BMW 5251 Service Manual page 214

I
Cylinder Head and Valvetrain
-
Remove adjustable primary timing chain tensioner tool and
reinstall primary chain tensioner cylinder to cylinder head.
Tightening torque
Primary chain tensioner cylinder
to
70 Nm
(52
ft-lb)
cylinder head
-
Remove flywheel locking tool from crankcase. Replace spe-
cial tool bore sealing plug.
-
Remove camshaft locking tools from cylinder head
Install intake camshaft cover and cylinder head cover.
Check for correct seating of half-moon seals (A) in back of
cylinder head cover.
Use a small amount of Three Bond 8 1209 or equivalent
sealing compound at corners (B) of half-moon cutouts.
Seat gasket and seal corners at VANOS unit with Three
Bond @ 1209.
Tightening torque
Cylinder head cover to cylinder head
(M6) 10
Nm
(89
in-lb)
-
Installation of the remaininq parts is reverse or removal, not-
-
ing the following:
Change engine
011
and f~lter as descr~bed in 020 Mainte-
nance.
Reconnect battery.
To prevent damaging the engine electronic systems, install
all ground wire previously removed, including the ground
wires for the ignition coils.
Tightening torque
-
Radiator cooling fan to coolant pump
40 Nm (30 ft-ib)
Spark plug to cylinder head
25
Nm (18 ft-ib)