BMW 5251 Service Manual page 313

Camshaft Timing Chain
4
Replace primary timing chain tensioner oil supply seal
(ar-
row)
in right cylinder head.
-
Install right upper timing chain cover to engine:
Remove old gasket from left timing cover.
Clean gasket groove and install new gasket.
Apply Three Bond 1209Osealant to joint between cylinder
head and timing cover.
Fit timing cover into position on engine and install lower in-
side cover retaining bolt
Timing cover retaining bolts finger tight.
4
Remove cylinder head cover sealing gaskets from right cylin-
der head cover. Install BMW special tool 11 1 41 1 into gasltet
groove of cylinder head cover.
Install 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 side cylinder bank).
Tighten nuts uniformly in
'Il
turn steps.
NOTE-
BMW special tool 11 1 4 11 presses upper timing cover to cyl-
inder head to aid in proper sealing of timing chain cover to the
cylinder head gasket.
Tightenlng torque
Timing case cover to head 15 Nm (1 1 It-lb)
-
Remove special tool 11 1 41 1 and install new gaskets to cyl-
inder head cover:
Clean gasltet groove and install new gasltet.
Apply Three Bond 1209 Osealant to joint between cylinder
head and timing cover and at half-moon shaped cut-outs.
Tighten cylinder head cover nuts.
Tightenlng torque
-
Cylinder head cover to head
15
Nm
(1
1
ft-lb)