On the DC07, the entire cyclone assembly must be removed to empty the dust, debris, etc. collected when vacuuming. On the top of the cyclone is a "trigger" that you lift with your finger to release the bottom catch, which allows a clear flap to open on the "clear bin," thus letting all the debris fall out. My problem is when you lift the finger trigger, it does not release the catch on the bottom. Since the catch won't release, I cannot remove the entire clear bin either from the cyclone.Any suggestions?

Beofre you go to the extent of buying a replacement canister, you can remove the top and using a straightened coat hanger type thing open that bottom lid. Then maybe you can clean the rim and possibly add some silicone spry to loosen things up. Here's how to get inside In this order: 1) Remove the canister 2) remove the three star screws at the top of the canister. It'll take a bit of pressure to pull the top up, there's a rubber seal. When you pull it up there will be a rod running down into the canister, leave it be, just pull up the top high enough to clear out any debris. 3) Use a straightened coat hanger and with a flashlight to guide you, reach down with it and push it into that hole down at the bottom center of the canister. That will pop the lid open. Clean the canister & lid rims, maybe add some silicone. At this point you might as well clean the canister too. OPTIONAL-> ***leave the bottom lid open*** and follow the rest of these steps 4) Put the top back on aligning the screws, when you lower it make sure the bottom of the rod engages with the hole at the bottom center of the canister, this is why you left the bottom lid open. Put the three star screws back in. 4) Turn the canister upside down, lid open, and keeping in mind this is thin plastic, gently tug upwards on the four fins that surround the bottom rubber seal. This part is held in by friction, so work your way around the four fins gently pulling until you work the ring they're connected to free. This will give you access to the inside of the canister. 5) remove the round perforated section by tugging upwards on it, set it aside with the fin part. 6) Take the canister to a laundry tub or large sink and holding it bottom up fill it with hot/warm water. Grasping the center section shake it vigorously and turn it upside down while shaking and a bunch of sh*t will come out. Repeat several times. 7) Dry thoroughly, you might use a hairdryer held to the center tube, but only if you can switch off the heat and use air only. Make sure its 200% dry, water will kill your machine 8) clean and replace the round perforated section 9) replace the fin section, I'd suggest pulling the round rubber part off of the fin part and setting it in place on the canister first, then follow with the plastic fin part. If you don't do it this way the rubber won't seat properly and the bottom lid won't close. 10) Close the lid, replace the canister, and staaaaaart suckin like it's brand new.

The clip that pushes the bag door open inside the bottom of the cyclone might be broken. its hard to get these apart without breaking the cheap plastic that dyson uses so be gentle but you will have to pry the lid open if the rod wont let it drop. If that clip is broken i think you will have to replace the whole cyclone assy because dyson doesnt sell the parts separate. let me know if you have any more questions.