Could someone please tell me how to remove the instrument cluster from a 1976 450SEL dashboard ?

On the left side, it is already loose and sliding (+/- 1") in and out of the dash. How many remaining bolts hold it in, and where are they located ? I figure I will also need to remove the connections for the gauges to slide the whole assembly out. How many of these ?

I am trying to clean the hands of the VDO clock, which have a black, sooty coating and are the only thing that stands between me and a pristine dashboard !!

Would sure appreciate any help or advice.

Bruce