How To Properly Oil A Furnace Blower Motor
- Locating the Oil Ports Most furnace blower motors come equipped with a self-oiling system, but if yours does not have this then you will have to manually lubricate it. ...
- Buying the Right Lubricant Buy non-detergent oil that is exclusively made for the furnace blower motor. ...
- Oiling the Furnace Blower Motor Lubricate the oil ports by applying a few drops on them. ...
- Blower Shaft ...
Full Answer
How often should a furnace motor be lubricated?
Furnace Maintenance If the motor has oil ports, it should be lubricated annually. Apply two or three drops of 10-weight nondetergent motor oil (not all-purpose oil) to each port. Do not overlubricate. If the blower shaft has oil ports, it, too, should be lubricated annually, following the same procedure.
What does a blower motor do in a furnace?
What is the Furnace Blower Motor, and What Does it Do? The furnace blower motor is a fan within the furnace that helps push out conditioned (warm) air out of the furnace. Its primary role is to create air motion that directs warm air outside the furnace and into your home. However, it also has two supplementary (indirect) functions;
How to check if blower motor is bad?
- Turn off the power to your furnace and remove the cover from the blower compartment. Inspect the blower motor and look for any damage. ...
- Bad bearings are another reason why a blower motor might be bad. ...
- Damaged motor windings are a little trickier to find. ...
- Rust formation inside the motor is another reason a blow motor may fail. ...
How to remove a blower motor in your furnace?
Remove the panel covering the blower motor on your furnace. Locate and remove the bolts/screws securing the motor housing to the frame. Disconnect motor wires from main unit. Slide out motor housing. Loosen the set screw next to the motor shaft. On the back side of the motor, loosen screws and capacitor leads.
Can I lubricate furnace blower motor?
Furnace Maintenance If the motor has oil ports, it should be lubricated annually. Apply two or three drops of 10-weight nondetergent motor oil (not all-purpose oil) to each port. Do not overlubricate. If the blower shaft has oil ports, it, too, should be lubricated annually, following the same procedure.
Where do you put the oil in a blower motor?
0:265:41How to oil the HVAC fan motor - YouTubeYouTubeStart of suggested clipEnd of suggested clipOkay we have two caps they should be in the upper quadrant. One right here and one back in there. SoMoreOkay we have two caps they should be in the upper quadrant. One right here and one back in there. So you got to pull each of these caps off. And oil inside them okay you need to pull this one cap.
How do you lubricate a blower motor bearing?
6:2015:36How to lubricate a furnace blower motor - YouTubeYouTubeStart of suggested clipEnd of suggested clipSo what you want to do is simply put some oil in the sponge. And do not overfill it because if theMoreSo what you want to do is simply put some oil in the sponge. And do not overfill it because if the oil gets into contact with the the windings of the motor. It can reduce their life so be careful.
How do you fix a squeaky blower motor on a furnace?
Worn-out blower motor bearings are a major cause of the furnace blower squealing. This happens as the bearings wear out from the continuous friction of the blower motor during operation. If this is the case with your furnace, the solution would be to replace the bearings.
Can you use WD40 on furnace motor?
Never use WD-40! Lubricate the bushings on both sides of the motor. Mike W. Take it out and lube it, and as was said, emphatically not with WD40.
Why is my furnace blower motor so loud?
Most likely the blower fan has become loose and is creating the sound by hitting against the blower house casing. A metal-scraping sound needs to be addressed right away and requires the attention of a professional HVAC technician.
Can you use wd40 on a fan motor?
With WD-40 Multi Use Product, lubricating your ceiling fan becomes easier. The all-purpose liquid allows you to clean your fan and ensure its smooth functioning within a few minutes. A couple of WD-40 sprays would make your ceiling fan sparkling clean and reduce friction within its body.
What is the best lubricant for bearings?
While some bearing applications use oil as a lubricant, grease is the lubricant of choice for 80 to 90 percent of bearings.
Can you grease bearings while it's running?
Regrease a bearing while the motor is running and hot, or after the motor is removed from service and the grease is still hot. Under operational conditions, the grease is less viscous. Ensure the grease gun contains the right lubricant for the bearings to be regreased.
How do I make my furnace blower quieter?
Simply replacing the blower fan bearings can eliminate excess noise. Check the fan blades – Although it isn't very common, the fan blade can bend. This will create unwanted noise from your blower. Oil the motor – Using 3-in-1 motor oil, lubricate the motor's axle.
How do I stop my furnace from squeaking?
Make Sure Your Furnace Is Clean Keep your furnace filters clean. Sometimes a high-pitched whistling or squealing can be due to poor airflow. Poor or low airflow usually comes from your blower struggling to push out air. One of the reasons that your blower could be struggling includes a dirty air filter.
Why is my furnace making a loud squeaking noise?
A high-pitched squeal coming from your furnace is usually the result of an issue with the blower. The blower in your furnace is powered by a motor, which has bearings that can wear out because of age or overheating. Overheating is usually caused by dirt buildup or a bad capacitor.
How do you lubricate a fan motor?
9:3413:49Service your FAN,Clean and lube your fan - YouTubeYouTubeStart of suggested clipEnd of suggested clipJust work it in. It only needs a drop or two. And put one more measure drop in i'm going to put itMoreJust work it in. It only needs a drop or two. And put one more measure drop in i'm going to put it on the back. Side okay so that was three little drops. Working that into the motor.
How do you oil a small electric motor?
3:096:24Amazing tip must see . How to oil sealed bearing motors. Why buy ...YouTubeStart of suggested clipEnd of suggested clipIt up and down spin. It really work it so that you get plenty of oil behind there. Okay if you'reMoreIt up and down spin. It really work it so that you get plenty of oil behind there. Okay if you're not in any hurry. I mean I would recommend just leaving in and really letting it saturate in.
What kind of oil do you use in an electric motor?
Mineral oils are adequate for most electric motor bearing applications. However, synthetic base oils may be required for extreme temperature applications or where longer regreasing intervals are desired. The thickener primarily serves as a carrier for the oil and prevents it from leaking out of the application.
How do you lubricate a window air conditioner fan motor?
Insert a drop or two of light (SAE 10) oil along the motor shaft where it meets the motor housing and the fan. Rotate the fan by hand to work the oil into the motor. Reassemble and reinstall the unit.
How many oil ports does a furnace draft inducer have?
If you have a serviceable blower motor, it has one or two oil ports. Lubricating a furnace draft inducer blower also includes the motor shaft where it enters the bearing collar of the blower wheel. Advertisement.
How to make a furnace last longer?
One way to help your furnace last for years is to lubricate the blower. There are two lubrication points on most draft inducer blowers, although there are sealed motors that do not require lubrication. If you have a serviceable blower motor, it has one or two oil ports.
Where are the oil caps on a motor?
Find the two rubber caps that cover the oil ports on the motor. The caps might be on the side near the shaft or on the top of the motor body . Pull the oil caps off the motor with your fingers. If there are no oil caps, chances are the motor is sealed and requires no lubrication.
What is the service panel on a furnace?
Depending on your furnace, the service panel simply lifts up and off the furnace, or it might have screws securing it to the furnace, requiring a Phillips screwdriver for removal.
What happens when a furnace blower motor is dirty?
The furnace blower motor comes equipped with fans. If these fans become dirty or lack lubrication, they start
Can you use all purpose oil on a furnace blower?
Buy non-detergent oil that is exclusively made for the furnace blower motor. Do not use an all-purpose oil, as it is not apt for this procedure.
What to do if blower has grease cups?
If the blower has grease cups instead of oil ports, remove the screw caps that cover the cups and fill the cups with bearing lubricant , which is available at automotive and hardware stores. When you lube the motor, you should also check the belts. Find out how to replace worn belts on the next page.
How to keep a motor running cool?
To keep the motor running cool, make sure it's clean. Most motors are permanently lubricated and sealed by the manufacturer and, therefore, require no further attention. Some motors, however, have covered oil ports above the bearings near the motor shaft. If the motor has oil ports, it should be lubricated annually.
What is a blower motor?
By Amy Rodriguez. A home's furnace uses a large barrel-like device called a blower motor that forces the warm air from the furnace to the rooms in a house. The motor itself turns a fan rapidly to move the air out of the furnace; the motor must remain lubricated with oil or the fan might seize, which will prompt a large repair bill in order ...
How many oil ports are there on a motor?
Visually locate the oil ports on the motor and shaft. They should be clearly marked with labels. Depending on the manufacturer, there might be two or three oil ports. Consult the owner's manual for specific port locations and quantity.
What is a Furnace Blower?
In a gas forced air furnace, it’s located in a box at the base of the furnace next to the air filter, where it draws return air through the filter. When switched on when requested by the thermostat and control board, the blower and motor push air across the burners in the combustion chamber where it gets heated, then the heat is transferred in the heat exchanger and blown out into the home’s ductwork.
How to prevent blower problems?
The single best thing you can do to prevent furnace blower problems is to have your furnace serviced by a professional HVAC technician annually. He will clean it to remove excess dust buildup, lubricate any moving parts that require it, and replace drive belt if required. It’s always best to have your furnace checked out before you need it – rather than calling us out on the coldest night of the year because your furnace isn’t running.
Why does my blower motor make a noise?
One of the more common problems in a blower motor is the bearings. Bearings surround the motor shaft, allowing it to run smoothly at high RPM with almost no friction. When the bearings go bad, the motor may make a grinding or screeching sound, or not run at all because of the friction preventing the motor from turning.
What happens when a blower blows?
When the blower malfunctions, the central heating and air conditioning system cannot performs its job.
How does a furnace work?
Other furnaces may use a belt-driven system, where the motor shaft connects to a pulley and drive belt, connected to turn the fan. Sometimes the belt can stretch or the tension can slip, preventing from turning the fan at the proper speed. Like a v-belt on your automobile, the belt should be inspected and adjusted regularly and replaced occasionally to ensure the system works properly.
Why does my motor smell like it's burning?
If the motor is packed with dust or dirt, or hasn’t been lubricated in a while (or ever!), the motor may overheat and cause an electrical short of mechanical failure, emitting an “unusual” odor or burning smell.
Can a furnace blower motor break?
Just like any other mechanical device with moving parts, the furnace blower motor is susceptible to breakdowns. Read on to determine if your blower motor is malfunctioning and when to call a professional HVAC contractor to examine, repair or replace it.
