I wanted to update this posting in case it helps somebody else someday.

I soaked the center of the Harmonic Balancer with PB blaster for a couple of days. The trick to getting it off for me was grabbing it at 2 o'clock and 6 o'clock positions and just working it off with opposing hand force. A puller was NOT needed in my case.

The center bolt did NOT have to come off for my 92 500SL M119 engine, just the surrounding 6 bolts.

Hope this helps someone else someday.

-Grant

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1992 Mercedes Benz 500SL
1998 BMW 528i
2003 Honda Element
2002 CBR600F4i
1977 Coachmen Motor Home