You do not need to separate the timing chain. The sprocket unbolts from the end of the cam shaft. Zip tie the chain to the sprocket in multiple places to preserve the timing. The sprocket is keyed to the cam so it can only go on in the correct position.

__________________
1998 E300 turbodiesel

America's Rights and Freedoms Are Not The Enemy!

Are you sure it’s a turbo head? Are you sure it’s in good shape? Shipping might cost more than the head.

Sixto
98 E320s sedan and wagon

Machine shop, Motor Work Inc. in San Diego, said bring the head down and they may be able to save it, fingers crossed! Now I just have to pull the thing out, time for tons of pictures maybe I'll make a tutorial for others

There are several 606 head removal threads already here, do a forum search. Always room for one more of course, but the existing threads may contain some wisdom that could prove useful for you. I have done it once before, following the FSM to the letter, and it wasn't horrible but it is a lot of hours of work. There are many small rubber parts and other bits that you're want to replace "while you're in there". Also the head is HEAVY so you'll want a friend to help when you get to actually lifting it off, and lifting the repaired head back into place.

__________________
1998 E300 turbodiesel

America's Rights and Freedoms Are Not The Enemy!

I do intend to take my time, take lots of pictures forreference, and order things as I go while I'm in there. The machine shop said if they can save the head I can get all the valve guides and seats done, so why not. I did get the Alldata DIY subscription and it seems pretty detailed. Would you recommend getting a 1 day subscription to startek and print, or just use alldata?