BMW 5251 Service Manual page 187

Cylinder Head and Valvetrain
4
Install intake camshaft oil baffle cover and cylinder head cov-
er:
=
Checlc for correct seating of half-moon seals (A) in back of
cylinder head cover.
Use a small amount of Three Bond 1209 @or equivalent
sealant at corners
(B)
of half-moon cutouts and corners in
front of cylinder head at joint to timing chain cover.
Align cover at front and rear, then alternatively tighten fas-
teners from inside to outside.
Tightening torque
Sparic plug to cylinder head 25 Nm (18 it-lb)
Ignition coils to cylinder head
10 Nrn (7.5 ft-lb)
Cylinder head cover to cylinder iiead
10 Nrn (89
in-lb)
fM6 screws)
CAMSHAFT
AND
LIFTER REMOVAL
AND ~NSTALLATION
The camshafts can be removed with the cylinder heads
mounted on the engine (in the car).
On 6-cylinder engines there are two different procedures giv-
en, depending on whether the engine is equipped with single
VANOS (M52 engine) or double VANOS (M52TU or M54 en-
gine).
For V-8 engines, camshaft removal and installation proce-
dures are only included for the non-VANOS (M62) engine.
Camshaft removal and installation for the VANOS eq;ipped
V-8 (M62TU) is not covered in this manual.
Special BMW service tools should always be used to remove
and install the camshafts. Removal of the camshafts without
the special tools can result in cylinder head damage and cam-
shaft breakage.