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The black thing at the end is the "keyless chuck". Grasp it just behind the silvery tip of the chuck with one hand, and grasp the knurled ring just behind THAT area with the other hand. Twist the "front" hand counterclockwise while you twise the "rear" hand clockwise. That will loosen the chuck so you can change bits.
To remove the bit with a keyless chuck, just turn the chuck to
the right (looking from the handle to the front) to open the jaws. To
put in another bit, tighten the chuck to the left to close. You have to
use both hands. You will see where the ridged portion of the chuck is in
two sections. Hold on to the back section with your left hand to keep
it from turning while you turn the front section with your right hand.
lot of the time I just push the button to put the drill in reverse,
hold on the front section of the chuck and turn it on. It will loosen by
itself. Then when you put the new bit in, put it in forward and hold on
to the chuck and press the switch. The bit will be in nice and tight.
Please place a vote when you accept this solution. Thanks, Handie Andie
try tapping on all sides of the chuck lightly with a hammer and wiggling the bit... you can also try to spray some oil into the chuck and see if that loosens the bit for you... You can also clamp the bit in a vise (or get someone with a pair of pliers) and pull, that will sometimes do the trick.
Drill a hole in the top of the phillips head screw with a 3/16 th's bit. Don't drill the head of the screw off, just drill deep enough for a torx bit to hold. Take a T-30 torx bit and tap in into the hole you have drilled. Then turn the screw clockwise and it should come out fairly easily.
Open chuck all the way (like for a large drill bit). There should be a set screw at the bottom (where you would put a drill bit). Don't turn too hard - it may be a left handed screw (I don't remember if it is a lefty for sure but try gently each way then with a bit more force each way until it moves).
hold the drill so the handle is facing you and the drill bit is facing away then twist the chuck clockwise. some quick chucks have two halfs in which case you hold the back collar (nearest you still) if its really tight it the drill bit into the chuck with something soft like a piece of wood so as not to damage the drill
I had this problem on my De Walt DW912- I simply couldnt turn the keyless chuck to remove the screwdriver bit and there was no obvious reason why.
I placed the unit on a solid surface so that the chuck/ drill bit was pointing vertical. I then used a mallet and a metal chisel to gently tap each of the 3 chuck jaws back into the chuck body. It worked!
Turned out that there was the absolute tiny amout of corrosion between the jaws, and the chuck and my tapping had just broken the siezure. I now remember that it started to rain slightly last time I used it.
Some spray release agent or perhaps WD40 would probably have done the same job but I wouldnt have believed so little corrosion could have done this so didnt realise this was the problem.