S344a instrutions of removal motor need to replace brushes and clean motorr

If you are referring to the two main brushes underneath the Roomba (not the side-sweeper) then there are a couple possibilites:

1. The gears need to be cleaned/regreased inside the brush unit. There are several videos/guides online that will show you haw to dissassemble the gears, clean out the gunk, and reassemble. Basically there are four screws that hold the unit in; once it is removed you will see several screws on the side of the unit that contain the gears for the brushes. Dirt/dust/hair makes it's way into the gear-case and gums up the works, which seizes the motor.

2. Another possibility is that the electric motor that drives the brushes needs tp be cleaned or replaced. My Roomba had lint/hair caught up in the electric motor...in fact the dirt was separating the brushes from contacting the rotor inside the motor, which means they weren't cunducting electricity. Once I cleaned out the motor itself, the brushed worked right away! There are a couple view holes on the sides of the motor...get a flashlight and look inside...there is probably lots of junk keeping the motor from working properly.

Good luck!

Hi there, it's Jack at Dyson.

DC25 doesn't use a conventional, user-replaceable belt. Instead it it uses a belt engineered to last the lifetime of the vacuum in normal use, protected by a sensor which shuts off the brush bar if something jams it.

Normally, checking the cleaner head for obstructions and removing any threads or hair from the brush bar and endcap will allow you to reset your machine:


However if you've already followed each of the steps shown in our video guide without success, you may need a replacement cleaner head or a repair of your machine. If you can contact us directly we should be able to arrange this for you, and can also confirm if this is covered under your Dyson warranty.

When you have your DC25 easily to hand, please get in touch with the Dyson Customer Helpline so we can help determine if a repair or replacement part is needed. You can reach us by calling 0800 298 0298 (UK), 1-866-693-9766 (US), 1-877-397-6622 (CA) or 1800 239 766 (AU).

We'll look forward to speaking with you.

You have already removed the screws so lift the brush cover off. Then grasp rotating floor brush at both ends and lift. Clean strings,hair and other debris from rotating brush, paying close attention to the brush ends. Clean the debris from motor pulley and drive belt areas.Grasp old drive belt and remove from motor pulley. Place new drive belt over motor pulley and stretch other end over rotating floor brush in the space between the bristles. Place the ends of the rotating floor brush down into slots on the sides. Turn the rotating floor brush by hand several times in the direction of motor pulley. If installed properly, drive belt will center itself on rotating brush. Reposition brush cover and screw back into place. I hope that this helps you!

The brushes turn by the airflow from the vacuum suction turning a turbine motor to spin the brushes. First try to spin the brushes by hand. If they won't turn it usually means the brushes are clogged with hair and debris or need replaced or the turbine could be seized up. If the brushes won't spin reach under the brushes and push the little tabs and remove the brush block asssembly from the machine. If the brushes spin freely after you remove them from the machine then that means that most likely the turbine is seized and will need to be repaced. If the turbine is not seized you may simply just have a clogged filter screen. Most steam vacs have a red screen filter either on top or underneath the machine. On the top it is under a little clear plastic cover that you have to pry off before you can pull the screen out to clean it. If it's underneath you can pull it out and clean it.

More likely it is the beater brush which is jammed and not turning. Turn the machine over and remove the bottom plate. Unhook the drive belt, then try to turn the beater brush--it is likely bound up with string, thread, and hair. Try turning the machine on once--if the motor spins and makes vacuum, it is probably ok. Remove the brush assembly and clean it of debris. Clean the end bearings with a Q tip and WD40 oil, then wipe clean with another Q tip. Oil the bearings with 3-1 or other light oil. Check the belt for a badly burned area--replace if necessary. Slide the new belt over the brush and motor shaft, then drop the brush with bearings into the case, and check rotation. If ok, replace the plate and test on your floor. Hope this helps!

You need to replace the belt, it has probably broken. Your actually supposed to change them yearly. Here is a link to the belt you need and a manual with instrutions:

Dyson DC07 Belt and Manual

This is kinda of tricky. need to know what kinda of vacuum it is first. However if you get it apart. To fix this problem the armeture brass needs to be cleaned & you should replace both carbon brushes. Should be cheap to fix if you are up to it. good luck save some $$$$...

You need to know that very seldom will new carbon brushes alone `FIX`a motor in todays vacuums as they are higher RPM than those of 30 years ago.
On a salvageable motor a good rebuild procedure will generally include repacking bearings, cleaning suction fans and reseating new brushes with an abrasive seating stone at low speed with a motor run in device with variable voltage

That said, I have not done a HENRY in years but it likely will contain a generic AMTEK Lamb type motor as it is sold as more durable vac.
On a traditional vac motor, carbon brushes are removed by releasing a clamp over the brush. The brush holder will have either a flag terminal on it where the wiring will disconnect from the side, or a flat flag terminal which slides into a pocket on the carbon brush housing.
. If you are going to the trouble of replacing the brushes, remove and inspect the old ones for wear and chipping. Also inspect the commutator surface on the motor where the brushes contact. If there are any curved gaps between segments, or if the com is worn like an apple core , you need a motor complete.
If the motor has simply worn to the point where a brush has stuck or worn to nothing, you may be bale to reseat the new brushes, however any evidednce of BLUE sparks or noise is not a good sign . Best of luck. Post back if you need more help

brush roller berings may be faulty making the brush stick and motor shaft spins against belt causing melting. remove brush roller, clean out end berings and see if ends spin freely or if they stick. if they stick, you might need to replace brush roller.

your roomba is thinking that you need to clean the brushes. if too much load it put on your brush motor--the unit will think that something is wrapped around the brush and slowing down the motor. if you have cleaned your brush and are sure that is not the problem; you need to look for anything else that could be slowing down the brush/motor. If this is inconclusive you need to put your roomba into diagnostic mode by following the procedures in the link below http://swiftracer.com/index.php?myPage=RoombaDiagnosticMode.php