The extended wand will not lock into place on my Dyson DC23 vacum

SOURCE: Dyson DC-07 Hose Wand Spring Came Out. How to put back in?

You'll see that there is a round piece with a cross shape on the inside of the button wand release button - place the end of the spring over the cross - you'll see the same cross on the collar of the machine...it'll take some doing, but line the other end of the spring up with the cross and pop the button back into place - be sure to click it onto those two gray circular/oval shaped divets at the bottom where the release button connects to so that the button stays in place.

SOURCE: My telescopic wand height adjustment won't lock

These wands have a very small nub that locks them into place. They wear out very easily. You might have to replace the wand.

SOURCE: extendable wand difficult to entend

try USE WD-40 (http://www.uline.com/images/en-us/transparent.gif ) to spray ....Wand Assy and Hose Assy.....

SOURCE: hi my dyson dc18 has great suction from wand but

My Dyson dc18 had the same symptoms. The wand worked well and the floor bar had no suction. After removing pieces & shoving my fingers into the machine (no blockage) I found the suction pipe rotates between two positions (floor and wand). It looks like a piece of plastic broke on the outside housing, so it no longer rotates positions when the wheels are raised or lowered. My son found we can move the suction by sliding a finger into the mechanism behind the wheel cover, and rotating the plastic piece clock-wise or counter clock-wise until it locks into position. It's a big pain but it works for now. I wish I could find a replacement piece online. Patty