BMW 5251 Service Manual page 173

- 8 "
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Cylinder Head Removal and Installation
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Using crankshaft center bolt, rotate engine clockwise from
the 45" before TDC up to TDC position (OIT aligns with cast-
ing mark on cylinder block).
<
Lock crankshaft in TDC position with BMW special tool 11
3
200 (arrow).
NOTE-
Special tool boss located at the rear of upper engine oil pan.
-
Working at right cylinder head (cylinder 5-8) fit primary
sprocltet and chain to camshaft flange.
!
I
4
Press timing chain tensioner rail against timing chain (white
arrow) to check that fastener holes are centered in sprocket
slots (black arrows).
NOTE-
I f necessary, remove sprocl<et and realign position.
Fit sensor gear with mark pointing up (arrow).
Insert bolts and hand tighten.