BMW 5251 Service Manual page 197

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Cylinder Head and Valvetrain
Remove torx
(arrows).
screws from exhausl
:
camshaft : sprocket
Lift off exhaust and intalte sprockets together with secondary
chain, thrust spacer (A) from exhaust camshaft, and splined
shaft (B) from intake camshaft.
CAUTIOf+
Splined shafts share the same part number for both intake
and exhaust camshafts. Used splined shafts must be rein-
stalled in their oriqinal locations.
Place intalte and exhaust sprockets in BMW special tool 11 6
/
180.
Position spline gap on intake sprocket (arrow) as
shown.
4
Remove exhaust camshaft splined sleeve (A) and shaft (B).