Bd142 drill spec

I just had the identical problem with my HJP001, and managed to solve it piecing together info from this thread. The cause for the chuck to jam was that the retaining screw had come loose and was interfering with the chuck. As others have pointed out, the retaining screw has a left-hand thread, ie reverse from most screws, which obviously needs to be taken into account. Simply tightening the screw solved my problem - together with some WD40 ;-)

Not the chuck apparently, This could well be reverse threaded, many drills are, some aren't. There is generally a screw in the bottom inside of the chuck and then the chuck itself can be threaded on.

if its a reversible drill there will be a screw in the bottom of the chuck, open the jaws as far as they will go and you should see a screw head, it is a left hand thread so put the drill in low speed selector this will stop chuck turning as easily, then turn screw clockwise as your looking at the chuck, when its out put an allen key in and tighten up the chuck hit with hammer now in a anti clockwise direction it should unscrew. repeat in the reverse procedure to fit new chuck....

If you man changing the chuck, take out any drill bits and look down into the chuck. You will see a screw holding it on. On many drills this screw has a reverse thread so it loosens in the opposite way to regular screws. You have to undo this screw to remove the chuck, then fit a new one of the same spec or one suitable for the drill and reassemble in reverse order.

Not entirely familiar with this model but most chucks are secured by a screw inside the chuck. Open the the chuck to its fullest aperture and look inside. There should be a centre screw ... it will be a left hand thread. Remove the screw. Hold the chuck firmly, reverse the drill. The chuck should unscrew from the shaft. Installation is a reversal of the removal procedure.

this can be a problem if you have been using reversible drill bits in chuck as they tend to drill out screw head when drill bit jams if this has happened you may have to drill screw and use an easy out remember it will probable be a left hand thread

There are one-way (non-reversible) and two-way (reversible) drills. Mine is one-way. Methods for chuck removal are different for these two types.
Procedure for one-way (non-reversible) drills:
Drills of this type have no chuck screw, so one have to hold the spindle with a wrench, than to sharply strike the wrench with a hammer to spin it off.
Procedure for two-way (reversible) drills:
Open the chuck up and in the bottom is a screw that holds the chuck on the shaft.The screw turns in a clock wise motion to be removed and then you can top the chuck off the shaft.

I did a little hunting and it seems you really want to use your 110v charger on a 230v supply.....

So you could use a transformer (LINK)

or you could get a local power supply pack.

Read the label on back of power pack that attach's to wall socket and charger base, see what input it can handle, some gear can handle like 110v-230v, others cant ie will read 120v

Any adaptor that puts out the same output as the original would work ie 18v DC 2.5 amps is your specs i beleive so use a transformer or another suitable adaptor

Please check my quoted specs are the same as listed on power pack of your charge ie I am assuming you are using your 110v A.C. to 18v 2.5amp D.C power pack

all you needs is a step tranformer from 110v to 220v ac

Your problem is with the screw holding the chuck onto the shaft. That screw if a reverse thread and needs to be tightened in reverse direction.