BMW 5251 Service Manual page 230

11 6-54
Cylinder Head and Valvetrain
Replace primary timing chain tensioner O-ring (arrow) in
right cylinder head.
-
lnstall right upper timing cover to engine:
Remove old gasket from right timing cover.
Clean gasket groove and install new gasket.
Apply Three Bond 12098sealant to joint between cylinder
head and timing cover. Install remaining timing cover bolts
finger tight.
lnstall left upper timing chain cover to engine:
Remove old gasket from right timing chain cover.
Clean gasket groove and install new gasket.
Insert lower cover timing chain cover retaining bolt (arrow)
to cover, then fit cover to cylinder head.
Apply Three Bond 12098 sealant to joint between cylinder
head and timing chain cover. lnstall upper timing cover
bolts finger tight.
4
Remove cylinder head cover sealing gaskets from right cyl-
inder head cover. lnstall BMW special tool 11 1 41 1 into gas-
ket groove of cylinder head cover.
lnstall right cylinder head cover with BMW special tool 11
1 41 1 to right cylinder head. Fit cylinder head cover retain-
ing nuts to cylinder head cover studs at cylinders 1 and 2
(first two cylinders on right cylinder head).
Tighten nuts uniformly in
'I2
turn steps.
NOTE-
BMW special tool 11 1 41 1 presses upper timing chain cover
to level of cylinder head.
Tightening torque
Cylinder head cover nuts
10
Nm
(7.5
n-lb)
-
Tighten right upper timing cover retaining bolts in two passes.
Tightening torque
Timing chain cover to head
10
Nm
(7.5
ft-lb)