Stove motor: repair, replacement

2024 Author: Erin Ralphs | [email protected]. Last modified: 2024-02-19 11:42

The purpose of the stove motor is to increase the efficiency of heating and air circulation in the cabin. The quality of heating is significantly reduced when it breaks down. There is also the possibility of extraneous noise, which irritates the driver and distracts attention. The way out of the situation is replacement or repair, and since it is not difficult to remove the stove motor, you can not go to a car service and do all the work yourself.

What to look out for

Finding the cause is the first step in the work. You need to start the car and listen to the sounds that appear when you switch the device to different speed modes. If the stove motor does not work, then it is easy to determine by the absence of sounds and any actions after turning on. The resistor in the switch can also cause the fan to only start at speed 3.

Possibleproblems

There are several other faults that cause heater failure:

• Poor-quality connection in the mounting block. This problem occurs in many cars, regardless of the country of manufacture, but it has an easy solution in the form of pulling a contact or stripping a group of contacts.
• Fuse broken. The integrity of the supply device can be broken, and a short circuit causes a malfunction of the entire structure. At the same time, it is worth remembering that the heating of mirrors and the illumination of the glove compartment can be powered by the same fusible link as the fan. Accordingly, verification of other elements is also required.
• Blower on only in the third operating mode. Having understood the design, it is easy to understand the cause of failure. At the first two speeds, additional resistance is connected. Direct switching is carried out in the third position. That is, if you replace the resistor, the problem will be solved.
• The ignition relay may stick in some cases. In this case, the stove motor starts to work only after the engine is completely warmed up. If such a property is noted, it is worth checking the control device for a malfunction and replacing it with a new one if necessary.
• Fan failure. If it does not respond to switching on, and the voltage from the switch continues to flow, we can talk about a poor-quality connection on the "minus".

Switch failure

The switch itself often causes problems. Atusing a standard light bulb with soldered wires, you can check this device. In order to provide free access to it, the main part of the console is turned off. When the engine is on, one wire is set to "minus", the other touches all speeds separately. When the lamp is activated on each element, there is no doubt that the switch is working. If there is no reaction, the wire is put on the "plus". The lamp should light up, and if this does not happen, the fuse may be broken, or the stove motor has an open in the circuits.

How the system works

It is worthwhile to first understand the principle of the system. Setting the temperature to the desired level is carried out by closing and opening the tap of the heating element. At the same time, a heat source enters the radiator - heated coolant, the temperature of which, when the engine is warm, reaches 95 degrees.

The running speed is set by switching the speed mode. This has a direct effect on the amount of cold or hot air entering the car interior. After that, the air supply by panel dampers varies, they also regulate the direction, for example, to the passenger compartment or to the windshield.

Replacing the stove motor

If the fan does not work or noise and creaking are noted, you need to change it. To get started, prepare a tool: a ratchet handle, a Phillips screwdriver and a socket.

The screws are loosened,used to secure a plastic trim next to the windshield, which is then removed. It will interfere with work, as well as the hood seal.

The protective casing is pulled out, which hides the stove motor, and the bolts securing it to the machine body are unscrewed.

From the driver's side in the cabin, you need to find the fan wire with a positive value and move it away. Next to it is a negative wire, the fastening of which is removed using a head of a suitable size or a handle with a ratchet. There are no other voltage relief options, since the device is distinguished by a direct method of soldering the wiring. Before changing the stove motor, it should be twisted to simplify the process. With the knowledge and time, it can be repaired. Otherwise, a new device is mounted and all items are returned in reverse order.

Stove motor: repair

First of all, it is worth checking for foreign objects in the duct, as they can contribute to noise when in contact with the impeller. If they are missing, you will have to disassemble the electric motor. The disassembly process has a similar principle for different kinds of devices.

You need to pull out the anchor, for this, access to the brush assembly is provided by removing the fan cover. The bushings located on the cover and the body are cleaned and lubricated.

The bearings are thoroughly washed in kerosene, the anthers made of rubber are removed from them first, andlubricated with lithol. Such an algorithm often allows the bearings to work again.

If necessary, they can be replaced with new ones. At the same time, seats are marked on the shaft before removal. To remove, you can use a screwdriver or a core, but a specialized puller is the best option.

The new element is pressed in with a hammer or a piece of wood, it is advisable to apply machine oil to the stem.

It is advisable to clean the collector from possible oxidizing phenomena before assembling the stove motor. Due to this, the electrical conductivity with brushes will improve. Lubrication of the fan with lithol will provide easier installation in a plastic cup.