Subaru Legacy III (2000-2003 year). Manual - part 424

 

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Subaru Legacy III (2000-2003 year). Manual - part 424

 

 

ME(H4DOSTC)-60

MECHANICAL

CAMSHAFT

<Ref. to ME(H4DOSTC)-46, INSTALLATION, Belt
Cover.>
15) Install the crankshaft pulley. 
<Ref. to ME(H4DOSTC)-44, INSTALLATION,
Crankshaft Pulley.>
16) Install the V-belt. 
<Ref. to ME(H4DOSTC)-42, INSTALLATION, V-
belt.>

C: INSPECTION

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

Limit:

0.020 mm (0.0008 in)

2) Check the journal for damage and wear. Re-
place if faulty.
3) Measure the outside diameter of camshaft jour-
nal. If the jounal diameter is not as specified, 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 shown in the
figure, and then tighten to specified torque.
Do not turn the camshaft.

Tightening torque:

T1: 10 N·m (1.0 kgf-m, 7.2 ft-lb)
T2: 20 N·m (2.0 kgf-m, 14.5 ft-lb)

(5) Remove the bearing caps.
(6) Measure the widest point of plastigauge on
each journal.
If the oil clearance exceeds the limit, 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)

Limit:

0.10 mm (0.0039 in)

(7) Completely remove the plastigauge.

5) Check the cam face condition; remove the minor
faults by grinding with oil stone. Measure the cam
height H; replace if the limit has been exceeded.

Cam height: H

Standard:

Intake:

46.25 — 46.35 mm (1.821 — 1.825 in)

Exhaust:

46.15 — 46.25 mm (1.817 — 1.821 in)

Limit:

Intake:

46.15 mm (1.817 in)

Exhaust:

46.65 mm (1.813 in)

Camshaft journal

Front

Center, rear

Standard

37.946 — 37.963 mm 

(1.4939 — 1.4946 in)

29.946 — 29.963 mm 

(1.1790 — 1.1796 in)

ME-00118

ME-00371

(F)

(D)

(C)

(A)

(E)

(B)

T1

T2

ME-00119

ME(H4DOSTC)-61

MECHANICAL

CAMSHAFT

Cam base circle diameter A:

37.0 mm (1.457 in)

6) Measure the thrust clearance of camshaft with
dial gauge. If the clearance exceeds the limit, re-
place the caps and cylinder head as a set. If neces-
sary replace the camshaft.

Standard:

0.015 — 0.070 mm (0.0006 — 0.0028 in)

Limit:

0.1 mm (0.004 in)

ME-00120

H

A

ME-00121

ME(H4DOSTC)-62

MECHANICAL

CYLINDER HEAD ASSEMBLY

19.Cylinder Head Assembly

A: REMOVAL

1) Remove the V-belt. 
<Ref. to ME(H4DOSTC)-42, REMOVAL, V-belt.>
2) Remove the crankshaft pulley. 
<Ref. to ME(H4DOSTC)-44, REMOVAL, Crank-
shaft Pulley.>
3) Remove the belt cover. 
<Ref. to ME(H4DOSTC)-46, REMOVAL, Belt Cov-
er.>
4) Remove the timing belt assembly. 
<Ref. to ME(H4DOSTC)-47, REMOVAL, Timing
Belt Assembly.>
5) Remove the camshaft sprocket. 
<Ref. to ME(H4DOSTC)-55, REMOVAL, Camshaft
Sprocket.>
6) Remove the intake manifold. 
<Ref. to FU(H4DOSTC)-15, REMOVAL, Intake
Manifold.>
7) Remove the bolt which installs A/C compressor
bracket on cylinder head.
8) Remove the camshaft. <Ref. to ME(H4DOSTC)-
57, REMOVAL, Camshaft.>
9) Remove the cylinder head bolts in alphabetical
sequence shown in the figure.
Leave bolts (A) and (D) engaged by three or four
threads to prevent the cylinder head from falling.

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.

NOTE:
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.

NOTE:
• 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.
(3) Tighten all bolts to 69 N·m (7.0 kgf-m, 51 ft-
lb) in alphabetical sequence again.
(4) Back off all bolts by 180

° 

first; back them off

by 180× again in reverse order of installation.
(5) Tighten all bolts to 39 N·m (4.0 kgf-m, 29 ft-
lb) in alphabetical sequence.
(6) Tighten all bolts 80 to 90

°

 in alphabetical se-

quence.
(7) Tighten all bolts by 40 to 45

°

 in alphabetical

sequence again.

NOTE:
Do not tighten the bolts by more than 45

°

.

(8) Further tighten all bolts (A) and (B) by 40 to
45

°

.

NOTE:
Ensure that the total “re-tightening angle” in the
previous two steps do not exceed 90

°

.

3) Install the camshaft. 
<Ref. to ME(H4DOSTC)-58, INSTALLATION,
Camshaft.>
4) Install the A/C compressor bracket on cylinder
head.
5) Install the intake manifold. 
<Ref. to FU(H4DOSTC)-18, INSTALLATION, In-
take Manifold.>

ME-00122

( A )

( B )

( C )

( D )

( E )

( F )

ME-00122

( A )

( B )

( C )

( D )

( E )

( F )

ME-00123

( A )

( B )

( C )

( D )

( E )

( F )

ME(H4DOSTC)-63

MECHANICAL

CYLINDER HEAD ASSEMBLY

6) Install the camshaft sprocket. 
<Ref. to ME(H4DOSTC)-55, INSTALLATION,
Camshaft Sprocket.>
7) Install the timing belt assembly. 
<Ref. to ME(H4DOSTC)-49, INSTALLATION, Tim-
ing Belt Assembly.>
8) Install the belt cover. 
<Ref. to ME(H4DOSTC)-46, INSTALLATION, Belt
Cover.>
9) Install the crankshaft pulley. 
<Ref. to ME(H4DOSTC)-44, INSTALLATION,
Crankshaft Pulley.>
10) Install the V-belt. 
<Ref. to ME(H4DOSTC)-42, INSTALLATION, V-
belt.>

C: DISASSEMBLY

1) Remove the valve shims and valve lifters.
2) Compress the valve spring and remove the
valve spring retainer key. Remove each valve and
valve spring.
ST1

498267600

CYLINDER HEAD TABLE

ST2

499718000

VALVE SPRING REMOVER

NOTE:
• Keep the removed parts in order for re-installing
in their original positions.
• Mark each valve to prevent confusion.
• Use extreme care not to damage the lips of the
intake valve oil seals and exhaust valve oil seals.

ME-00124

ST2

ST1

 

 

 

 

 

 

 

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