Subaru Legacy 2005 Service Manual page 1128

MECHANICAL
20.Cylinder Head
A: REMOVAL
1) Remove the V-belts. <Ref. to ME(H4DOTC)-40,
REMOVAL, V-belt.>
2) Remove the crank pulley.
<Ref. to ME(H4DOTC)-43, REMOVAL, Crank Pul-
ley.>
3) Remove the timing belt cover.
<Ref. to ME(H4DOTC)-45, REMOVAL, Timing Belt
Cover.>
4) Remove the timing belt.
<Ref. to ME(H4DOTC)-46, REMOVAL, Timing
Belt.>
5) Remove the cam sprocket.
<Ref. to ME(H4DOTC)-54, REMOVAL, Cam
Sprocket.>
6) Remove the intake manifold.
<Ref. to FU(H4DOTC)-12, REMOVAL, Intake Man-
ifold.>
7) Remove the bolt which installs A/C compressor
bracket on cylinder head.
8) Remove the camshaft. <Ref. to ME(H4DOTC)-
56, REMOVAL, Camshaft.>
9) Remove the cylinder head bolts in alphabetical
sequence shown in the figure.
Leave the bolts (A) and (D) engaged by three or
four threads to prevent the cylinder head from fall-
ing.
(D)
(B)
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.
(D)
(B)
Cylinder Head
(F)
(A)
(E)
(C)
ME-00122
(F)
(A)
(E)
(C)
ME-00122
ME(H4DOTC)-62
11) Remove the cylinder head gasket.
CAUTION:
Be careful not to scratch the mating surface of
cylinder head and cylinder block.
12) Similarly, remove the cylinder head (RH).
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, 21.4
ft-lb) in alphabetical sequence.
(3) Retighten all bolts to 69 N⋅m (7.0 kgf-m, 51
ft-lb) in alphabetical sequence.
(4) Loosen all the bolts by 180° in the reverse
order of installation, and loosen them again by
180°.
(5) Tighten all bolts to 49 N⋅m (5.0 kgf-m, 36 ft-
lb) in alphabetical sequence.
(6) Tighten all bolts by 80 — 90° in alphabetical
sequence.
(7) Tighten all bolts by 40 — 45° in alphabetical
sequence.
CAUTION:
Do not tighten the bolts more than 45°.
(8) Further tighten bolts (A) and (B) by 40 —
45°.
CAUTION:
Ensure the total "re-tightening angle" in the
[former two steps] does not exceed 90°.
(C)
(E)
3) Install the camshaft. <Ref. to ME(H4DOTC)-57,
INSTALLATION, Camshaft.>
4) Install the A/C compressor bracket on cylinder
head.
5) Install the intake manifold.
<Ref. to FU(H4DOTC)-14, INSTALLATION, Intake
Manifold.>
(A) (F)
(B) (D)
ME-00123