Having problems with your Bissell 3750 Lift Off Bagless Upright Vacuum ?

Hi, There is a high pitched whirring sound coming from lower part of the vacuum. When I tilt it toward me (while standing in the normal vacuuming stance) the sound sometimes lessens for a minute or so. I have tried the following things: -cleaned the two sponge filters -emptied the dirt receptacle -removed the roller and cleaned it -cleaned the brushes -the belt is not ragged and does not seem floppy -checked all of the airways for clogs (including removing the wheel base) Can you help?

Answers :

Your looking for some dirt stuck in some thing you didn't check yet. with the roller out and the belt out of the way run it to see if it still makes the noise. if it does then you looking at the impeller or the motor bearing themselfs those bearings can be full of dirt or worn out If its running smooth with the belt off then the rooler bearings are next they may only squeel with the belt load on them but install it with the belt off and see if it turns smoothly, ( it should twirl with your finger ) if it turns hard keep cleaning and or replace the bearings, Then run it again to make sure it's not making the noise hten take it apart again and put the belt on and see if its fixed, It's possible to put the belt on backwards the brush should be turning as to pull the machine forward on the floor.
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