Question about Dyson DC04 HEPA Bagless Upright Cyclonic Vacuum

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I have a Dyson DC04 which is making a strong burning smell within a few seconds of switching on. Is this likely to be the motor and if so can it be replaced?

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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!

Posted on May 16, 2010

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If your DC04 is making a burning smell after picking up the duster, I would encourage you not to use the machine until we can help you locate and clear the blockage, and run you through some quick troubleshooting checks to make sure nothing is damaged.

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http://paulroberts69.wordpress.com/2008/01/01/repairingremoving-the-cableswitch-on-a-dyson-dc04-or-similar/

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