BMW 5251 Service Manual page 227

-
- .
Cylinder Head and valvetrain1
Install exhaust camshaft bolts (arrows) finger tight.
Remove secondary timing chain tensioner loclting tool.
<
Fit secondary sprockets and chain to camshafts on left cylin-
der head. Center slots in sprocltets to threaded bores in end
of camshafts (arrows).
Insert exhaust camshaft bolts (arrows) finger tight in exhaust
camshaft on left cylinder head.
Remove secondary timing chain tensioner locking tools from
chain tensioners.