housing. The output valve is located on the piston itself. To simplify the operation of the unit, a spring is installed between the modules, attracting the piston to the base of the cylinder body. The “motor” in this device is muscle power.

Let's watch the video, how the unit works, and what you need to know before starting:

The operating principle of the motor pump is based on the action of centrifugal force, which forms internal pressure in the cylinder cavity. The unit runs on an internal combustion engine. The fuel for the engine is gasoline. The gasoline-powered unit has a low power resource, but is characterized by quiet operation.

Types of fuel pumps

Current models are equipped with both mechanical and electrical fuel pumps. Mechanical pump

found in carburetor cars,
electric fuel
injection pump, where fuel enters the car engine under pressure.

The mechanical gasoline pump is located outside the gas tank, but the electric one, on the contrary, is located inside it. There are cars in everyday use that have 2 fuel pumps installed. The mechanical unit operates under low-frequency pressure because the carburetor and fuel pump are located close to each other.

How to make a piston pump

The design of a simple piston pump

Manufacturing of the body. For this, a piece of metal pipe with a girth of 10 cm and a length of up to one meter is suitable. So that the piston can move freely in the body of the pipe, its inner surface is sanded with sandpaper attached to a wooden stick.

Now you need to weld the mounts for the lever to the pipe. They can be made from angle steel.

In the body of the pipe we form a hole for the drain “spout”. It can be placed in any part of the body.

We close the end of the lower part of the pipe with a metal plate by welding.

Now it’s the turn for the upper plane of the cylinder pipe. No welding or reliable fastening is required here, because the tire will serve as protection against liquid spillage. The tire must have a hole for the rod in the form of a slot: this is necessary for the free movement of the rod.

The next stage of creating a water pump with your own hands is making a piston with holes for fastening the rod.

The rod can be formed from a metal rod with a girth of no more than a centimeter. The rod is fixed to the lever and is located in the middle of the piston.

Watch the video for detailed manufacturing steps:

The piston lever is made from a piece of pipe with a cross-section of 3 cm. For ergonomics, the lever is wrapped with electrical tape or rubber.

The intake valve must match the cylinder diameter. It is made of durable rubber or other “heavy” material. In order for the valve to return to its original state, it is fixed with a guide in the center.

Now all that remains is to install the main cylinder on the pipe. In order for the structure to have strength, the cylinders are fixed with supports: they are welded to a frame located on the ground.

The assembly of the structure looks like this:

1. The inlet valve stem fits into the cavity of the pump base;
2. A piston with a rod is placed in the cylinder;
3. A lever is attached to the rod;
4. The lever is fixed with brackets.

We make a pump and motor together

The motor pump resembles a design made of a cylindrical body with pipes. The body of the cylinder contains a screw whose function is to accelerate the fluid. Centrifugal force accelerates the water in a spiral, increasing the pressure, which pushes the working fluid out under pressure. The difference in pressure “pumps” a new portion of working fluid into the cylinder body.

Design of a bicycle motor and pump from Kama

We offer for consideration the design of a do-it-yourself motor pump from a bicycle motor and a pump from Kama.

The fixation of the motor in this design is a regular bicycle frame. A piece of metal pipe is attached to the frame bushing, then a fuel tank of a couple of liters and a motor are installed. An ordinary can of paint and varnish products can be used as a tank.

The motor requires some modification, which consists of installing pulleys instead of a clutch. It is also necessary to install a fan to cool the engine.

The pump module is made from spare parts for the Kama brand pump. The design diagram looks like this:

Pump module design

1. Screw;
2. Pump cover;
3. Wheel;
4. Padding material;
5. The body itself;
6. Bearing coating;
7. Screw;
8. Sleeve;
9. Shield;
10. Disk;
11. Washer;
12. Bearing;
13. Pulley;
14. Key;
15. Disk;
16. Roller;
17. Sleeve.

Next, the structure is fixed on the axis of a stroller for a child. The adjusting handle is installed on the bicycle steering wheel, fixed to the frame. The motor is started by jerking a cord made of polymer materials.

The engine speed is adjusted using the gas handle, and stopping is done using the toggle switch. The maximum power that the gasoline engine is capable of is 5,550 rpm.

Independent design of a motor pump requires certain technical knowledge, the ability to understand the structure of the engine and the principles of operation of the pump. Assembling the unit yourself will cost several times less than buying it at a construction market.

There will be no problems with the water piston pump: the design is easy to assemble yourself. Watering a small country garden is quite feasible with a piston pump. To provide water from a well, a motor pump is required. In areas without central water supply and electrical networks, the presence of a motor pump is an urgent necessity.

Design and operating principle

The main component of a gas pump is a pump that pumps water at high speed. There are two types of pumps most commonly used: diaphragm and centrifugal.

Models equipped with a diaphragm pump are in most cases called a gasoline pneumatic pump. They are capable of pumping liquids with impurities up to 3-5 millimeters in size. Thanks to the coordinated work of several membranes that push out water, sufficient pressure is generated in the membrane pump. Each membrane functions similarly to a piston in a cylinder. By alternately squeezing liquid into the nozzle, the membranes provide a continuous flow of high pressure.

Today, gasoline motor pumps with a centrifugal pump, where the movement is transmitted through a belt drive or directly when the pump impeller rotates, have gained considerable popularity.

Due to the peculiarities of its internal design, a centrifugal pump is capable of creating a low-pressure area on the suction pipe, which makes it possible to suck in liquid. The impeller creates centrifugal force, forming a high-pressure zone at the outlet. The result is a stream of water. It is important to note that the operating pressure at the outlet pipe must be consistent!

Many pumps are equipped with a check valve. Each gasoline motor pump is equipped with special mesh filters , where, based on the degree of water contamination, the cells can change in size.

The motor and pump housings are in most cases made of steel, which increases the overall protection of the device from possible damage. Also, many devices have a dismountable pump housing, which makes it possible to easily clean the screen and wheel from any stuck solid particles, stones and dirt.

All models of gasoline motor pumps are made of a reinforced frame , which guarantees greater protection and stability of the device during transportation.

Symptoms of malfunction

• Pump noise when the engine is running. Extraneous noise is caused by bearing wear. It is recommended to replace the cooling system pump after one or every time replacement. If maintenance intervals are not observed, the rolling elements, inner and outer rings will wear, causing noise and whistling. Quite often, the cause of accelerated wear is antifreeze, which gets into friction pairs due to leakage of oil or rubber seals.
• Antifreeze leak. Like the pump bearing, the oil seal and rubber bushing have a limited service life. Play due to bearing wear will result in much less sealant leakage.
• Misalignment with respect to gears, shafts (pump is misaligned). Uneven stress distribution causes accelerated wear not only of the bearing, but also of the seal. Incorrect assembly or manufacturing defects, when the pulley rotates misaligned, leads to accelerated wear of the loaded part of the belt. Such a malfunction, even with low mileage, can break the timing belt and break valves with pistons.
• Engine overheating. When the impeller vanes break, the pump's performance drops, resulting in less coolant flow through the small circulation circuit.

A decrease in performance is often noticeable after applying sealant to repair a radiator leak. The mixture clogs the cooling system passages and sticks to the pump impeller.

Unless grease has clogged the body coolant drain, leaking sealant will not cause water pump failure. However, it is necessary to disassemble the pump and flush the system.

Where are motor pumps used?

Modern motor pumps can easily be classified as universal devices, since they can be used in many areas of human activity, for example:

• When performing drainage work and pumping water;
• For water supply of a country house;
• When extinguishing a fire;
• For irrigating fields and watering gardens;
• For draining pits, streets, premises and reservoirs both under normal conditions and during construction.

Often in public utilities, gasoline motor pumps are used to pump dirty water. They are also used for draining sewer wells, basements, cellars, etc.

As for the construction area, here the device can be useful for preliminary drainage of a swampy area where work is planned. The Ministry of Emergency Situations constantly uses water pumps, not only during fires, but also in cases where there is an urgent need to pump out a large amount of water.

Good autonomy makes it possible to carry out work away from the power grid, which also increases safety, since electrical wires and water will not come into contact with each other.

Nuances when working

When using gasoline motor pumps, do not forget about safety precautions and features of working with equipment. Below are the most important recommendations from experienced users:

• A gasoline motor pump used for pumping dirty water, as a rule, makes a lot of noise, and therefore you should not turn it on at night, early in the morning or at other inconvenient times, so as not to disturb your neighbors;
• Make sure that the device does not operate dry! Otherwise, without liquid, the pump will overheat very quickly and simply break. You can avoid this kind of trouble if you first fill the pump with water ;

• The performance characteristics of the models are designed for pumping water with a temperature of about 20 degrees. In this case, the maximum threshold can reach 90 degrees, but in this case, hot water will not be pumped for quite a long time;
• Long-term operation of any engine is achieved through timely monitoring of the condition of the oil filter and oil level;

• You should not save on buying a filter system when watering your garden from a reservoir, that is, when the purity of the water remains in question, otherwise you will spend even more to repair the device. You can purchase a motor pump without filtration when you plan to draw water from a well or borehole, that is, when the water is absolutely clean;

• Before long-term storage, the fuel must be drained;
• Make sure that there are no air pockets in the inlet pipe;
• Make sure that there are no kinks in the hoses - this will increase their service life;
• You need to stop and start the device step by step and strictly according to the instructions!

And although a gasoline motor pump requires certain fuel costs, and during operation it produces significant noise, nevertheless, the unit is very popular both in ordinary household work and in professional activities. Each user, based on specific tasks, must choose the final choice and type of device for himself!