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

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How to replace slider knob for roller on/off?

Tried to switch hard/carpet knob on 6425-900 when handle was down --> black plastic knob broke off. But the metal post is still sticking up and works if I slide it for hard floor or carpet. I got a new knob to put on, but how does it go on? Metal post wants to slide down and disappear into housing if I try to push knob on. Help!

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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Buffalo12980
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SOURCE: hoover windtunnel U6439900

please go to the hoover vac store using the following link. you will have your exploded diagram for the machine and any spare parts you might need. http://www.thehooverstore.com/U6425.html

Posted on Sep 15, 2007

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  • 1 Answer

SOURCE: Carpet Height Adjusment

In addition to the tab that contacts the bottom of the slider, there are 2 protusions on the adjustable wheel plate that move through holes in the housing, but only when the handle is tilted to begin vacuuming. The wheel plate has a spring that forces the tab against the slider. As the handle is moved to the upright position, the protusions move back through the holes, taking the tab away from the slider and the wheel plate locks in its highest position. Therefore, the position of the slider has no effect while the handle is upright and locked. Hope this helps.

Posted on Nov 01, 2007

reddevil6
  • 1673 Answers

SOURCE: Hoover savvy no suction on carpet setting

Check to make sure you hear the vac. motor is running when in that position. The switch in the handle could be bad if it is not.

Posted on May 01, 2008

  • 294 Answers

SOURCE: Hoover self propelled U6630900 idler arm lock

Remove the bottom plate (4 screws), remove belts and brush roller. There may be 1 small screw in the center front of the vac under the brush roller. remove this one. If this is a bagless model you will also need to remove all of the back screws (torx) that hold the lower hose on. This needs to be removed to take the hood off. underneath on each side of the power drive assembly you will have 1 screw, remove them. there is a clip on each side that snaps the front on, push them out with a screwdriver. Then the hood is removed.

Posted on Feb 28, 2009

  • 294 Answers

SOURCE: stand up lever is plastic, broke when stepped on

The pedal release can be replaced but the base will need to be checked for cracks as well. if the base is broken most common is the socket the pedal release snaps into. some of the plastic parts have been made with better materials

Posted on Oct 21, 2009

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2 Answers

My roller bar doesn't seem to be working, but I checked the belt and it appears to be fine, but a bit loose. Is this the problem? dial on front to determine heighth is also very loose and does not click...


If the brush roller stalls when it comes into contact withthe carpet, it might be that the tensioner spring has broken off. This is adesign flaw in the Eureka4870. The symptoms are: 1) brush spins until it contacts the carpet then itstalls, 2) the brush lever for setting floor/carpet is loose and lacks a firmsetting, 3) vacuum no longer has the feel of being self-propelled on carpet. Itis not very easy to repair and I don't know if a replacement tensioner iscommercially available. To fix it yourself:
  1. Remove the base plate by the 3 Phillips screws.
  2. Remove the brush roller and belt.
  3. Remove the black accordion hose connecting the motor housing to the clear vertical riser on the side of the vacuum. Unscrew it from the riser. Then disconnect the accordion hose from its black connector that screwed into the riser. Then unscrew the Torx T-20 screw that holds the bottom of the hose into the motor base. Then draw the accordion hose out through the underside of the vacuum.
  4. From the underside, remove the 3 Torx T-20 screws that hold the red top cover in place. They are located between the brush roller and the two small height adjustment wheels. The middle screw holds the height adjustment knob. The other two straddle the height adjustment knob.
  5. Turn the vacuum upright and remove the red plastic cover. This is the most difficult step. Use a flat screwdriver to pry it loose in the hole where the accordion hose fed through. On the other side, where the foot operated upright release lever is, you will have to pry the red cover off. I broke the red plastic loop from here. But it still reseats OK.
  6. Still upright, remove the belt tensioner by the 5 Torx T-20 screws, including the one connecting to the slotted arm (it has a wide cylinder under the head). Before removing the piece, note that there appears to be another mounting hole like the four standard mounts. This is the anchor for the spring which applies tension to the tensioner. The other anchor point for the spring has probably broken off, and the spring might be dangling loosely or even missing.
  7. Remove the tensioner unit. Locate the other anchor point, which is probably a broken tab with a hole as the anchor point, broken through from the high tension of the spring. This is the aformentioned design flaw.
  8. Drill a new hole near the broken tab. I drilled two, at right angles to each other. Drill small holes so as to not weaken the remaining plastic. I drilled ~1 mm. Holes should be between the two anchor points so as to not make the spring stretch longer than the original. Plus, a longer anchor point will interfere with the butting of the plastic edge when in the stretched position. If the spring is already lost then use a replacement that is ~1 inch long (total length) with hooks at each end.
  9. Reassemble the tensioner device. Check the operation of the tensioner lever to ensure smooth, firm locking.
  10. Reassemble the red plastic cover (3 screws including the height adjustment knob).
  11. Reassemble the accordion hose, brush roller, belt, and base plate.
It now works as good as it every did. I will next be seeking a replacement tensioner device from Eureka or a shop, since Isuspect this modification may eventually weaken and break. The plastic springanchor points are definitely a poor design by Eureka.

Sep 18, 2010 | Eureka Smartvac 4870 Bagged Upright Vacuum

1 Answer

MY vaccuum wont suction or turn at the brush bar. The wand works and I already checked/cleaned all the areas the instrucion manual said to.


The DC07 has a "brush control system" operated by a knob on the right side of the base. This knob has two positions: "bare floors" (or "off") and "carpet" (or "auto"). The roller will turn only when the knob is on "carpet", and even then only when the handle is tilted back (with the base still flat on the floor). The problem is that this system uses two belts, only one of which is easy to see. If you're sure that the control knob is in the correct position, and still the roller doesn't turn when the handle is lowered, then most likely the belt that you can't see is broken (that belt goes from the motor to the clutch mechanism behind the control knob). It's also possible that the clutch itself has failed.
Belt/clutch replacement on this model is not for the faint-hearted! To see what's involved, you can go to www.dysonmedic.com then scroll to the bottom of the page and click on "DC07 clutch replacement". At least you will see how to remove the clutch cover so you can check on the other belt and confirm if this is the problem or not. Then you have to decide who is to do the job!
As for loss of suction, check carefully for splits in the short length of clear plastic hose on the underside of the machine (pull it off from the motor end and then unscrew it from the brush-roll end).
I value your feedback, so please remember to rate this response. Good luck!

Jan 24, 2010 | Dyson DC07 Bagless Upright Cyclonic Vacuum

1 Answer

How do we fix roller brush on dyson dc14 full gear?


Have you also checked that the brush control knob is set to "carpet"? The brush will not spin in "bare floor" mode. (Sorry if this seems too obvious to mention, but I see lots of Dysons where incorrect setting of that knob is the only problem.) Failing that, you almost certainly need a new drive belt.

Nov 13, 2009 | Dyson DC14 Full Gear Bagless Upright...

2 Answers

Hoover WindTunnel Self-Propelled V Belt


when you released the end to slide the new belt on it allows the tension roller to slide into the wrong position. Remove the top so that you can see the roller, at the left side of the roller mechanism there is a screw, loosen it enough to allow the roller to return to the correct position.
good luck

Mar 23, 2009 | Hoover U6441-940 WindTunnel Bagged Upright...

1 Answer

The brush rollers are on off, how do i turn them on? model #u6616-900


There is a slider on the front of the hood labeled "brushroll on/off. Carpet/ Bare Floor."

Slide this switch over to the carpet position. Note that if the handle is upright, it will not shift into "carpet" mode until you drop the handle back. This is a safety feature.

If the brushes are not turning at all, it is either your rubber belt, or possibly a problem with the belt tensioner.

-R

Aug 04, 2008 | Hoover Vacuums

1 Answer

No suction when vacuming floors


Hi.

There are 2 types of Dc07 one is clutched & has two belts the second has only one belt going from motor to brush roller.

Lay machine on its side pull back handle as if you are to vac carpet switch machine on look to see if brush roller is spinning.

If it is not spinning unplug machine from mains supply & remove the sole plate by turning the three plastic screws to unlock position, Lift sole plate away if you have non clutched machine you will now see the brush roller with A belt going from this to the motor shaft belt may have snapped or come off so replace it.

If your Dyson has A clutch unit this engages the brush roller when you pull the handle back to vacuum.

Check the clutch control knob which is at the bottom left side of machine looking from the front.
It should rotate to drive position when handle is pulled back.

If it doesnt turn the knob by hand to drive.

If you still have no brush rotation after doing all this then either the clutch is faulty or the second belt which goes clutch to motor has snapped & will need replacing.

There are service manuals available for these repairs at this site
http://dysonmanuals.llc.nu/index.htm

Jul 05, 2008 | Dyson DC07 All Floors Bagless Upright...

1 Answer

Dyson DC07 Vaccum - brush will not turn


Hi.

Your Dyson has A clutch unit this engages the brush roller when you pull the handle back to vacuum.

Check the clutch control knob which is at the bottom left side of machine looking from the front.
It should rotate to drive position when handle is pulled back.

If it doesnt turn the knob by hand to drive & try the machine.

If you still have no brush rotation after doing all this then UNPLUG machine from mains supply.
Now lay machine on its side & remove the sole plate, This is the cover over the brush roller.
Turn the 3 plastic screws to unlock postition & lift sole plate off.

Now try to yurn brush roller using your hand. It should turn freely if it is difficult to turn look for any foriegn object obstructing the roller.

If no obstruction found then remove the brush roller from the machine & check the bearings in the ends of the brush roller one or both may be siezed up if they are then new brush roller will solve the problem.

If bearings are good then either the clutch is faulty or the second belt which goes clutch to motor has snapped & will need replacing.

It is difficult to fully explain the clutch removing procedure,
But there are service manuals available for these repairs at this site
http://dysonmanuals.llc.nu/

Jun 15, 2008 | Dyson DC07 Bagless Upright Cyclonic Vacuum

4 Answers

Dyson suddenly hard to push on carpet


I know this sounds silly, but it works. Turn it over and wipe all the black residue off the bottom of it (off the plastic on the bottom that rubs on the carpet as you push and pull it). I thought my husband was out of his mind when he told me that was the solution, but it really works.

Jun 02, 2008 | Dyson DC14 Animal Bagless Upright Cyclonic...

2 Answers

Belts keep burning up


It sounds like you have a roller problem. This machine has a carbon fibre roller suspended on plastic end caps. When dirt and hair etc. gets in and damage the bearings, the belt will be the first thing to go. If the roller is noisy, that indicates that it is off centre and is rotating unevenly. You will probably have to replace the roller.
Take the belt off and rotate the roller slowly and observe the ends. If it is off balance, it will not rotate evenly. The plastic caps unscrew to reveal the brngs and usually you will find hair and other junk gumming up the works. If the roller is damaged, you will be able to see melted plastic and chards of carbon fibre there.

Feb 15, 2008 | Hoover U5172900 Fold Away Widepath Bagless...

1 Answer

Brush Roll won't switch positions


The adjustment knob on the hood of the machine is a plastic "arm" that prevents the belt tensioner from tightening up the v-belt so that the roller will stop or start. If the knob is adjusted while the handle is back, it can break the plastic arm off and then the function will not work. This knob should only be adjusted with the handle in the upright position. Usually, if the arm is broken, the roller will still turn when the handle is lowered and will not turn off when the knob is selected to the bare floor. If the brush roll will not switch on , it is usually a problem with the belt(s). You should replace the belts yearly. They can look fine, but be worn out.

Dec 14, 2007 | Hoover U6630-900 WindTunnel Bagless...

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