pull out the heads on 2002 Mercedes-Benz S600

I would like to replace the oil coolers where it require pulling of both heads. I got to the valve cover and I am not sure of how continue. should I take out the chain and how is it by taking of the valves ?? and how to remove the headers as it is hard to reach the lower nuts..

1 answer
Don't attempt to do this yourself, you don't have the knowledge to remove the heads (I know from your question - don't take it personally, I just don't want you to ruin your engine). Please find a MBZ specialist to do this for you.
If you want to find a specialist, here's a directory link for you:
https://repairpal.com/directory?address=53704&car_brand_names=Mercedes-Benz