Replacing the stove fan on a VAZ 2107

If the heater fails during a trip with the owner of the VAZ 2107, this will not lead to anything good, especially when it is thirty degrees below zero outside. Of course, in such a situation, you can get home, but such a trip will be remembered for a long time, and the memories will not be pleasant. Most often, the heater fails due to a malfunction of the stove fan. This is a detail that the owner of the car may well change with his own hands. Let's try to figure out how best to do this.

Appointment of a heating fan on a VAZ 2107

The main task of the heater fan is to blow through the hot radiator of the stove and, through special air ducts, to pump warm air into the interior of the VAZ 2107 and heat it up. The fan is made of ordinary plastic and is driven by a small electric motor.

Both the plastic and the electric motor are not very reliable, so car owners have to carefully monitor the condition of these parts so that they do not fail at the most inopportune moment.

Furnace fan location

The VAZ 2107 heater fan is located under the central panel, behind the heater housing.

That is, to get to it, the car owner will have to disassemble the central panel of the car, and then remove the stove casing. Without these preliminary operations, the replacement of the heater fan is not possible.

Causes and signs of a heating fan breakdown

The list of reasons why the VAZ 2107 stove fan may break is not long. Here:

malfunction of the blades on the impeller. As mentioned above, the stove fan impeller on the VAZ 2107 is unreliable, as it is made of very fragile plastic. Even worse, the brittleness of this material increases with cold. So do not be surprised if the impeller breaks in the most severe frosts;

motor breakdown. The impeller is mounted on a small rod, which, in turn, is attached to the electric motor. Like any other drive, an electric motor can fail. This usually happens due to sudden power surges in the car's on-board network. This can also happen due to the fact that the engine has simply exhausted its resource (usually the brushes that remove the load from the rotor windings fail).

If the brushes of the VAZ 2107 engine are worn out, the fan will not rotate

The signs by which you can recognize the failure of the heating fan are also well known. Let's list them:

• After turning on the heater, the fan does not make noise. This means that the motor is broken or running but the power supply is bad. This usually happens due to a blown fuse responsible for this section of the car's on-board electrical network;
• rotation of the heating fan is accompanied by strong rattling or creaking. This means that part of the blade has broken off the impeller and hit the inside of the furnace shell;
• the stove fan spins with a loud continuous squeal that gets louder as the speed increases. The source of the squeak is a sleeve in the fan. Over time, it wears out and a backlash appears in the fan, due to which a characteristic creak occurs.

About the lubrication of the heating fan VAZ 2107

In a word, lubricating a fan on a VAZ 2107 is a pointless exercise. Now more. All heater fans on the VAZ 2107, regardless of the year of manufacture of the car, are equipped only with plain bearings. As mentioned above, the bushing wears out over time and begins to squeak piercingly. If the play due to bushing wear is small, then the creak can be eliminated with grease. But this is only a temporary measure, which will not lead to anything, because very soon the lubricant will be developed, the play will increase, and the fan will creak again. Therefore, the only rational option in this situation is to replace the stove fan with a new one. It is also desirable that the new fan be equipped not with a hub, but with a ball bearing.

Speaking of fans with ball bearings. In recent years, finding them for sale has become extremely difficult. What caused this is hard to say. Perhaps this is due to the venerable age of the machine, which has long been discontinued. Therefore, car owners in search of the necessary spare parts increasingly have to go to a variety of tricks. For example, my driver friend decided to order a kitchen fan ... on Aliexpress! When I found out, I didn't believe it. In response, the man took out his smartphone and showed the auction lots with fans. Where did the VAZ fans on the Chinese online auction come from is a big mystery. But the fact remains. By the way, they cost there only a third more expensive than domestic ones. Probably, this is an extra charge for delivery (although the site proudly claims that delivery is free). In our country, the parcel goes on average one and a half months.

Replacing a heating fan with a VAZ 2107

Before you get started, you need to select everything you need. Here's what we'll need:

• screwdrivers (cross and flat);
• curly braces (a set of open and trailing curly braces);
• new stove fan for vaz 2107.

Sequencing

First you need to perform a preparatory operation - remove the gear lever. On the VAZ 2107, it creates serious problems when dismantling the stove fan. So you need to take the radio out of its niche. It is attached with two screws. When removing the radio, do not forget about the cables behind it. The device smoothly slides out of the niche, thanks to which you can reach the gap between the radio and the front panel and remove all the blocks with cables located on the rear cover of the radio.

1. Now, using a Phillips screwdriver, the shelf located in front of the passenger is unscrewed. It is fixed with four screws.
2. The shelf in the cabin of the VAZ 2107 rests on only four self-tapping screws
3. After that, the console with the cigarette lighter is removed. The lower left corner is carefully pry off with a flat screwdriver and leans back towards itself until a characteristic click. The same is done with other corners, after which the panel is removed from the niche. To remove the VAZ 2107 cigarette lighter panel, it will need to be carefully pry off with a screwdriver
4. At the back are cables that are manually disconnected from the panel. Before disconnecting the cables, it is highly recommended to put some marks on them so that nothing is mixed up during reassembly. In the upper part of the niche there are two fixing nuts for 10. It is most convenient to unscrew them with a socket head.
5. It is more convenient to unscrew the nuts on the casing of the VAZ 2107 with a socket head by 10
6. Above the panel with the cigarette lighter there is another panel with buttons. It is pryed from below with a flat screwdriver and bent. Below are two screws with washers that are unscrewed with a Phillips screwdriver.
7. To get to the screws under the buttons, you can simply bend the panel with a screwdriver
8. Now the cigarette lighter panel is completely free of fasteners and can be removed and placed on the passenger compartment floor.
9. After removing all fasteners, it is better to put the panel on the floor, to the right of the gear lever
10. The next step is to disconnect the air ducts. They are held in place by flat plastic latches that are easily pry off with a flathead screwdriver.
11. Air duct latches vaz 2107 are made of very fragile white plastic
12. After removing the air ducts, access to the VAZ 2107 heater opens, or rather to its bottom. It has four steel latches: two on the left, two on the right. With certain skills, the latches can be bent with your fingers. If it doesn’t work out, you will have to use a flat screwdriver again (it should be noted right away that you need to handle the screwdriver as carefully as possible, since when the latches are bent, they fly out of their sockets and fly away to nowhere).
13. Extreme care must be taken when bending these latches.
14. Access to the electric motor and fan is open. The motor, with the fan attached, is held in place by two steel latches located at the top and bottom. It is impossible to bend them with your hands, so you cannot do without a screwdriver (besides, the tip of the screwdriver must be very thin and narrow, since the other one simply will not enter the latch groove).
15. It is better to open the latches of the VAZ 2107 warm-up engine with a long and very thin screwdriver
16. The motor with fan without mounts is removed and replaced with a new one. After that, the VAZ 2107 heating system is reassembled.
17. The stove fan VAZ 2107 is released from the mounts and removed along with the engine

Video: we independently change the stove fan on the "classic" (VAZ 2101-2107)

important points

When replacing a heater fan with a VAZ 2107, you need to remember several important nuances, the neglect of which can bring all the work down the drain. Here:

• when bending the plastic latches on the central panel and the cigarette lighter panel, no special efforts are needed, since these latches are made of the same fragile plastic as the heater fan. They break very easily, especially if the repair is done in a cold way;
• remove the motor after opening the latches must be very careful. Behind the wires with contact pads. If you carelessly pull on such a wire, its terminal block may break, since it is so thin. It is impossible to find this item for sale. Therefore, cracked plastic parts will need to be glued with universal glue. All this can be avoided if you act carefully and slowly.

Therefore, it is quite possible to change the stove fan on the "seven" with your own hands. This can be done even by a novice driver who has some understanding of how car heating systems work. All you have to do is be patient and follow exactly the instructions above.