How is the dirt canister removed from the Dyson DC39 vacuum please?

It sounds like the axle connections have gotten dirty or bound with animal hair or other material. Cleaning the axles can resolve this issue. Contact Dyson for assistance here:
http://www.dyson.com/support/repairsandservicinginformation.aspx

Ensure you have the correct model number and purchase date when talking with the representative.

Hi there, it's Jack at Dyson.

DC39's Trigger head floor tool is powered by a turbine, driven by your vacuum's suction. Following these simple checks should help you resolve any issues which could be preventing the brush bar from rotating as normal: http://www.dyson.co.uk/support/dc39/dc39-animal/machine-is-not-working/trigger-head-not-working/dc39-check-the-brushbar/dc39-check-triggerhead-tool

If you'd like further help from our experts after giving this a try, please get in touch with us directly by calling 0800 298 0298 (UK), 1-866-693-9766 (US), 1-877-397-6622 (CA) or 1800 239 766 (AU). If a replacement part is needed, we can also confirm if this is covered under your Dyson parts and labour guarantee.

Hi there, it's Jack at Dyson.

I'm sure we can help with some advice on cleaning and maintaining your DC39, but can you please confirm if there's a specific part of the machine you need help cleaning? The advice will differ according to which part of the vacuum you're concerned about.

Alternatively, you're welcome to call our experts directly on 0800 298 0298 (UK), 1-866-693-9766 (US), 1-877-397-6622 (CA) or 1800 239 766 (AU).

Remove brush bar cover...is the belt broken, cut or stretched to the point of being ineffective? Is the brush bar full of hair or string?
Pull the belt forward...does the pulley spin? Turn the cleaner on
and see if the pulley spins...if it does I think a new belt will be needed.
Be sure to buy the right one.

Regards,
Dennis


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turbo brush on these models last about 1 year replace it

Dyson dc39 manual on link below
http://www.dyson.com/medialibrary/Files/Dyson/Support/downloads/US/Floorcare/manuals/dc39_us_manual_TRH%20pdf.pdf

Hi Paula, it's Jack at Dyson.

Like most Dyson vacuums, DC39 is engineered to shut itself down for protection if it starts to overheat. This will usually be due to a blockage, and the filter may also need a wash.

You should find the machine will reset itself after it's had at least three hours to cool down. But to prevent any damage to your vacuum, please give the filter a wash, and check for any blockages.

To check for any blockages in the floor tool, wand, hose or hose inlet, please follow the steps shown in our online Support guide: http://www.dyson.com/support/dc39/dc39-animal/diagnosis-root-menu/performance-flo-extension-tube-suction-check-dc39

DC39's filter should be washed once every three months in normal use, as shown in the video below. Use cold water without detergent, and allow up to 24 hours for the filter to dry completely before replacing it.

I'm confident this will resolve the issue, but if you'd like any further advice after you've given this a try please call our experts directly on 0800 298 0298 (UK), 1-866-693-9766 (US), 1-877-397-6622 (CA) or 1800 239 766 (AU).

The belt that turns the rotating brush is loose. Make sure it is on correctly or replace with a (new) tighter belt. This will require you to unscrew a few screws on the bottom & remove the cover. Then remove the roller.