BMW 5251 Service Manual page 206

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Cylinder Head and Valvetrain
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4
While maintaining tension on timing chain, rotate crankshaft
at vibration dampener from
30"
before TDC in direction of ro-
tation (clockwise) until number 1 cylinder is at TDC position
with line between the OIT mark (arrow) on front pulley
aligned with boss on lower timing chain cover.
4
Secure crankshaft in TDC position with BMW special tool
11 2 300 (arrow).
Slide impulse wheel on intake camshaft, aligning boss with
raised portion on camshaft (arrow).
Fit thrust spacer (A) to intalte camshaft and tighten down with
threaded locating studs (arrows). Place longer threaded por-
tion of studs into camshaft.
Tightening
torque
Impulse wheel studs to intake camshaft (M7)
20
Nm
(15 ft-lb)