Top chuck just clicks but won't change bit size?

SOURCE: Drill chuck is frozen

You may try to put a thick soft metal pipe (aluminium or copper) over the drill bit (longer than the bit itself by ~10 mm) so it will touch the chuck's jaws, then GENTLY hit the other end of the pipe with a hammer several times, holding the pipe a bit askew, thus trying to disengage the jaws from the lock in their thread, and try to loosen the chuck after each series of hits. Just be careful with your fingers, and better hold the drill by the chuck while hammering it - so the hits won't go to the transmission unit (sorry for description - hope it's understandable, if not - ask for clafication from me)

SOURCE: keyless drill has locked in a closed position with the drill bit

I just put mine in reverse and grasp the chuck with a pair of channel locks. Pull the trigger and hold the channel locks tightly. The chuck will release the bit.

Testimonial: "Thanks for your solution - it worked great! Robert"

SOURCE: chuck will not release bit

Hi,

the Chuck should be 2 Part.

Use 2 pair of stillsons Or pipe wrenches, Tight On the 2 Chuck Parts, Crack in opposite Directions.

Alternative, Use Wrench On Chuck Jaw, Short sharp Blow With Hammer.

Mike @ compurepair.

SOURCE: chuck removal on a ryobi

go to my site and under the tips section there is a detailed description on how to remove this chuck

SOURCE: drill chuck swap

1. Turn the screw clockwise to take it out.
2. Then you needs 3/8 allen key & insert the short side of the allen key & tighten the chuck.
3. hold the drill at the edge of the table & wack the allen key
counter clockwise & do it again as needed.
4. dewalt keyless chuck will fit but you might add a washer to insure the chuck is not rubbing the clutch collar.
5. putting it back together the other way.