I dont think this engine wants to go back in the car. I have another slight set back.
I installed the new chain, guides etc. Turned the engine by hand a few times and everything spot on. My 6mm "factory tools" nicely drop into place when crank is at 45 before.
Then tonight I installed the timing case cover with new O rings and using the usual Mercedes sealant that I keep. This is the stuff recommended for timing covers, its sticky, tacky and never really goes hard.
Then I installed the oil pump, upper pan and lower pan. I have a question about sealant so will start a thread on that.
I rotate the engine back around on the stand to its normal position and start packing tools away for the night.
I notice a rubber O ring perched on the camshaft pulley.
Took me a moment but I realised what happened.... I may have cursed a couple of times.
So now I need to undo all that work. This is not the problem. The problem is I have to wait for new sump gaskets from Mercedes which im sure will be a 2-3 day order.
Yes, yes, im glad I noticed it now rather than once installed, but I think this engine is really trying to get me back for messing with it.