engine oil SUBARU LEGACY 1995 Service User Guide

4. Valve Rocker Assembly
A: REMOVAL
B2M0418A
B2M0382A
1) Disconnect PCV hose and remove rocker cover.
2) Removal of valve rocker assembly
(1) Remove bolts

1through
4in numerical sequence.
CAUTION:
Leave two or three threads of bolt

1engaged to retain
valve rocker assembly.
(2) Equally loosen bolts

5through
8all the way, being
careful that knock pin is not gouged.
B2M0414
(3) Remove valve rocker assembly.
CAUTION:
Locate valve rocker assembly with air vent (on rocker
arm) facing upward or dip it in engine oil after removal.
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2-3SERVICE PROCEDURE
4. Valve Rocker Assembly

B: DISASSEMBLY
B2M0383A
1) Remove bolts which secure rocker shaft.
2) Extract rocker shaft. Remove valve rocker arms,
springs and shaft supports from rocker shaft.
CAUTION:
Arrange all removed parts in order so that they can
be installed in their original positions.
Locate rocker arms with air vents facing upward.
3) Remove valve lash adjuster from valve rocker.
CAUTION:
Do not remove valve lash adjuster unless it requires
air bleeding or replacement.
If valve lash adjuster is hard to remove by hand, use
pliers. Be careful not to scratch valve lash adjuster.
Dip lash adjuster in engine oil after removal.
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2-3SERVICE PROCEDURE
4. Valve Rocker Assembly

G2M0131
C: INSPECTION
1. HYDRAULIC LASH ADJUSTER
1) Bleed air from hydraulic lash adjuster as described
below:
(1) While dipping hydraulic lash adjuster in engine oil,
as shown in Figure, push check ball in usinga2mm
(0.08 in) diameter round bar.
(2) With check ball pushed in, manually move plunger
up and down at one second intervals until air bubbles
disappear.
(3) After air bubbles disappear, remove round bar and
quickly push plunger in to ensure it is locked. If plunger
does not lock properly, replace hydraulic lash adjuster.
CAUTION:
Leave hydraulic lash adjuster (after air is bled) in
engine oil until it is ready for installation.
2) Replace hydraulic lash adjuster with a new one if valve
contact surface is scratched.
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2-3SERVICE PROCEDURE
4. Valve Rocker Assembly

D: ASSEMBLY
B2M0383B
Tightening torque: N⋅m (kg-m, ft-lb)
T: 5±1 (0.5±0.1, 3.6±0.7)
1) After bleeding air from hydraulic lash adjuster, position
hydraulic lash adjuster in valve rocker arm while dipping in
engine oil.
CAUTION:
Fill rocker arm oil reservoir chamber with engine oil.
Install a new hydraulic lash adjuster O-ring, being
careful not to scratch it.
Do not attempt to rotate hydraulic lash adjuster dur-
ing installation.
2) Arrange valve rocker arms, springs and shaft supports
in assembly order and insert valve rocker shaft. Ensure
that cutout portion of rocker shaft faces oil holes

Ain shaft
supports.
CAUTION:
Valve rocker arms, rocker shaft and shaft supports
have identification marks. Ensure parts with same
markings are properly assembled.
3) Install valve rocker shaft securing bolts while aligning
shaft“lock”holes

Bwith bolts.
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2-3SERVICE PROCEDURE
4. Valve Rocker Assembly

C: INSTALLATION
1. CAMSHAFT LH
B2M0384B
Tightening torque: N⋅m (kg-m, ft-lb)
T1: 10 (1.0, 7)
T2: 16 (1.6, 12)
1) Apply a coat of engine oil to camshaft journals and
install camshaft LH.
2) Apply a coat of engine oil or grease to O-ring.
3) Install O-ring to camshaft support.
CAUTION:
Use a new O-ring.
4) Install camshaft support.
G2M0141
5) Apply a coat of grease to oil seal lips and install oil seal
on camshaft support by using ST1 and ST2.
CAUTION:
Use a new oil seal.
ST1 499597000 OIL SEAL GUIDE
ST2 499587100 OIL SEAL INSTALLER
6) Install oil level gauge guide bolt.
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2-3SERVICE PROCEDURE
5. Camshaft

2. CAMSHAFT RH
B2M0385B
Tightening torque: N⋅m (kg-m, ft-lb)
T: 16 (1.6, 12)
1) Apply a coat of engine oil to camshaft journals and
install camshaft RH.
2) Apply a coat of engine oil or grease to O-ring.
3) Install O-ring to camshaft support.
CAUTION:
Use a new O-ring.
4) Install camshaft support.
G2M0143
5) Install oil seal by using ST1 and ST2.
CAUTION:
Use a new oil seal.
ST1 499597000 OIL SEAL GUIDE
ST2 499587100 OIL SEAL INSTALLER
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2-3SERVICE PROCEDURE
5. Camshaft

B2M0077A
(6) Check the valve guide protrusion.
Valve guide protrusion: L
17.5—18.0 mm (0.689—0.709 in)
B2M0078
(7) Ream the inside of valve guide with ST. Gently
rotate the reamer clockwise while pressing it lightly into
valve guide, and return it also rotating clockwise. After
reaming, clean valve guide to remove chips.
ST 499767400 VALVE GUIDE REAMER
CAUTION:
Apply engine oil to the reamer when reaming.
If the inner surface of the valve guide is torn, the
edge of the reamer should be slightly ground with an
oil stone.
If the inner surface of the valve guide becomes lus-
trous and the reamer does not chips, use a new reamer
or remedy the reamer.
(8) Recheck the contact condition between valve and
valve seat after replacing valve guide.
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2-3SERVICE PROCEDURE
6. Cylinder Head

B2M0389A
6. INTAKE AND EXHAUST VALVE OIL SEAL
Replace oil seal with new one, if lip is damaged or spring
out of place, or when the surfaces of intake valve and valve
seat are reconditioned or intake valve guide is replaced.
1) Place cylinder head on ST1.
2) Press-fit oil seal to the specified dimension indicated in
the Figure by using ST2.
ST1 498267200 CYLINDER HEAD TABLE
ST2 498857100 VALVE OIL SEAL GUIDE
CAUTION:
Apply engine oil to oil seal before press-fitting.
When press-fitting oil seal, do not use hammer or
strike in.
Differentiate between intake valve oil seal and
exhaust valve oil seal by noting their difference in
color.
Color of rubber part:
Intake [Black]
Exhaust [Brown]
Color of spring part:
Intake [White]
Exhaust [White]
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2-3SERVICE PROCEDURE
6. Cylinder Head

D: ASSEMBLY
B2M0121B
Tightening torque: N⋅m (kg-m, ft-lb)
T1: 5±1 (0.5±0.1, 3.6±0.7)
T2: 10 (1.0, 7)
T3: 12±1 (1.2±0.1, 8.7±0.7)
T4: 16 (1.6, 12)
1) Install plug (cylinder head LH) by using ST.
ST 499587100 OIL SEAL INSTALLER
2) Installation of valve spring and valve
(1) Place cylinder head on ST.
ST 498267200 CYLINDER HEAD TABLE
(2) Coat stem of each valve with engine oil and insert
valve into valve guide.
CAUTION:
When inserting valve into valve guide, use special care
not to damage the oil seal lip.
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2-3SERVICE PROCEDURE
6. Cylinder Head

E: INSTALLATION
1. CYLINDER HEAD
B2M0119B
1) Install cylinder head and gaskets on cylinder block.
CAUTION:
Use new cylinder head gaskets.
B2M0120B
2) Tighten 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 kg-m, 22 ft-lb) in
numerical sequence.
Then tighten all bolts to 69 N⋅m (7.0 kg-m, 51 ft-lb) in
numerical sequence.
(3) Back off all bolts by 180°first; back them off by 180°
again.
(4) Tighten bolts

1and
2to 34 N⋅m (3.5 kg-m, 25 ft-
lb).
(5) Tighten bolts

3,
4,
5and
6to 15 N⋅m (1.5 kg-m,
11 ft-lb).
(6) Tighten all bolts by 80 to 90°in numerical
sequence.
CAUTION:
Do not tighten bolts more than 90°.
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2-3SERVICE PROCEDURE
6. Cylinder Head