Introduction
Tools
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            Open the chuck jaws to the largest diameter. Remove the interior chuck screw using the T20 Torx screwdriver. 
 
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            Hit the Allen wrench with a mallet or hammer to loosen and remove the chuck. 
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            Hit the Allen wrench from above. Chuck spindle threads are conventional and loosen counter-clockwise. 
 
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            Remove the chuck from the drill. 
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            Check chuck and chuck mount for damages or debris. 
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            If replacing chuck, attach new chuck and check functionality. 
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            If clearing debris from a jam, make sure chuck mount is clear before reaataching the chuck and checking functionality. 
 
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To reassemble your device, follow these instructions in reverse order.
8 comments
If Allen wrench loosens the truck clockwise as written wouldn’t you be hitting it the other way ? Not sure if I’m not understanding correctly or reading something wrong. Thank you
Jan M -
I agree with Jan. This does not make sense to me and i have been twisting this stupid thing for 3 days.
Your comment ‘The chuck screw is reverse threaded, which means you will need to unscrew it counterclockwise. ‘ is nonsense.
A normal screw is counterclockwise to unscrew.
What you meant to say was
‘The chuck screw is reverse threaded, which means you will need to unscrew it clockwise. ‘
You might also like to add the the screw is often coated with loctite and very difficult to remove. A high quality tool and plenty of force may be required to remove this screw.
I think the clockwise thing wasn’t that hard to understand, but personally, my chuck screw was actually quite easy to remove so it wasn’t a problem for me
J .Healy -
Although you specify "reverse threaded", you confuse the issue by saying "counterclockwise." You mean counterclockwise from the drill's perspective, but that's counter-intuitive. Many folks will assume clockwise or counter from the screwdriver's perspective. It would help to make that clear. Same applies to step 3 where the photo makes it clear you mean clockwise from the drill's perspective, but since your're unscrewing the allen screw, I would tend to interpret it from the allen wrench's perspective, which would be counterclockwise. Thanks for providing this instruction set.
Charles Key -
You need to Simply reverse counterclockwise and clockwise in your instructions
Mark -
You need to reverse counterclockwise and clockwise in your instructions
Mark -