BMW 5251 Service Manual page 131

Cylinder Head Removal and Installation
I
Remove cylinder head cover mounting studs (arrows) from
center of cylinder head.
-
Remove crankshaft loclting tool from transmission bell hous-
Ing.
Lift primary chain and hold under tension, then rotate engine
at vibration damper in opposite direction of normal rotation
(counterclocltwise) approximately 30".
CAUTION-
By turning crankshait3O0, pistons are movedaway from top
dead center, to prevent possible valve interference to pistons
during camshaft servicing.
-
Remove camshaft loclting tools (BMW special tool set 11 3
240) from rear of cylinder head.
4
Remove camshaft bearing cap 1 on intake camshaft.
4
Fit BMW special tools 11 3 260 (A) and 11 3 270 (B) to cyl-
inder head and screw long bolts (arrows) into spark plug
threads. Tensioning pins on tool will align with the bearing
caps on the intake camshaft.
CAUJION-
Do not over torque bolts into sparkplug holes.