Subaru 2002 IMPREZA Service Manual page 1106

MECHANICAL
19.Cylinder Head Assembly
A: REMOVAL
1) Remove the V-belt. <Ref. to ME(TURBO)-44,
REMOVAL, V-belt.>
2) Remove the crankshaft
ME(TURBO)-46, REMOVAL, Crankshaft Pulley.>
3) Remove the belt cover. <Ref. to ME(TURBO)-
47, REMOVAL, Belt Cover.>
4) Remove the timing belt assembly. <Ref. to
ME(TURBO)-48, REMOVAL, Timing Belt Assem-
bly.>
5) Remove the camshaft sprocket. <Ref. to
ME(TURBO)-57, REMOVAL, Camshaft Sprocket.>
6) Remove the intake manifold. <Ref. to FU(TUR-
BO)-15, REMOVAL, Intake Manifold.>
7) Remove the bolt which installs A/C compressor
bracket on cylinder head.
8) Remove the camshaft. <Ref. to ME(TURBO)-59,
REMOVAL, Camshaft.>
9) Remove the cylinder head bolts in alphabetical
sequence shown in the figure.
CAUTION:
Leave bolts (A) and (D) engaged by three or
four threads to prevent the cylinder head from
falling.
CYLINDER HEAD ASSEMBLY
pulley. <Ref. to
B2M1397C
ME(TURBO)-64
10) While tapping the cylinder head with a plastic
hammer, separate it from cylinder block.
Remove the bolts (A) and (D) to remove cylinder
head.
11) Remove the cylinder head gasket.
CAUTION:
Do not scratch the mating surface of cylinder
head and cylinder block.
12) Similarly, remove the right side cylinder head.
B: INSTALLATION
1) Install the cylinder head and gaskets on cylinder
block.
CAUTION:
• Use new cylinder head gaskets.
• Be careful not to scratch the mating surface
of cylinder head and cylinder block.
2) Tighten the cylinder head bolts.
(1) Apply a coat of engine oil to the washers and
bolt threads.
(2) Tighten all bolts to 29 N·m (3.0 kgf-m, 22 ft-
lb) in alphabetical sequence.
Then tighten all bolts to 69 N·m (7.0 kgf-m, 51 ft-
lb) in alphabetical sequence.
(3) Back off all bolts by 180° first; back them off
by 180° again.
(4) Tighten the bolts (A) and (B) to 34 N·m (3.5
kgf-m, 25 ft-lb).
B2M1397C
B2M1397D