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

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Cover knobs How do you remove the two plastic knobs on the cover for bare or carpet and carpet heighth to get the cover off?

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You don't have to remove those knobs to get the cover off. Just 2 screws from the bottom, then on each side you will notice a slot from the bottom, use a screwdriver, insert in the slot, and pry out to release the catches and the top cover will come off.

Posted on Mar 29, 2008

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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

2 Answers

I have a 4 year old pink dyson that I've loved until recently. It's always been easy to unclog when it wasen't picking up-now it seems maybe a seal problem has occured. The suction is making a funny noise...


Thanks for your response.First: (This is most likely as you say the suction is making a funny noise.) The DC07 has a short length of clear plastic hose on the underside of the machine. Check this very carefully for splits (pull it off from the motor end and then unscrew it from the brush-roll end). Even the smallest split can cause serious loss of suction. If you find a split it's best, and inexpensive, to replace the hose rather than try to repair it. Next: (Less likely.) Most, but not all, models of the DC07 have 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). Dust pick-up will bee poor if the brush-roll has stopped working. 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, but the roller doesn't turn when the machine is on and the handle is lowered, then most likely one of the belts is broken (one belt goes from the motor to the clutch mechanism behind the control knob, the other from the clutch to the brush-roll). 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!
But, with any luck, you will find that it's that little plastic hose that's the problem anyway... and don't listen to the Oreck salesman!
I value your feedback, so please remember to rate this response. Good luck!

Jan 20, 2010 | Vacuums

1 Answer

Dyson DC14 roller doesn't turn but everything else works. The belt is on correctly, the roller is clean and it turns manually so I can't figure out the problem.


The DC14 has a "brush control system" operated by a knob on the right side of the base. This knob has two positions: "bare floors" and "carpet". 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, 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).
Belt replacement on this model is not for the faint-hearted! To get an idea of what's involved, you can go to www.dysonmedic.com then scroll to the bottom of the page and click on "DC07 clutch replacement". It's a slightly different model, but the principle is the same. 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.
I value your feedback, so please remember to rate this response. Good luck!

Jan 18, 2010 | Dyson DC14 Animal Bagless Upright Cyclonic...

1 Answer

The bar isn't turning on my dyson..the belt is still fine looks like maybe something with the motor?


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, 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).
Belt 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!
I value your feedback, so please remember to rate this response. Good luck!

Jan 18, 2010 | Dyson DC07 Animal Bagless Upright Cyclonic...

1 Answer

The knob that turns it from carpet to bare floors makes the head not spin for carpet It was a reburished one. bought in Nov 09


sounds like those wonderful people over at dyson installed the clutch and cover on wrong. it should be fine just use it oposite.

Dec 30, 2009 | Dyson DC07 All Floors Bagless Upright...

2 Answers

Carpet roller will not turn. Vacuum still sucks up dirt


You may need to replace the belt that drives the roller head. They wear out and break, or maybe it has just come loose. Also check for string and thread wound around the roller wheel axles, that is a common "culprit"

Jul 21, 2009 | Kenmore 23913 Progressive PowerMate Bagged...

3 Answers

Belt


Remove sole plate and beater bar.
Remove control knob by prising between yellow plastic side of knob and casing using wide bladed screwdriver.
There three torx headed screws holding the clotch assembly in place. Two are visible but the third is accessed via a circular access holein the main casing.
When these three screws are removed the clutch assembly can be pulled out. the thinner belt driven by the motor needs easing over the motor shaft.
There are two screws holding the end plate onto the clutch assembly. remove these, twist the end plate and remove. note where the fibre clutch plate and the metal plate fit and replace this belt.
On opposite end prise off spring washer and this assembly comes off the reveal the belt.

Refitting is the reverse.
Have a look on you tube and type in replacing clutch on Dyson DC4 as there is a 10 minute vidio that is quite good!!
Hope this helps!!!!!

Dec 12, 2007 | Vacuums

1 Answer

Bissell Pro-Heat Pro-Tech Carpet Cleaner


Put the piston on the bottom part of the knob, You want the the knob to be at the water only setting when it goes into the slot. After the top is pushed all of the way on, turn the auto-mix knob to see if it is turning easily. If it doesn't stop, and wants to keep turning, then you probably need a new knob.

Nov 23, 2007 | Vacuums

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