Step-by-step guide to replacing the stove radiator on a VAZ 2107

You simply cannot do without a heating system in a car in winter. One of the reasons for the malfunction of the heating in the car is the failure of the radiator. The article discusses cases when it is necessary to replace the radiator of the VAZ 2107 stove, instructions are given on how to perform it.

When is it necessary to replace the heater radiator?

It is found that the stove does not work, usually when it is necessary to heat the interior. Naturally, this happens in winter, and repairs will be urgent.

Heating system VAZ 2107

The most common cause of a heating system malfunction is the radiator.

It may not work for two reasons:

Leakage of coolant due to corrosive processes, physical damage or normal wear and tear. A leaking unit is indicated by a puddle of coolant that appears at the feet of the front passenger or driver.
The obstruction of the inner tubes prevents free air circulation through the unit. A sign that the pipes are clogged is cold or lukewarm air coming in. The reason for clogging is the deposition of oxidation products on the tubes or the ingress of various debris and all the same oxidation products.

Heat exchanger device diagram

We must make sure that it is the heat exchanger that is flowing. The cause of the leak may be a pipe or a heater tap. You can try to eliminate the leak by soldering if the machine is equipped with a copper-brass apparatus. But this does not guarantee that after a while the coolant leak will not resume.

In the case of a blockage, you can also try to remedy the situation by flushing the heating system with chemicals. But this is a temporary measure. In both the first and second cases, it is necessary to replace the VAZ 2107 heater radiator.

How do I find a new replacement device?

There is a large selection of heat exchangers in the automotive market, you need to be able to understand them in order to choose the most suitable one in terms of price and quality. You can buy a cheap unit within 500 rubles of an unknown manufacturer, but no one can guarantee that it will last a long time.

New heat exchanger Luzar

There are also expensive options. If funds allow, you can purchase a high quality copper-brass heater radiator with a guarantee for 3000 rubles. But alternative options for purchasing high-quality heat exchangers at an affordable price from well-known brands are also possible. You can cite several types of units from well-known manufacturers that are suitable for the VAZ 2107.

Aluminum units are made by the following manufacturers:

domestic - Avtovaz, Pekar, Luzar and others;
foreign: Germany - Oberkraft, Finland - Finord, Hungary - Extra;
SHAAZ and SB OR produce copper radiators.

Buying a product from a well-known manufacturer, you can still run into a fake. Therefore, when buying, you should know what you need to pay attention to (the author of the video is AutoAndElectronics).

When choosing a new unit, the following factors must be taken into account:

you should not strive to buy a unit that is too cheap, most likely, its quality will be low;
when buying, you should require a certificate from the seller, this will reduce the likelihood of buying a counterfeit;
you need to pay attention to the honeycombs, for a good radiator they are located close to each other;
it is important to have swirlers - plastic spirals that increase heat transfer during heater operation.

A high-quality radiator will serve for a long time, and the stove will warm up the interior well.

DIY replacement instructions

Replacing a heat exchanger consists of two stages: removing the old unit and installing a new unit.

For the procedure, the following tools and materials should be prepared:

Phillips screwdriver
a set of keys;
sealant;
container for draining the working fluid, you can use a 5-liter water bottle;
new heat exchanger;
clean rags.

Photo gallery "Replacement and installation of a heat exchanger on a VAZ 2107"

1. Remove the hoses from the nozzles.

2. Disconnect the crane cable.

3. We remove the heat exchanger with tubes.

In addition, you need to stock up on coolant and two rubber pads.

Dismantling features

Before, you need to drain the antifreeze from the heating system. To do this, it is better to install the machine on an overpass, inspection groove or other device that will allow you to get to the drain plug. To make the glass fluid faster, it is advisable to warm up the engine.

The dismantling procedure consists of the following steps:

To drain the antifreeze, unscrew the cap on the radiator and expansion tank.
Going down under the car, you need to substitute the container under the cylinder block and, by unscrewing the drain plug, drain the liquid from the system. When the coolant is completely drained, you can screw the plug back.
In the engine compartment, use a screwdriver to loosen the fastening of the clamps holding the heating system pipes. Then we disconnect both hoses and pipes of the stove tap. Wipe off the spilled liquid with a rag.
Further work is performed in the salon. It is necessary to dismantle the shelf of the radio tape recorder. For this, two screws are unscrewed.
After dismantling the shelf, the heater tap will be available. Use the key to unscrew the cable mount and remove the free end to the side.
The heater casing consists of two parts, which are held together by two steel brackets. We unfasten the staples and remove the lower part of the case.
The radiator can now be carefully pulled out together with the heater tap.
Then we unscrew the stove tap and inspect the gasket. If it is unusable, then we replace it with a new one.
Having unscrewed two bolts of the inlet pipe, we inspect the gasket. You should also check the performance of the crane and replace it if it is faulty.

Replacement process

To avoid leaks in the near future, the pipes and gaskets should be replaced with new products.

Replacing and installing a VAZ 2107 heating radiator is performed in the reverse order:

After applying sealant to the gasket, you need to connect the inlet pipe to the tap.
Next, the tap is screwed to the heat exchanger. It is also necessary to install a new rubber gasket between them. After installing the cable, it must be adjusted so that the valve opens and closes completely with the control lever.
Now we install the new device in its original place. Having installed the gasket, we fasten the unit.
Then we attach the hoses and tighten the fastening clamps.
After checking that the plug on the drain hole is screwed in, pour antifreeze into the system. When filling, the heater tap must be open so that coolant gets into the heat exchanger.
Next, we tighten the caps on the heat exchanger and expansion tank.

After installing the unit, you need to start the engine and let it run until it reaches operating temperature. Without stopping the engine, check all connections for leaks. You also need to check the coolant level. If it does not meet the norm, top up to the required level.

If there are no complaints about the operation of the heating system, we connect the cable to the heater tap, fix the casing with brackets. Reinstall the radio shelf.

Simple rules, the observance of which will prolong the life of the heater radiator

In order for the radiator to last a long time, you need to follow a number of rules:

When buying, you should not save and buy a low-quality unit. You should pay attention to the material of manufacture and the manufacturer.
Only high-quality liquids need to be poured into the system. Do not pour water and mix antifreeze with antifreeze. No grease or fuel must enter the system.
When it is idle in the warm season, when the heater is not used, at least twice a month, you need to open the stove tap so that the liquid enters the radiator. Thus, the unit will not dry out and the heater tap will not stick.