Replacing a Chevrolet Niva pump with your own hands - a site about the famous domestic car Grant

Chevrolet Niva Niva67 › Logbook › Replacing the Chevrolet Niva pump.

Something started making noise, or rather, it started making noise about a month ago.
But the sound appeared and disappeared, but here there was a constant noise. I was a little upset until the thought “Pump” dawned on me. It’s business))) Removing the belt showed that yes, it’s darling. So for those who have not encountered the replacement, a short report. It's not complicated at all. Unscrew the tensioner and remove the belt from the pump.

We unscrew the protection and boot and climb up to the pump. Unscrew the clamp.

We insert a small screwdriver or nail under the pipe. Carefully pour the liquid into anything you can get your hands on.

Unscrew the 3 bolts securing the pump housing to the engine and remove the pump.

When removed, another 100 grams of liquid may leak out.

Then disassembly, replacement of the worn part and reassembly in reverse order.

I found a cool pump.

The width of the main blades is the same, but the working surface of the new one is different (blue and red arrows) plus additional blades.

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.

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.

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

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

Reassemble in 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!

Source

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.

Signs of malfunction:

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.

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

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.

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.
Disconnect the air duct spacer from the bracket on the cylinder block.
The spacer mounting bolt is unscrewed with a “10” wrench
Disconnect the right sleeve of the throttle body pipe.
The clamp screw is unscrewed
Remove the air duct assembly with the spacer.
Removable air duct makes work area easier to access
Loosen the thermostat pipe clamps and remove the thermostat.
After loosening the pump pipe clamp, the thermostat can be easily removed
Loosen the tension on the accessory drive roller.
Tension of the generator belt roller is done with a key set to “13”
Remove the belt from the tension pulley.
The belt is removed after the tension on the roller is released.
Using a “13” key, unscrew the 3 fastening bolts and remove the pump pulley.
Using a screwdriver, the pulley is blocked from turning.
Unscrew the nuts securing the pump cover.
The nuts are unscrewed with a wrench to “13”
Remove the pump along with the impeller.
Remove the pump cover complete with impeller
Remove the pump housing gasket.
Wear of this gasket causes coolant leakage
Install the new pump in reverse order. Treat the joint between the pump housing and the cover with sealant.

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.

Pump repair

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.

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.

Source: https://carnovato.ru/zamena-pompyi-niva-shevrole/

Replacement frequency, what antifreeze to fill

In the maintenance information for Niva Chevrolet, it is recommended to change antifreeze every 60,000 kilometers. But many car enthusiasts are not happy with the flooded antifreeze, which becomes unusable by 20 thousand. Dzerzhinsky antifreeze is usually filled from the factory, but there is also information about pouring red antifreeze.

When choosing coolant, it is better to use a concentrate rather than a finished product. Since it can be diluted in the required proportion, because after flushing there is still some distilled water left in the system.

A good choice would be Castrol Radicool SF concentrate; it is what dealers often recommend for use.

If you choose ready-made antifreezes, then you should pay attention to the red AGA Z40. Well-reviewed FELIX Carbox G12+ or Lukoil G12 Red

How much antifreeze is in the cooling system, volume table

Model	Engine capacity	How many liters of antifreeze are in the system	Original liquid / analogues
Chevrolet Niva	gasoline 1.7	8.2	Castrol Radicool SF
AGA Z40
FELIX Carbox G12+
Lukoil G12 Red

Replacing the Niva-Chevrolet pump yourself

Noise when the engine is running. Antifreeze is leaking. The pump does not stay firmly in place. There is no circulation of cold air in the radiator. The air conditioner doesn't work well. If at least one of the above points is present, you can safely make a diagnosis - the water pump needs to be replaced.

Causes of failure

Most often, the oil seal or bearings fail. If there is a leak, most likely this is a violation of the tightness of the part due to weak tightening of the fasteners or a worn gasket. If play is noticeable when touching the pump pulley, tighten the bolts. Does not help? This means that the cause of the malfunction is in the bearings, and the pump on the Niva-Chevrolet needs to be completely replaced.

How to choose a pump

There is a wide range of pumps from different manufacturers on sale. It is not necessary to buy an original pump for the Niva-Chevrolet; other brands also work well on such cars.

It is important to pay attention that the impeller is made of high-quality material, for example cast iron. Steel or plastic blades are good, but not as durable. Among the inexpensive pumps, you can purchase the TZA 2123 pump. It features a reinforced oil seal and bearings

It features a reinforced oil seal and bearings.

Next, we’ll look at how to replace the pump on a Chevrolet Niva with your own hands. There is no need for an inspection hole, so everything can be done in the garage.

Sequence of work

If by the time of replacement the antifreeze has not yet leaked out, its remains should be drained from the cooling system into a container by unscrewing the radiator cap from the top and then from the bottom. Replacing the pump on a Niva Chevrolet with air conditioning will take a little longer, because the air conditioner bracket is attached to the pump. It will also have to be removed.

To keep the fans out of the way, unscrew them and move them to the radiator. To get to the pump itself, you can also jack up the car and remove the right front wheel. Using a 13mm wrench you need to unscrew the two nuts that hold the fluid supply tube to the pump. We do this carefully so as not to damage the hose, otherwise you will have to change it too.

Unscrew the pump mounting bolts from both the top and bottom. We do not touch the belt tensioners. Then unscrew the nuts of the main fasteners of the pump and one stud. The pump on the Niva-Chevrolet is replaced by carefully removing it. We clean everything thoroughly, you can even rinse the radiator with water, and lubricate it with sealant.

We insert the new pump according to the same procedure, only in reverse order. We insert a new gasket onto the housing lubricated with sealant, and install the pump on the bolts from the bottom side. We tighten the nuts as tightly as possible so that there is no play. We put a belt on the pulley and scroll until the pump holes are in their original places.

If necessary, the belt can be loosened. We remove the thermostat and clean the tubes, lubricate them and install them in place.

Replacing the oil seal and bearings

When there is no desire or possibility to completely replace the pump on the Niva-Chevrolet, we will fix the problem by replacing the oil seal and shaft with bearings. We remove the impeller from the pump, remove the old gasket from the shaft, and place a new one in the previously cleaned area. The shaft is changed using the same method. The fastening bolts are removed, the faulty shaft is removed and replaced with a new one.

However, replacing individual parts has its drawbacks: The cost of bearings and oil seals is much higher, so it is more profitable to buy a complete water pump. It is not recommended to change just one thing, the shaft, oil seal or impeller. This pump will not last long. Parts purchased separately may not fit.

You will have to process them with sandpaper, or the impeller blades will touch the body.

Final stage

Don’t forget to add antifreeze if it leaked out during a breakdown. It is advisable, of course, to fill in a new one, its characteristics are better. We thoroughly flush the engine cooling systems.

To prevent air locks from forming when filling in fluid, disconnect one of the hoses and pour coolant into the system until it begins to flow out from the other end of the radiator. We fasten the hose in its place.

Replacing the pump on a Niva Chevrolet without air conditioning will not take much time. To do this you will need several plumbing tools and a couple of hours of free time. At the very end, we start the engine and heater so that the engine warms up to the maximum.

Why do you need a pump in a car?

The cooling system of any car consists of a number of elements and coolant. One of the main parts is the water pump, called a water pump. The element is designed to circulate fluid through the system, resulting in heat being removed from the cylinder head and the cylinder block itself. The pump is not assigned any more functions, but the performance of the motor directly depends on it. If the water pump fails, the power unit will quickly overheat.

The most common pumps are centrifugal type, due to their design features. The part is driven from the engine crankshaft via a belt. The liquid circulates through the cooling system due to the impeller, which is located in the pump cover.

The main part of the pump is located on the outside of the engine, and the impeller is located inside the system. The operation of the pump is quite simple: with the help of a belt, the part from the crankshaft rotates, driving a gear or pulley rigidly fixed to the axis. An impeller is installed on the opposite side of the axis, which also begins to rotate. It is in constant contact with the coolant. When the engine is running, centrifugal force is created, which causes fluid to move through the system.

A pump for a car is necessary to circulate coolant through the engine cooling system and prevent it from quickly overheating

Pump repair

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.

Purpose of a car pump

Replacing a VAZ 2110 pump 8 valves video
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 it overheats.

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

How to Change a Pump on a Chevrolet Niva Video ~ AUTOTEXNIKA.RU

For any jeep, the engine cooling system is very important, especially if it has to “sit down” off-road. In this case, its engine will work in extreme mode, because there is no natural air flow to the radiator and motor, and the fan itself cannot cope with this task.

The factory Niva Chevrolet pump has a short service life

Now many owners of the Chevrolet Niva are noticing a situation where the factory pumps, after a short period of time, begin to leak and fail. As a rule, this happens after a short run (on average 10,000 km).

In this case, even small repair work does not help to cope with the situation, and as a rule, this ends with the pump having to be completely replaced.

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

But not enough motorists now know which pump is recommended to be installed on the Niva. Some amateurs conduct independent tests of these nodes, while others seek help on the Internet or from friends who have also encountered this problem.

Most car owners prefer spare parts from abroad. Below is a list of more popular manufacturers:

Airtex (Spain).
SKF (Germany-Spain).
Hepu (Germany).

All these companies are engaged in the creation of pumps for cooling systems. Such spare parts differ in performance because they all have huge impellers made of cast iron, which guarantees good pumping of water in the system and the durability of the pump, because its main parts are made not of metal, but of cast iron, and therefore they are less susceptible to corrosion.

Chevrolet Niva pump replacement

It is noted that seals and bearings also influence the performance of the pump and its service life. The owners' experiences with such pumps confirm this.

Pumps with iron impeller manufactured by Hepu and Tai

Pumps from the Graf company are especially popular. They differ from others in their large impeller, its correct offset, and also a 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.

It must be emphasized that almost always the pump can fail not because of its old age, but because of incorrect tension of the drive belt. This affects the centering of the shaft and therefore the bearings quickly fail.

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

The drawback is that the site has many fakes. At first glance, such a part is difficult to distinguish from the original, because the Chinese have learned to bypass all methods of protecting an unusual product.

The fact that the pump has failed can be determined by the corresponding sound that occurs when the engine starts. When replacing the pump on your own, you should keep in mind that a similar unit from a “penny” will fit on a Chevrolet Niva, but it will no longer fit on an ordinary Niva.

You should also see that the pump from the VAZ-2101 is cheaper than the unique one from Chevrolet. This will be needed by those who do not have the ability to spend a lot of money on buying spare parts from a foreign manufacturer.

But it also happens that finding foreign parts is quite difficult, especially if they are needed quickly.

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.

Chevrolet Niva › Logbook › Replacing the pump

Hello everyone and happy holidays!

The New Year began with a pompous farewell. A whistle appeared from under the hood, I opened it, saw a dangling pulley and splashes of antifreeze and an empty tank)) Fuck it, I thought. Never happened and here again Hope for the HEPA P620

ended ahead of time (I thought I would at least ride for a couple more years, but it was only enough for another 600 km). With grief, this pump covered approximately 30 thousand km, of which the last 9 thousand km were noisy and playful)

It’s extremely unpleasant, but it was already expected, because... the play was noticeable. I started looking for options. And there aren’t really any options. Playing the lottery, no matter what you take, you will be lucky or unlucky. Maybe for 5t.km, or maybe even enough for 30-40. I read on the Internet about the Fenox HB1004P1

, with reviews 50 to 50. I decided to take it. (Spoiler: this is my last purchase of parts from this company)

Ordered, picked up. It looks like nothing. Box, aluminum impeller, seems to sit more firmly in the bearing, stamps, drainage and other points. In addition, I bought a Gates 5PK1885

.I removed the old one quickly, because I already had experience. I took off the belt, the pulley and with a little effort the pump came out.

Put a new one, a gasket, a little sealant and you're done.

I wanted to install a pulley, but I noticed that the pump did not spin at all. Fuck it, I thought for the second time

Stupor for 5-10 minutes, because I don’t understand what happened. I unscrew everything back, and I feel that the impeller is rubbing along the internal cavity. I took it off, began to compare it with the old one (to be honest, I didn’t even think that even such a setup could exist - a lesson for the future for attentiveness):

This time, fortunately, everything worked out perfectly. I filled the frieze, the belt, started it, everything is fine. Now I wonder how long this miracle will last. So far everything is working quietly. After HEPU it’s not even customary to hear silence.

There are still two options left for the future if this one dies, which I also read online: Metelli 240575 and DOLZ L120

These are the things to do. Among the upcoming things, I plan to sort out the generator. The reason is also in the bearings. They started howling. Before it’s too late, I’m thinking of going through and pressing in new ones.

Replacing the pump of a Niva Chevrolet car

Replacing the water pump on a Chevrolet Niva is done quite rarely - either after installing a defective product, or when the pump’s life has completely expired.

The most typical pump malfunctions:

jamming;
flow;
severe wear of the pump blades;
production of bearings on the shaft.

The main signs of pump failure are the appearance of a whistle or even a crunching sound in the engine compartment while driving.

Pump selection

The choice of pump depends on the presence of an air conditioning system in the car. Using an air conditioner requires increased power of the water pump. Otherwise, the pump simply will not cope with increased loads.

For Chevrolet Niva without air conditioning, it is recommended to purchase domestic pumps produced by Fenox or TZA. Their price, depending on the region, is 300–600 rubles.

For a Chevrolet Niva without air conditioning, a water pump from a VAZ “kopek” is also perfect - it’s not at all expensive.

For cars equipped with air conditioning, it is recommended to install German pumps, for example, those manufactured by HEPU. The increased performance of such pumps is due to enlarged impeller blades. You can buy a pump for no less than 900 rubles.

Pump location

Since the pump impeller is rotated by the timing belt, the pump itself is located in the gas distribution system. To gain access to the pump, you will have to jack up the car, remove the right front wheel and timing case.

Required Tools

To replace the pump you will need a standard set of tools:

open-end wrenches;
flat blade screwdriver;
silicone sealant.

In addition, you will need a container to drain the coolant.

Procedure for replacing the pump

Before starting work, it is recommended to drain the antifreeze. This is necessary for two reasons:

the hose will not burst in your hands from strong pressure;
Coolant will not leak out of the holes and pipes of the cooling system.

After this, with the car jacked up and securely fixed, the right front wheel is removed. Next, perform the following steps:

The generator mount is loosened. The generator is moved as close to the engine as possible, the drive belt is loosened and removed from the pulley.
The three bolts securing the pump pulley to the engine compartment are unscrewed.
The pulley is removed from the pump shaft.
The four nuts securing the pump are unscrewed.
The pump is pulled out of the mounting socket. In this case, you can pry it off with a screwdriver.
The landing site is cleared of remnants of old sealant and other contaminants.
A layer of sealant is applied to the seat.
A new rubber seal is installed.
A new pump is installed on the seal.
Without excessive effort, the pump is secured with four nuts.
The generator pulley and belt return to their place.
New antifreeze is added.
The engine starts and warms up to operating temperature. If there is no coolant leakage and the car does not overheat, then the pump was replaced correctly.

Video: replacing the water pump

This scheme is suitable for Niva Chevrolet cars both with and without air conditioning. The only caveat concerns the removal of the alternator belt. On a car equipped with air conditioning, you can remove the pump pulley directly with the belt - this will not in any way affect the quality of the work performed.

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

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

Replacing a pump on a Niva

On a VAZ 2121 car, the coolant pump is located in the front of the cylinder block on the right side and its dismantling does not cause any difficulties even for beginners.

The pump on the Niva is located in front of the engine on the right side

Replacement Tools

To replace the pump, you will need the following list of tools:

head and ratchet wrench or socket wrench 13;
head at 17;
liquid drain tube of suitable diameter.

During the dismantling process, another tool may be required, for example, a hammer, a screwdriver, depending on the current situation.

To dismantle the pump, you will need a list of tools, which will depend on whether only the pump or the pump is being removed along with the housing

Draining the coolant and replacing the pump

Before you begin, you will need to drain the liquid (water, antifreeze) from the engine cooling system. To do this, you need to place a suitable container on the left side of the engine and, using a key, unscrew the bolt to 13, attach the tube to the drain hole and remove the plug from the radiator neck. Then you can proceed directly to dismantling the pump.

Chevrolet Niva 2004, engine Gasoline 1.7 liter., 80 hp, AWD drive, Manual - DIY

Comments 16

Good evening! I'm choosing a pump, the question is how long did it take?

3 years. This is about 90 t.km. mileage

I had a hard time with the nut number 3, but nothing from the existing tool fit in there. I could barely unscrew it.

Yes, it's disgusting. I have a 10mm L-shaped wrench just for these nuts.

I also recently changed it, only a little differently)))

Yes, it can be different here)

When I recently changed the belt, it got all dirty with coke, which stained my whole engine. Then I freaked out - the whole engine, where I could get to it, wiped it off with a rag until it was shiny)))) But at first I thought, if you loosen the genych, the belt will come off - oh no, Until I loosened the 3 nuts on the roller, I didn’t think about taking off the belt))) I also looked towards the pump, but I really hope that it will last for a long time - I really don’t want to do the Kama Sutra

I don’t rub it on purpose so that it can be seen if it leaks somewhere. 50 t.km. after the capital, nothing flows anywhere.

Good afternoon, what kind of pump is this (brand)?

Why do you need to remove the pump housing? You can immediately remove the pulley from it, and then the pump itself, by unscrewing the 4 nuts.

I thought that unscrewing 3 bolts and then calmly disassembling it on the table would be easier than unscrewing everything from below. You can get to the same goal in different ways))) I remember. The pulley was screwed on well, it was impossible to unscrew it on the car.

Finally, I changed the pump without a hole, drained the coolant from the thermostat, then removed the thermostat itself and took out the pump through this crotch and installed a new one. The business took about 2 hours with smoke breaks.

It's about an hour here, but that's when there is a pit or a lift.

Well, maybe I could have done it in an hour, but the first time I changed the pump without a murzilka, several times I just tightened the belt to unscrew the wheel on the pump))) then I figured out how to take the whole thing out.

It's about an hour here, but that's when there is a pit or a lift.

remove the cooler diffuser - if it is still there, of course. loosen the 3 bolts on the pulleys, remove the belt. remove the pulley, remove the half-pump, pull it up.

You drain the antifreeze from the block through a hose into a basin under the car. You pour the antifreeze into a canister through a funnel with a primitive filter so that fallen dirt does not get into the middle. An hour of work, but you only need to take off your tie and jacket.

Source

Replacing the pump

Replacing antifreeze

What is antifreeze and what is it used for? Antifreeze is a common name for all...

The pump is a special mechanical type engine cooling pump that is designed to circulate coolant throughout the cooling system. The pump is driven by transmitting torque from the crankshaft by a belt.

The pump is replaced if it is jammed, leaking (the bearing seal is broken) or insufficient cooling capacity caused by the small size of the pump petals, as well as the appearance of characteristic noise. After detecting the above-described faults, it is necessary to immediately replace the defective unit.

Repairing a pump on VAZ cars is a very complex process, and therefore its complete replacement is recommended.

When choosing a pump for the Niva VAZ, you should be extremely careful, since an incorrectly selected pump can cause it to jam (the pump petals are too large) or have poor circulation properties. Incorrect selection of a pump is determined by a manufacturing defect in the product or its mismatch with the car model (there are different engines with externally similar water pumps).

The process of replacing the Niva VAZ pump

Drain the coolant into a previously prepared clean container.
Loosen the alternator mounts and move it toward the engine to loosen the belt. Remove the alternator belt.
Unscrew the 3 bolts intended for mounting the pump pulley and remove the pulley itself.
Now unscrew the 4 nuts that secure the water pump and remove it. If it does not give in, you can resort to using a screwdriver or other flat tools.
Throw away the old gasket. Clean the seating area of old sealant and make sure that no dust gets inside the cooling system. Lubricate the landing area, gasket and mounting side of the new pump with a small layer of new sealant.
Reinstall the gasket and pump, tighten the nuts and leave the car overnight to allow the sealant to dry properly.
Replace the pulley and tension the alternator belt. Tension the belt according to the standard and tighten the generator mounting bolts.
Fill with coolant.
Start the engine, then warm it up. If the coolant leak and noise are eliminated, and the car does not overheat, it means that the pump replacement was completed correctly.

That's all. As you have already noticed, replacing the pump on a Chevrolet Niva is not such a difficult operation and does not require special skills from you as an auto mechanic. The main thing is to have a basic

Purpose of the pump

The power unit of any car and its components become very hot during operation. More than others, this concerns the combustion chamber, cylinder head and piston group. To maintain an operating temperature of about 90°C, the engine design provides a cooling system. As part of this system, a pump (water pump) circulates antifreeze through the cooling jacket of the engine, thereby reducing its temperature to operating levels.

The water pump has a simple device

If the water pump fails and forced circulation stops, the engine will overheat. Aluminum pistons will expand inside the steel liners and will initially severely scratch the ground walls. In the worst case scenario, the pistons will jam, causing the connecting rods to bend, and the engine will have to be overhauled.

The VAZ 2121 pump is a separate unit consisting of a housing on a flange with a shaft installed inside. On the shaft there is an impeller for pumping coolant (coolant) and a mounting mount for the pulley. The shaft rotates on two bearings, protected from the inside by a seal that prevents coolant leakage.

In a VAZ 2121 car, the water pump is located on the front of the engine above the crankshaft and generator pulleys. It is not attached to the cylinder block directly, but through an additional housing. Most often, the shaft with the impeller fails and must be replaced, but the housing remains in place.

The water pump shaft is rotated by the alternator belt