Rating of the best pumps for cars, the best pump manufacturers

The timing belt is noisy after replacement - what to do?

On cars with a liquid cooling system, including the VAZ 2107, one of the main elements responsible for maintaining the operating temperature of the engine is the pump. Thanks to this unit, the circulation of coolant is ensured. If problems arise or if the water pump fails, the normal operation of the power unit is disrupted, which can lead to serious consequences and expensive repairs.

The pump circulates coolant through the engine cooling system

Purpose

The operation of the pump is aimed at continuous circulation of coolant (coolant) through the engine cooling jacket. The antifreeze is heated under the influence of the rubbing elements of the power unit, and the necessary pressure in the system is created by a water pump. The liquid is directly cooled in the main radiator, after which the coolant again enters the cooling jacket. If circulation is interrupted for at least 5 minutes, the motor will overheat. That is why it is so important to monitor the proper operation of the node in question.

More about the VAZ 2107 radiator: https://bumper.guru/klassicheskie-modeli-vaz/sistema-ohdazhdeniya/radiator-vaz-2107.html

Pump design

On the VAZ 2107, as on many other passenger cars, the pump has almost the same design. The unit consists of a housing with a central shaft located inside, on which the impeller is fixed. The shaft is secured against axial displacement by means of a bearing, and the tightness of the structure is ensured by an oil seal that prevents coolant leakage. There is a hole in the pump cover through which the shaft comes out, where the pulley hub and then the pulley itself are attached to it. A belt is put on the latter, which on the “seven” rotates the generator and pump from the crankshaft. On modern cars, the pump rotates via a timing belt.

The main elements of the pump are the housing, shaft with bearing, impeller and oil seal

Where is

On classic Zhiguli models, the pump is located on the front of the power unit and is attached not to the block, but through a separate housing. By opening the hood, you can easily notice both the pump pulley and the assembly itself.

The pump is located in the front part of the engine and is part of the cooling system of the power unit: 1 - supply pipe to the cabin heater; 2 - expansion tank; 3 - radiator; 4 - pump; 5 — thermostat; 6 — manifold heating tube; 7 — return pipe from the cabin heater

Which pump is better

For the VAZ 2107, water pumps with catalog numbers 21073–1307010, 2107–1307011–75 and 2123–1307011–75 are suitable. The last two options have an enlarged impeller and a slightly reinforced structure. Initially, these pumps were produced for Niva. The slightly higher cost of such pumps is fully justified by the better performance.

On “Sevens” equipped with both injection and carburetor engines, the same water pumps are installed, and their repairs are carried out in the same way.

The old pump has an impeller made of cast iron, and the new one is made of plastic.
The product in question is produced today by many companies, but the most popular are:

• luzar;
• Hepu;
• TZA;
• Phoenix.

At the car market you can find pumps with impellers made of different materials: plastic, cast iron, steel. Products with plastic impellers, which are equipped with embossed and elongated blades, receive positive reviews. Elements made of cast iron are characterized by lower performance, and as for steel ones, they are susceptible to corrosion and are quite often fake.

The housing is replaced if it is damaged, and in other cases only the pumping part is changed

The pump can be purchased either complete with a housing or separately. If the housing is not damaged, then it is enough to replace the pumping part. If the design has serious flaws or is completely broken, then you cannot do without replacing the housing.

Video: which pump to install on the “classic”

How does a water pump work?

Cooling system liquid pump repair

The purpose of pumping equipment is to deliver liquid to the point of water collection. Regardless of the design features, the principle of operation of the water pump is the same. When the electric motor is turned on, a vacuum is created in the working chamber. Low pressure inside the housing promotes the suction of water, which moves to the outlet pipe. The outlet pressure has a force sufficient to overcome the hydraulic resistance of the pipeline.

Diagram of water movement in a vortex pump

The type of unit and the design of the working body determine the features of its operation.

Centrifugal pump

Centrifugal-type units are characterized by a combination of high performance and pressure. Optimal performance characteristics ensured their popularity among consumers. What does a centrifugal water pump consist of:

• body made of durable material - steel, brass, bronze, cast iron;
• a rotor rotated by an electric motor;
• impeller with blades (impeller);
• branch pipes – inlet and pressure.

Centrifugal pump device

The rotating blades of the impeller create centrifugal force inside the housing. The liquid is drawn in, pressed against the walls of the chamber, and then pushed out into the pipeline under pressure. The universal type of equipment is distinguished by a wide variety of models. The units are classified:

• by installation method - submersible, semi-submersible and surface;
• in the direction of the shaft - horizontal and vertical;
• by the number of impellers (stages) - single-stage, multi-stage.

Advantages of centrifugal type devices:

1. Operates at temperatures up to +350.
2. Durability and long service life.
3. High efficiency.
4. Affordable price.

For organizing water supply and irrigation, console-type models are recommended. They are designed for pumping liquids with impurities. Multi-stage installations will ensure high productivity and uninterrupted water supply. Cantilever structures require protection from external influences, so they are placed indoors.

Vortex pumps

Thanks to its design features, the equipment is capable of creating powerful pressure. How does a vortex type water pump work? When rotating, the impeller blades form a vortex of the pumped liquid. This property makes it possible to provide high pressure with small installation dimensions. Compact models are used for irrigating gardens and vegetable gardens. They are not sensitive to air bubbles entering the liquid, but quickly fail when mechanical impurities enter the water.

Vortex mechanism

Advantages of vortex units:

1. Compact size.
2. High pressure, installation pressure exceeds that of centrifugal models by 3-5 times.
3. The simplicity of the design facilitates maintenance and repair.
4. The equipment is capable of self-priming liquid.

Disadvantages include low efficiency (about 45%) and sensitivity to abrasive particles.

Vibration pumps

Vibrating-type units are used to organize irrigation and water supply of private farms and cottages from an individual source. The equipment is unpretentious in operation and can be used when pumping contaminated liquids. The operation of the device is associated with the influence of a magnetic field on a coil with a core. The metal core is connected to a flexible diaphragm which, when flexed, creates low pressure in the suction chamber. The liquid enters the housing, and when the core and diaphragm return to their initial position, it is pushed out through the outlet pipe.

Vibration units

Advantages of vibration units:

1. The ability to pump contaminated water, which is used when pumping wells and boreholes.
2. Affordable cost of equipment.
3. The absence of rubbing parts increases the service life.

Vibration pumps are not without their disadvantages:

1. Sensitivity to voltage changes.
2. Destructive effects of vibration on well walls.

The choice of pump should be approached responsibly, taking into account its reliability and consumer characteristics. The main criteria for choosing equipment: pressure, productivity, sensitivity to contamination and power consumption. The unit should be purchased taking into account the operating conditions and purpose, then it will last the maximum period.

How to check the pump on a VAZ 2107

Since there is a need to check the pump, there are problems in the cooling system, namely, overheating of the engine or obvious signs of a pump malfunction. It could be:

• increased noise coming from the pump when the engine is running;
• obvious leaks on the shaft under the pulley;
• antifreeze leakage through the housing gasket;
• increased play on the pump shaft;
• lack of antifreeze circulation and, as a result, engine overheating.

The fluid circulation may simply be insufficient, that is, the pressure in the cooling system is not normal. This can only happen in one case. The VAZ 2107 injector pump is designed for high performance, and if you install a conventional pump from a carburetor engine, its performance may not be enough and the engine will overheat.

Actually, diagnosing the condition of the pump is not difficult. Obviously, the pump requires replacement if there are gaps and fluid leaks. However, it is possible to check the pump's performance by eye. To do this, with the engine warmed up to operating temperature, you need to briefly clamp the upper hose going to the radiator. If, after releasing the hose, a pressure surge is felt, there is nothing wrong with the impeller and the fluid is circulating normally.

When to change your pump

A clear sign that the pump needs to be replaced are the following points.

1. In the warm season, there is frequent overheating of the power plant, although there is enough antifreeze in the expansion tank.
2. Leaks appearing at the pump connections. Failure can be detected by fogging of the case or the presence of wet spots of a characteristic composition.
3. Extraneous noise coming from the pump when the engine is running - it can be knocking, rustling or crackling.
4. In winter, the heater stops working even when the engine is normally warmed up.

You should also consider the service life of the part on a particular vehicle. For most cars, the operating time of the device ranges from 60,000 to 90,000 kilometers. In some cars, this gap can reach 120,000 km. The manufacturer recommends replacing the pump before its service life expires.

Pump repair

In some cases, the water pump can be repaired. It is recommended in situations where either wear of the bearings or the oil seal located inside the device occurs.

Repairing the pump will save you about 600–700 rubles, which in principle is not so little. The maintainability of the pump is determined by the condition of the impeller and shaft. If they are relatively new, then they can be restored.

A complete replacement of the pump on VAZ cars is only for the better. The new unit is inexpensive, and after replacement the car’s engine will begin to function fully.

Which pump manufacturer should I choose?

The question itself is in the topic of the post - Which pump manufacturer should I choose?

As far as I know, there may be a shaft of different lengths, which will affect the performance and the impeller is made of different materials. I would be grateful for a reasoned answer from personal experience. You can even leave links to entries in your blog.

Interesting fact: I wrote earlier that my pump was leaking and rustling a little. This will be the third pump on this car, the factory one was changed in 2006 and now at the beginning of 2022 I will change it again. I think this was a good indicator for a spare part; they probably don’t make them like this anymore.

To those who did not leave the request unattended - a low bow!

Tools

For repair you will need:

• Keys at 10, 13, 17;
• metal brush;
• sealant;
• container for draining coolant.

As for which pump to choose, there are 3 proven brands:

1. Luzar (item 2101-1307011);
2. Pekar;
3. TZA.

At the same time, TZA is preferable, but they are rarely found on sale. They also advise choosing pumps with a metal impeller, explaining that plastic ones can fall apart or dissolve in low-quality antifreeze, but I have never seen this.

Signs of a pump malfunction

Sooner or later, problems arise with the pump and the unit fails. This may be due to both the high mileage of the car and the installation of a low-quality product. Therefore, it is worth considering what malfunctions may occur with the pump and what to do in this or that case.

Oil seal leak

It is quite easy to detect coolant leakage through the oil seal: a puddle usually appears under the car. If the sealing element is damaged, for example, as a result of wear, antifreeze will get to the pump bearing, as a result of which the lubricant will be washed out of the device, and the part itself will soon collapse. To prevent this from happening, it is necessary to periodically inspect the car and eliminate possible problems.

Appearance of noise

If extraneous noise is heard from the pump area while the engine is running, this indicates an imminent breakdown of the unit. The most likely cause of noise is failure of the bearings or weak fastening of the impeller. In any case, the part needs to be dismantled, subsequently damaged, repaired or replaced.

Video: how the pump on a VAZ makes noise

Decreased performance

Whatever antifreeze is used in the cooling system, it is a chemical substance. Over time, erosion occurs in the pump housing or impeller, which can lead to a decrease in the flow of pumped liquid. As a result, the motor may overheat with all the ensuing consequences. Therefore, if the coolant temperature sensor on the instrument panel begins to exceed +90˚С (operating temperature), it is worth thinking about a possible replacement of the pump or, at least, a revision of this unit.

Increased vibration

If increased vibration comes from the pump area, first of all you need to inspect the pump housing in the bearing area: sometimes cracks may appear on it. It would also be useful to check the correct installation of the generator belt, pump pulley and fan. If faulty parts are found, replace them.

Dirty coolant

If the coolant has not been changed for a long time, problems may arise with the pump. It is not difficult to determine if the system is dirty: the color of the liquid will be brownish instead of red, blue or green. If the antifreeze turns black, most likely oil has entered the cooling system.

How to check the pump's performance

You can check the functioning of the pump yourself. To do this you will need:

1. Warm up the engine to operating temperature and clamp the upper pipe leading to the radiator. If you feel a surge in pressure when you release it, then the pump is working normally.
2. There is a drain hole on the pump so you should pay attention to it. If the oil seal does not cope with its functions, then antifreeze may protrude from this hole.
3. While the engine is running, you need to listen to extraneous sounds. If a hum is heard from the pump, then most likely the bearing has become unusable. You can check it with the engine turned off by shaking the pump pulley. If play is felt, it means the bearing needs to be replaced.

Work on checking the pump with the engine running should be carried out carefully, not forgetting about the rotating fan and high coolant temperature.

There are several main symptoms:

1. In 9 out of 10 cases, the failure of the water pump is associated with leaks in the cooling system. If the seal is damaged, antifreeze and antifreeze (water) will flow to the device bearing.

As a result, after some time all the lubricant is washed out of the device, and the mechanism itself inevitably collapses.

To prevent such situations, it is necessary to check the tightness of the hoses and the serviceability of the static seal from time to time.

As for the main malfunctions, these include:

• The appearance of a leak through the gasket.
• Leak through the fiber (oil seal).
• Bearing wear.

2. Extraneous sounds. Listen to the operation of the node. If the water pump makes a lot of noise, then this is one of the signs of an imminent breakdown.

As a rule, the appearance of a hum is a clear indication of bearing failure or loosening of the impeller.

Often the VAZ 2107 pump bearing fails when coolant gets on it. As for impeller malfunctions, the root cause of the problems is often incorrect installation of the pump.

3. The appearance of erosion of the pump chamber or its impeller. Such problems can lead to a decrease in coolant flow, further overheating and failure of the device.

4. Increased vibration can be diagnosed by inspection. Pay special attention to the pump housing near the bearings (if there are cracks on it, then problems are obvious).

After this, check whether the belt, pump pulley, and fan assembly are installed correctly. If any defective parts are found, replace them.

5. Contaminated system. If you have not changed the coolant for a long time, then there is a high probability of problems with the pump. Contamination can be determined by the color of the antifreeze.

For example, if it has acquired a brown tint, this indicates oxidation. Blackening is a clear indication that lubricant has entered the system.

Turbo pump?! I haven’t heard of it)))) Waiting for your comments! Comparative test of water pumps for classics!

I ordered the pump to the store (On sale) Luzar-LWP 01014 TURBO, mine is still working, but I’m thinking of replacing it with a turbo in the summer, maybe someone has installed such a pump, write in the comments, the manufacturer says: What are the advantages of LUZAR water pumps?
1) Double row ball roller bearing.

LUZAR pumps are equipped with the best and most suitable bearing from all possible and available options. The installed bearing has a smaller contact surface area and can therefore operate at high speeds. This guarantees maximum and long-term use. It happens that on some pumps, due to the small height of the housing, ball roller bearings cannot be used, therefore, in such cases, special double-row angular contact ball bearings are used.

2) Metal-ceramic sealing element.

In order to strengthen the very movable “body-shaft” connection, a double mechanical seal is used, where the movable and stationary rings are made of ceramic. Thanks to the special properties of the material used, friction between the rings is minimized and there is almost no air gap. Therefore, all guarantees are given for the highest possible tightness and long service life.

3) Installation of the oil seal and additional sealing of connections.

Based on long-term and numerous experiments conducted by the LUZAR Company (more than five thousand studies), it was found that almost twenty percent of bearing failures occur because coolant enters through the oil seal, where the oil seal-shaft and oil seal-housing interfaces are located. .

This trouble occurs due to very small pores, examined under a microscope, in the casting of the water pump housing and the “loosening” of the sealing element during operation. A solution was found - the use of adhesive sealing for the sealing element of LUZAR pumps, due to which the service life was extended for a significant time.

4) One hundred percent ultrasonic inspection of the housing.

Microscopic defects in the smelting of the pump casing can cause the pump to become unusable and lose its required performance. Therefore, we carry out special checks and monitor the quality of casting of pump housings, guaranteeing excellent connection of parts.

5) One hundred percent control of the impeller “overhang”.

As many people know, the closer the impeller is to the counterpart of the water pump, the higher the performance of the pump. Absolutely all LUZAR water pumps have a mandatory gap of 0.9 to 1.3 mm, which is controlled during manufacture.

Note: There are frequent cases when deposits occur on the body of the pump response. Due to such deposits, it may not be possible to install the pump. If this happens, then you need to: carefully clean off unwanted deposits or use a special additional gasket before installing the pump.

6) Installation hardware.

The water pump is installed in a very hostile environment that causes corrosion. In this case, the pump fasteners become covered with salt deposits and become unusable. Therefore, in order to avoid such unpleasant situations, all LUZAR water pumps come complete with special additional installation fasteners, which must be used when replacing the pump.

7) The warranty is given for two years or until you drive 125 thousand kilometers.

Source

Features of the cooling system of classic Lada

The cooling system of the VAZ 2107 is actually no different from other engines built on the basis of the Fiat 124 engine. It is not our plan to describe its operation and design, however, the pump bears the main load and is responsible for the circulation of the coolant. Despite the simplicity of the water pump design, it is subject to a whole bunch of requirements, and failure to comply with at least one of them can cause an antifreeze leak or disruption of its circulation. As a result, the motor will overheat with all the ensuing consequences.

What to look for when buying a water pump

The water pump (pump) is an important element of the cooling system, necessary for the circulation of antifreeze within the system. Pump malfunctions can lead to boiling of the motor. To avoid sad consequences, you should approach the choice of components responsibly. Let's consider several criteria by which it is easy to determine a high-quality water pump.

Impeller

The impeller is an actuator that pumps antifreeze. Particular attention should be paid to the material from which this element is made.

Plastic impeller. Most modern components are equipped with a plastic impeller. It has less weight compared to metal counterparts, and, accordingly, has lower inertia. This allows the engine to spend less energy spinning the impeller. Thin blades deliver liquid efficiently. Often this design is closed.

Purpose of the VAZ 2107 pump

A water pump is a device whose main mechanisms are a shaft and an impeller. The pump shaft is driven by transmitting torque from the engine crankshaft. Torque is transmitted through a pulley and a belt drive, which connects components such as the crankshaft and the generator.

On VAZ 2107 cars of the carburetor type in the first years of production, the pump pulley is also used to attach the forced cooling fan. Modern VAZ 2107 models of injection and carburetor types are equipped with electric cooling fans, so there is no need to drive the fan.

The pump ensures the circulation of coolant in constant mode after starting the car engine. If the pump does not function, the cooling cycle will be disrupted, which will lead to excessive overheating of the motor and failure. It is very important to replace the pump in a timely manner, otherwise the consequences will be fatal.

Water pump problems

The pump has a fairly simple design, so identifying faults is not difficult. Malfunctions may be associated with failure of the bearings, and there may also be a leak of coolant due to wear of the sealing seals. Such problems have various types of consequences:

1. If there is a coolant leak, the antifreeze level will decrease and the engine will overheat. If coolant is leaking, you can compensate for its deficiency by adding antifreeze or water. If a fluid leak occurs, it is important to promptly identify this type of failure.
2. When the bearings jam, the consequences of this phenomenon cause the belt to break. In this case, continuing to move is strictly contraindicated.

Replacing the pump on a VAZ 2107 car, injector or carburetor, if the above reasons occur, is mandatory. At home, you can repair the VAZ 2107 pump yourself. How to do this is shown in the video below.

However, experts do not recommend resorting to repairing the product, since it is much easier and more efficient to replace the pump than to buy a repair kit and carry out repair work. It is especially important to pay attention to the integrity of the main pump components.

What is needed for replacement

To replace the pump, you will need to use the necessary tools. These tools include:

1. Keys for 8,10,13 and 17.
2. A container to drain antifreeze from the system.
3. Screwdriver.

The first step is to drain the coolant from the system, and only after that can you begin to replace the device. The process of replacing a water pump does not present any difficulties, but when performing work it is important to follow a clear sequence. We will look further at how the fluid is drained and the pump is replaced on a VAZ-2107.

How to remove a pump from a car: step-by-step instructions

To replace the water pump on a VAZ 2107, you need to drain the coolant. This is done by removing the cap from the radiator, as well as sequentially unscrewing the plug on the radiator and cylinder block. After draining the antifreeze, you can begin work on replacing the water pump. Step-by-step instructions for replacing the pump on a VAZ 2107 car:

1. When loosening the nut securing the generator housing, remove the belt.
2. Using a key set to “13”, you need to unscrew the bolted connections that secure the pump pulley. After unscrewing the bolts, it should be dismantled.
3. Unscrew the fastenings of the coolant supply pipes and then remove them.
4. Carry out the process of unscrewing the bolted connections by which the pump is fixed, and then dismantle it.
5. After the pump is dismantled, it is necessary to replace the sealing gasket. The old gasket must be changed.
6. Unscrew the 4 fastening nuts of the pump, and then disassemble it.
7. Install the new pump along with the O-rings. O-rings and gaskets cannot be reused.
8. Now you can assemble all the parts in the reverse order of removal.

From the instructions described above, it is clear that the process of replacing the pump is not particularly difficult. Before resorting to such actions, you should find out how to check the water pump. Checking the serviceability of the water pump involves performing the following procedures:

1. Antifreeze leak detection. If the water pump fails, a coolant leak will inevitably occur. The location of the water pump housing should be inspected.
2. The occurrence of extraneous noise. If the device makes strange noises, then this is the reason that it will soon need to be replaced.
3. Formation of excessive vibration. Excessive vibration indicates bearing failure.
4. System contamination. If you do not replace the antifreeze for a long time, this will certainly cause the pump to fail.

The pump is an important mechanism in every car. The serviceability and efficiency of this unit affects the quality of engine cooling, as well as its integrity.