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G2M0153
4. INTAKE AND EXHAUST VALVE
1) Inspect the flange and stem of valve, and replace if
damaged, worn, or deformed, or if“H”is less than the
specified limit.
H:
Intake
Standard
1.0 mm (0.039 in)
Limit
0.8 mm (0.031 in)
Exhaust
Standard
1.2 mm (0.047 in)
Limit
0.8 mm (0.031 in)
Valve overall length:
Intake
101.0 mm (3.976 in)
Exhaust
101.2 mm (3.984 in)
2) Put a small amount of grinding compound on the seat
surface and lap the valve and seat surface. Also refer to 2.
VALVE SEAT [W6C2] at this time. Install a new intake valve
oil seal after lapping.
G2M0154
5. VALVE SPRINGS
1) Check valve springs for damage, free length, and ten-
sion. Replace valve spring if it is not to the specifications
presented below.
2) To measure the squareness of the valve spring, stand
the spring on a surface plate and measure its deflection at
the top using a try square.
Free length 44.05 mm (1.7342 in)
Squareness 2.5°, 1.9 mm (0.075 in)
Tension/spring height174.6—200.1 N
(17.8—20.4 kg, 39.2—45.0 lb)/ 36.0 mm
(1.417 in)
405.0—458.0 N
(41.3—46.7 kg, 91.1—103.0 lb)/
28.2 mm (1.110 in)
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2-3SERVICE PROCEDURE
6. Cylinder Head
Page 66 of 2248
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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6. Cylinder Head
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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
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B2M0386A
(3) Install valve spring and retainer.
CAUTION:
Be sure to install the valve springs with their close-
coiled end facing the seat on the cylinder head.
(4) Set ST on valve spring.
ST 499718000 VALVE SPRING REMOVER
(5) Compress valve spring and fit valve spring retainer
key.
(6) After installing, tap valve spring retainers lightly
with wooden hammer for better seating.
3) Install camshaft and support.
4) Install valve rocker assembly.
5) Install rocker cover.
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2-3SERVICE PROCEDURE
6. Cylinder Head
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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
1and2to 34 N⋅m (3.5 kg-m, 25 ft-
lb).
(5) Tighten bolts
3,4,5and6to 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
Page 70 of 2248
(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).
4) Install timing belt, camshaft sprocket and related parts.
2. INTAKE MANIFOLD
CAUTION:
Use dry compressed air to remove foreign particles
before installing each solenoid valve and sensor.
1) Install engine coolant pipe.
2) Install intake manifold.
3) Remove ENGINE STAND (ST).
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7. Cylinder Block
A: REMOVAL
1. RELATED PARTS
1) Remove timing belt, camshaft sprocket and related
parts.
2) Remove intake manifold and cylinder head.
2. OIL PUMP AND ENGINE COOLANT PUMP
B2M0124A
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7. Cylinder Block
Page 72 of 2248
1) Remove housing cover.
G2M0161
2) Remove flywheel or drive plate.
To lock crankshaft use ST.
ST 498497100 CRANKSHAFT STOPPER
3) Remove oil separator cover.
4) Remove engine coolant pipe.
5) Remove engine coolant pump.
G2M0162
6) Remove oil pump from cylinder block.
Use a flat-bladed screwdriver as shown in Figure when
removing oil pump.
CAUTION:
Be careful not to scratch the mating surface of cylin-
der block and oil pump.
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7. Cylinder Block