When a Dyson DC07 makes this horrible grinding noise, it
can only mean one of three things.
The Dyson DC07 uprights use a
clutch mechanism to control the brush spinning when you change the
floor / carpet switch. When you hear this grinding noise, it's
actually the clutch slipping because it can not spin the roller brush.
Most other uprights use a belt to spin the roller brush, and if
something is stuck in the roller brush it will cause the belt to break.
however will make that awful grinding noise rather then breaking the
belt, and will only make that noise if the roller brush can not spin.
When you hear this noise on a Dyson, it can only be 1 of 3
things. Either your clutch mechanism itself has gone bad, or the roller
brush itself was not properly put back into the vacuum, or the brush itself has gone bad.
I'll be happy to walk you through
step by step on how to diagnosis this problem and find out which one of
these two parts is bad on your vacuum
1. Make sure the vacuum is unplugged. Then turn the vacuum upside down
that the brushes are facing up. It's easiest if you put the head of the
on top of a bench, or counter top. This is how the vacuum should look:
2. You see on the bottom of the vacuum 3 plastic screws that are
the same color as the vacuum cleaner
If you're vacuum is purple, the screws
will also be purple. Use a flat head screwdriver, and turn each of the 3
a half of a turn, counter clockwise to loosen then. After each screw has
turned (you don't need to remove the completely, just a half of a turn
simply pull upwards on the bottom plate to remove it.
3. You should now be able to see the roller brush exposed. You'll now
to remove the roller brush. This will take some patience, and some work
to get this brush out of the vacuum. There is a special tool that has
designed to help you get the brush out easier. I would try getting the
first before buying this special tool. The easiest way is to use a flat
screw driver and pry the belt up while pulling up and out on the brush.
some patience and some maneuvering, you'll be able to get the brush out
vacuum. Here's where you should put the flat head screw driver on the
Step 4. Once you get the belt out of the vacuum
cleaner, it's time to test it.
Use your finger tips to hold just the end caps on the very end of the
brush. While holding just the end caps, use your thumbs to try and spin
roller brush. Does the brush spin freely? It should rotate completely
times on each spin. If the brush doesn't spin, or you feel some kind of
resistance to the brush spinning, then this indicates that your roller
gone bad. Here's a picture
of how to test the brush:
the roller brush went bad, then you'll need to purchase a new one.
Here's a direct link to the roller brush your machine uses on our
the brush however was able to spin
freely, and it spun multiple times, this indicates that most likely the brush was not put back in properly, or it could be a little more
serious of problem in the clutch itself has gone bad. The clutch
is a much longer, more challenging repair to do. There is a very helpful
how to replace the clutch below so that you may follow step by step
on how to change it. It was really helpful for me the first time I did
I think more likely however it's probably that the brush was not put back in properly, and this caused the brushes not to be able to spin, which would cause the clutch to make that horrible noise. Make sure that the roller brush is pictured like the brush above, you may also want to make sure that the bottom plate is put on correctly, this could also prevent the brush from spinning:
Here's a picture
of the WRONG way to install the bottom plate. Notice the gap in
between the two housings:
another picture, that is the RIGHT way to install
If you need to replace the clutch, here's a direct link
to the clutch your Dyson DC07 uses on our website:http://www.govacuum.com/dydcclasfore.html
the video on how to replace the clutch:
When you hear that grinding noise, it can only
be one of these three problems. This clutch mechanism was so
problematic that Dyson removed it on the second series of the DC07
models. I hope that this repair was helpful in diagnosing your
problem. If you have any questions about the diagnosing, or the
clutch change, please feel free to use the Clarification Request form
here on the Fixya repair page. If this was helpful you, please be sure
to rate my repair as helpful by clicking the thumbs up icons.