It doesn't take a lot of pressure to hold the valves up, but you will need a section of hose with a fitting that screws into the spark plug hole. Helpful to remove the fan so that access to the crank bolt is easier for turning the engine. I used 16 freezer bags labeled with cylinder numbers for my rocker arms and thrust washers so they got back in the right place. A good telescoping magnet is handy for removing and replacing the thrust washers and valve keepers. Ahh, if you are ordering parts, a few spare valve stem keepers are cheap to have around and may save an hour or two of searching for any you may drop--not that i had that experience!! Finally, the valve springs have a top and bottom, when they come off, stand them upright so they go back in the same orientation.

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Earl McLain
'02 C230 Kompressor
'89 560 SEL "Frau BlueCar" (retired April 2004)