✅ Replacing the Niva Chevrolet pump

Purpose of a car pump

The main function of the water pump is to circulate antifreeze in the engine cooling jacket. The antifreeze cooled in the radiator flows through the pipe to the pump impeller, which, rotating, pushes the liquid further into the engine cooling circuit. The heated coolant (coolant) from the engine jacket returns in a reverse circle to the radiator, where it is cooled under the action of the fan and goes back to the pump. In this way, coolant circulation is organized in the engine cooling circuit. The rotation of the pump impeller occurs due to the crankshaft through a belt drive.

The Chevrolet Niva pump is not fundamentally different from other car pumps

If the pump fails, the removal of heated fluid from the engine stops and overheating occurs. Therefore, if a part fails completely, it is important to turn off the engine in time, otherwise the motor will quickly fail due to overheating. Rebuilding the engine will cost much more than the cost of replacing the pump.

Troubleshooting

The main reason for water pump failure is severe wear of the bearings. Oil seal leakage is also a consequence of worn bearings. Cases when the oil seal began to leak coolant on its own are very rare.

The symptoms of these malfunctions are as follows.

A suspicious noise is heard in the belt drive area, the intensity of which depends on the degree of wear of the bearings. In the early stages it manifests itself in the form of a hum, and then turns into knocking and grinding. The generator shaft can also make similar sounds - therefore, in this case, additional checking is required.
There is play on the water pump shaft. You can determine it by shaking the shaft with your hand.
The belt and the area around the pulley are splashed with antifreeze. This also needs to be further checked - a similar effect is observed when the crankshaft front main oil seal loses its tightness. In the latter case, the front of the engine becomes covered with a layer of oil and dirt.
With a high degree of wear, the pump shaft moves to the side along with the pulley. As a result, the impeller breaks the housing, the shaft jams and breaks into two parts, and the generator belt jumps off.

If pump problems are not detected in time and the consequences described in paragraph 4 occur, the engine instantly overheats and the coolant quickly leaves the system. In such a case, immediately turn off the engine.

Diagnosing a faulty water pump is quite simple. It is necessary to open the hood and inspect the space around the pulley. If traces of liquid are found, you need to make sure that it is antifreeze and not oil. Then, in order to detect play, you should rock the pump pulley by hand. It should be taken into account that play can occur without coolant leakage through the oil seal. With a small (1–2 mm) play you can drive from 1 to 3 thousand km. After this, repair or replacement of the pump is necessary.

Video: fault diagnosis and pump repair

Replacing the Chevrolet Niva water pump

Before starting repair work, it is important to conduct a thorough analysis of the causes of the breakdown.

Diagnosis of pump faults

Unfortunately, the life of the Chevrolet Niva's water pump is less than that of other cars. There are often cases when signs of breakdown appear already after a mileage of 10 thousand km. But as a rule, the pump does not fail suddenly. This gives the car owner time to fix the problem.

decreasing coolant level in the expansion tank;
extraneous noise in the engine compartment;
coolant leak under the engine;
engine overheating;
a situation arises with a hot upper pipe and a cold lower one;
coolant smell;
pump pulley play.

When diagnosing a pump, it is important to correctly localize the problem area so as not to go down the wrong path. For example, antifreeze may leak from cracked pipes or a thermostat. For the same reason, a characteristic odor appears.

Pump location

Due to the ambiguity of signs of a pump malfunction, a final conclusion about its repairability is possible only after a thorough visual inspection of the device. The pump is installed on the right side of the engine, it is attached directly to the cylinder block at the bottom. Unfortunately, visual inspection from above is difficult due to the clutter of cooling pipes and the thermostat located above the pump. Therefore, to facilitate access to the pump, these elements will have to be dismantled.

For clarity, a photo is shown with the new pump already installed.

Preparing tools

To replace the pump you will need the following tools and materials:

antifreeze;
sealant;
spanner set to “13”;
socket wrench set to “13”;
Phillips screwdriver.

To work, you will need two types of “13” keys and a Phillips screwdriver

Choosing a new pump

The range of commercially available pumps is very wide. Well-known pump manufacturers include Hepu (Germany), NK (Holland), Airtex (Spain), Graf (Italy), SKF (Germany - Spain). Among the manufacturers, it is worth highlighting Hepu and Graf. Pumps of these brands use large impellers made of cast iron. Such impellers last much longer than steel and plastic ones. The TZA 2123 pump for the Chevrolet Niva, with reinforced bearings and oil seal, has proven itself worthy. This brand is a leader in the budget segment. In fact, this is the same pump as on the VAZ Kopeyka. Unfortunately, there are many fakes of this pump on the market.

DIY pump replacement

It usually takes about two hours to dismantle the old pump and install the new one. The workplace does not require a lift or pit. All operations are performed from above in the following sequence:

Remove the left air supply hose to the air filter.

The clamp securing the pipe is loosened with a Phillips screwdriver.

The spacer mounting bolt is unscrewed with a “10” wrench

The clamp screw is unscrewed

Removable air duct makes work area easier to access

After loosening the pump pipe clamp, the thermostat can be easily removed

Tension of the generator belt roller is done with a key set to “13”

The belt is removed after the tension on the roller is released.

Using a screwdriver, the pulley is blocked from turning.

The nuts are unscrewed with a wrench to “13”

Remove the pump cover complete with impeller

Wear of this gasket causes coolant leakage

When replacing the pump on cars equipped with air conditioning, additional difficulties arise. This is due to the fact that the compressor bracket is attached to the pump stud. This prevents the pump from being removed. Most people take the long route in this case and remove the compressor. But it is much easier to unscrew the stud using a locknut. And during assembly, replace it with a suitable bolt.

Video: replacing the pump on a Chevrolet Niva with air conditioning

What pumps are installed on carburetor and injection Nivas

Although the good old Nivas are in many ways similar to the new fuel-injected cars, there are differences, including in the water pumps. The part is produced for different modifications of the car in question. For example, pump 21230–1307011–82 can be installed on all Nivas, but in some cases a spare part for 2107, which has a wider impeller, can be used.

When buying a pump, you need to be careful and make sure that the housing fits the impeller. Otherwise, installation difficulties will arise. To avoid mistakes, you can purchase a complete pump, i.e. cover and housing.

Although the classic pump is suitable for the injection Niva, the part may simply not cope with the high temperature and will need to be replaced sooner. The following types of parts exist:

a standard pump with a plastic impeller, the blades of which are located lower and have an elongated shape;
a new type pump, also equipped with a plastic impeller with longer blades;
HEPU water pump, which has a cast iron impeller.

The last option is considered the most reliable, since the impeller, made of plastic, simply melts and deforms at high temperatures, as a result of which the element can break off the axis and the pump jams. The advantage of spare parts with a plastic impeller is their reasonable price and availability.

The HEPU pump is considered the most reliable option for Niva cars, since the impeller is made of cast iron

Pump repair

Basically, pump failure occurs due to wear of the bearings and seal. These parts are difficult to find in stores, so most often the old pump is simply replaced with a new one. But in some cases repairs are necessary:

leaking from the pump. A leak occurs either due to strong or, conversely, weak tightening of the mounting bolts, or due to wear of the gasket. In this case, the gasket must be replaced;
pump play. Occurs due to weakening of the mounting bolts. It can be easily determined by shaking the pump pulley with your hand. If after tightening the bolts the play does not disappear, then the reason is in the bearings on the shaft.

It is important to remember that pump wear is also affected by the tension of the accessory drive belt.

Despite the fact that the process of replacing a pump seems simple, you should exercise extreme care and caution when working. Having completed the repair, you should once again go through the instructions. Make sure fasteners are tight. Before going out on the road in various modes, test the operation of the water pump. Only after making sure that the car is functioning properly should you begin its daily use.

Niva Chevrolet which pump is better: what to install

For any SUV, the engine cooling system is very important, especially if it has to go off-road. In this case, its engine will operate in extreme mode, since there is no natural air flow to the radiator and motor, and the fan itself cannot cope with such a task.

Factory pumps on Chevrolet Niva

The factory Niva Chevrolet pump has a short service life

Today, many Niva Chevrolet owners notice a situation where factory pumps begin to leak and fail after a short period of time. This usually happens after a short distance (on average 10,000 km).

In this case, even minor repair work does not help to cope with the situation, and it usually ends with the pump having to be completely replaced.

Review of manufacturers (which one is better to choose)

The “originality” of the Pekar pump can be checked through the manufacturer’s official website

But few motorists today know which pump is recommended to be installed on the Niva. Some hobbyists conduct independent tests of these nodes, and some seek help on the Internet or from friends who have also encountered this problem.

Most car enthusiasts prefer spare parts from abroad. Below is a list of the most popular manufacturers:

Airtex (Spain).
SKF (Germany-Spain).
Hepu (Germany). Pump manufacturer Hepu
Graf (Italy).

All these companies are engaged in the production of pumps for cooling systems. Such spare parts are distinguished by their performance, since they all have large impellers made of cast iron, which guarantees good pumping of liquid in the system and the durability of the pump, since its main parts are made not of metal, but of cast iron, and therefore they are less susceptible to corrosion.

Pumps with metal impeller manufactured by Hepu and Tai

Pumps from the Graf company are especially popular. They differ from the others in their large impeller, its correct offset, and long service life. If the unit is installed correctly, it can last 4-5 years with proper use. Such a resource for pumps is considered normal.

Experts also note that in 2021, the pump from , which can also be installed on a Chevrolet Niva, has performed well. Its special feature is reinforced bearings.

The disadvantage is that the site has a lot of fakes. At first glance, such a part is difficult to distinguish from the original, since the Chinese have learned to bypass all methods of protecting the original product.

One of the differences between the original is that the kit comes with a cork gasket, while the fake one is made of paper.

Choosing a cheap pump

The fact that the pump has failed can be determined by the characteristic sound that appears when the engine starts. When replacing the pump on your own, you should remember that a similar unit from a “penny” will fit on a Chevrolet Niva, but it will no longer fit on a regular Niva.

Design

Classic centrifugal pump of console type. The working shaft, mounted on bearings in an aluminum alloy housing, has a flange on one side for attaching the drive pulley. On the other side, an impeller with curved blades is rigidly fixed to the shaft. Single-row ball bearings, non-standardized, the inner race is the shaft itself, in which the ball raceways are made. The outer race of the bearings is common, pressed into the housing with an interference fit and is additionally secured with a screw. On the outside, the bearing is protected by a conventional cuff; on the impeller side, an oil seal of a complex design is installed, in a steel cage, with two protective rings. The bearings are lubricated at the factory; replenishment of lubricant is not provided for by the design.

Why do you need a pump in a car?

The water pump of the internal combustion engine circulates antifreeze in the cooling circuit. Thanks to it, the heated liquid from the cylinder block enters the radiator, where it releases heat to the environment.

The Chevrolet Niva pump has a simple centrifugal design: the flow of antifreeze is directed by a rotating impeller, which is driven by a timing belt.

In the event of a malfunction, the liquid stops circulating and the thermal regime of the motor is disrupted. This leads to boiling of antifreeze and, if the engine is not turned off, to breakage of the low-melting bearing liners. In this case, major repairs or replacement of the unit will be required.

Signs of breakdown

Most often, the seal or bearing of the unit breaks. As a result, the pump begins to leak, which can lead to loss of antifreeze or engine seizure. The impeller may also break or break. You can understand that the pump needs replacement by the following signs:

the characteristic smell of antifreeze vapor in the cabin;
extraneous noise when the engine is running;
the appearance of antifreeze drops under the car;
engine overheating;
drop in coolant level in the expansion tank.

Selection of spare parts – which company is better?

Buying a cheap, low-quality product can cause serious damage to the power unit. Defective or counterfeit parts may leak almost immediately after installation.

It is also possible that the pump may jam, accompanied by a broken timing belt and “meeting” of the valves with the pistons. Then the cost of a tow truck will be added to the expensive repairs.

Therefore, it is better to buy a water pump only from a trusted manufacturer -
HEPU , Metelli , Dolz , Valeo . From domestic products, TZA or Phenox .
To avoid buying a fake, use the services of a trusted seller or online store. Consultants will tell you which pump is suitable for your car and help you choose a high-quality spare part that matches your repair budget.

How to change it yourself?

If you decide to do the work yourself, you will need a new pump for the Niva and a standard set of tools.

Required materials and tools

Chevrolet Niva is easy to maintain, so replacing the pump yourself will not take much time. You will need:

new pump with gasket;
antifreeze for topping up;
a screwdriver for removing clamps from the cooling system pipes;
knife for cleaning the pump housing;
socket or socket wrenches 13 or 17;
container for draining antifreeze.

It is necessary to place the car on a level surface, turn off the engine and apply the handbrake.

Important: you cannot change the pump on a Shnivy if the engine is warmed up to operating temperature - you may get burns. To speed up cooling and begin repairs earlier, open the hood.

Work progress

Before you begin replacing the water pump on a Niva with air conditioning, you need to drain the excess coolant. If it has already leaked out (which usually happens when the pump breaks down), you can start working right away.

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Replacing a Chevrolet Niva pump, step-by-step instructions (photos and videos).

Good afternoon, dear readers. The topic of today's article is replacing the Niva Chevrolet pump. Traditionally for our site, the article consists of detailed step-by-step photo and video instructions.

A nice bonus will be a review of pumps from various manufacturers.

To complete the work of replacing the pump we will need:

- antifreeze or antifreeze similar to the one poured in (full capacity is 10 liters, see how much you need)

— sealant (where without it?)

— key for 13 (favorite number on AvtoVAZ?)

— straight hands (we’ll work with them!)

- screwdriver (for removing clamps)

The work can be done anywhere, i.e. no garage or pit required.

As a rule, if the pump malfunctions, the antifreeze runs out, so I don’t describe how to drain it; if it hasn’t drained, drain the remainder (to buy less).

Sequence of actions for replacing a Chevrolet Niva pump:

— Remove the corrugation from the throttle to the mass air flow sensor

— Unscrew all pipes suitable for the thermostat and remove it

— For convenience, unscrew the 3 nuts securing the cooling fan and push it towards the radiator.

— Remove the generator belt — Remove the pump pulley by unscrewing the 3 nuts by 13 (no need to touch the belt tensioners) — Unscrew the 4 nuts securing the pump and one stud (this makes it easier to remove) — Pull the pump out towards the removed stud

— Using a screwdriver or knife, remove all remnants of the old gasket.

— We coat the block with sealant and install the gasket.

— We coat the pump with sealant and install it in place.

Reassemble in the reverse order: Reinstall the pump pulley
Tension the generator belt
We install the thermostat, coating the pipes with sealant
Screw on the electric fan
Filling with antifreeze
We install an air corrugation

We are happy with the money we just saved...

Here is a video instruction on how to replace the pump, you don’t need to disassemble anything unnecessary, and everything is very convenient:

Review of pumps from different manufacturers.

It so happened that cars made in Tolyatti became the main cars in the Russian Federation. And because of their popularity, we have the opportunity to choose spare parts from different manufacturers.

Practice has shown that these pumps last the longest (TZA - original VAZ):

Reasonable compromise (SOATE or fenox):

You definitely shouldn’t buy pumps (Pekar), but, unfortunately, these are the ones that are mainly sold in stores, and they look like this:

Pekarovsk pumps have not been running for over a year! Buy them only as a last resort!

That's all for today, I hope this article was helpful! If you have any questions about replacing the pump on a Chevrolet Niva, ask them in the comments.

Pump for Niva and Niva Chevrolet. Manufacturer's choice.

The article about pumps was written already in 2014 and required adaptation to “recent history.” So - pump to the field. It would be more correct to say pump cover, but since such a name has taken root among the people, so be it. The geometry of the pump for the Niva and Shniva is exactly the same. But for some reason the plant stubbornly positions them as different. On the pump body there is generally a marking 2107-***, and the hole behind it is simply closed with a plug.

Problem

Two issues on the agenda. This is the quality of the product and the re-upholstery of drive belts by the people and Papuans. The court supplier of AvtoVAZ is the TZA plant (Togliatti Automotive Components Plant), which makes truly high-quality domestic products. But the number of fakes is simply off the charts. The Chinese have long since bypassed packaging, holograms and SMS codes on the box. Now the most important protection against counterfeit products is a reliable supplier who works directly with the factory. With the issue of re-tensioning the belts, the picture is sad. In 70% of destroyed pumps: either the belt was too tight or was of poor quality.

Pump for the field, manufacturer's choice

This spare part is produced by a fairly large number of manufacturers. Hepu, SKF - Germany, NK - Holland, Airtex, Dolz - Spain, Graf, Metelli - Italy, TZA - Russia. There are also several “packers” whose boxes contain other people’s pumps, but we don’t take them into our inventory. The selection of competitors is quite simple; the pump must have a large impeller

Whether it's plastic or metal doesn't really matter. Today the preferences are as follows: two pumps from the TZA plant and a Metelli pump (Fiat conveyor supplier)

For a long time, Hepu water pumps had a very good reputation, but apparently cheaper production and globalization had an effect. The service life of products has dropped greatly and for a long time the company name has not been found on body castings. This means that this is all done “outside”. SKF has very good quality, but in terms of price-quality ratio, the pump is very much behind the favorites. The Spanish Dolz are good quality, but unfortunately the pump has a small impeller. However, it can be installed on lightly loaded and not forced engines; no overheating was noticed.

Pump for the field, manufacturer TZA

Spare parts from this manufacturer are of very good quality. The only problem is with the heads of the plant “managers” who sell products and set prices. Within a few months, the plant's selling price for pumps increased by 30%. And as soon as the price exceeded foreign competitors, the demand for these products fell again. Idiocy, I can’t think of another word. With such ingenious marketing, no enemies are needed, everything will be ruined with your own hands and head. Let's get back to technology.

Niva pump, Metelli

I kept this pump in the assortment, primarily “for length of service.” The Metelli concern has always been a conveyor supplier to Fiat, and this means something. The plant that produces the pumps has been producing this product for several decades and has reviews of at least “B” according to the school report card. If we move on to the technical side, then the trump card of this pump is the impeller. Large and “cast iron”. This fact brings ecstasy to the category of nivovods who believe that the plastic impeller will crack, burst and fall apart when exposed to hot antifreeze or antifreeze.

Once again I draw attention to the point of compatibility. Any of the presented pumps can be installed on a classic, Niva or Chevrolet Niva

The only difference is the pulleys and, as a result, the belts.

Replacing a Chevrolet Niva pump

The hydraulic pump, which ensures forced circulation of coolant in the car in the event of a breakdown, is practically irreparable and can be replaced as a single unit. When a Chevrolet Niva pump fails, it is not able to provide normal heat exchange, as a result of which the engine begins to heat up. There are a number of other symptoms that can be used to diagnose pump replacement.

Liquid leakage near the pump pulley.
Extraneous noise when the engine is running.
Pump pulley play.
No circulation (cold lower radiator hose)

Preparatory stage

Like any work related to car repair, replacing a Chevrolet Niva pump should begin with preparing the necessary tools, fixtures and consumables. For repair you will need:

keys for 13 and 10;
crosshead screwdriver;
sealant;
coolant.

The preparatory stage does not end here. The fact is that the pipe system and thermostat will not allow normal access to the pump, so they will first have to be dismantled.

First, the air duct is removed, disconnected from the throttle assembly and from the air filter housing.

Having opened access to the thermostat, you need to remove all the pipes from it; you can read how to do this here . If the pump replacement was not caused by a fluid leak, then most likely the coolant will begin to pour out when the pipes are disconnected. In this case, you should drain it in advance by any available method. After removing the thermostat, everything is ready to replace the hydraulic pump.

Removing the pump

To remove the accessory drive belt, you must loosen the tensioner. To do this, unscrew the three bolts on the tension bar with a 13 key, then use a 10 key to adjust the tensioner itself. After removing the belt, you can begin removing the pulley. It is attached with three bots. It is convenient to keep the pulley from turning by inserting a screwdriver between one bolt and the pulley casting.

Using a 13mm wrench, unscrew the nuts securing the pump cover, after which it is removed from the block along with the shaft and impeller.

This is the part of the pump that needs to be replaced. Traces of sealant or parts of the old gasket may remain on the interface between the cover and the block. They should definitely be removed.

Replacing the Chevrolet Niva pump. — logbook Chevrolet Niva on DRIVE2

A new oil seal is installed in the cleaned area. Replacing a Niva Chevrolet pump repair allows you to restore the tightness of the pump. To make work easier, you can lubricate the oil seal with antifreeze. Replacing pump bearings Replacing bearings will require a special vice for pressing out, and the work itself can take a long time.

Therefore, the shaft and bearings are usually replaced. This is done as follows.

The impeller is removed from the pump. The shaft is removed along with the bearings.

Replacing the Chevrolet Niva water pump

Niva Chevrolet pump repair A new shaft is installed in the pump housing. This procedure is considered a lightweight option for replacing bearings, however, due to the cost of the shaft itself, it may not always be profitable. Pressing out bearings can take a very long time. Many car owners recommend replacing the oil seal and impeller at the same time as the shaft.

In this case, the pump will last longer. First, remove the cover and try to disassemble it, remove the shaft, compress the impeller and pulley hub, remove the bearing... and then evaluate the possibility of replacing it. In addition to the bearing, you also need an oil seal. There is no need to remove the radiator, just drain the antifreeze. After installing the cover in place, don’t forget to buy a gasket!

It is possible that the impeller may get caught in the pump body or even the pump repair may get into it.

The gap between the blades and the body should be 0.9-1.3 mm. We unscrew the four fastening nuts and remove the water pump from its regular place. Before installing a new pump, you will need to thoroughly clean the surface of any remaining old sealant and gasket.

Once you place both pumps next to each other, the old and the new, the differences are immediately noticeable; just take a closer look at the impeller. You can install the new pump in place. While the Niva Chevrolet pump repair is being assembled, the sealant will have time to harden.

We put the water pump pulley in place, then the plug on the engine cylinder head and put the car radiator back. At the same time I changed the belt. When all the elements are in place, Niva Chevrolet antifreeze pump repair. I don’t want to refill old cloudy antifreeze.

Instead, I thoroughly flushed the systems and filled them with high-quality antifreeze.

Instructions for replacing the pump on a Chevrolet Niva, tips for diagnostics and selection of spare parts

It's high time, because antifreeze has better characteristics than antifreeze. It is more convenient to fill in coolant when one of the two thin hoses of the cooling system is disconnected from the throttle assembly.

We fill it so that antifreeze begins to flow from the hose, after which we insert the hose into place. Why is this so? If you fill it according to this scheme, then you will not have any air pockets.

If after tightening the bolts the play does not disappear, then the reason is in the bearings on the shaft. It is important to remember that pump wear is also affected by the tension of the accessory drive belt. Despite the fact that the process of replacing a pump seems simple, you should exercise extreme care and caution when working. Having completed the repair, you should once again go through the instructions. Make sure the Niva Chevrolet repair of the pump mounts.