BMW 5251 Service Manual page 176

1
13-82
1
Cylinder Head Removal and Installation
4
Reinstall cylinder head covers to right and left cylinder heads
using new gaskets.
Check for correct seating of half-moon seals (A) in back of
cylinder head cover.
Use a small amount of Three Bond 1209
8
or equivalent
sealer at corners
(B)
of half-moon cutouts.
-
Install cylinder head cover fasteners and tighten uniformly in
'I2
turn steps.
Tightening torque
Cvlinder head cover fasteners
10 Nm ( 7 . 5 It-lb)
-
Install exhaust manifolds using new gaskets and fasteners.
See 180 Exhaust System.
-
Refill and bleed cooling system as described in 170 Radiator
and Cooling System.
-
Change engine oil and filter as described in 020 Mainte.
nance.
CA UTIOW-
To prevent damaging engine electricalsystems, be sure to in-
stall all ground wires previously removed.
Tightening tOrqUeS
Camshaft sprocket to camshaft 15 Nm (1 1 ft-lb)
Coolant manifold to cylinder head
lo
Nm (7.5 It-lb)
Cylinder head cover nuts
10 Nm (7.5 ft-lb)
Exhaust manifold to head 22
Nm (17 ft-lb)
Engine mount to subframe
42
Nm (30 ft-lb)
Spark plugs to cylinder head 22
Nm (17 ft-lb)