Harmonic balancer.

[TopNotch]

FYI, it is not recommended to use an impact wrench to remove the balancer. You might get away with it on a V6, but on a duke, you'll likely break the fiber camshaft gear. And on a V6, you'll be banging the timing chain hard in the reverse direction.

How should the balancer be removed?

It might take two people. Wedge a large flat bladed screwdriver or pry bar against the teeth of the flywheel, and use a socket and breaker bar on the balancer bolt.

[GTRS Fiero]

I'm just wondering if the harmonic balancer could be jammed in place, while being removed.  Some pullers have two bolts that turn on either side, in opposing directions.  Supposedly, the balancer has a specific puller.

[PK]

I managed ok on my own.  Pry bar to flywheel to remove belt pulley and centre bolt and then use centre bolt hole and belt pulley holes to attach puller.

If there was a way of wedging the HB directly it probably wouldn't be healthy to have an uneven force on it while trying to extract from crank.

[Fierofool]

Pull the plugs from cylinders 1, 3, and 5.  Drop a hand full of little sockets into each cylinder.  That will prevent the engine from turning while loosening the harmonic balancer bolt. Fish them out with a magnet, later.     

[GTRS Fiero]

Yeah...not.

[scottb]

Pull the plugs from cylinders 1, 3, and 5.  Drop a hand full of little sockets into each cylinder.  That will prevent the engine from turning while loosening the harmonic balancer bolt. Fish them out with a magnet, later.     

Is that where all of the 10MM went?

[GTRS Fiero]

No.  I broke them.  The hardware store orders them for me in bulk.   

[Fierofool]

Pull the plugs from cylinders 1, 3, and 5.  Drop a hand full of little sockets into each cylinder.  That will prevent the engine from turning while loosening the harmonic balancer bolt. Fish them out with a magnet, later.     

Is that where all of the 10MM went?

It takes 8mm and smaller.  10mm won't fit in the hole.