Repair and replacement of the pump on the VAZ 2110/2112
VAZ cars of the tenth family (VAZ 2110, VAZ 2111, VAZ 2112, as well as all their modifications) are considered classic vehicles for most residents of Russia. At the same time, both the cost and the unpretentiousness of maintaining the machines make it possible to use them both for private use and for commercial purposes. But in the VAZ 2110/2112 device there is one node, the importance of which most motorists may not even be aware of. It's the cooling pump.
Why do you need a pump in a car
If we are talking about the operation of a car engine, then we immediately touch on the topic of its cooling. Indeed, without high-quality cooling, the engine will not be able to work for a long time and will definitely “boil”. Thanks to the circulation of the coolant, it becomes possible to operate the engine at any time of the year under any external conditions.
The power component on the VAZ of the tenth family has a rather complex structure. In the working cycle, the pistons rub strongly against each other, which invariably leads to strong heating of the surfaces. The only way to prevent overheating of the motor is to constantly maintain the desired temperature in the friction zone by circulating the coolant. It is for this purpose that the cooling system is provided in the design of the VAZ.
Coolant (antifreeze or antifreeze) is poured by the driver into the expansion tank of the machine. From it, the liquid is transferred through the nozzles to the water pump, and from there it goes to the radiator and cylinder block. The water pump (or pump) is designed to pump antifreeze through the system during engine operation. That is, the pump starts with the engine and turns off after the driver turns off the car. Without a pump, the entire cooling system can be considered inactive, since only the pump can create a rapid circulation of fluid through all parts of the system.
The pump is designed to create the necessary pressure in the cooling system to move the liquid.
The device in a metal case provides continuous circulation of antifreeze through the cooling system
How to check the pump on the VAZ 2110/2112
The driver, if there is a suspicion of a malfunction in the operation of the water pump, can check this unit without contacting a car repair shop. In this case, it is not necessary to remove the pump from the machine, the entire verification procedure is performed within 10 minutes:
Warm up the engine to the standard operating temperature (on the VAZ of the tenth family - 91 degrees).
Put on a glove on your right hand.
Pinch the fluid supply pipe that comes from the radiator by hand. In the event that the pump is working normally, then you can immediately feel the pressure of the antifreeze inside the pipe. If, when pressed, the hose is easily compressed, then the circulation of the coolant is greatly inhibited, which indicates a breakdown of the pump.
To identify pump malfunctions, it is enough to pinch the antifreeze supply pipe - if the hose resists compression, then the pressure in the system is stable
When checking, care must be taken, since the antifreeze heats up very much during engine operation: you can burn yourself on hot pipes and engine surfaces.
Symptoms of a Water Pump Problem
At the VAZ of the tenth family, diagnosing malfunctions in the operation of the water pump is quite simple: you need to constantly monitor the "behavior" of your car. There are only three signs of a pump malfunction:
Unusual noise or grinding noise in the timing assembly while driving.
Pump leak due to loss of tightness.
Severe damage to the timing belt (unsymmetrical wear, delamination or cracking).
Traces of coolant can be seen both in the timing unit itself and on the pavement after a long parking of the car
The main malfunction of the pump on the VAZ 2110/2112 is considered to be the exhaustion of the bearing - if the bearing is worn out or the timing belt is not properly tensioned, then the pump cannot be repaired.
Pump replacement for VAZ 2110/2112
One far from perfect day, the owner of a VAZ of the tenth family will be faced with the need to replace the water pump. Fortunately, the design of the pump itself is quite simple, so the pump rarely fails.
If you do not replace the water pump on time, then the consequences for the car can be very unpleasant:
breakage of the timing belt (a faulty pump wears the belt unevenly);
expensive repair of the cylinder head (if the drive belt is damaged, the valve mechanisms may bend);
motor overheating (jamming of moving parts, failure).
Choosing a pump for your car
So, you have decided to replace the pump. Now you need to go to the auto shop and buy the desired item. However, sellers offer a huge assortment of a wide variety of water pumps for the VAZ 2110/2112 - which pump to choose, so as not to miscalculate the price and not make a mistake in quality?
The price of a pump for an 8-valve VAZ 2110/2112 engine is from 800 rubles, for a 16-valve engine - from 1 thousand rubles. However, regardless of the cost and brightness of the package, when buying, you must definitely pay attention to the following details:
manufacturer (take products only from those companies that you know well);
the pump has its own catalog number (for example, a regular "VAZ" pump in all catalogs in car dealerships and on Internet sites goes under the number 21081307010);
the pump is sold in clean, unwashed packaging;
gasket included;
The pump comes with a factory warranty.
Motorists prefer a pump produced by TZA. The water pump of a domestic manufacturer is easy to install, lasts a long time and is inexpensive. However, there is a risk of purchasing defective goods.
I installed TZA myself. Z.Y. Didn't get past 10k. Rumbled loudly, a large backlash longitudinal and transverse. Replaced with HEPU.
I only approve of it (TZA). Be sure to see that there is a hologram sticker, a piece of paper with a shift stamp - there is a batch number, by whom and what shift did. The price is not singed, approximately 600–800 rubles. I do not remember exactly. Do not get fooled by metal impellers and overseas manufacturers. Take the factory one - tested on many, rolled back a lot. The main thing is not to be pale!
Kaban_21124
http://autolada.ru/viewtopic.php?t=272383
1 TZA, also went to Hepu, 2 out of three in a row were defective (they started screaming after 20 minutes of work)
Synthetic
http://autolada.ru/viewtopic.php?t=272383
Russian-made product is characterized by affordable cost and high quality of work
Where is the water pump located
On models of the tenth VAZ family, the pump is mounted on the right side of the engine block. The exact location of the pump is determined by the principle of its operation: the impeller blades of the pump begin to rotate from the energy of the timing belt. That is, the design of the car has already initially determined the landing site of the pump as part of the gas distribution mechanism.
The pump on the VAZ of the tenth family is located as part of the timing unit
Instrument preparation
Replacing a water pump with a VAZ 2110, VAZ 2111, VAZ 2112 is a procedure that does not require special equipment and specific knowledge. In addition, on these VAZ models, the very design of the machine greatly facilitates the work: you will need the usual set of tools:
wrench for 10;
wrench for 17;
open-end wrench for 19;
end head for 10;
screwdriver with a thin flat blade.
Do-it-yourself pump replacement does not require the use of professional tools or sophisticated equipment
It is better to prepare a container in advance for draining antifreeze (one or more vessels that can hold 10-12 liters of coolant). Of course, during the replacement it will not be possible to do without rags in order to quickly clean the leaks.
Do I need to drain all antifreeze from the system
Drivers, independently changing the pump to a VAZ, often wonder about draining antifreeze from the system. How much is it necessary to drain the coolant at all, and if so, how many liters?
There are concrete answers to these questions:
It is imperative to drain the antifreeze when performing any work with elements of the cooling system. Draining antifreeze ensures that pressure in the system is released and reduces the risk of injury. In addition, when dismantling and installing the pump, antifreeze will constantly flow out of the landing zone, which will create a lot of inconvenience and ultimately lead to incorrect replacement.
Regarding the question of how much antifreeze to drain, there are two solutions. The first is based on car care. As a rule, it is customary to change the coolant along with the pump, so it is better to drain the antifreeze from the system completely. The second option is suitable for those drivers who have only recently replaced antifreeze. In this case, it is possible to drain only part of the liquid from the system (about 2–3 liters) in order to relieve the residual pressure in the nozzles.
Draining antifreeze from the radiator cavity
Accordingly, after replacing the pump, it is necessary to fill in the amount of coolant that was drained before dismantling.
Step by step operation procedure
The replacement of the water pump is carried out on a viewing hole or overpass. An ordinary jack is also suitable, but you should take care in advance that the body is raised from the front right side and securely fixed with additional stops.
The pump replacement procedure is identical for the VAZ 2110/2112 with engines for 8 and 16 valves.
Replacing the pump is associated with the removal of the timing belt and tension roller
After the initial preparation, you can proceed to the main work:
Open the hood and remove the wire from the "minus" terminal on the battery.
Unscrew the cap from the expansion tank.
Get under the car and place a container under the cylinder block.
Unscrew the plug to drain the antifreeze and drain it into a container.
Reinstall the plug after draining.
Under it, the timing block will open - with a 10 key, unscrew the three casing bolts.
Remove cover from machine.
After that, fix the crankshaft at the highest point of the first cylinder: turn on the gear and turn the bolt that secures the pulley with a 19 key. You need to rotate until the shaft gear mark matches the mark on the rear casing of the timing mechanism.
It is better to insert a large screwdriver or a long bolt between the teeth of the crankshaft to ensure that it is static.
Remove the belt first, then the roller itself.
Unscrew those five bolts that secure the lower part of the pump to the timing.
Then unscrew the three bolts securing the top of the pump.
The pump housing is easy to pry with a screwdriver and pull out of the socket.
Install a new pump on the gasket.
Assembly work is carried out in reverse order.
Video: do-it-yourself water pump replacement
For replacement, it is better to use a water pump of the same manufacturer that was already on the car
DIY pump repair VAZ 2110/2112
It is not always possible for the driver to replace a faulty pump. In some cases, it is possible to repair the device by restoring the working functions of the pump. If the pump has not yet exhausted its resource (50 thousand kilometers), then you can repair it. However, the pump cannot be repaired without the use of a special repair kit. This is a set of rubber gaskets and parts that most often fail and need to be replaced.
In terms of composition, repair kits for pumps may vary - depending on which parts need to be changed.
In addition, you will have to thoroughly prepare for the repair: the place for disassembling and repairing the pump must be clean and even.
How to disassemble the water pump
After the pump is removed from the machine, it will need to be disassembled. Only after disassembly and thorough cleaning can it be possible to replace the parts of the pump that have come out.
Wipe the product with a dry cloth.
Loosen the pump pulley.
Pull out the retaining ring.
Tap the bearings off the shaft with a hammer.
Pull the shaft out of the housing.
Unfasten the impeller.
If something is left of the gland, then pull out the remnants of the gum from the body.
The procedure for disassembling the water pump is intuitive: until you remove the pulley, it is impossible to get to the shaft and impeller
After that, the cavity of the pump itself must be thoroughly cleaned of dirt and old deposits - you can flush the pump with the same gasoline that is usually filled into the VAZ 2110/2112 tank.
A visual inspection of the pump parts will show which element needs to be replaced. Usually, a pump leak is due to rotting of the stuffing box, and whistling during engine operation or grinding at high speeds is due to shaft wear.
Video: pump disassembly
Oil seal replacement
An oil seal is a gasket that is made of rubber and metal inserts. During normal pump repairs, changing the seal is included in the list of mandatory procedures, since the gasket is a rubber product in its structure, and therefore wears out quickly.
Replacing the seal is not difficult:
The old gasket is removed from the shaft.
The landing site is cleared of dirt.
A new seal is installed.
The rubber-metal product that ensures the tightness of the pump is called an oil seal.
Before installing the rubber seal, you can lubricate it with antifreeze so that the seal “grinds” to the shaft faster.
Changing the shaft with bearings
Most often, it is the bearings that are “loose” that need to be replaced. But knocking them off the shaft is a very tedious business. In addition, a hydraulic vice is required, which not every driver has. Therefore, it is easier to replace the bearings together with the shaft.
Again, the procedure for replacing the shaft is not difficult: a new shaft is driven into place of the old shaft.
It is not possible to knock out the old bearings from the pump, so it is easier to replace the shaft with them
How to replace the nozzle on the pump
Sometimes, due to unstable pressure in the cooling system, the hoses for supplying or removing antifreeze can be deformed. New nozzles cost a penny, and new metal fastening clamps will not be difficult to buy.
If the pipe is swollen, this is a clear sign that the rubber will soon burst. Cracks and dents on the tube also indicate the need for an early replacement.
To make a replacement, you must:
Loosen the clamp with a screwdriver.
Remove clamp.
Disconnect the hose from the pump.
Loosen the clamp on the back of the pipe and remove the fastener.
Remove the pipe from under the hood.
The clamp, when the pipe is compressed, can severely damage the rubber, which may cause leakage of antifreeze
Why do we need a second pump in a car design
On some modern car models, a second pump is already installed from the factory. This equipment allows you to provide the most reliable cooling of the engine under any load.
An additional pump on the car is required to create better cooling. If we talk about the owners of the VAZ of the tenth family, then most often the second pump is mounted to optimize the operation of the stove in winter.
In this case, the pump housing is bolted to the motor housing with a special bracket.
Installing an additional water pump
The main advantage of the VAZ 2110/2112 is that cars have a simple structure of the cooling system. Therefore, it is possible to install a second pump and organize a small circle of antifreeze circulation without any problems. To work, you need to prepare in advance:
new pump;
two hoses (one long, the other short);
sealant;
fasteners (depending on where it will be easier to attach the pump: metal clamps, bolts and nuts).
It is necessary to assemble a small circulation unit from a new pump and hoses. To do this, two hoses are attached to the pump fittings and fixed with clamps. It is important to follow the rule: a long pipe is responsible for supplying antifreeze to the pump, and a short pipe is responsible for the outlet.
Before installing a new unit on the machine, the coolant must be drained.
The procedure for installing the assembled node is as follows:
Find two hoses at the cooling radiator (one of them brings the antifreeze to the stove, and the other performs a diverting function).
Disconnect the outlet pipe.
In its place, attach the assembled unit with the second pump.
Securely fasten the new assembly with metal clamps.
Fill with coolant and start the engine.
Check the second circle of antifreeze circulation for leakage.
The essence of the procedure - instead of a hose for supplying antifreeze, fix a small circle of fluid circulation with a second pump
It should be noted that the additional pump will start under the influence of the pressure that is created in the system by the first pump. Therefore, the second pump will last a long time and provide thorough cooling of the motor even under the most aggressive operating conditions.
Thus, the whole complexity of repairing and replacing a water pump on a VAZ 2110/2112 comes down to correctly removing the assembly from the car and installing it back. Moreover, the installation of the pump takes much longer due to the change of the timing belt and roller. The services of a specialist will cost about 1000–1500 rubles, therefore, if there are doubts about your competence, it is better to pay the service station masters and be sure of a competent replacement of the water pump.
