The VAZ 2107 interior heating system is quite reliable and durable. But, like any node, it is not immune from breakdowns. Most often, the heater radiator valve fails, the replacement of which is discussed in a separate article. We will consider the signs of a breakdown of the VAZ 2107 heater radiator and the method of replacing it.
Symptoms of a malfunction of the stove radiator VAZ 2107
A malfunction of the heater radiator VAZ 2107 manifests itself in two ways:
- The radiator is leaking.
- The oven does not heat up.
If you suddenly find a puddle of coolant under the feet of the driver or passenger, then there is a high probability that the stove radiator will need to be replaced. It is not worth rushing to change it immediately after detecting antifreeze in the cabin. First you need to make sure that it is the radiator that is flowing, and not the heater pipe or tap. By the way, the leak may not appear as a puddle of antifreeze under your feet. Sometimes the leak is not very large and the hot antifreeze flowing out of the stove radiator evaporates under the action of the air flow from the heater fan. In this case, the glasses begin to fog up during the operation of the stove. The cause of the leakage may be corrosion of the radiator material or damage by physical impact. To fix the leak, the radiator must be dismantled and then either soldered or replaced with a new one.
If, with a warm engine and an open heater tap, cold or barely warm air comes out of the stove, the reason is a clogged heater radiator. Most often, the radiator becomes clogged when the car owner tries to fix a leak in the engine cooling system by adding various “miracle additives” to the antifreeze, designed to deal with small coolant leaks. Yes, such additives can clog a leak, but they also clog thin radiator tubes in the same way. Also, the radiator can become clogged due to rust, poor-quality coolant. In this case, trying to pour other additives designed to clean the cooling system is useless. The radiator must be removed and tried to flush or replace it.
Removing the stove radiator VAZ 2107
- Drain antifreeze from engine cooling system. It is not necessary to drain the whole thing at all, it is enough that its level drops below the level of the heater radiator.
- Using a wrench or a screwdriver, loosen the two clamps securing the pipes of the heating system to the radiator.
- Remove the rubber seal located in the body hole.
- Remove the console (radio panel), which is fastened with self-tapping screws.
- Disconnect the heater control valve cable.
- Remove the heater fan by unfastening the 4 clips.
- Dismantle the heater tap drive rod.
- Remove radiator shroud.
- Unscrew the fasteners of the branch pipe that drains the antifreeze from the radiator.
- Remove the pipe and rubber gasket, which is located between the flange and the stove radiator.
- Remove the heater tap from the radiator.
Installing a stove radiator VAZ 2107
The radiator is installed in the reverse order of removal. To prevent possible leaks, it is better to change the radiator pipes and the clamps that secure them to new ones in advance. This is especially true for nozzles, while worm clamps can simply be lubricated and put in place.
Before pouring coolant, the heater cock must be opened. It is better to pour antifreeze into the cooling system through the engine radiator, after unscrewing the plug. After the radiator is filled to the neck, you should start the engine and let it work a little at high speeds. The flow of coolant from the pump should drive out any air bubbles that may have formed in the cooling system during filling. After that (if necessary), you still need to add antifreeze to the radiator, filling it and close the radiator cap and fill the expansion tank with antifreeze, focusing on the level mark on it.
At the end of the procedure, it is worth a little "drive" the car at idle to make sure there are no antifreeze leaks. Only after that the work can be considered finished.
