1996 SUBARU LEGACY tightening head

2. Cylinder Head and Camshaft
B2M0681A

1Rocker cover (RH)


2Rocker cover gasket (RH)


3Oil separator cover


4Gasket


5Intake camshaft cap (Front RH)


6Intake camshaft cap (Center RH)


7Intake camshaft cap (Rear RH)


8Intake camshaft (RH)


9Exhaust camshaft cap (Front RH)


10Exhaust camshaft cap (Center RH)


11Exhaust camshaft cap (Rear RH)


12Exhaust camshaft (RH)


13Intake valve guide

14Exhaust valve guide


15Cylinder head bolt


16Oil seal


17Cylinder head (RH)


18Cylinder head gasket (RH)


19Cylinder head gasket (LH)


20Cylinder head (LH)


21Intake camshaft (LH)


22Exhaust camshaft (LH)


23Intake camshaft cap (Front LH)


24Intake camshaft cap (Center LH)


25Intake camshaft cap (Rear LH)


26Exhaust camshaft (Front LH)

27Exhaust camshaft cap (Center LH)


28Exhaust camshaft cap (Rear LH)


29Rocker cover gasket (LH)


30Rocker cover (LH)


31Oil filler cap


32Gasket


33Oil filler duct


34Gasket
Tightening torque: N⋅m (kg-m, ft-lb)
T1: Refer to 2-3b [W4E1].
T2: 5 (0.5, 3.6)
T3: 10 (1.0, 7)
7
2-3bCOMPONENT PARTS
2. Cylinder Head and Camshaft

3. Cylinder Head and Valve Assembly
G2M0706

1Exhaust valve


2Intake valve


3Cylinder head


4Valve spring seat


5Intake valve oil seal


6Valve spring


7Retainer


8Retainer key

9Hydraulic lash adjuster


10Exhaust valve oil seal
Tightening torque: N⋅m (kg-m, ft-lb)
T1: 5 (0.5, 3.6)
T2: 12 (1.2, 9)
8
2-3bCOMPONENT PARTS
3. Cylinder Head and Valve Assembly

G2M0138
5) Check cam face condition; remove minor faults by
grinding with oil stone. Measure the cam height H; replace
if the limit has been exceeded.
Standard:
Intake 41.68—41.78 mm (1.6409—1.6449 in)
Exhaust 41.98—42.08 mm (1.6528—1.6567 in)
Limit:
Intake 41.52 mm (1.6346 in)
Exhaust 41.82 mm (1.6465 in)
G2M0748
6) Measure the thrust clearance of camshaft with dial
gauge. If the clearance exceeds the limit, replace caps and
cylinder head as a set. If necessary replace camshaft.
Standard:
0.040—0.080 mm (0.0016—0.0031 in)
Limit:
0.1 mm (0.004 in)
C: INSTALLATION
1. CAMSHAFT
G2M0750
Tightening torque: N⋅m (kg-m, ft-lb)
T1: 10±0.7 (1.0±0.07, 7.2±0.5)
T2: 20±2 (2.0±0.2, 14.5±1.4)
32
2-3bSERVICE PROCEDURE
3. Camshaft

B2M0764A
1) Camshaft installation
Apply engine oil to cylinder head at camshaft bearing loca-
tion before installing camshaft. Install camshaft so that
rocker arm is close to or in contact with“base circle”of cam
lobe.
CAUTION:
When camshafts are positioned as shown in figure,
camshafts need to be rotated at a minimum to align
with timing belt during installation.
Right-hand camshaft need not be rotated when set
at position shown in figure.
Left-hand intake camshaft: Rotate 80°clockwise.
Left-hand exhaust camshaft: Rotate 45°counter-clock-
wise.
G2M0752
2) Camshaft cap installation
(1) Apply fluid packing sparingly to cap mating surface.
CAUTION:
Do not apply fluid packing excessively. Failure to do so
may cause excess packing to come out and flow
toward oil seal, resulting in oil leaks.
Fluid packing:
THREE BOND 1215 or equivalent
G2M0753
(2) Apply engine oil to cap bearing surface and install
cap on camshaft as shown by identification mark.
(3) Gradually tighten cap in at least two stages in the
numerical order shown in figure, and then tighten to
specified torque.
(4) Similarly, tighten cap on exhaust side.
After tightening cap, ensure camshaft rotates only
slightly while holding it at“base”circle.
G2M0754
3) Camshaft oil seal installation
Apply grease to new oil seal lips and press onto front end
of camshaft by using ST1 and ST2.
CAUTION:
Use a new oil seal.
ST1 499587100 OIL SEAL INSTALLER
ST2 499597000 OIL SEAL GUIDE
33
2-3bSERVICE PROCEDURE
3. Camshaft

(7) Further tighten all bolts by 80 to 90°in numerical
sequence.
CAUTION:
Ensure that the total“re-tightening angle”[steps (6)
and (7) above] do not exceed 180°.
3) Install oil level gauge guide attaching bolt (left side
only).
2. INTAKE MANIFOLD
1) Install camshafts, rocker cover and related parts.

G2M0750
Tightening torque: N⋅m (kg-m, ft-lb)
T1: 10±0.7 (1.0±0.07, 7.2±0.5)
T2: 20±2 (2.0±0.2, 14.5±1.4)
44
2-3bSERVICE PROCEDURE
4. Cylinder Head

B2M0347A
5) Install engine harness onto intake manifold.
6) Connect connectors to throttle position sensor, ignition
coil, fuel injectors, idle air control solenoid valve, purge
control solenoid valve and EGR solenoid valve.


1EGR solenoid valve


2Throttle position sensor


3Idle air control solenoid valve


4Purge control solenoid valve


5Harness band
B2M0757A
7) Connect engine ground terminal to intake manifold.
B2M0159
D: INSTALLATION
1) Install intake manifold onto cylinder heads.
CAUTION:
Always use new gaskets.
Tightening torque:
25±2 N⋅m (2.5±0.2 kg-m, 18.1±1.4 ft-lb)
G2M0296
2) Connect fuel hoses.
G2M0091
3) Connect connector to oil pressure switch.
14
2-7SERVICE PROCEDURE
4. Intake Manifold

B2M0313
7) Remove front exhaust pipe and center exhaust pipe
from hanger bracket.
CAUTION:
Be careful not to pull down front exhaust pipe and
center exhaust pipe.
B2M0060
8) Separate front exhaust pipe from front catalytic con-
verter.
B2M0060
B: INSTALLATION
CAUTION:
Replace gaskets with new ones.
1) Install front catalytic converter to front exhaust pipe.
Tightening torque:
30±5 N⋅m (3.1±0.5 kg-m, 22.4±3.6 ft-lb)
B2M0313
2) Install front exhaust pipe and center exhaust pipe.
And temporarily tighten bolt which installs center exhaust
pipe to hanger bracket.
B2M0054
3) Tighten bolts which hold front exhaust pipe onto cylin-
der heads.
Tightening torque:
30±5 N⋅m (3.1±0.5 kg-m, 22.4±3.6 ft-lb)
5
2-9SERVICE PROCEDURE
1. Front Exhaust Pipe and Center Exhaust Pipe

B2M0347A
5) Install engine harness onto intake manifold.
6) Connect connectors to throttle position sensor, ignition
coil, fuel injectors, idle air control solenoid valve, purge
control solenoid valve and EGR solenoid valve.


1EGR solenoid valve


2Throttle position sensor


3Idle air control solenoid valve


4Purge control solenoid valve


5Harness band
B2M0757A
7) Connect engine ground terminal to intake manifold.
B2M0159
D: INSTALLATION
1) Install intake manifold onto cylinder heads.
CAUTION:
Always use new gaskets.
Tightening torque:
25±2 N⋅m (2.5±0.2 kg-m, 18.1±1.4 ft-lb)
G2M0296
2) Connect fuel hoses.
G2M0091
3) Connect connector to oil pressure switch.
14
2-7SERVICE PROCEDURE
4. Intake Manifold