Subaru Legacy (2005 year). Manual - part 279

ME(H4DOTC)-59

MECHANICAL

Camshaft

5) Rocker cover installation:

(1) Install the gasket on rocker cover. Install the
peripheral gasket and ignition coil gasket.
(2) Apply liquid gasket to the designated point
of cylinder head.

Liquid gasket:

THREE BOND 1215 (Part No. 004403007) or 
equivalent

(3) Install the rocker cover on cylinder head.
Ensure the gasket is properly positioned during
installation.

CAUTION:
Use a new rocker cover gasket.

(4) Tighten the rocker cover tightening bolts in
alphabetical sequence as shown in the figure,
and then tighten to the specified torque.

Tightening torque:

6.4 N

⋅

m (0.65 kgf-m, 4.7 ft-lb)

6) Install the oil pipe.

Tightening torque:

29 N

⋅

m (3.0 kgf-m, 21.4 ft-lb)

7) Connect the oil flow control solenoid valve con-
nector.

8) Install the spark plug cord.
9) Similarly, install the parts on RH side.
10) Install the timing belt cover No. 2 (RH).

Tightening torque:

5 N

⋅

m (0.5 kgf-m, 3.7 ft-lb)

ME-00776

ME-00777

(E)

(F)

(H)

(G)

(D),(L)

(A),(I)

(C),(K)

(B),(J)

ME-00712

ME-00808

ME-00107

ME(H4DOTC)-60

MECHANICAL

Camshaft

11) Install the timing belt cover No. 2 (LH).

Tightening torque:

5 N

⋅

m (0.5 kgf-m, 3.7 ft-lb)

12) Install the tensioner bracket.

Tightening torque:

24.5 N

⋅

m (2.5 kgf-m, 18.1 ft-lb)

13) Install the crank sprocket.
<Ref. to ME(H4DOTC)-55, INSTALLATION, Crank
Sprocket.>
14) Install the cam sprocket.
<Ref. to ME(H4DOTC)-54, INSTALLATION, Cam
Sprocket.>
15) Install the timing belt. <Ref. to ME(H4DOTC)-
48, INSTALLATION, Timing Belt.>
16) Install the timing belt cover.
<Ref. to ME(H4DOTC)-45, INSTALLATION, Tim-
ing Belt Cover.>
17) Install the crank pulley.
<Ref. to ME(H4DOTC)-43, INSTALLATION, Crank
Pulley.>
18) Install the V-belts. <Ref. to ME(H4DOTC)-40,
INSTALLATION, V-belt.>

C: INSPECTION

1) Measure the bend, and repair or replace if nec-
essary.

Specification:

0.020 mm (0.0008 in) or less 

2) Check the journal for damage and wear. Re-
place if faulty.
3) Measure the outside diameter of camshaft jour-
nal. If the journal diameter is not within specifica-
tion, check the oil clearance.

4) Measurement of the camshaft journal oil clear-
ance:

(1) Clean the bearing caps and camshaft jour-
nals.
(2) Place the camshafts on cylinder head.
(Without installing the valve rocker.)
(3) Place a plastigauge across each of the cam-
shaft journals.
(4) Gradually tighten the cap in at least two
stages in alphabetical sequence as shown in the
figure, and then tighten to the specified torque.
Do not turn the camshaft.

Tightening torque:

T1: 9.75 N

⋅

m (1.0 kgf-m, 7.2 ft-lb)

T2: 20 N

⋅

m (2.0 kgf-m, 14.8 ft-lb)

(5) Remove the bearing caps.

ME-00106

ME-00105

Camshaft journal

Front

Center, rear

Specifica-
tion

37.946 — 37.963 

(1.4939 — 1.4946)

29.946 — 29.963 

(1.1790 — 1.1797)

mm (in)

ME-00118

ME-00774

(A)

(E)

(F)

(B)

(D)

(C)

T2

T1

ME(H4DOTC)-61

MECHANICAL

Camshaft

(6) Measure the widest point of the plastigauge
on each journal. If oil clearance exceeds the
standard, replace the camshaft. If necessary,
replace the camshaft caps and cylinder head as
a set.

Standard:

0.037 — 0.072 mm (0.0015 — 0.0028 in)

(7) Completely remove the plastigauge.

5) Check the cam face condition, and remove the
minor faults by grinding with oil stone. Measure the
cam height H. If it exceeds the standard or offset
wear occurs, replace it.

Cam height H:

Standard

Intake

45.85 — 45.95 mm (1.805 — 1.809 in)

Exhaust

45.75 — 45.85 mm (1.801 — 1.805 in)

Cam base circle diameter A:

37.0 mm (1.457 in)

6) Measure the side clearance of camshaft with dial
gauge. If the side clearance exceeds the standard
or offset wear occurs, replace the caps and cylinder
head as a set. If necessary, replace the camshaft.

Standard:

0.068 — 0.116 mm (0.0027 — 0.0046 in)

ME-00119

ME-00120

H

A

ME-00121

ME(H4DOTC)-62

MECHANICAL

Cylinder Head

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.

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:
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

°.

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.>

ME-00122

(B)

(C)

(D)

(E)

(F)

(A)

ME-00122

(B)

(C)

(D)

(E)

(F)

(A)

ME-00123

(B)

(C)

(D)

(E)

(F)

(A)