BMW 5251 Service Manual page 199

11 6-23
Cylinder Head and Valvetrain
Place timing chain on end of exhaust camshaft
4
Do not remove end spline retaining screws from camshafts
(arrows).
CAUTION-
The end spline retaining screws precisely locate the end
splines to the camshafts. Do not loosen these screws.
Remove locating studs (arrows) from intake camshaft. Lift
off intake camshaft thrust spacer (A) and impulse wheel (B)
4
Remove cylinder head cover mounting studs (arrows) from
center of cylinder head.
-
Remove crankshaft locking tool (BMW special tool 11 2 300)
from cranltcase.