I read through the MBZ shop manual (for 1985 300D...123) regarding removal and replacement of head, and it all looks very easy. Since when I remove the head, I want to do a valve job, and down time is an important factor for me, I will probably buy a rebuilt head and just switch them. I would like to remove head on a Sat. and install the new one on Sunday. Hopefully I will have obtained all parts needed...new head bolts, gaskets for head, manifolds, turbo, etc., new seals for injectors, etc. I will also replace oil filter housing gasket at this time.

1) Is two days enough time for this? (I will probably take Friday off and start then.)

2) After detaching all accessories (just prior to lifting off the head) the MBZ manual says to detach the cam sprocket and slide rail, then lift off head. Am I correct in my understanding that it is not necessary to grind off a link in the timing chain and separate the chain?? Instead, it appears that the chain remains intact, and the sprocket and slide rail stays in place as you lift off the head. Is this correct? (my timing chain is new)

3) The screw for the slide rail needs to be removed by a special tool...threaded shaft with slide impct puller....it seems that this tool could easily be shop-made using the appropriate size bolt attached to the tip of a slide hammer ...I could weld a proper metric bolt to a threaded rod and make my own slide hammer. I that all that is involved??

4) Do I need a hoist to lift off and replace the head??? I assume it weighs about 75 pounds? Anyone done this using elbow grease alone??


Thanks

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1984 300TD Wagon, 407,800 mi (current daily driver)
1985 300DT Sedan, 330,000 mi (gone to that great autobahn in the sky)