How do you remove the chuck from a dewalt 12 volt dw953 drill

DEWALT DC935KA Power Tool Battery Replacement
Type: Ni-MHVolt: 14.4VCapacity: 3000mAhColor: BlackWeight: 940gDimension: 113.80x80.80x108.20mm

http://www.drillbattery.com.au/buybattery.php/dewalt_DC935KA_power+tool+battery.html

I would make sure that the bit is firmly installed in the chuck, you should hear clicking when the bit is tightening, this is the chuck locking itself on the but. and when going in reverse make sure you dont have your hand or have the chuck pressed against an object. If nether of these are the problem then there may be a problem with the chuck itself and should be replaced.

down inside the chuck head itself is a allen head screw,, it has reverse threads on it. if you have already removed this screw and the chuck is still stuck then you will need to use a small gear/pulley puller to get it to release.
(( note: if you do not have access to a puller -- stop by you local Dewalt repair shop and I am sure that they will pull the chuck off with their puller at no charge to you )).


c...

I think that if you open the chuck as wide as poss there is a screw up in the inside if the chuck thinkk its a slotted head screw undo this and chuck will come off

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.

first remove the chuck retaining screw LH thread, next shift the tool to the drill only position and the low side. Find a bent handle allen wrench and insert the short piece into the chuck and clamp down, place the chuck with the long portion at about a 30 degree so you can strike it counter clockwise, usually a block of wood or work bench will do and then get a hammer and safety glasses and hit it, it might take a couple times but it will come off

Inside of chuck you have a screw, remove screw then tighten an big allen wrench into chuck, short side in, then hold drill and hit allen wrench with a hammer quickly, should break chuck free.

I work in a large shop and I do most of the tool repair.  We do use DeWalt cordless guns so I have done this before.   I change these as often as they break at work.  About every 4 months the teeth fall out of a chuck and I replace the chuck with a new one.       To remove this chuck you should  use a heavy duty metric allen key and a good vise. The trick is to remove the small metric reverse thread screw. It is between 3 and 5mm.  Place the "L" of the allen key firmly in the vise with the long end pointing straight up.  Open the chuck all the way. Using a fully charged battery, place the gun in low (1st gear) and put the direction of the gun in FWD (as if you were driving a screw in), set the clutch to the drill setting (maximum torque) and drive that screw out of the chuck.  If the battery is not strong enough to drive the reverse thread screw out you will have to help it out.  Rotate the rear of the chuck clockwise and hopefully the screw will come out.  If that is not enough torque, I find the use of a small strap clamp helpful to turn the chuck against the reverse screw. Hope this helps.  Best Results!  Michael Mittelsdorf

I just changed the chuck on my 18 volt xrp half inch hammer drill,yes first you must remove the torx screw with #15 torx bit,note this is a left handed thread screw,knowing the bad chuck was bad I added some heat from a propane torch to the chuck then making sure it was in 1st gear i took some vise grips and the chuck is screwed on with normal right handed threads,it broke loose (was stubborn but needs a lot of torque )ahhhhhh wat a pain.

this 2 chuck are 3/8 jaw opening,double sleeve u can hold the chuck will opening it at the sametime.the sinlge sleeve u have to runs the drill while running slow rev/for to remove the bit etc.
i prefer metal sleeve.