Pull out exhaust camshaft splined shaft
to stop.
-
Press down on secondary chain
tensioner and remove tensioner
lock-down tool.
Preload primary chain:
Tighten adjusting screw on BMW
special tool 11 4 220 to specified
torque.
Tightening torque
Primary chain
tensioner preload
0.7 Nm (6 in-lb)
Preload exhaust camshaft spring plate
by pressing on impulse wheel while
tightening mounting nuts (arrows)
finger tight.
Install BMW special tool 11 6 150
(VANOS setup bracket) to front of
cylinder head timing case. Install nuts
(arrows) finger tight, then tighten down
uniformly until special tool is in full
contact with cylinder head.
CAUTION!