HEy Corky,
I may be wrong,but have you taken the left ahnd threaded screw out from the inside of the chuck?if you have/or have not you have to get that out,sometimes its a real toughy to get out .then you'll have to drill it out.
other than that the only other way I kno of is by cutting it off by using a metal chopsaw,first of all you need to insert a screw driver into the chuck when the jaws are open until it touches the back of the inside,then make a mark on the screw driver where it is just outside of the chuck,then you use that measurement on the outside,and you now make a mark on the outside of the chuck,and thats where you'll cut with the chopsaw,after that the chuck should be easier the knock off wit a old cold chisel or punch.
if it won't come off still.you may wanna lock the machine in a table vice(be careful not to over thighten,or you cud crak the machine's casing) then take a small angle grinder,and you slowly gring the top part of the chuck away,then you do the same thing to the oposite part of that ,and the two halves shud be able to come off.
Good luck
Quincy
Guyana
South America
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