I removed the screw inside the chuck, but the part that closes around the drill bits will not close shut. preventing from pulling the chuck off the shaft
If it won't close the only other option you have is to break the outer collar and use a chisel to hit on the exposed jaws inside the chuck. I have detailed instructions in the tip section on how to remove a chuck from these drills. Let me know if you need more assistance.
SOURCE: porter cable 884 cordless drill
Most chucks have a tolerance the cordless drills where designed for drill bits 1/8 and larger the 3/8 chucks are a little better with the smaller bits .Check your owners manual and see if they have a min requirement listed for the bit size
SOURCE: bosch 18volt brute force cordless drill how do i remove chuck
Put the screw back in the chuck, tighten it up then back it out 1 turn. Take a punch, put it in the chuck and give it a quick hit with a hammer. That should do the trick.
SOURCE: Dewalt Drill DC728. Chuck came out of drill body
If you find that the end of the screw inside the chuck is actually broke then you have a gear problem inside your drill. This is actually a very common problem. Sometimes people push too hard on their drills and the gears inside wear out and break. This prevent the motor from wearing out, but, the gears have to be replaced.
If it is the gears and not the chuck. you broke the minimium of the front gear or gears inside your drill. YOU CANNNOT repair gears. they need to be replaced. you may be able to find some off brand gears to work but, you run the risk that they are not as strong as your original ones, or may not be exactly grooved correctly.
so, if replacing your chuck does not work. find replacement gears. IF you cannot find the gears from the manufacturer see about replacing your drill.
If the chuck is still good, keep it. If you buy the same model, keep your old drill for replacement parts, ie, switch, armature, cord, etc.
hope this helps somewhat.
SOURCE: Cordless Drill, Keyless Chuck stuck in full open position.
if chuck is wide open ,look down inside there should be an allen screw or bolt at the bottom of the chuck it should undo anti clocwise and the chuck comes off
SOURCE: Black and Decker Cordless Drill Chuck stuck in full open position
I'd put penetrating oil in it and tap the chuck with a plastic hammer. That should free it up.
Best rgrds, W/D
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