Question about Dewalt DW0521 Quick Connect Impact Driver Conversion Chuck

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How to Remove Bit from Dewalt Quick Connect Adapter DW0521

Lost the darn instructions. How do I remove the bit? I'm holding the chuck and have it in reverse. No go


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  • joesss Jan 23, 2009

    This is the first time I've used my new DW0521 Quick Connect Impact Driver Conversion Chuck. I inserted a bit, tightened it up and used it. When I went to remove the bit the chuck just spins and does not release the bit. Am I missing something or is their a trick to it. My bit is still in the check. Maybe it is defective.

    Anyone have one of these?



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Hold the chuck by its sleeve, put the drill in reverse (make sure it's set at high torque if you used it in a drill/driver) and go full speed. That should release the bit.

Posted on Jan 29, 2009

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Can you provide the model number. Or if you want go to with the model number and you can download the instruction manual. Let me know.

Posted on Jan 06, 2009


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Dewalt instruction manual

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.

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How do I open the chuck or drill mouth to replace the drill present in my DeWalt Heavy-Duty 3/8? Keyless Chuck Drill?

Hi Tony,

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.

A 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.

Good luck.

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Handie Andie

Aug 19, 2011 | Dewalt Drills

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I have a DEWALT DC920 drill-driver and have a bit stuck in the chuck. The chuck adjuster appears to be stripped. Need to remove the bit and replace the chuck. Any ideas on how to get the bit released?

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.

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There are to parts to the chuck. You hold the ring at the edge of the chuck from turning, and then you turn the part after that, ccw to release.

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Remove existing phillips no chuck avalible in this model

Take a phillips screw driver and stick it into one of the key holes. Then take a flat head screwdriver and stick in one of the slots. And prise against the phillips.

Or you can wrap a belt or strap around the chuck hold it tight, then put the drill in reverse and unscrew it.

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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).

Good luck.

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How do I ''unlock'' and twist to change a drill bit

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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.
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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.

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