I did it only the # 2 though. You enter from the back... NOT THE SIDE.
Use 1/4 inch drive 3/8 is too big. I thought entering from the side would work.. Boy was I wrong. Slept on it, then it seemed to work better with a clear head. I did pull the intake tube the crosses over the valve cover. Man was it dirty. I've got a manifold gasket I didn't use. PM me.
OM602 Pulling Intake to get to Glow Plug
Good luck.