Forum Discussion

boston_blacky's avatar
Jan 09, 2016

Bathroom fan motor BVD0218-00 question.

When I push up against the bottom of our Ventline BVD0218-00 motor (one finger thru the screen) the bathroom fan starts to turn. Does this mean the motor is still good and there's only a poor connection?

Or should I replace the small motor?

p.s. the fan does not work unless pushed on - as stated above!
  • Yes there is probably close connection but it could be something internal. Usually when you take it down if it ain't readily apparent what the problem is it's best to just replace it.
  • I've got to agree that you will need to remove the motor and fan blade and see if you can use a pen oiler to place a drop of oil on the bushings. Many of the motors have concealed bushings so replacement is most likely what you will need to do. The cost for the motor is about $34 US. It is not likely that touching the motor or turning the blade would fix a bad connection. The odds are it is a dry bussing in the motor. So good luck and keep warm.
  • yes, it probably is a loose connections, on the fan as well.
  • rhagfo's avatar
    rhagfo
    Explorer III
    D.E.Bishop wrote:
    I've got to agree that you will need to remove the motor and fan blade and see if you can use a pen oiler to place a drop of oil on the bushings. Many of the motors have concealed bushings so replacement is most likely what you will need to do. The cost for the motor is about $34 US. It is not likely that touching the motor or turning the blade would fix a bad connection. The odds are it is a dry bussing in the motor. So good luck and keep warm.


    That or you could replace it with a better unit at only about twice the cost of the motor that moves a lot more air.

    Vortex fan upgrade
  • It probably needs oil. These motors have no torque and it doesn't take much to get them to stop spinning.

    It is possible that the thrust bearing is out. That is why you have to push up on it. Once it starts spinning the blades make it fly and the bearing is no longer needed. Oil might help, or it might not.

    After that it depends on how handy you are and how much of a tightwad you are. If you are a big tightwad like me then I have taken these little motors apart and built new bearings out of what ever I find handy that will work. Sometimes small washers or sometimes tin cut out of a beer can will do the trick.

    What ever it takes to save a buck I will do.

    Besides, the newer it is the cheaper it's built. If this motor lasted 10 years you know the next one will only last 5. The one after that 2.5 and so on.
  • I would also be taking a look at the commutator and brushes. I once fixed a motor for driving a car window up and down. There were black lines between commutator segments instead of gaps. It was carbon from the brushes mixed with dirt. Scraped it out, cleaned with electric contact cleaner and rubbed dry. Still working several years later.

    Could be a poor wire connection, too.

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