How the stove works on the VAZ 2107. We modernize and change the stove on the Seven with our own hands

Before the onset of cold weather, every responsible driver conducts a routine inspection of the car and. Most often, regular oil and antifreeze changes are made, car tires are changed for the winter version. The stove also requires special attention, which is one of the main units of the car, which provides comfort for the driver and passengers in the cold season.

This article will discuss the device of the VAZ-2107 stove and its correct setting for high-quality interior heating.

The device and principle of operation of the stove VAZ-2107

In order to carry out preventive maintenance of the heating system of the vehicle interior and correctly configure its operation, it is necessary to initially understand the device of the VAZ-2107 stove.

The stove in the seven is located in the cabin and is attached to the compartment partition on the motor with four fasteners. A rubber seal is installed between the motor and the stove. Air to the stove comes through special holes in the hood. Behind the heater in the engine compartment is an air supply box. The air passes through the radiator, where it warms up, and enters the car either under the pressure of cold air from the street at high vehicle speeds, or which creates air movement under pressure. The fan has three speeds: neutral, low and high. The fan speed switch is located on the dashboard of the car.

The stove radiator uses the liquid of the machine's cooling system to function. The amount of hot liquid that enters the radiator,. It is located near the floor of the vehicle on the passenger side and comes from the flex rod control lever. The control lever is located on the dashboard of the vehicle. The top switch of the stove is responsible for the heater tap. In the extreme right position, the switch fully opens the tap, the maximum possible amount of coolant enters the radiator. In the switch position on the left, the valve is closed, antifreeze does not enter the radiator, and the stove remains cold.

The heater motor is located under the radiator. A resistor is included in the electrical system of the motor, which makes it possible to switch fan speeds.

Under the action of the fan, warm air flows through the pipes towards the side windows, to the windshield and to the deflectors. With the help of deflector grilles, you can change the air supply route for directional airflow. Hot air is controlled by opening or closing the stove damper, the cover of which is regulated by flexible rod levers. The middle lever is responsible for the air supply hatch. In the extreme right position of the switch, the maximum possible amount of air from the street enters the machine. In the extreme left location and hermetic closing of the lid, air does not enter the passenger compartment.

The lowest lever is responsible for the deployment of air flows. The right position of the lever provides maximum air supply to the side windows of the machine, the left position provides airflow to the windshield.

A detailed connection diagram for the ventilation and heating system VAZ-2107 can be found in the technical documentation for the vehicle.

Common oven problems and how to fix them

Before the onset of cold weather, it is imperative to check the functioning of the main elements of the VAZ-2107 heater.

Most often, the following malfunctions occur in the interior heating system of the seven:

1. Poor connection of pipes and air supply pipes.
2. Leaking radiator and heater faucet.
3. Malfunction of the electrical equipment of the stove - oxidation of wires, failure of the motor or stove fuse. The fuse is located in the block under the hood of the car. The fuse block is located on the partition between the passenger compartment and the engine compartment on the passenger side.

Even a novice driver can get along with such malfunctions in the heating system. More serious breakdowns may lead to the need to purchase a new stove.

First you need to conduct a visual inspection. To do this, you need to disassemble the stove and clean it from particles of debris and dust that have gathered over the summer period.

One of the most common problems in the VAZ-2107 heating system is poor-quality sealing of the stove air ducts. This problem can be eliminated by treating the cracks in the plastic elements of the heater housing with silicone. And also the holes near the nozzles must be sealed with rags. Eliminating the holes will reduce the loss of warm air and will be accompanied by a faster warming up of the cabin.

The next step is to check the heater tap and radiator for leaks. This is the main headache for owners of domestic cars. If the stove faucet or pipes are leaking, they must be replaced with new products. At the same time, sealing butt gaskets are also changed. If the radiator itself is leaking, then there are two options for solving the problem. Most often, on the sevens, an old-style copper radiator is installed. The copper heatsink can be soldered and thus extend its life. If the seven is equipped with an aluminum radiator, then it cannot be repaired and it needs to be replaced with a new product.

If, after carrying out all the preventive manipulations, cold air enters the cabin, there may be a clogged radiator, then it will need a thorough cleaning. Experts recommend preventive flushing of the radiator at least once a year. At the same time, all hoses and pipes are washed.

For prevention purposes, it is important to inspect the wiring of the stove for oxidation, or poor insulation of the contacts in order to avoid short circuits, burnout of the motor and the fuse of the heating system. If the stove is working, then a visual inspection and troubleshooting is sufficient. Otherwise, it is required to check the functioning of the elements of the electrical circuit using a tester.

Such simple manipulations will save you from unpleasant situations with the heating system during the cold seasons.

Stove modernization

Very often, in parallel with the prevention of stove malfunctions and its driver settings, the heating system is modernized for more efficient operation.

Most often, for these purposes, the standard fan and resistor are replaced with products from the eight. The new fan has a larger size, due to which more warm air is supplied, and the interior of the vehicle warms up faster. The new fan melts into the standard seat with virtually no modifications. It is only necessary to cut off one of the aerodynamic ridges from the impeller. After such improvements, it will also be necessary to replace the standard fan button with a product from the eight.

Sometimes, for better blowing of the driver's side windows, additional small fans are installed in the deflectors. Such improvements, in combination with preventive work, will ensure comfort and warmth in the cabin even in the coldest times.

Summing up

Timely diagnostics and checks of the elements of the heating system of the car is a guarantee of high-quality operation of the stove. Experts recommend checking the heating system on the VAZ-2107 at least twice a year - in autumn and spring. Any driver can handle preventive cleanings and settings of the stove with his own hands, for this you only need to understand the design of the heating and ventilation system and the principle of its operation. The easiest way to do this is to always have a visual instruction manual for your car nearby.

Do not put off for further times the work to improve the functioning of the heating system of the car. Proper care will ensure uninterrupted operation of the heater and a comfortable temperature regime of the cabin at any time of the year.

No matter how reliable the car is, sooner or later a breakdown of one or another part occurs. Owners of the VAZ 2104–2107 sometimes have to deal with the problem of poor interior heating or the appearance of a stove radiator leak. In this case, you need to deal with the reasons, repair or replace the product.

What is a car heater radiator

Almost every car is equipped with an interior heating system, in which one of the main elements is a radiator. Thanks to this part, heat is taken from the coolant and its subsequent supply to the passenger compartment.

Where is the stove radiator installed on the VAZ 2104–2107 and what functions does it perform

The stove radiator on all classic Zhiguli is located in a special box under the front panel. The product is a heat exchanger, the main function of which is the transfer of heat from the coolant (antifreeze) with subsequent distribution throughout the cabin. This assembly works in the same way as the main radiator of the power unit. In order for the stove to function correctly, the heat exchanger must be constantly heated. It is provided by connecting the radiator to the engine cooling system using tubes and rubber pipes and constant circulation of fluid through a water pump (pump).

The stove radiator on the "classic" is located in a special box under the front panel

Furnace radiator device

The heat exchanger consists of two tanks and copper or aluminum honeycombs. Tanks are connected by soldering or sealing, depending on the material of manufacture of the part. The main components of the stove, in addition to the radiator, are the fan and the control unit, which consists of levers and cables.

1 - additional resistor of motor speeds; 2 - fan casing; 3 - fan guide casing; 4 - spring holders of the lower case; 5 - radiator housing; 6 - air intake cover; 7 - radiator gasket; 8 - stove radiator; 9 - coolant pipes; 10 - stove tap; 11 - impeller of the heater motor; 12 - heater motor; 13 - spring latch of the stove motor; 14 - stove motor cushion; 15 - damper of the side air inlets; 16 - bottom cover (flap) of the stove, blowing legs

Air from outside passes through a hole in the hood and enters the plastic casing of the air inlet located in the engine compartment under the windshield. Then the air flow enters the heat exchanger, which is heated by the coolant (coolant). When the car is idle or driving at low speed in the cabin, the stove fan is turned on, which drives cold air through the radiator, thereby heating it and supplying it to the cabin.

The stove radiator consists of tanks and honeycombs through which coolant circulates.

While the car is moving at high speed, the fan can not be turned on, since sufficient pressure is created from the oncoming flow to force warm air. The more the coolant heats up, the more heat the radiator gives off. The level of liquid entering the heat exchanger is regulated by means of a valve. Therefore, if there is a need to change the temperature in the cabin, for example, to make the air less hot, the valve is partially or completely blocked by means of a flexible rod and a lever.

The control of the stove is quite simple. There are several knobs on the central panel:

Radiator malfunctions, their signs and causes

During the operation of VAZ 2104, 2105, 2107 cars with a stove radiator, malfunctions may occur that require repair work. As a rule, all problems boil down to the fact that the efficiency of interior heating is reduced. Consider the most likely causes of this phenomenon.

Problems with the heat exchanger can manifest themselves not only in the form of cold air supply instead of hot air, but also in the appearance of a leak. You can detect the problem by the formation of a puddle on the floor, as well as by the appearance of an oily coating on the side and windshields during the operation of the stove. The reasons may be:

• coolant leak through the stove tap;
• leak from the pipe;
• radiator leak.

In the first two cases, a worn element needs to be replaced, and if a leak occurs from the radiator, the part needs to be repaired or replaced.

If antifreeze is used in the cooling system, and not water, the coolant leak must be eliminated as soon as possible, since the liquid contains substances harmful to human health.

How to replace and repair the radiator of the stove VAZ 2104-2107

If your Zhiguli has problems with the heater radiator, you need to know how and in what sequence to make repairs.

What tools will be needed

First of all, you need to prepare the necessary tools and materials:

How to remove the heater core

Work on replacing the radiator on carburetor and injection engines is carried out in the same way. First of all, you need to drain the coolant from the cooling system, for which they unscrew the plug on the engine block and drain the antifreeze into a suitable container. After that, you can proceed to the dismantling of the node.

1. We loosen the clamps securing the inlet and outlet pipes of the stove radiator in the engine compartment and tighten the hoses.

   Having unscrewed the clamps, we tighten the hoses from the radiator tubes

2. Having moved to the salon, we unscrew the fastening of the shelf located under the glove compartment.

   To remove the shelf located under the glove box, unscrew the two screws on the right and one on the left.

3. When the shelf is removed, access to the stove tap opens. Using a 7 mm wrench, unscrew the cable mount and move the flexible element to the side.

   Using a 7 mm wrench, unscrew the fasteners of the heater control cable

4. To get close to the radiator, remove the latches of the stove body, prying them with a screwdriver and thereby removing the lower part of the box.

   To remove the lower part of the heater, you will need to pry 4 latches with a screwdriver

5. We remove the heat exchanger together with the faucet.

   To remove the radiator, just pull it towards you.

6. We unscrew the fastening of the locking mechanism and replace the radiator or repair it.
7. We unscrew 2 bolts from the tap, disconnecting it from the tube, inspect the sealing elements, check the mechanism itself.

   We disconnect the tube from the old tap and remove the sealing gum

To check the operability of the faucet, you can evaluate the condition and size of the passage hole and how easily the lever rotates by appearance.

Video: replacing a heat exchanger using the VAZ 2107 as an example

How to fix a leaking heater core

If the radiator of the VAZ 2107 heater or another classic Zhiguli model is leaking, then there are several ways to fix the problem:

• replace the part with a new one;
• apply special additives;
• repair the old heat exchanger.

If in the first case there should not be any problems, then additives should be taken more carefully. This is due to the fact that such funds can not only eliminate the leak, but also clog the radiator cells. Therefore, it is preferable to repair the part. If you have experience with a soldering iron, then by soldering you can try to fix the problem area (only on a copper radiator).

To work, you will need the following tools and materials:

After dismantling the radiator, the leak can be detected by a colored spot in accordance with the color of the antifreeze. The essence of the repair is as follows:

• cleaning the leak with sandpaper;
• degreasing;
• soldering with a soldering iron.

Soldering acid is often used as a flux.

Soldering can also be done with a gas burner. After repair, it is recommended to rinse the radiator and check for leaks.

Video: soldering the stove radiator

Flushing the radiator

For flushing, the radiator is connected to a water tap using a hose, after which the water is driven until it is clean. To check the tightness of the radiator, you can use a hand pump for tire inflation or a compressor, while one outlet of the heat exchanger is closed with a finger or a plug, and air is pumped through the second. The part itself must be immersed in a bucket of water. If there are no air bubbles, then the repair was successful. Otherwise, the soldering is repeated or the part is simply replaced with a new one.

The pressure in the radiator when checking the tightness should not be more than 1 kgf / cm².

To check the tightness of the radiator, air is supplied to it from a compressor or a hand pump.

Some car owners use cold welding or sealant to fix leaks. These substances are applied to a previously cleaned and degreased surface in accordance with the instructions. Which method and means to give preference depends only on your personal preferences.

How to install a heat exchanger

When installing the radiator, it is recommended to use new seals and pipes to avoid leaks. Installation is carried out in the following order.

1. Install the gasket and fix the inlet pipe to the tap and outlet to the radiator.
2. Attach the locking mechanism to the heat exchanger.

   A faucet with a tube is installed on a new radiator

3. Mount the radiator in place.
4. The crane control cable is fixed, not forgetting to make adjustments for full opening and closing of the latter.

   After repairing or replacing the stove radiator, coolant is poured into the system

5. Check the heating system for leaks.

When the assembly process is completed, you need to start the engine and let it run until the coolant reaches operating temperature. After that, you need to check all connections for leaks. On the expansion tank, check the level of antifreeze and, if necessary, top up.

Radiator selection

If it was found that the stove radiator needs to be replaced, you need to decide how to choose a new part. Today, there is a wide selection of heat exchangers on the automotive market, so choosing the best option is sometimes difficult. The part can be purchased for both 500 rubles and 3 thousand rubles. However, you can choose a product of good quality and at an affordable price. Preference should be given to the following manufacturers:

When buying a new radiator, pay attention to the following:

• a quality product cannot be cheap;
• the seller should require a certificate to reduce the likelihood of acquiring a fake;
• a good heat exchanger should have honeycombs close to each other.

In addition to the above, it is worth taking into account that the part can be made of aluminum or copper. Copper radiators have undeniable advantages, which are due to high heat transfer and ease of repair. However, due to their high cost, they are used less and less. Aluminum have an affordable cost, less weight, but in the event of a leak, restoring the part will be quite problematic. Therefore, as a rule, aluminum products must be replaced.

An aluminum radiator is cheaper than a copper one, but if a leak occurs, it will have to be replaced

If a copper radiator can be soldered at home using ordinary solder, then an aluminum radiator cannot be repaired in this way.

Video: which radiator to choose on the Zhiguli

Diagnosing problems with a stove radiator on a Zhiguli is not as difficult as it might seem at first glance. If there are problems with the heat exchanger, then it is not necessary to contact the service to fix them: you can do the work yourself, after reading the step-by-step instructions.

Every autumn, a good car enthusiast thinks about preparing the car for winter. Particular attention should be paid to the preparation of the VAZ 2107 stove, which should heat the car well. The heating system fails for various reasons, and if you don’t pay attention to it in the summer, then in the winter, during severe frosts, all the windows will freeze and fog up from the inside, and it will become dangerous to drive such a car, and maybe even impossible.

It is necessary to know the device of the stove well so that in winter you do not have unpleasant surprises with interior heating.

Stove device

The stove consists of the following parts:

1. The heater is installed in it (marked with the number 5 in the figure), it heats the air penetrating from the outside;
2. The stove fan, or motor (indicated by the number 14 in the figure), it pumps a stream of warm air into the cabin, it is fixed in a special casing (indicated by the number 16 in the figure) on elastic cushions that dampen its vibration;
3. The stove control system is a fan button (indicated by the number 18 in the figure), three heating mode control knobs - blowing on the windows, air intake from the passenger compartment or from the street and opening and closing the stove tap.

1, 9 - air ducts for heating the side windows on the left and right;
2 - windshield heating air duct;
3 - radiator casing;
4 - air intake cover;
5 - heater radiator;
6 - radiator tap;
7, 8 radiator hoses for supplying and discharging hot fluid of the cooling system;
10 - rotary deflectors;
11 - air duct damper;
12 - air distribution cover;
13 - fan guide casing;
15 - air distribution cover lever;
17 - control rods;
19 - central air duct.

The heating system works in the following order:

• Air for heating comes from the outside, through the air intakes on the hood.
• Under the hood there is a special box, insulated with a rubber seal, for air flow.
• From it, the air flow is directed to the stove.
• Further, the air is heated by a radiator, which is fed with antifreeze, antifreeze. The degree of heating is regulated by the heater valve. The faucet is controlled by a flexible rod, using a control lever.
• Air at a high speed of the car can enter the passenger compartment without the fan turned on. Therefore, at high speed, you can use the stove without additional load on the car's electrical network. The interior heater is turned on by a fan switch that has three positions - neutral and two switching speeds: low and high. The speeds are provided by a resistor, it increases the resistance of the circuit and reduces the speed of the fan.
• The fan accelerates the warm air flow through the air ducts to the sides, to the side windows for good visibility of the rear-view mirrors, and to the grille deflectors, which can be changed in the direction of the air flow for better airflow. There is also a stream of warm air through the air duct for blowing the windshield.

In the figure above, the blue color shows the circulation pattern of the cold air flow, and the orange color shows the flow pattern of the warm air flow.
The main parts of the heating system:

1 - air distribution cover;
2 - fan motor;
3 - fan, impeller housing;
4 - heater valve;
15 - radiator.

The stove is controlled:

The heating system, which uses the heat of the coolant, is responsible for heating the interior of the VAZ 2107. This scheme, recognized as optimal for cars with internal combustion engines, has been used in cars since the middle of the 20th century.

Like any car unit, the VAZ 2107 stove may stop working. In winter, such a breakdown makes the operation of the car impossible: the windows sweat or become covered with frost, which worsens the view. For effective repairs, it is necessary to know the design of the interior heating system well.

The device and operation of the heating system VAZ 2107

The system includes the following components:

1. Heater VAZ 2107, whose task is to heat the air. The main element of the heater is a radiator through which coolant circulates.
2. A fan that directs heated air into the passenger compartment. It is mounted in the casing by means of elastic cushions that dampen vibration.
3. Heater control system, including a fan button, handles and dampers of the heating control system.

The heating system works like this:

Through the grilles on the hood, air enters the air intake box located in the engine compartment near the windshield.

In the event of rain or heavy rain, the water separates from the air and flows into the holes in the box. This allows you to use the stove in any weather, but until the radiator heats up, the air entering the cabin during rain will be damp.

The air flow is directed to the heater VAZ 2107 and heated, passing through the radiator. The heating is controlled by a tap that regulates the amount of coolant passing through. The crane is controlled by a flexible rod attached to the control lever.

During movement, the air flow enters the engine compartment and the air independently enters the heater. During a stop or at low speed, an electric fan is used, controlled by a switch that has three positions: "off", "full speed" and "low speed". Reduced speed is provided by turning on the motor through a resistor that reduces the voltage on the motor winding.

After the radiator, the air enters the air ducts and exits through the deflectors, allowing you to change the direction of the flow. Warm air can be directed to the windshield and side windows, under the feet of the driver and front passenger.

Air flow control elements from the VAZ 2107 stove:

• Air distribution fan cover that regulates the air flow.
• Levers and handles that change the position of the air inlet covers and dampers that regulate the airflow.

Before repairing the VAZ 2107 stove, it is necessary to understand the causes of the malfunction.

Malfunctions of the VAZ 2107 stove and how to fix them

If the VAZ 2107 stove does not heat up and when the heater is turned on, the air leaving the deflectors remains cold, the reasons may be as follows:

1. Airing the cooling system. This can happen when replacing antifreeze or repairing components of the cooling system. To restore heating, you need to remove the air plug.
2. The heater tap in the open position continues to block the line. The reason for this is the clogging of the tap or the formation of scale in it due to the use of water in the system instead of antifreeze. To restore the heater's performance, the valve must be dismantled and then cleaned or replaced with a new one.
3. The stove stays cold when the faucet is open. The cause of this phenomenon may be an idle pump. This breakdown quickly makes itself felt through the rapid overheating of the engine, it is impossible not to notice it. If the engine is warmed up to operating temperature, and the pipes going to the VAZ 2107 heater remain cold, the pump needs to be repaired. One of the reasons why the pump will not work is a slip or broken alternator belt.
4. The air is cold and the inlet hose is hot. This is a common problem resulting from clogged radiator cells. They can become clogged due to scale, oil getting into the antifreeze, or the use of "leak repair additives". In this case, the VAZ 2107 stove must be dismantled and washed.
5. The radiator hoses are hot and the air is cold. This happens when the baffle in the radiator is displaced and a straight path is formed between the inlet and drain pipes. You can restore performance by replacing the radiator.

Another type of breakdown is an antifreeze leak. This is manifested in the appearance of condensation on the windows or the leakage of antifreeze into the cabin under the feet of the passenger and driver. The reasons here are:

• Antifreeze leaks through the heater valve. In this case, it can be replaced without removing the radiator.
• Leak occurs through a burst pipe. The solution is to replace the pipe with a new one.
• The heater core leaked. In this case, the repair of the VAZ 2107 stove consists in soldering or replacing the radiator.

If antifreeze leaks when the heater breaks down, repairs must be done immediately - ethylene glycol contained in antifreeze is toxic and inhalation of its vapors causes serious harm to the body.

Dismantling the heating radiator VAZ 2107

To perform the work, you need a Phillips screwdriver and a set of keys (open-end and socket).

Sequence of operations:

• loosen the heater hose clamps located in the engine compartment;
• remove the hoses from the pipes of the heater radiator (in this case, a small leak of antifreeze is possible);
• unscrew the screws fixing the rubber seal;
• dismantle the seal;
• unscrew the radio panel;
• disconnect the cable from the tap of the VAZ 2107 stove;
• using a screwdriver, dismantle the brackets on the fan casing;
• lower the cover down;
• remove the heater core.

Repair of a heating radiator VAZ 2107

Often, repairing a VAZ 2107 stove consists in replacing or repairing a heater radiator. Repair steps depend on the type and cause of the fault:

A clogged radiator can be flushed with water pressure. Scale on the walls of the honeycombs can be removed using a special tool that dissolves it.

A leak in a copper (brass) radiator can be sealed. Using a powerful soldering iron and solder, you can repair a hole or crack. Leaking aluminum radiators must be replaced.

Important: to eliminate leaks in the stove radiator or engine cooling system, you should not use products added to antifreeze - they can cause clogging of the VAZ 2107 radiator cells.

Assembling the heater VAZ 2107

Repair of the VAZ 2107 stove completes the assembly of the heater. Assemble it in the reverse order of disassembly. The work has a number of features:

• rubber gaskets must be replaced with new ones and lubricated with silicone sealant;
• before assembling the heater, it is necessary to attach pipes and a tap to the radiator;
• do not overtighten the nuts so as not to crush the gaskets;
• before putting on rubber hoses, the outer surface of the metal radiator pipes must be treated with a sealant;
• after the VAZ 2107 heater is assembled and connected, you must not forget to add antifreeze to the system and check its tightness.

Important: repair of the VAZ 2107 stove should be carried out in conjunction with a check of the serviceability of the engine cooling system components. This approach allows you to accurately determine the cause of the breakdown and reliably eliminate it.

Tuning stove VAZ 2107

You can improve the VAZ 2107 heater by installing an additional fan to increase the air flow to the windows. Another common type of tuning the VAZ 2107 stove is replacing the fan mode switch with a button.

Thanks to the heating system, the driver can always create the necessary microclimate in the vehicle interior. However, the system does not always work as expected. In this article we will talk about how the stove is repaired and finalized on a VAZ 2107 car.

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Stove device

How to repair and tune the heating system circuit and what to do if the stove control system does not work? Before you learn how to remove, disassemble and remake the unit in your car, let's look at the device. The heater is located in a housing inside the VAZ 2107 cabin and is fixed on the partition of the engine compartment using four studs. The place where the interior heater is connected to the body is sealed with a seal.

The main elements of the system:

• casing of the ventilating device;
• radiator with air intake cover;
• casing of the ventilating device with a cover of the distributor of an air stream.

The air flow that passes through the heater is heated and enters the passenger compartment. The VAZ 2107 stove is equipped with a radiator equipped with two hoses - outlet and inlet, which are led into the engine compartment and connected to the engine cooling system. The scheme is supplemented by a tap, which is installed in the supply line and is designed to regulate the flow of antifreeze into the system.

A fan is mounted directly under the radiator, the electric motor of which is located behind two elastic cushions located in the guide casing. Also, the circuit is supplemented with an additional resistor element installed in the power supply network of the electric motor. This resistor allows for faster fan rotation, which can be activated using the regulator on the control panel. As for the air ducts that are connected to the fan casing, they direct the air flow not only to the deflectors designed to blow the side windows, but also to the windshield (the author of the video is A V DRUG).

The air flow is controlled by opening and closing the covers, as well as the dampers of the stove. There are many reasons why you need to remove, repair, tune and refine the VAZ 2107 stove with your own hands. As a rule, all of them are connected with the fact that the stove does not heat well or does not heat at all.

The main breakdowns of the unit are:

• the radiator device, faucet, lines or junctions of branch pipes are leaking;
• the regulator for switching different operating modes does not work;
• replacement of the VAZ stove motor may be required if the wires are damaged with the impossibility of repairing them, sometimes the wires do not need to be changed, just clean it;
• non-working fan of the VAZ stove.

Heater upgrade

Every car owner knows that the replacement of the heater on the VAZ 2107 may be due to its poor performance. But not everyone decides to change the heater - most owners of the "sevens" decide to disassemble, repair, tune and redo the heater as a whole. There are many schemes for tuning and repair, but keep in mind that it is not so easy to implement them at home. Without problems, with your own hands, you can seal the joints of the system lines with nozzles, as well as redistribute air flows in accordance with the need (the author of the video is VAZ 2101-2107 REPAIR AND MAINTENANCE).

However, such an alteration of the stove will not improve the microclimate in the cabin. If you want the cabin air to be warmer, you will need to increase the airflow volume with a new radiator, since the factory device will not allow this. Fan replacement is also necessary in such cases. The best option would be to install an electric motor from the G8.

So, the scheme of repair and tuning of the heating system is as follows:

1. First you need to know how to remove the stove. You are required to dismantle the lower part of the structure, namely the casing on top of which the fan is installed, the latter can be dismantled.
2. After removing the fan, you should carefully cut off one of the so-called ridges that supply air flow to the legs of the front passenger and driver. This is mandatory, since the electric motor from the "eight" is much longer.
3. The impeller is dismantled. Inside this element, it is necessary to increase the diameter of the hole, into which the shaft must subsequently be carefully installed. Make sure that the new structure can fit into the installation site most securely.
4. Before installing a new fan, make a diagnosis of its performance.
5. The resistor should be replaced, because it is thanks to this element that the fan will work much quieter. As practice shows, it is best to install a resistor from the same "eight".
6. The blower switch should also be replaced. When the heating system is working, another current will begin to flow to it. Accordingly, over time, this button may fail.

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Fan Replacement

Dismantling

The assembly procedure for the fan is as follows:

1. The lower regulator of the stove must be moved to the extreme position towards the passenger. The control panel and a ware box with the shelf are removed. It is also necessary to dismantle the center console with the audio system.
2. Using a wrench, unscrew and dismantle the rod designed to control the damper. Unscrew the nut that secures the system radiator skins, as well as the nut that is located behind the glove box.
3. Disconnect the air line attached to the casing of the radiator assembly and dismantle the fan casing, as well as the device itself.
4. Pull out the rubber seal and unplug the red cable.
5. Using a screwdriver, you need to remove the retaining ring, which is located on the drive shaft. You should also remove the fan impellers and adjusting rings.

Repair

The disassembled fan must be repaired or replaced with a new, more powerful one, but experts do not advise doing this, since the heating system will have to be completely improved. As for the repair itself, this procedure will not take much time, since all the actions associated with it involve only the removal and assembly of the mechanism. In general, this is not difficult - if you need to replace the impeller or electric motor, this can be done without problems.

Assembly

How to assemble the device:

1. First, the adjusting rings are mounted together with the impeller.
2. Retaining rings are installed, the red wire is connected back.
3. The ventilating device is mounted on the installation site and fastened with brackets.
4. The central part of the console with the audio system is connected.
5. a glove box, a control panel, as well as a shelf are put in place.

Video "How to change the heater radiator on the seven"

Instructions for replacing the radiator device on the domestic "seven" are shown in the video below (the author of the video is Auto Fix Info).