on the Chrysler engine (420a) you do need a puller and installer to deal with the crankshaft dampener pulley.
if its sohc it doesnt have , if its dohc its behind the lower damper i think
The "balancer" mounted to the front of the crankshaft is also called a vibration damper.
you just need a puller to take it off, it's not a special puller.
No Because it is made out of rubber
The crankshaft damper is behind the crankshaft pulley.
Drop the engine by removing the passenger motor mount
if it has a distributor, its in the distributor, if no distributor its at the front of the engine by the crankshaft damper
You need a special harmonic damper puller. It's a variant of a basic 3-jaw puller that it made stronger so that it wont break.
You need to use a puller tool. The trick is not to pull against the stamped center of the damper that looks like a washer. You need to thread the crankshaft bolt out a bit and push against the bolt head.
The crankshaft position sensor is located at the front of the engine close to the crankshaft damper
It depends on what you're trying to accomplish, more info please.