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

How to Identify and Fix Common Vacuum Problems ?

Our sources include academic articles, blog posts, and personal essays from experienced Vacuum Technicians :

Because vacuum manufacturers do not share a standardized naming system for vacuum belts, using your vacuum`s model number is the best way to ensure an accurate belt order.
An easy way to determine belt size is to simply “add 2″ to your off-the-rack trouser size. For example, if you wear a 36” waist trouser, then a 38 belt size will be a safe bet. Most will find this simple formula works best for pants worn at a traditional height–close to the natural waistline.
V-belt cross sections can be identified by their top width and depth dimensions. For example, a v-belt with a top width of 21/32” and a depth of 7/16” is a “B” belt. You can also use our Browning Belt Rule that includes a gauge to help easily identify belt type.
Underneath the cleaner is a brush bar that is driven by a rubber belt. It spins around sweeping and beating the dirt out of the carpet and up into the cleaner. The belt will stretch and wear out so it should be replaced once per year or sooner as a precaution if you feel the cleaner is not sweeping up effectively.
For most cars, the belt will be located at the front of the engine. When checking the belt, always make sure the car is switched off and cooled down. Your belt should be inspected with each oil change. Mechanics will normally check the belt to ensure no significant damage has occurred.
The serpentine belt goes by a couple of different names: accessory belt and drive belt. The belt is long and snakes through several pulleys. That`s why it`s called a serpentine belt. You can find the serpentine belt on the front or side the engine.
There is no one-size-fits-all belt sizing formula. Belts fit differently depending on user sizes and gear combinations. For instance, gun belts measure different standards than a regular size guide due to the flexibility of various holsters.
There is no one-size-fits-all belt sizing formula. Belts fit differently depending on user sizes and gear combinations. For instance, gun belts measure different standards than a regular size guide due to the flexibility of various holsters.
First two digits indicate top width in sixteenths of an inch. Next two digits designate sheave angle, in degrees, that the belt is designed to fit. Last three or four digits indicate pitch length to the nearest tenth of an inch. Part numbers are derived from industry standard number.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

Hoover WindTunnel Self-Propelled V Belt
ANSWER : I had this same problem with the V belt on my Hoover Vaccuum..
.There are three (3) basic things that will cause the brush roll not to spin..
.1. When handle is upright, brush roll is OFF..2. When switch is set for HARD surface, brush roll is OFF..3. Broken/worn FLAT belt or V Belt, brush roll will not spin.
.I noticed that the brush roll was not spinning when my vacuum was set for CARPET. After removing the cover I noticed that the V belt was loose, I thought the belt was worn so I purchased a correct replacement belt and installed it, but the new belt was also loose and when I turned the large flat belt pulley it did not turn the V belt pulley at the same time..
.I double checked the surface setting and I had the vacuum switch set for carpet, but still when I released the handle out of the upright position the brush roll would still not spin..
.My aggravation finally led me to this posting on FixYa’s website..
.The first thing I did was checked the screw to the left of the V belt as suggested by ejmjr5 and this did nothing to solve the problem or create more tension on the V belt, even when the upright handle was not in the upright position..
.After playing around with the surface setting control switch/nob I notice that when I moved the switch out of the HARD surface setting and over to CARPET, I had thought that the switch was set for CARPET as it visually appeared, but I was not pushing the switch over hard enough to click it into the CARPET setting mode..
.VOILA, the brush roll now spins correctly even though the V belt seams to be too loose for the pulley..
.You really have to force the switch into the CARPET setting. Be sure that you hear the switch/nob click into place..
.Now you can effectively clean up after that hangover of a party!.

I’m using (or WAS using) a Eureka ”the boss” model 8803. The belt broke, no biggie, so I replaced it with a Eureka model U belt, the problem is when I put the new belt on and turn on the vaccuum, the belt breaks again. I am also having trouble getting the brush roller to fit right when the belt is in place. I can’t find any sharp edges that would cut the belt,nor can I find where any small bits may have broken. Anyone have a solution for me?
ANSWER : First, make sure you have the right belt, second, i am thinking that you are not lineing the roller up right, it will only fit one way. look at the ends of the roller and the grooves where it slides in, you should be able to see clearly how it goes.

Changing belts I cant figure out how to replace belt on my hoover cleaner model u4537-910
ANSWER : Turn vac over, remove the 4 screws holding the bottom plate covering the brush roll. There are 2 belts, one is a V belt ( 38528034) for the brush roll, the other is a flat belt (38528035) that goes from the larger pulley and the motor shat, put it on the motor shaft then stretch it to go over the pulley.

Hi I have an electrolux “The Boss” hand held vaccum cleaner. I cannot find the instructions and am having problems changing the belt. It is model number Z57A. Product Number 900-250-006. It is the first time I have had a problem. I only use it occasionally for my caravan. So cant find the instructions and cant remember how to change the belt. Please help
ANSWER : You need top lace belt on brush roller and re[-assemble by putting plastic cover on which is retained by 2 recessed philips screws.. Prize off triangular coverat fornt.behing that you should see the belt lying loose.You need to get a blunt object to twist and push belt ovet the motor shaft. You may get it on in wrong direction and if you do,loosen off belt and twist the other way.

Belts I have a Hoover self-propelled windtunnel, purchased 6-04. It gets light use. I have replaced the v belt 3 times, once under warranty, and it must be replaced again. It appears to be in very good condition, but is stretched too big. When I purchased 2 v belts a year ago, one was already too stretched,but when my Dad took it back, the salesman put it on another model and said it was fine (Dad never mentioned this to me). Is there a way to adjust the vacuum to hold the belt tighter? Do t
ANSWER : It is the flat belt that gets stretched and should be replaced at least every 6 months. The V belt wears down so it won’t it right in the brush roll V. Maybe the belt tensioner wheel has a problem, sometimes they get hook up and won’t engage the V belt. Check the brush roll also, if where the V belt rides in is covered up with belt, replace it. There is no adjustment, doesn’t need it if everything is working the way it should.

Windtunnel belt I have a new Hoover Windtunnel canister. The belt keeps coming off. It happened a couple weeks ago (several times after putting the belt back on) so I assumed I might need a new belt as it might have dried out at the store. I ordered new belts and today I used it for about an hour and the belt came off again, twice. There doesn’t seem to be anything to hold the belt on the stem as it seems to slip off. I have tried it centered, to the left and to the right….can you help. I am v
ANSWER : I’ve successfully used a compatible belt – Royal 104425001 .It’s still new, but for the time being at least – it works.

The belt on my vacuum cleaner model 6596 bissel powerforce bagless turbo keeps breaking. As soon as I put on a new belt and start it up the belt snaps. It is the durabelt meant for this vacuum model. Also, my son has been having the same problem with his. He has the same model and same belt. This problem is occurring even after a thourough cleaning.
ANSWER : I would guess you aren’t centering the belt correctly, thus it’s edge is caught between the brush and another solid object, causing the breakage.
.When you get the belt on the the brush and the brush back in place, turn the brush a few times by hand to make sure it’s not catching on anything. After you get the powerhead put back together, do this again. It’s a common problem if the powerhead isn’t assembled correctly.
.Here’s a video clip from the Bissell site demonstrating changing the belt.

Is there any way to repair or replace the belt GUIDE on the inside of the belt compartment of a ’97 Hoover Wind Tunnel (not self-propelled)? It became twisted when a belt broke and now the belt rubs against it and sounds really weird, and I’m sure new belts will continue to break.. This guide is a long piece of molded material (part of the compartent wall) to keep the belt from coming off the pulley. It also had a sort of metal clip on it. It was loose and I took it off because of the way the pa
ANSWER : Honestly you should take it to a vac.shop they can fix any vac.