Hoover U6437-900 / U6439-900 Windtunnel Bagged Upright Vacuum\015 My Hoover upright vacuum, model U6476-900, has a front agiator belt that is loose and slips on the agiator so it will not turn under a load. I replaced the beld, 385280-34, but its the same problem, too loose. Is there a tension adjustment on the tension roller? How is this tension problem corrected?\015

How to Identify and Fix Common Vacuum Problems ?

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Belt tension adjustment is an iterative process that requires removing the Drive Belt for each incremental tension adjustment. The process entails: making a belt tension measurement, removing the Drive Belt from the motor pulley, changing the motor position to adjust the belt tension.
Belt tension is measured by plucking the belt span while holding a sensor close by. Belt tension is adjusted until the belt span frequency, or measured tension level is within manufacturer`s recommendations.
Belts that are too tight put an excessive load on pulleys, shafts, and bearings. Excessive belt tension will also wear out a belt quickly. Proper belt tension is 1/2 inch of sideplay both ways. Press down on the belt midway between pulleys and observe the travel.
A loose drive belt can compromise your vehicle`s ability to power accessories like power steering, air conditioning or your alternator, or could possibly even cause internal damage to the motor.
Put it to the Flex Test

Your serpentine belt should be bendable without creating creases in the belt. If you have the belt off the engine, flip it so the toothed-side is exposed and bend the belt. If you see even minor cracks or stretches, it is time for a new one.

An over-tightened belt can burn out any bearing that the belt rotates on, including alternator, power steering pump, A/C compressor, idler pulleys, etc. An over-tightened timing belt can ruin any pulley bearing it is connected with.
Replacement Brand Designed To Fit Hoover Wind Tunnel Belts 13″ and 15″ Models, Fits: All Wind Tunnel Non-Self Propelled Machines, 3 Belts in Pack.
Description. Package of (1) 38528-034 roller brush belt and (1) 38528-035 power drive belt for Hoover WindTunnel models with the self-propelled feature. Replace these belts every 6 months to ensure optimum performance.
iFrictional resistance = µRN + µRN = 2µRN = 2µR/2cosec α= µR cosec α = R ⋅ µcosec αSince in flat belt frictional resistance is equal to µR and in case of V-belt µcoseca X R So Ratio of Tension in V-Belt:: T1/T2 = eµ.
Typically a damaged belt tensioner will not impact vehicle performance. It would cause the serpentine or drive belt to wear prematurely or to squeak – but not cause the acceleration issue.
If a belt is not tensioned properly, it will ride too loose or too tight on the pulley. A belt that`s too loose on a pulley will cause slippage, which leads to heat build up from friction. This heat will damage your rubber belts and cause the belts to crack and break.
If you don`t vacuum your carpet, the dirt will break down carpet fibers and create a breeding ground for dust mites and bacteria. In addition, your home will begin to smell musty from the dirt, mites, and other organisms settling into the fibers.
Yes. The car is propelled by the engine through the transmission. The absence of drive belt won`t stop a car from moving from its stationary position but it will affect the operation of the engine which will cause it not to operate for long.
Misalignment and bearing wear can cause the belt to track off-center and will cause it to wear quickly. Check the tensioner and idler pulley bearings by removing the belt and spinning the pulleys by hand. All pulleys should turn freely with no binding, roughness or wobble.
The major types of vacuum belts are determined by their different shapes. As vacuum designs have improved over the years, new belt shapes have been developed to increase both their durability and their ability to transfer power from the vacuum`s motor.
Check that the brush bar is clean and not damaged

If the cleaner becomes noisy or starts vibrating, it may be because some debris has got tangled around the brush roll or agitator situated in the bottom of the cleaner.

If too much hair, string, or lint is caught in the brushroll, the brushroll can get stuck. If the brushroll is stuck, it will put too much strain on the belt and may cause the belt to break. Remove the brushroll and clean out any debris from the bearings. After replacing the brushroll, make sure that it turns freely.
We know that the force of tension is calculated using the formula T = mg + ma.
Belt tension is the force that keeps the belt in contact with the pulleys and prevents it from slipping or sagging.
How you tension a belt at installation will determine how long the belt will run. Too little tension results in slippage, excess heat, and premature belt & pulley wear. Too much tension results in excessive stress on belts, bearings, and shafts.
How you tension a belt at installation will determine how long the belt will run. Too little tension results in slippage, excess heat, and premature belt & pulley wear. Too much tension results in excessive stress on belts, bearings, and shafts.
If a belt is not tensioned properly, it will ride too loose or too tight on the pulley. A belt that`s too loose on a pulley will cause slippage, which leads to heat build up from friction. This heat will damage your rubber belts and cause the belts to crack and break.

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!.
.Burp!

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 original belt on my upright Kenmore Progressive broke and I replaced it with the spare that was in the vacuum. The vacuum and spare belt are about 10 years old. Then the spare broke after one vacuuming session and there was a burning smell coming from the vacuum. I ordered new belts and replaced it with the new belt. It seems to be working fine with no smell. I checked the belt after I vacuumed the family room and although it was in tact, the belt was very hot. Is that normal? Should t
ANSWER : The belt heats up due to the friction, as well as being in contact with the shaft of a hot motor. It is normal.

Hi my proheat bissell 7901 stopped pumping water to the floor, but it pumps water from the hand hose. I read the manual and followed how to check belt and the flat belt on right side of shampooer is fine and I turned on and it turns and so do the brushes at the bottom of the machine. I was reading online and I guess there’s two belts on this machine? where can I find the other belt to see if it needs replacing. I guess it’s a ribbed belt? that is the water pump belt?
ANSWER : Just taken ours apart with the same problem… found it was caused by the 2 halves of the main casing coming apart in the area where the upright pedal release is. I found this to be due to the upper casing having broken in 2 places – the bottom of the screw wells..This means that the water tank cannot exert sufficient pressure on the valve to release the water..Only solution is a new top cover assembly

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.

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.

Belt tensioner overheated and doesn’t keep belt tight enough
ANSWER : Looking at the owner manual, there is no tensioner assembly.
If the motor is fixed in place and not loose, then you either have the wrong belt, or the brush roller is not properly installed, or the brush roller is worn out where the belt goes around the brush roller.

The last time I sewed with my Necchi the tension was fine. Today when I threaded my needle, the thread felt tight in the upper tension dial. I tried re-threading the machine several times, but it didn’t help. Now the parts of the tension dial are all loose and wobbbly and I have no upper tension. Doesn’t matter what the dial is set on. The tension dial appears to be broken, but I don’t know how that could have happend since I store it in a case.
ANSWER : I found this thread (no pun intended):
.
.http://www.fixya.com/support/t2902978-need_replace_upper_tension_dial
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.If it helped, be sure to acknowledge the thread’s author (I just searched for it 😉 ).