Subaru 2002 Impreza - Cylinder Head Assembly

CYLINDER HEAD ASSEMBLY
MECHANICAL
19.Cylinder Head Assembly
A: REMOVAL
1) Remove the V-belt. <Ref. to ME(D0HC TUR-
BO)-44, REMOVAL,
V- belt .>
2) Remove the crankshaft pulley. <Ref. to
ME(D0HC TURBO)-46, REMOVAL, Crankshaft
Pu Hey.
>
3) Remove the belt cover. <Ref. to ME(D0HC
TURBO)-47, REMOVAL, Belt Cover.>
4) Remove the timing belt assembly. <Ref. to
ME(D0HC TURBO)-48, REMOVAL, Timing Belt
Assembly.>
5) Remove the camshaft sprocket. <Ref. to
ME(D0HC TURBO)-57, REMOVAL, Camshaft
Sprocket.>
6) Remove the intake manifold. <Ref. to FU(D0HC
TURBO)-1
5, REMOVAL, Intake Manifold.>
7) Remove the bolt which installs the A/C compres-
sor bracket on cylinder head.
8) Remove the camshaft. <Ref. to ME(D0HC TUR-
BO)-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.
U U B2M 1397C
10) While tapping the cylinder head with a plastic
hammer, separate it from cylinder block.
Remove the bolts (A) and (D) to remove the cylin-
der head.
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B2M1397C
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 washers and
bolt threads.
(2) Tighten all bolts to 29 N.m (3.0 kgf-m, 22
ft-
Ib) in alphabetical sequence.
Then tighten all bolts to 69 N-m (7.0 kgf-m, 51 ft-
Ib) 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).
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n
ME( DOHC TU RB0)-64