We were told our drive shaft on a DC14 went out. The brush rotates, but the dyson makes a horrible noise.

Hi Nabil, it's Jack at Dyson.

If you have a DC14 and the brush bar isn't rotating, it's worth checking to make sure the brush control on the cleaner head is set to 'Carpets', and not 'Hard floors'.

http://www.dyson.co.uk/support/dc14/dc14-all-floors/my-machine-is-not-working/i-can-see-something-wrong-visual/i-can-see-something-wrong-visual/my-brushbar-is-not-rotating2/does-the-brushbar-turn-with-the-power-on

Tip: The brush bar will never rotate when the machine is standing upright, so make sure you recline it down into the normal vacuuming position before testing it.

If you're confident the brush control is set correctly, but the brush bar still won't rotate when the vacuum is reclined, please get in touch directly so we can help further. You can reach our experts by calling 0800 298 0298 (UK), 1-866-693-9766 (US), or 1-877-397-6622 (CA).

Best wishes,

Jack
Dyson Online Customer Support
www.dyson.com

I can't probably help you but I can tell you what Dyson told me. I have this same vacuum and it just started making that same noise. When I called their rep they had me take off the bottom plastic piece (comes off real easy by taking a coin and turning the three circles). Check to make sure the belt isn't broke. Then, they had me pull toward me the roller brush and turn it to get it seperated from the belt. Then, take off the belt. On mine, the spindle was full of dog hair clogging it. I took twizers and narrow pliers and pulled everything off. Then put it back together. It worked fine for the next few times I vacuumed then it started again. So, I did the same thing again and found this spindle covered with the hair again. Cleaned it, put it back together and it worked again. Today, while vacuuming I picked up a piece of string and that noised started again. Turned it over and saw that string on that spindle. Took it off, cleaned it and it worked again then started the screeching again. So, tomorrow I am calling a vacuum repair place. IF you have the same vacuum (which you do) it should still be under warranty. Dyson told me I would have nothing to pay unless I abused the vacuum which I did not. Hopefully I am not without it very long...I have two golden retrievers who do shed alot.

Something is causing the brush to slow down, either it is full of hair or debris or the brush itself is wearing out and may need changed. The noise you are hearing is the motor protector keeping it from burning up becuse there is some type of drag on the brush. If there is no issues with the brush then I would suspect the clutch assembly is worn and needs replaced. Here is a diagram for you to look at and go from there.
http://www.espares.co.uk/diagram/dyson/dc14-vroom/p/1086/716/0/474352

Sounds like the rubber drive band has not been replaced properly to drive the brush and/or the brush was not properly cleaned. You can find the manual here:
http://dl.owneriq.net/4/4d79dca8-65d8-4c46-a58a-a2fef1f89635.pdf

Hi its Darran at Dyson.

Your machine is designed to make this ratchet noise if the brush bar is obstructed. We would recommend checking the brush bar and soleplate area and removing any blockages or hairs/threads that are wrapped around the brush bar.

Full details on these checks can be found in our Support section online at www.dyson.com.

Kind regards
Darran
Dyson Customer Service

Have you also checked that the brush control knob is set to "carpet"? The brush will not spin in "bare floor" mode. (Sorry if this seems too obvious to mention, but I see lots of Dysons where incorrect setting of that knob is the only problem.) Failing that, you almost certainly need a new drive belt.

The "horrible noise" you were hearing before wasn't the clutch! It was the roller brush. If the brush is not turning, all you are doing is burning out your new clutch. Reasons for the brush not turning: there is hair, carpet fiber or other matter wrapped around the brush that needs to be removed. Remove the roller brush, inspect it, and remove anything that could interfer with it's functioning. Reinstall and give it a test.

But in my experience, the brush needs to be replaced. Remove the brush and look for cracks in the plastic, If you see any, it needs replacing. eBay, via a distributor from England, is your best bet as far replacing the brush. Be careful of non-original brushes as they will break easily and are not of the same quality as the originals. Try searching for "DC14 brushroll" and then go down to the International Sellers at the bottom of the page.

Do not continue using the vac until you have solved the problem. You will only have to replace the clutch again.

You need to clean your roller and replace the clutch assembly that drives the belts. poorly designed vacuum with many flaws.

If this model takes a clutch then it is stripped and needs to be replaced.

Hi i had this problem myself and it sounds like your clutch assembly is broken which would be what the horrible noise your dyson is making only when your brushroll is on. Go to www.sparesaver.com to the help & support section.
It tells you all the information you need to know on how to Fit and take out your clutch and they supply it at a fantastic price!
Andrew