how to remove crankshaft pulley

Sounds good... Now you may have to get a differen't puller to get timing gear off the crank.. If the crank has ever been turned your bearings should have the size on the back of them like .010 or .020 an so on...

In 40 years of working on la blocks; never needed a puller for a timing gear.
Maybe you need to correct the memory of your notes on the computer.