Question about Kenmore 35912 / 35913 Progressive Upright Vacuum

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Buzzing sound sound comes from small port behind the suction hose, it's spring loaded, when vacuum is turned on it buzzes

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You ether have an air restriction, or your bypass valve is broken. If it is an air restriction: The motor requires more air flow to stay cool, the noise you hear is an emergency air inlet made to prevent overheating. You may need to use the hepa bag to help increase the air flow. Some hose attachments will cause this to happen, your performance indicator light (if you have one) should also be illuminated if it is an air flow issue. Check your hose for a blockage.

Posted on Mar 07, 2009

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My Kenmore bagless intelliclean vacuum is making a loud noise mainly when it is vacuuming on the highest setting (when the light is red). We have taken it apart and cannot find a clog. It has also lost...


This might help, it was posted on a previous problem but is the same issue you are having it seems: "Here is a possible solution. If the vacuum sounds normal when the green light comes on, then the issue is a suction bypass. Kenmore built a suction bypass in to help cool down and protect the motor should someone either never clean the filter, empty the canister or somehow manage to clog the hose. There is a spring holding the bypass closed and is overridden by vacuum suction. I guess the spring becomes weak, allowing high suction to pull it open which in turn reduces suction so it closes again. It can do this several times per second making a loud racket and slightly affecting performance until the sensor goes green, then the vacuum suction is too low to overcome the spring tension thus why it sounds fine then. The trick? The very hard way (what I did) was to open the vacuum, open the casing where the spring is and pull it apart slightly to increase the spring tension. The easy way is to put tape over the hole where the bypass is. The inlet is under the hose track on the back on the right side as you're looking at it. The hole is about the size of a quarter and you'll see fins across the hole. The tape would keep the suction. The motor would still pull back the bypass but since tape is applied, there would be nothing to reduce the suction thus keeping performance and reducing the noise. However, this circumvents the intended design so you do so only at your own risk."

Dec 27, 2010 | Kenmore Progressive Bagless Upright with...

1 Answer

Loss of suction on hand tools (DC07)


It sounds like there's probably a clog in the hose. Drop a small coin or marble down the hose and see if it falls through. There's going to be a loss of suction in the power nozzle too, just not as noticeable when vacuuming carpet.
There could also be a clog behind the filter where the hose plugs into tank, or a dirty filter.

Nov 22, 2010 | Dyson DC07 Bagless Upright Cyclonic Vacuum

2 Answers

My vacuum cleaner start up fine, then quickly


Hi There,

This is a telltale sign that your vacuum cleaner is clogged. When the motor makes the higher pitched louder noise, your motor is not able to pull air through it, and has to strain harder because it's not able to breath.

Because you have already narrowed it down, that the noise only happens when you put the wand back into the vacuum, this means that you clog is definitely in the bottom section of the vacuum cleaner. Most clogs on upright vacuum cleaner occur right at the suction port behind the roller brushes on the bottom of the machine. Turn the vacuum upside down so that the brushes are facing upwards. Unscrew the bottom plate of the machine so that you may access the roller brush and belt. Look behind the brush roller for the opening of the vacuum where the suction port it. Look inside here and see if you can visibly see anything lodged inside. Sometimes just pushing a long screw driver into this hole can dislodge the obstruction.

If you aren't able to see anything in this port, and the screw driver doesn't dislodge it, look inside the small section of how that the wand connects into, and try pushing your screw driver down this hose to see if you can dislodge it from this part.

Sometimes a metal hanger can also effectively unclog hoses on vacuum cleaners, but just be careful that the hanger doesn't tear the lower hose section while you're pushing it through.

Also if you have another vacuum in the home, using the hose from the other vacuum and putting it inside the lower hose, or the suction port behind the brushes while you're pushing with the screw driver will also many times dislodge the obstruction easier.

Please let me know if this was able to unclog the vacuum cleaner, and I'd be more then happy to try and do some more advanced diagnosing with you for your vacuum cleaner.

If this was helpful to you, please help other Fixya users find this repair by rating helpful. This is greatly appreciated, and is what keeps Fixya repair experts continue giving free advice on the site.

Thanks so much,

Chris J.
GoVacuum.com

Apr 11, 2010 | Kenmore Progressive 35922 Bagged Upright...

1 Answer

Is there a switch to turn-off the tools so that


On the Hoover U6311-900 there is no switch that turns off the suction to the tool hose. That hose is attached to the head of the vacuum on the side via a spring loaded "door". Just twist the hose to remove it, the door will close and you will have full suction again.

Apr 06, 2010 | Hoover U6311-930 Power Drive Bagged...

1 Answer

I have unscrewed all the screws and can't get bottom off.


Here is a possible solution. If the vacuum sounds normal when the green light comes on, then the issue is a suction bypass. Kenmore built a suction bypass in to help cool down and protect the motor should someone either never clean the filter, empty the canister or somehow manage to clog the hose. There is a spring holding the bypass closed and is overridden by vacuum suction. I guess the spring becomes weak, allowing high suction to pull it open which in turn reduces suction so it closes again. It can do this several times per second making a loud racket and slightly affecting performance until the sensor goes green, then the vacuum suction is too low to overcome the spring tension thus why it sounds fine then. The trick? The very hard way (what I did) was to open the vacuum, open the casing where the spring is and pull it apart slightly to increase the spring tension. The easy way is to put tape over the hole where the bypass is. The inlet is under the hose track on the back on the right side as you're looking at it. The hole is about the size of a quarter and you'll see fins across the hole. The tape would keep the suction. The motor would still pull back the bypass but since tape is applied, there would be nothing to reduce the suction thus keeping performance and reducing the noise. However, this circumvents the intended design so you do so only at your own risk.

Mar 10, 2010 | Kenmore Progressive Bagless Upright with...

1 Answer

Eureka rm 4480


Hi there SmartAlec from NelsonVacuums.com.au . Unless there is a bad sound coming from your vacuum i would suggest you have a blockage. This machine is prone to getting blockages in 3 different places.
  1. at the base behind the brush.
  2. Inside the main suction hose - this should be removeable so you can drop a small coin through. If it doesnt fall easily viola blockage found.
  3. Where the dirt enteras the chamber or bag.
Basically start by removing all hoses and filters and turn machine on put your hand over all inlet and exit points provided you can feel airflow at one of these points work backwards from there and identify the point at which you no longer feel airflow.
HAPPY vacuuming !

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3 Answers

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Here is a possible solution. If the vacuum sounds normal when the green light comes on, then the issue is a suction bypass. Kenmore built a suction bypass in to help cool down and protect the motor should someone either never clean the filter, empty the canister or somehow manage to clog the hose. There is a spring holding the bypass closed and is overridden by vacuum suction. I guess the spring becomes weak, allowing high suction to pull it open which in turn reduces suction so it closes again. It can do this several times per second making a loud racket and slightly affecting performance until the sensor goes green, then the vacuum suction is too low to overcome the spring tension thus why it sounds fine then. The trick? The very hard way (what I did) was to open the vacuum, open the casing where the spring is and pull it apart slightly to increase the spring tension. The easy way is to put tape over the hole where the bypass is. The inlet is under the hose track on the back on the right side as you're looking at it. The hole is about the size of a quarter and you'll see fins across the hole. The tape would keep the suction. The motor would still pull back the bypass but since tape is applied, there would be nothing to reduce the suction thus keeping performance and reducing the noise. However, this circumvents the intended design so you do so only at your own risk.

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Had the same problem tonight. Took the entire thing apart only to find there was a much simpler solution. Check the small hose that runs from the brush rollers where the longer hose (on the back) attaches to the side of the vacuum. Easiest way to do this is to lay the handle down and stick something (coat hanger worked good) through it until it comes out of the head. I found a pretty good sized fuzz plug in mine. As soon as I removed it, everything worked great again - and no noise!

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3 Answers

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Thank you for this solution, it saved me $$$ and a trip to the repair shop.

Feb 23, 2008 | Kenmore Progressive Bagless Upright with...

1 Answer

No suction in vacuum on a Panasonic MC-V7355


the device is a bypass which allows some air flow when there is a blockage. you have a blockage somewhere i suspect hence no suction. check all hoses carefully. take off the base and check the air duct away from the brush roll

May 02, 2007 | Panasonic MC-V7355 Upright Vacuum

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