If the motor has oil ports it should be lubricated annually.
Furnace blower motor oil ports.
Blower shafts on the furnace blower motor could have additional oil ports.
If you have a serviceable blower motor it has one or two oil ports.
Oil ports will be obvious often capped with a hinged cap or a hole facing up marked oil on the steel body of the motor.
I show where the oilers are on the blower motor of the furnace.
If the blower shaft has oil ports it too should be lubricated annually following the same procedure.
There are two lubrication points on most draft inducer blowers although there are sealed motors that do not require lubrication.
Apply two or three drops of 10 weight nondetergent motor oil not all purpose oil to each port.
Or send us some sharp photos of all sides of the motor and we ll comment further.
Do not apply too much oil as over lubrication can lead to other complications.
They should be clearly marked with labels.
Below we illustrate three electric motors all happening to be found in heating furnace blower compartments.
I couldn t tell by the picture.
Oiling the furnace blower motor.
Unless the motor has oil ports at either end they are sealed bearings and can t be oiled.
It is imperative to lubricate the furnace blower motor once in a year for smooth hassle free operation.
Locate them and lubricate the ports with the same quantity of oil.
I m using 3 in one sae 20 motor oil for electric motors http amzn to 2k63xwl if your motor has little yellow sometimes black removable plugs you can o.
An oil port is on both sides of the motor.
The observation port allows monitoring of the inside of the heat exchanger during the operation of the furnace.
Visually locate the oil ports on the motor and shaft.
Depending on the manufacturer there might be two or three oil ports.
Cleanout and observation ports as shown in figure 12 2 an oil furnace typically is provided with one or two cleanout ports to allow access to the heat exchanger for cleaning soot removal.
Lubricate the oil ports by applying a few drops on them.
Step 2 inspect the blower motor for the oil ports which are located directly on the side and are sticking upwards.
Lubricating a furnace draft inducer blower also includes the motor shaft where it enters the bearing collar of the blower wheel.
Going by past experience inducer motors rarely if ever have oil ports.
