Fit exhaust camshaft splined sleeve,
aligning gap in sleeve splines with
corresponding gap on camshaft splines
(arrows).
Slide splined shaft onto exhaust
camshaft, aligning larger tooth with
corresponding gap of splined sleeve.
Slide splined shaft in further until
3 small slots in splined sleeve are
centered on 3 threaded holes in
sprocket.
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 sprockets.
Carefully remove chain and sprockets
from tool and slide onto camshafts.
Align gap in intake sprocket splines
with corresponding gap in camshaft
splines (arrow).
CAUTION!
Do not alter position of sprockets
with respect to chain when removing
from special tool 11 6 180.
Slide splined shaft onto intake
camshaft until approx. 1 mm (0.04 in.)
of splines can still be seen.