BMW 5251 Service Manual page 209

Cylinder Head and valvetrain1
<
Place intake and exhaust sprockets in BMW special tool
11 6 180.
Position spline gap on intake sprocket (arrow) as
shown and place secondary chain on sprocitets.
<
Remove chain and sprockets from tool and slide sprockets
on camshafts. Confirm that gap in intalte sprocket splines
lines up with corresponding gap in camshaft splines (arrow).
CAUTIOI\C
Do not alter position of sprockets with respect to chain when
removinq from saecial tool 11 6 180.
4
While aligning locating tooth of shaft with spline gaps on
camshaft and sprocket, slide spiined shaft onto intalte carn-
shaft until approx.
1
mm (0.04 in.) of splines (arrows) are
visible.
4
lnstall intake camshaft spring plate so that FRONT mark is
visible. install mounting nuts (arrows) finger tight.