Question about Hoover U6437-900 / U6439-900 Windtunnel Bagged Upright Vacuum

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THE ROLLER WON'T GO AROUND. THE EXTRA ATTACHMENT WORK WELL, BUT THE ROLLER STOPPED GOING AROUND.

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HI There,

This is definitely a problem with your belts. This Hoover Windtunnel Self-Propelled models has a poorly designed belt system that frequently goes bad. Most customers will have to replace the belt once every 8-12 months, some even more frequently than that.

There are 2 belts on this machine, and it's recommended that you replace both belts at the same time. If you just replace one of the belts, this will cause the other belt to go bad quicker.

If you don't already have the replacement belts, here are links to these belts through us:
Hoover WindTunnel Self Propelled Belt Set (38528-034 & 38528-035)

Here's a helpful video that we've recorded that shows you step by step on how to replace these belts, as well as how to do the basic maintenance on the roller brush to prolong the life of the belts as long as possible.

How To Replace the belts on a Hoover Windtunnel Self-Propelled:

Please be sure to rate this repair helpful, or leave feedback if this video helped you fix the problem. If you're still having problems, please just use the comment field on the repair page and leave a little more specific information on what happened when you inspected the belts, and I'll be more then happy to do some further more advanced diagnosing for you.

By rating the repairs helpful, and leaving feedback, this ensures that Fixya experts continue to leave free repair solutions rather then just leaving premium answers, or repairs that customers pay to have answered. This is also really appreciated.

Chris Jones
GoVacuum.com

Posted on Apr 28, 2010

  • shirley chao Jan 31, 2011

    Thank you for the video showing how to replace the belts. I am a visual person, so this is most helpful. Also, I only replaced the flat belt. But with your recommendation, I will go out and purchase the v belt to replace also. Thanks again.

  • Andre fraissinet Aug 10, 2013

    Yes as Simone else posted if you replace both belts it should be good to go

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Replacing the belts is pretty straightforward, but the new one is too loose also, like the worn out one, and the brush still won't move. I am coming to despise this unit.

Posted on Apr 30, 2010

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After checking a myriad of answers to this particular question, I suggest you query "new actuator arm for self-propelled Hoover Wind Tunnel" it's part number 43143046. There's a very good video; hopet I'm allowed to post the link here. https://youtu.be/K722IsUxjYM
When new belts don't fix the problem of the brush no longer turning, it's often the actuator arm or the cable that connects to it.
One place I checked said that this problem occurs when machine picked up by propel handle it rips the nut and bolt out of idler arm causing it not to work.

Posted on Nov 07, 2015

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Yeah, it’s annoying that the manual doesn’t give more detailed instructions and drawings to help with this, because you do have to take the roller assembly apart sometimes to clean built-up carpet lint off the unit properly. If you don’t do this, I’d expect you’d have more problems.

I have a different model number Bissell Proheat than yours. Yours may have different parts or go together differently than mine, but I'll tell you how I do it on mine and you can try my way out and see if it helps you.

(In all cases where I use left vs. right or front vs. back, as when these terms are used with a car, I am facing the front of the Bissell. I am NOT behind the Bissell, where I would stand when cleaning carpet with it.)


Here's how I put it together. This takes much longer to describe than to do, once you figure out where everything goes and you get the hang of doing it!

Attach the left arm with the two silver rods (ONLY attach the left arm here-- leave the corresponding right arm, which looks like the left arm except it has no silver rods, off the bottom unit of the Bissell, for now) to the left side of the Bissell, with a silver screw with a built-in washer. The screw hole is on the back end of the arm and the arm dips down towards the front of the Bissell and holds the two brushes in position so that they can turn without striking the top of the underside of the Bissell or dragging on the floor.

Put a small silver washer on each long, silver metal post, where the roller brushes will go, and slide it all the way to the left.

Put the larger rubber belt around both metal posts, about halfway to two-thirds of the way down the metal posts.

Slide the brushes halfway down the metal posts and attach the larger rubber belt to the cog wheel on the left side of each roller brush. Then slide both roller brushes with the large rubber belt attached all the way to the left so that the cog wheels are against the inside of the left arm. As you move the roller brushes almost all the way to the left, you may be blocked from reaching the end until you carefully work the rubber belt around a plastic flange on the inside of the left arm, but do this and be sure the roller brushes are up against the inside of the left arm. Make sure the rubber belt is still on each of the cog wheels when the roller brushes are pushed all the way left. If you turn one roller brush, the other should turn, too, because of the belt attached to both cog wheels.

Put the small belt around the small cog wheel on the bottom unit of the Bissell behind the right end of the back roller brush, and also around the cog wheel on the right end of the back roller brush. (The right cog wheel on the front roller brush is the only one of five cog wheels without a belt, when everything is assembled correctly.)

Put a small silver washer on the right end of the silver rod passing through the back roller brush.

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If everything seems right, attach the two side covers. These are not interchangeable; the left cover only fits on the left. The short black screw goes in the back screw hole, and the long black screw goes in front.

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