Frode,
Perhaps a photograph will help?
The pilot bearing sits in the end of the crankshaft.
The flywheel is bolted to the same end of the crankshaft. The end of the crankshaft is a close fit into the hole in the center of the flywheel.
Three pieces - crankshaft, flywheel, pilot bearing.
Does your engine look different from this photograph?
Larry
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