Brush bar not turning. belt ok - Panasonic Mc-Ul594 Eco Max - Bagless Upright Cleaner

Belts may look ok and may make the brushroll spin but need to be replaced at least once per year. First make sure the brush roll will spin freely.

hi John.
you have not said on what model its not working.
but if you go to this link and look for your model it might help you out.
Brush bar not working Google Search

The belt that turns the brush bar is worn out or broken. Clean the area that the belt rides on and replace the belt.

Per owner's manual
1. Make sure the brush control is set on carpet mode.
2. The brush will only spin when the handle is reclined.
Others:
The belt has worn out and needs replaced. Although it appears okay, stretching is possible, which would result in too loose a grip to turn the bar.
If the belt was replaced, it may not have been pulled tight enough to turn the bar. To tighten on many vacuums, simply loosen the screws on each end of the brush, pull toward the front of the power head and hold while tightening the screws.

Martinsivyer:

Turn the machine upside-down and see if you can turn the beater/brush bar with your hand. You should see the brush turning and feel the resistance from the motor. The brush/beater bar may be binding, and what you are smelling is the motor shaft spinning against the rubber belt. You can remove the base plate and check the brush/beater bar with the belt disconnected. If the brush/beater bar is difficult to turn, you need to remove the brush/beater bar and clean the bearings at each end, Remove any threads that are wound around the beater bar ends so that the bearings roll easily and smoothly. Check to see that your machine is not set too low for the surface that you are bacuuming. While you have the belt disconnected, check thi inside surface to see if the motor shaft has been spinning against the belt, you'll see the damage to the inside circumfrence of the belt.

The belt is rubbing the foot plate.Check to see if the foot plate is damaged.Allso check the bearings in the brush bar are free and spin without the belt on.If you cant spin the brush bar by hand with the belt not attached then your bearings are seized.Get a new brush bar

Ok, so I had the same ratching noise and took the advice of many sites directing me to clean the brush. But like most I cleaned the brush and the noise continues and the brush does not spin. Reluctant to take it to get serviced I dug a little deeper and now it works just fine. This is what you need to do as removing any hair from just the brush part will not be enough.
Remove the entire brush bar from the bottom of the Dyson, this means pulling the bar out of the drive belt. This is not to difficult just use a little muscle as the belt will stretch. Once the bar is out grasp hold of the two plastic end caps on the brush bar which the brush bar actual spins in. These two caps are connected by a slim metal rod which runs through the brush bar. Place one hand on each side and begin to twist and pull until one of the caps comes off. Once the cap is off of the one side you can pull the other cap from the other side through the brush bar as this cap will be the one attached to the slim bar I mentioned above. If like mine you will see a ton of hair wrapped around these caps and inside the ends of the brush bar. Clean them out as best as possible.
After you clean it out, run the cap with the rod back through the brush bar, attach the other cap and twist and push together. Make sure the caps lineup which each other just like they were when you pulled it out. You'll notice how much more freely the brush bar spins between the two caps then before you cleaned it. Now, pull on the drive belt and feed the brush bar back through and attach as it was to begin with. This did the trick for me.

If this model has a brush control - i.e a roller at the side of the model which controls brush to spin or not, then its a protected brush model - therefore even if the drive belt is intact the Dyson would have to be repaired by a service personnel or professional. The brush protection isn't able to be taken apart and sounds like it may well have slipped off due to tension.

Ok taking the cover off is good. I believe the the little red thing is the beater bar. This beater bar has brushes on it an extends the width of the vacum. Pull the beater bar out straight. Some times it is tight. Next is to place the new belt around the spindle in the back and slide the beatrer bar into the belt. No twists! Besure to have the beater bar with the seperated area with no brushes inline with the belt.Now place the beater bar in place. Make sure you turn the beater bar so on the side the slotted portion slides all the way in place. Replace your cover. Turn it on and try it.
I believe this will work. Let me know.

desmjs

The belt just goes from the motor shaft to the brush roll. Do the ends of the brush trun freely, or is one of them froze up, if so replace the brush roll. If it is ok, try to turn the brush roll by hand, maybe the belt got pinched and won't move.