M62 B46 only:
WARNING: This page is about a different variant/trim than selected.
Lightly coat pistons and piston rings with oil.
Align contact points of piston rings (offset at approx. 120°, but not over piston pin lug).
Compress piston rings with special tool 11 9 500.
Keep piston rings compressed with special tool 11 9 500.
Install piston so that arrow points to camshaft drive.
IMPORTANT:
Danger of piston ring failure.
Press in piston only with finger force (do not knock in!).