Troubleshooting loud vent hood fan


  #1  
Old 09-08-18, 12:13 PM
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Troubleshooting loud vent hood fan

Hello

I have a rental house with an oven vent fan that just started making a slow grinding noise after it is turned off and spins down. It might be grease build up or something.

How would I open the motor box in the exhuast fan? I looked under the vent fan and only see one nut. I'm assuming I unscrew this nut and pull the motor down? I thought I could get a look at the motor by pulling out the mesh screen, but it doesn't seem like it comes out without bending.

I want to ask, so that when I start taking it apart I can put it back together right away since it is a rental.

Here are photos, with a highlight on the only nut I see.

Thank for advice on getting to the motor.
 
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Old 09-08-18, 12:48 PM
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You should be fixing it only if your rental agreement allows or requires you to do it. Otherwise you should call your landlord to fix it.

BTW: Removing that nut is not likely to be the way to do it.
 
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Old 09-08-18, 12:56 PM
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Hi John. Good question. I am the landlord.

How might I get in there to try and fix the noise?
 
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Old 09-08-18, 09:14 PM
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That housing is pretty much tack welded together. They don't usually come apart.
Remove the metal mesh filter. The fan should be visible above it.
It should be held in with two screws and plugged in.
 
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Old 09-09-18, 08:32 AM
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Usually the mesh screen has spring tabs on one side that compress to remove the screen. Look to see if one of the flanges is wider than the other. That will be the side with the springs. Push the screen toward that side and pull the opposite side down. Usually there is also a wire "pull tab" that is used to do that but if the screen is installed upside down the tab will not be visible (or it has been removed.)

If the above does not work look closely at the small square openings on the sides of the housing. They may be areas where you can compress the screen frame with a screwdriver to release it.

As PJ says once the screen is out the motor and its mounting will be obvious.

Looking at the pictures (which I could not see when writing above) it looks like the wider flange is against the wall (as expected). Inserting a screwdriver at the front and prying that edge down may pop the screen out.
 

Last edited by 2john02458; 09-09-18 at 08:35 AM. Reason: additional info
 

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