thanks for the replies guys!

Im still a bit confused so I guess Ill try to find a manual. I see that they sell Mercedes Technical manuals and there are also Haynes manuals. Does any one care for one more then the other?

I also cant seem to find any chain tensioner to loosen up. There is in the image a black plastic chain guid in the center of the two cam sprockets. The left sprocket seems to be attached by a few bolts and the sprocket to the right has quite a but of stuff built around it. The sprocket to the right also has a large tab welded to it which must be for some type of timing adjustment.

Any other direction on this head removal will be most helpfull.
I'll post more photos of the removal as soon as I have some progress.

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Simon Mestas