You have to open the entire mid section of the vacuum. There is about 8-10 screws to remove. I would inspect for clogs in all tube sections prior to opening. I've opened my vacuum many times it's not terribily difficult just be careful to not disturb the wire routes or pinch them when closing the vacuum back up.
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There is a clean out port on the back on the lower portion. Remove two screws to remove the cover to gain access to the air path from the floor to the bag. If this doesn't solve it you may have to remove the screws on the bottom which allow you to remove the cover of the nozzle assembly. There is a cover that goes from the floor to the direct air motor. Remove the screws to remove this cover which gains access to the air path and fan of the direct air motor. It's possible you may need to remove the direct air motor to clean out the fan if it has something stuck in there. This is not a job for the average person but if you are very mechanical you should be able to do it. If in doubt take it to your dealer. It is not very expensive to have done.
Hi Susan Boyce... check thr heating of the motor area, if it heats a bit more than normal, try to check suction without pipe once it can have something stucked in it.
Other thing... check the air exit.. a microfilter for instance.
I will list the spots to check this vacuum for clogs. First see the first diagram I uploaded.
First thing is to remove the canister.
Then you will see in the diagram "A." Press that button and pull the hose up and check for blockages. Make sure to check for light through the hose to guarantee no blockages.
Now tilt the vacuum forward and pull out the U Bend Airway and inspect it as well (3rd pic in diagram)
Now squeeze the valve release catches to remove the airway and inspect the valve for blockages. (4th pic in diagram)
The diagram above is the pre motor filter many forget to check.
Press the filter release catch and pull the filter housing out.
Remove the filter.
Wash real good and let dry completely.
Now the one thing that tends to go bad on these vacuums is the automatic air flow adjuster. When the vacuum is upright the pathway for suction is automatically on the wand. After some good use the little disk in there snaps and the air flow stays restricted in what ever position the vacuum is in. I have contacted Dyson a few other time and they do not sell this part. It is a factory fix only or I would give you the instructions to do it yourself.
Remove the machine side of the hose--is there suction at the machine? If so, run a broom handle or similar through the hose to dislodge the clog. If no suction at the machine, you may need to fish out debris with a hooked stiff wire from the port. Remove the bag and examine the port area underneath for similar clogging. Finally, check the brush area underneath the machine bottom plate for more obstruction. Also, check the brush assembly for debris accumulation. Remove the drive belt and check for free turning of the brush. If turns hard, remove the brush, clean the bearings and roller pins, then apply a small quantity of light oil like 3-1 or sewing machine oil. Hope this helps!
sometimes debris can still be hidden in odd places. if you have access to compressied air you might carefully us it to blow out all the passageways that the air travels from the brush to the dirt holding area. make sure you dont have a filter that you missed when you replaced them. use low pressure air to blow out the system as high pressre air might damage a part of the system.is the motor running at the normal speed? if not you might try to find out why and fix that as well. as always never worksk on a vacuum that is plegged in. good luck.
If a vacuum has not suction then there has to be something plugged up in the port. You will probably have to remove the bottom. Either with a bag or bagless, find the suction port and usually it's plugged with all kinds of stuff. Sometimes if you have access to compressed air you could blow it out from where the bag hooks up or if bagless where it empties into the container. It's not that unusual for it to plug up. My parents have old old old carpet from I think the 70's, (The shag type that you can use a rake with) and there vacuum is always getting plugged up. Good luck.
I would say you either have something stuck on the impeller or there is a piece of paper or something stuck inside the hose. its not clogging the hose but when the air passes by it. It is making that noise. If you find nothing you may need a repair. May have a bad bearing in the motor. Actually you can also try inspecting the brush on the head. It removes easily from vacuum and should spin freely and quietly.
appears that you may have all the belts in place but the beater brush is jammed and it can't spin.. the jam may also be blocking the vacuum port so that you don't get any suction to that area. I suggest you unplug the vac, then open the base section to gain access to the beater bar and check to make sure the brush can spin freely.. also check that the drive belt is properly seated on the shaft and that there are no obstructions in the vacuum port.. hope this helps you..