How to replace the pump on a Chevrolet Niva yourself

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 -

HEPUMetelliDolzValeo

. Suitable from domestic products

TZA

"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.

Replacing a Chevrolet Niva pump with air conditioning: how to change it yourself, video repair

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

Antifreeze is leaking.

Hello comrades! Well, just wandering around the expanses of the global Internet!) Now I got around to describing the painstaking replacement of the pump. There was only one type of pump in our city!) I had to take it. Impeller made of plastic.

I will try to describe it clearly so that a novice car enthusiast (and in Russia most start with used wrecks, so this is relevant) can replace the pump himself and in the shortest possible time.

Replacement can be done near the house in the open air in sub-zero temperatures. I removed the pump at night, shining a lighter in my teeth at -8C, and did the rest during the day. I’m not bragging, but I mean that nothing is difficult, everyone can do it))).

1— Unscrew all suitable pipes to the thermostat and remove it (if the antifreeze did not leak out during a breakdown, drain it first). 2— Unscrew the three nuts (13) securing the pump pulley and remove it (do not touch the belt tensioners).

3— Unscrew the four nuts (13) securing the pump and one of the studs (I used the left one from the bottom). 4— Pull the pump out towards the removed stud. 5— Thoroughly clean everything from the former gasket (in any repair), for convenience you can unscrew it all the studs.

6— Lubricate with sealant and 7— Screw on the pump, then reassemble in the reverse order.

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

The water pump is an integral part of every car. In Chevrolet Niva, water pump failure is more common on cars that have already run. But as a rule, pump failure does not happen suddenly. Therefore, it is important to recognize the signs of a malfunction in time and fix the problem. Replacing the pump is not particularly difficult and even the owner of this car can do it.

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.

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

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.

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.

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.
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.

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

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

The pump on the Shniva is a key element of the cooling system, on which the performance of the engine depends.

Repair of this unit is not provided by the manufacturer. Therefore, if any malfunctions are detected, the unit must be replaced.

This operation does not require high qualifications or special devices. To check the functionality and replace the pump on your own, you don’t even need a pit or overpass.

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 -

. Suitable from domestic products

The article about pumps was written already in 2021 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.

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.

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.

Also interesting: Do-it-yourself replacement of Niva Chevrolet silent blocks: upper hinges of the front arms, rubber or polyurethane?

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 (supplier of the Fiat conveyor). 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.

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.

TZA pump, conveyor

TZA pump, reinforced. In fact, this is a regular conveyor pump for Shnivy. It actually has a roller bearing, while the classic one had a ball bearing. But this is Russia and therefore with the word reinforced, it sells much better. The pump has a large plastic impeller installed. In my memory, I don’t remember it being torn off the shaft or exposed to antifreeze.

TZA pump, Powerfull impeller

Pump TZA, Powerfull or increased performance. This pump comes with a new type of impeller. On the box and the factory’s website it is written that this pump is 10% more productive than a regular one. The internals and body of the product are similar to the standard version, the only difference is the impeller. There is only one downside to this pump at the moment - pricing.

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

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 company Graf 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.

Therefore, it is better to buy a water pump only from a trusted manufacturer - HEPU, Metelli, Dolz, Valeo. From domestic products, TZA or Phenox are suitable.

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.

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

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.

Also interesting: UAZ or Niva - which is better, car characteristics and features ::

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.

The impeller, depending on the manufacturer, can be made of cast iron, steel or plastic.

The pump pulley receives rotation from the crankshaft through a poly-V belt, which simultaneously drives the generator and power steering. The belt tension is adjusted by a movable roller.

The Chevrolet Niva pump traces its origins back to the water pump of the legendary “penny”, VAZ-2101.

The durability of a critical component, according to the laws of logic, should be close to the service life of the engine itself, but something went wrong in the domestic auto industry. If a “penny” car required engine overhaul no earlier than 130...150 thousand kilometers, and the owner did not even know where the pump was installed, then today’s components do not last that long.

In the vastness and wilds of the Internet you can find a variety of data on the service life of the Chevrolet Niva water pump, from 10 to 80 thousand mileage, but most sources agree: every 60 thousand mileage we change the alternator belt, which means we change the tension roller, and At the same time, we replace the pump if it has not “quacked” before.

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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 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.

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.

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.

The pump or water pump in the car forcibly pumps antifreeze through the engine, ensuring timely cooling of the engine. Therefore, if you don’t replace it if it malfunctions, you simply won’t be able to go anywhere.

When the pump fails and cannot be repaired, this part must be replaced. If the pump does not pump antifreeze through the engine, this leads to overheating and serious damage. And engine repair is much more expensive than replacing a pump on a Niva-Chevrolet.

What are the signs that indicate the pump is faulty?

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.

Facts and myths about VAZ-2121 Niva

If at least one of the above points is present, you can safely make a diagnosis - the water pump needs to be replaced.

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.

Forced engine cooling

Some car owners believe that constant forced cooling of the VAZ 21214 engine with a mechanical fan copes better with cooling than an electronic system with a temperature sensor. To do this, an impeller with six blades is installed on the pump, as on old VAZ models.

Forced cooling is provided by a mechanical fan attached to the pump

Installation of a mechanical fan is carried out as follows.

Disconnect the power connector for the electric fan. Using a 10 mm wrench, unscrew the bolts and remove the fan from the radiator along with the diffuser.
Remove the generator drive belt and pump pulley.
Replace the three short pulley mounting bolts with long ones by screwing in the spacer nuts. Using these bolts, secure the impeller along with the pulley to the pump shaft.

The impeller is secured with long bolts through spacers in the form of nuts or plates

The nuts are installed to ensure that the blades of the new fan do not touch the power steering pulley on the crankshaft. If the nuts are not thick enough, you can place a metal plate or file each blade.

If the blades touch the pulley, they must be trimmed

A fan on the pump is not the best solution, although it may be useful in certain operating conditions. The reason is the load on the pump bearings, leading to accelerated wear. In normal mode, the unit lasts 40-60 thousand km, but with an impeller this mileage can be significantly reduced.

Replacing the pump on a VAZ 2121 Niva SUV yourself is not very difficult. Since it is unacceptable to drive with a faulty cooling system, the pump should be replaced at an early stage of wear. This is especially true for an all-wheel drive vehicle - even a minor problem can cause a rapid increase in engine temperature.

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Maintenance and Repair →

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.

Also interesting: Tuning Niva 2121 with your own hands: body, interior, suspension

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.

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.

Symptoms and diagnostics

Failure of the impeller oil seal causes coolant to leak from the drive pulley. It is quite difficult to determine a leak visually or by touch; the pulley and the pump itself are well “hidden” under the hood.

It is recommended that, after leaving the parking lot, you inspect the place where the car was parked. Traces of coolant on asphalt or snow can alert the owner to a possible defect. Also, a coolant leak can be prevented by a decrease in its level in the expansion tank.

Working shaft bearings operating without lubrication emit a characteristic noise when the engine is running, which increases as they wear out. Before the “finish”, the squeal of the impeller rubbing against the housing may also be added.

In a working water pump, there is practically no play of the working shaft in the bearings. If, after shaking the pulley with the belt by hand, you find even a slight gap, repairs are urgently needed.

If the impeller is destroyed, the coolant circulation stops, the engine quickly overheats, and the red warning light comes on. Antifreeze in the “water jacket” can boil and tear off the pipes, or squeeze out the head gasket.

Thermostat failure causing similar symptoms is extremely rare. If the thermostat breaks, it is usually in the open position; this is provided for by its design.

In any case, the engine should be turned off immediately and a tow should be sought to move to the repair site.

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.

About choice

AvtoVAZ catalog number: 2123-1307011-75.

It is equipped with a water pump produced by Tolyatti Automotive Units Plant CJSC (TZA).

On the shelves you can also find products from domestic SOATE, Fenox, Pekar. Of the imported ones, they are famous for the quality of products from Hepu (Germany), Graf (Italy), SKF (Germany - Spain).

The cost of a domestic unit starts from 880-900 rubles, imported ones can be found for 1900.

Counterfeit products from various shady manufacturers are very common on the market; outwardly they are practically no different from the original.

Important information:

A high-quality pump is packaged in a plastic bag and a bright cardboard box. The packaging must include the catalog number, specifications, Russian and ISO certificate numbers.
The product kit includes a gasket made of a special material similar to cardboard. A paronite gasket is a sign of a fake!
It is advisable to choose a pump with a cast iron or steel impeller.

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

Comments 16

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, 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.

you remove the cooler diffuser - if it is still there, of course. loosen the 3 bolts on the pulley and 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 antifreeze into the canister through a funnel with a primitive filter so that fallen dirt does not get into the middle. An hour of work, but you just need to take off your tie and jacket.

Source

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.

The sequence of actions is as follows:

1. Remove the air filter bell;

2. Remove the pipes going to the thermostat and pump;

3. Unscrew the 3 nuts securing the cooling fan;

4. Loosen the 3 bolts securing the pump impeller using a 13mm flat wrench

6. Loosen the tension with a socket wrench and remove the belt;

7. Unscrew the nuts securing the pulley using a size 13 wrench and pull it out;

8. Unscrew 3 nuts and 1 stud holding the Chevy Niva pump;

9. Remove the water pump, it will be more convenient to do this through the bottom by unscrewing the 2 bolts securing the protection;

10. Remove the remaining sealant and old gasket with a knife;

12. Install a new gasket;

Next, all operations are performed in reverse order:

13. Insert the water pump into its seat;14. Tighten the stud and fastening nuts;15. Install the pulley;16. Tension the generator drive belt;17. Apply sealant to the thermostat and pump outlet;18. Put on the pipes and tighten the clamps;19. Secure the air duct corrugation;20. Add antifreeze.

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

— 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 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!

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