Question about Hoover U6437-900 / U6439-900 Windtunnel Bagged Upright Vacuum
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Posted on Jan 02, 2017
SOURCE: Hoover wind tunnel upright self
Most likely the flat belt has stretched enough so as to not turn the pulley that in turn turns the brush roll using a V belt. Also there is a small idler wheel, if hook up, then it won't engage the V belt.
Posted on May 20, 2008
that is the correct belt what you dont see is a tension pulley that when the handle is released pushes on top of that belt giving it the tension it needs. try replacing the other belt, even if it isnt broken it could easily be stretched out ( all belts of that type should be replaced every year - even if you didnt use the machine at all ). if that doesnt work that tension pulley could be damaged you would need to take the bottom of the machine apart to fix that.
Posted on Sep 18, 2008
Well, the V belt is normally fairly slack until the handle is dropped below 45 degrees, which is when the belt tensioner assembly drops into place. If turning the brushroll by hand when the vacuum is in this position fails to rotate the self propel pulley, the tensioner is not functioning properly and will need to be replaced.
Also ensure that the brushroll can spin freely by hand, as these have a tendency to melt at the ends and seize the brushroll. I have also seen the groove that the v belt fits into melt itself out of round, which can cause the same symptom as you're describing.
Keep in mind as well that while the rubber belt may appear to be ok, it does have to be replaced every 3-6 months whether it breaks or not. Even though it hasn't broken, if you were to hold it up against a new belt, you would see that the old one has stretched significantly: which can decrease the machine's ability to rotate the self-propel transmission pulley and, in turn; the brushroll.
Feel free to contact me with any further questions.
Posted on Oct 02, 2008
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