BMW 5251 Service Manual page 300

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Camshaft Timing Chain
-
<
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 im-
pulse wheel while tightening mounting nuts (arrows) finger
tight.
4
Install BMW special tool 11 6 150 (VANOS setup bracket) to
front of cyl~nder head timing case.
Tighten tool mounting nuts (arrows) by hand, then tighten
down uniformly until special tool is firmly contacting cylin-
der head.
CAUTION--
Male sure allgasl(et material is removed from face of cylin-
der head. Clean sealing face and keep free of oil.