Crank pulley help

[Cbray2003]

So don't know how but the keyway has broke on the aux pully end and needs changing but can't get it out so how do I get the crank pulley off if I lock timing and remove belt should it just slide of the shaft thanks in advance 

[Seb_Ryan]

No need to lock timing to remove crank pulley.. Bolt out of middle and lots of wiggling and prying it off

[Cbray2003]

The aux crank pulley has snapped off and gone I need the timing crank pulley off the change the keyway